一、问题背景
在日常税务报单中，处理大量的发票是一项重要但繁琐的任务，发票包含了大量的信息，包括购买方名称、发票号码、发票代码、开票日期、金额、税率等等。为了提高效率，减少错误和减轻员工的工作负担，许多个人或单位寻求自动化发票信息提取的解决方案。demo是基于某高校财务自助报销系统自动化改进的成果之一。
二、解决思路
- 待提取的关键信息：发票号码、发票代码、电子发票号码（新版发票）、开票日期、校验码、销售方名称、金额、税额、总计。
- 设计合适的正则表达式，并通过正则枚举类进行管理。
- OFD格式发票处理。
- 将结果写入excel表格进行结果输出。
- 预期结果：希望支持旧版全电发票、新版全电发票、OFD格式全电发票关键信息的提取，并且提取率达92%以上。
三、相关依赖
- 进行正式操作前，请在Maven中引入相关依赖。
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>2.0.21</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>fontbox</artifactId>
<version>2.0.21</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>jempbox</artifactId>
<version>1.8.13</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>xmpbox</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>preflight</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox-tools</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>5.0.0</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>5.0.0</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12.0</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
</dependency>四、代码实现
- 具体结构：
- 在原代码基础上，增加了对新版全电发票信息提取，并且对原正则表达式进行了修改，对本地测试的210张各地发票提取通过率达100%（由于解析后的PDF电子发票内容不一定完全一致，故该准确率仅供参考）
- 新版全电发票样式：
4.1实体类
- 旧版全电发票实体类（Invoice）：
import java.math.BigDecimal;
import java.util.List;
public class Invoice {
/**
* 文件绝对路径
*/
private String fileAbsolutePath;
/**
* 发票标题
*/
private String title;
/**
* 机器编号
*/
private String machineNumber;
/**
* 发票代码
*/
private String code;
/**
* 发票号码
*/
private String number;
/**
* 开票日期
*/
private String date;
/**
* 校验码
*/
private String checksum;
/**
* 购买方名称
*/
private String buyerName;
/**
* 购买方纳税人识别号
*/
private String buyerCode;
/**
* 购买方地址
*/
private String buyerAddress;
/**
* 购买方银行账号
*/
private String buyerAccount;
/**
* 密码区
*/
private String password;
/**
* 合计金额
*/
private BigDecimal amount;
/**
* 合计税额
*/
private BigDecimal taxAmount;
/**
* 价税合计大写字符串
*/
private String totalAmountString;
/**
* 价税合计金额
*/
private BigDecimal totalAmount;
/**
* 销售方名称
*/
private String sellerName;
/**
* 销售方纳税人识别号
*/
private String sellerCode;
/**
* 销售方地址
*/
private String sellerAddress;
/**
* 销售方银行账号
*/
private String sellerAccount;
/**
* 收款人
*/
private String payee;
/**
* 复核人
*/
private String reviewer;
/**
* 开票人
*/
private String drawer;
/**
* 发票类型
*/
private String type;
/**
* 发票明细列表
*/
private List<Detail> detailList;
/**
* 获取文件绝对路径
* @return 文件绝对路径
*/
public String getFileAbsolutePath() {
return fileAbsolutePath;
}
/**
* 设置文件绝对路径
* @param fileAbsolutePath 文件绝对路径
*/
public void setFileAbsolutePath(String fileAbsolutePath) {
this.fileAbsolutePath = fileAbsolutePath;
}
/**
* 获取标题
* @return 标题
*/
public String getTitle() {
return title;
}
/**
* 设置标题
* @param title 标题
*/
public void setTitle(String title) {
this.title = title;
}
/**
* 获取机器编号
* @return 机器编号
*/
public String getMachineNumber() {
return machineNumber;
}
/**
* 设置机器编号
* @param machineNumber 机器编号
*/
public void setMachineNumber(String machineNumber) {
this.machineNumber = machineNumber;
}
/**
* 获取发票代码
* @return 发票代码
*/
public String getCode() {
return code;
}
/**
* 设置发票代码
* @param code 发票代码
*/
public void setCode(String code) {
this.code = code;
}
/**
* 获取发票号码
* @return 发票号码
*/
public String getNumber() {
return number;
}
/**
* 设置发票号码
* @param number 发票号码
*/
public void setNumber(String number) {
this.number = number;
}
/**
* 获取日期
* @return 日期
*/
public String getDate() {
return date;
}
/**
* 设置日期
* @param date 日期
*/
public void setDate(String date) {
this.date = date;
}
/**
* 获取校验码
* @return 校验码
*/
public String getChecksum() {
return checksum;
}
/**
* 设置校验码
* @param checksum 校验码
*/
public void setChecksum(String checksum) {
this.checksum = checksum;
}
/**
* 获取购买方名称
* @return 购买方名称
*/
public String getBuyerName() {
return buyerName;
}
/**
* 设置购买方名称
* @param buyerName 购买方名称
*/
public void setBuyerName(String buyerName) {
this.buyerName = buyerName;
}
/**
* 获取购买方发票代码
* @return 购买方发票代码
*/
public String getBuyerCode() {
return buyerCode;
}
/**
* 设置购买方发票代码
* @param buyerCode 购买方发票代码
*/
public void setBuyerCode(String buyerCode) {
this.buyerCode = buyerCode;
}
/**
* 获取购买方地址
* @return 购买方地址
*/
public String getBuyerAddress() {
return buyerAddress;
}
/**
* 设置购买方地址
* @param buyerAddress 购买方地址
*/
public void setBuyerAddress(String buyerAddress) {
this.buyerAddress = buyerAddress;
}
/**
* 获取购买方账号
* @return 购买方账号
*/
public String getBuyerAccount() {
return buyerAccount;
}
/**
* 设置购买方账号
* @param buyerAccount 购买方账号
*/
public void setBuyerAccount(String buyerAccount) {
this.buyerAccount = buyerAccount;
}
/**
* 获取密码
* @return 密码
*/
public String getPassword() {
return password;
}
/**
* 设置密码
* @param password 密码
*/
public void setPassword(String password) {
this.password = password;
}
/**
* 获取金额
* @return 金额
*/
public BigDecimal getAmount() {
return amount;
}
/**
* 设置金额
* @param amount 金额
*/
public void setAmount(BigDecimal amount) {
this.amount = amount;
}
/**
* 获取税额
* @return 税额
*/
public BigDecimal getTaxAmount() {
return taxAmount;
}
/**
* 设置税额
* @param taxAmount 税额
*/
public void setTaxAmount(BigDecimal taxAmount) {
this.taxAmount = taxAmount;
}
/**
* 获取价税合计（大写）
* @return 价税合计（大写）
*/
public String getTotalAmountString() {
return totalAmountString;
}
/**
* 设置价税合计（大写）
* @param totalAmountString 价税合计（大写）
*/
public void setTotalAmountString(String totalAmountString) {
this.totalAmountString = totalAmountString;
}
/**
* 获取价税合计
* @return 价税合计
*/
public BigDecimal getTotalAmount() {
return totalAmount;
}
/**
* 设置价税合计
* @param totalAmount 价税合计
*/
public void setTotalAmount(BigDecimal totalAmount) {
this.totalAmount = totalAmount;
}
/**
* 获取销售方名称
* @return 销售方名称
*/
public String getSellerName() {
return sellerName;
}
/**
* 设置销售方名称
* @param sellerName 销售方名称
*/
public void setSellerName(String sellerName) {
this.sellerName = sellerName;
}
/**
* 获取销售方发票代码
* @return 销售方发票代码
*/
public String getSellerCode() {
return sellerCode;
}
/**
* 设置销售方发票代码
* @param sellerCode 销售方发票代码
*/
public void setSellerCode(String sellerCode) {
this.sellerCode = sellerCode;
}
/**
* 获取卖方地址。
* @return 卖方地址
*/
public String getSellerAddress() {
return sellerAddress;
}
/**
* 设置卖方地址。
* @param sellerAddress 要设置的卖方地址
*/
public void setSellerAddress(String sellerAddress) {
this.sellerAddress = sellerAddress;
}
/**
* 获取卖方账号。
* @return 卖方账号
*/
public String getSellerAccount() {
return sellerAccount;
}
/**
* 设置卖方账号。
* @param sellerAccount 要设置的卖方账号
*/
public void setSellerAccount(String sellerAccount) {
this.sellerAccount = sellerAccount;
}
/**
* 获取收款人信息。
* @return 收款人信息
*/
public String getPayee() {
return payee;
}
/**
* 设置收款人信息。
* @param payee 要设置的收款人信息
*/
public void setPayee(String payee) {
this.payee = payee;
}
/**
* 获取复核人信息。
* @return 复核人信息
*/
public String getReviewer() {
return reviewer;
}
/**
* 设置复核人信息。
* @param reviewer 要设置的复核人信息
*/
public void setReviewer(String reviewer) {
this.reviewer = reviewer;
}
/**
* 获取开票人信息。
* @return 开票人信息
*/
public String getDrawer() {
return drawer;
}
/**
* 设置开票人信息。
* @param drawer 要设置的开票人信息
*/
public void setDrawer(String drawer) {
this.drawer = drawer;
}
/**
* 获取发票类型。
* @return 发票类型
*/
public String getType() {
return type;
}
/**
* 设置发票类型。
* @param type 要设置的发票类型
*/
public void setType(String type) {
this.type = type;
}
/**
* 获取发票明细列表。
* @return 发票明细列表
*/
public List<Detail> getDetailList() {
return detailList;
}
/**
* 设置发票明细列表。
* @param detailList 要设置的发票明细列表
*/
public void setDetailList(List<Detail> detailList) {
this.detailList = detailList;
}
@Override
public String toString() {
return "Invoice [title=" + title + ", machineNumber=" + machineNumber + ", code=" + code + ", number=" + number
+ ", date=" + date + ", checksum=" + checksum + ", buyerName=" + buyerName + ", buyerCode=" + buyerCode
+ ", buyerAddress=" + buyerAddress + ", buyerAccount=" + buyerAccount + ", password=" + password + ", amount="
+ amount + ", taxAmount=" + taxAmount + ", totalAmountString=" + totalAmountString + ", totalAmount="
+ totalAmount + ", sellerName=" + sellerName + ", sellerCode=" + sellerCode + ", sellerAddress=" + sellerAddress
+ ", sellerAccount=" + sellerAccount + ", payee=" + payee + ", reviewer=" + reviewer + ", drawer=" + drawer
+ ", type=" + type + ", detailList=" + detailList + "]";
}
}- 发票详情类（Detail）：
import lombok.Data;
import java.math.BigDecimal;
/**
* @author b16mt
* @version v1.0
*/
@Data
public class Detail {
/**
* 商品名称
*/
private String name;
/**
* 商品规格型号
*/
private String model;
/**
* 商品单位
*/
private String unit;
/**
* 商品数量
*/
private BigDecimal count;
/**
* 商品单价
*/
private BigDecimal price;
/**
* 商品总金额
*/
private BigDecimal amount;
/**
* 商品税率
*/
private BigDecimal taxRate;
/**
* 商品税额
*/
private BigDecimal taxAmount;
}- 新版全电发票实体类（NewInvoice）：
import java.math.BigDecimal;
public class NewInvoice {
/**
* 文件绝对路径
*/
private String fileAbsolutePath;
/**
* 发票号码
*/
private String number;
/**
* 开票日期
*/
private String date;
/**
* 销售方名称
*/
private String sellerName;
/**
* 合计金额
*/
private BigDecimal amount;
/**
* 合计税额
*/
private BigDecimal taxAmount;
/**
* 价税合计金额
*/
private BigDecimal totalAmount;
/**
* 获取文件绝对路径
* @return 文件绝对路径
*/
public String getFileAbsolutePath() {
return fileAbsolutePath;
}
/**
* 设置文件绝对路径
* @param fileAbsolutePath 文件绝对路径
*/
public void setFileAbsolutePath(String fileAbsolutePath) {
this.fileAbsolutePath = fileAbsolutePath;
}
/**
* 获取发票号码
* @return 发票号码
*/
public String getNumber() {
return number;
}
/**
* 设置发票号码
* @param number 发票号码
*/
public void setNumber(String number) {
this.number = number;
}
/**
* 获取日期
* @return 日期
*/
public String getDate() {
return date;
}
/**
* 设置日期
* @param date 日期
*/
public void setDate(String date) {
this.date = date;
}
/**
* 获取金额
* @return 金额
*/
public BigDecimal getAmount() {
return amount;
}
/**
* 设置金额
* @param amount 金额
*/
public void setAmount(BigDecimal amount) {
this.amount = amount;
}
/**
* 获取税额
* @return 税额
*/
public BigDecimal getTaxAmount() {
return taxAmount;
}
/**
* 设置税额
* @param taxAmount 税额
*/
public void setTaxAmount(BigDecimal taxAmount) {
this.taxAmount = taxAmount;
}
/**
* 获取价税合计
* @return 价税合计
*/
public BigDecimal getTotalAmount() {
return totalAmount;
}
/**
* 设置价税合计
* @param totalAmount 价税合计
*/
public void setTotalAmount(BigDecimal totalAmount) {
this.totalAmount = totalAmount;
}
/**
* 获取销售方名称
* @return 销售方名称
*/
public String getSellerName() {
return sellerName;
}
/**
* 设置销售方名称
* @param sellerName 销售方名称
*/
public void setSellerName(String sellerName) {
this.sellerName = sellerName;
}
@Override
public String toString() {
return "NewInvoice{" +
"number='" + number + '\'' +
", date='" + date + '\'' +
", amount=" + amount +
", taxAmount=" + taxAmount +
", totalAmount=" + totalAmount +
", sellerName='" + sellerName + '\'' +
'}';
}
}- 报表期望的实体类（InvoiceSubset）：
import lombok.Data;
import java.math.BigDecimal;
@Data
public class InvoiceSubset {
/**
* 文件绝对路径
*/
//private String fileAbsolutePath;
/**
* 发票代码
*/
private String code;
/**
* 发票号码
*/
private String number;
/**
* 新版发票号码
*/
private String newNumber;
/**
* 开票日期
*/
private String date;
/**
* 校验码
*/
private String checksum;
/**
* 销售方名称
*/
private String sellerName;
/**
* 合计金额
*/
private BigDecimal amount;
/**
* 合计税额
*/
private BigDecimal taxAmount;
/**
* 价税合计金额
*/
private BigDecimal totalAmount;
}- 上述三个实体类中Invoice和NewInvoice仅在提取信息阶段生效，最终输出结果依赖的是InvoiceSubset实体类
4.2正则表达式枚举类
- 将所有正则表达式统一放入枚举类中管理，方便后期对部分无法提取的全电发票进行正则修改和新增，降低后期维护成本
public enum InvoiceRegexEnum {
/**
* 机器编码、发票代码、发票号码、开票日期和校验码的提取正则
*/
REGULAR_A("机器编号:(?<machineNumber>\\d{12})|发票代码:(?<code>\\d{12})|发票号码:(?<number>\\d{8})|:(?<date>\\d{4}年\\d{2}月\\d{2}日)|校验码:(?<checksum>\\d{20}|\\S{4,})"),
/**
* 新版发票的机器编码、发票代码、发票号码、开票日期和校验码的提取正则
*/
REGULAR_A_NEW("发票号码:(?<number>\\d{20})|:(?<date>\\d{4}年\\d{2}月\\d{2}日)|(售名称|销名称):(?<name>\\S*)"),
/**
* 发票号码备用提取正则
*/
REGULAR_A_1("(国制|制普通发票)(?<number>\\d{8})"),
/**
* 发票号码跨行提取正则
*/
REGULAR_A_1R("发票号码:(?<number>\\d{7})[\\s\\S]*?(\\d+)"),
/**
* 开票日期备用提取正则
*/
REGULAR_A_2("开票日期:(?<date>\\d{4}\\d{2}月\\d{2}日)"),
/**
* 发票代码备用提取正则
*/
REGULAR_A_3("发票代码(?<code>\\d{12})"),
/**
* 发票代码跨行提取正则
*/
REGULAR_A_3R("发票代码:(?<code>\\d{10})[\\s\\S]*?(\\d+)"),
/**
* 金额、税额提取正则，匹配形如 "合计¥?金额¥?税额" 的文本
*/
REGULAR_B("合计¥?(?<amount>[^ \\f\\n\\r\\t\\v*]*)(?:¥?(?<taxAmount>\\S*)|\\*+)\\s"),
/**
* 金额提取正则，用于匹配结果有误的修正
*/
REGULAR_BR("合计¥(?<amount>\\d+\\.\\d+)"),
/**
* 金额、税额备用提取正则
*/
REGULAR_B_1("合\\u0020*计\\u0020*¥?(?<amount>[^ ]*)\\u0020+¥?(?:(?<taxAmount>\\S*)|\\*+)\\s"),
/**
* 价税合计提取正则，匹配“价税合计（大写）XXX（小写）¥YYY”格式的文本
*/
REGULAR_C("价税合计\\u0028大写\\u0029(?<amountString>\\S*)\\u0028小写\\u0029¥?(?<amount>\\S*)\\s"),
/**
* 收款人、复核、开票人、销售方提取正则，匹配格式为“收款人:xxx复核:xxx开票人:xxx销售方”的字符串
*/
REGULAR_D("收款人:(?<payee>\\S*)复核:(?<reviewer>\\S*)开票人:(?<drawer>\\S*)销售方"),
/**
* 发票类型提取正则，匹配"xxx通发票"格式的发票类型
*/
REGULAR_E("(?<p>\\S*)通发票"),
/**
* 发票类型提取正则，匹配"xxx用发票"格式的发票类型
*/
REGULAR_E_1("(?<p>\\S*)用发票"),
/**
* 发票类型提取 - 辅助正则
*/
REGULAR_E_AUX("(?:国|统|一|发|票|监|制)"),
/**
* 购买方信息提取正则
*/
REGULAR_F("名称:(?<name>\\S*)|纳税人识别号:(?<code>\\S*)|地址、电话:(?<address>\\S*)|开户行及账号:(?<account>\\S*)|电子支付标识:(?<account2>\\S*)"),
/**
* 针对深圳发票的销售方名称提取正则
*/
REGULAR_FR("名称:(?<name>\\S*)"),
/**
* 处理除了金额和税额之外的其他文本元素正则
*/
REGULAR_G("^(-?\\d+)(\\.\\d+)?$"),
/**
* 检查当前详细项字符串是否符合特定条件正则
*/
REGULAR_H("\\S+\\d*(%|免税|不征税|出口零税率|普通零税率)\\S*"),
REGULAR_H_1("^ *\\d*(%|免税|不征税|出口零税率|普通零税率)\\S*"),
REGULAR_H_2("\\S+\\d+%[\\-\\d]+\\S*"),
REGULAR_H_3("^ *\\d*(%|免税|不征税|出口零税率|普通零税率)\\S*");
private final String regex;
InvoiceRegexEnum(String regex) {
this.regex = regex;
}
public String getRegex() {
return regex;
}
}4.3发票提取类
- PDFKeyWordPosition提取类，用于从给定的PDF文档中提取指定关键字的位置信息
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.text.PDFTextStripper;
import org.apache.pdfbox.text.TextPosition;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class PDFKeyWordPosition extends PDFTextStripper {
private List<String> keywordList;
private Map<String, List<Position>> positionListMap;
public PDFKeyWordPosition() throws IOException {
super();
}
/**
* 获取坐标信息
*
* @param keywordList 要搜索的关键字列表
* @param document PDF 文档
* @return 关键字的位置信息映射
* @throws
*/
public Map<String, List<Position>> getCoordinate(List<String> keywordList, PDDocument document) throws IOException {
super.setSortByPosition(true);
this.keywordList = keywordList;
this.positionListMap = new HashMap<>();
super.setStartPage(1);
super.setEndPage(1);
Writer dummy = new OutputStreamWriter(new ByteArrayOutputStream());
super.writeText(document, dummy);
return positionListMap;
}
@Override
protected void writeString(String string, List<TextPosition> textPositions) throws IOException {
for (String keyword : keywordList) {
int foundIndex = 0;
List<Position> positionList = positionListMap.computeIfAbsent(keyword, k -> new ArrayList<>());
for (int i = 0; i < textPositions.size(); i++) {
TextPosition textPosition = textPositions.get(i);
String str = textPosition.getUnicode();
if (0 < str.length() && str.charAt(0) == keyword.charAt(foundIndex)) {
foundIndex++;
int count = foundIndex;
for (int j = foundIndex; j < keyword.length(); j++) {
if (i + j >= textPositions.size()) {
break;
} else {
String s = textPositions.get(i + j).getUnicode();
if (0 < s.length() && s.charAt(0) == keyword.charAt(j)) {
count++;
}
}
}
if (count == keyword.length()) {
foundIndex = 0;
Position position = new Position();
position.setX(textPosition.getX());
position.setY(textPosition.getY());
positionList.add(position);
positionListMap.put(keyword, positionList);
}
}
}
}
}
}
class Position {
public Position() {
}
public Position(float x, float y) {
super();
this.x = x;
this.y = y;
}
float x;
float y;
public float getX() {
return x;
}
public void setX(float x) {
this.x = x;
}
public float getY() {
return y;
}
public void setY(float y) {
this.y = y;
}
@Override
public String toString() {
return "Position [x=" + x + ", y=" + y + "]";
}
}- 旧版发票提取类（PdfInvoiceExtractor），旧版全电发票识别类，通过加载和解析PDF文件，使用正则表达式匹配提取关键信息，包括发票代码、发票号码、开票日期、校验码、金额、税额、总计、销售方名称等。
import com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.entity.Detail;
import com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.entity.Invoice;
import org.apache.commons.lang3.StringUtils;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.text.PDFTextStripper;
import org.apache.pdfbox.text.PDFTextStripperByArea;
import java.awt.*;
import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.List;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.InvoiceRegexEnum.*;
/**
* 处理电子发票识别类
*/
public class PdfInvoiceExtractor {
public static Invoice extract(File file) throws IOException {
// 创建一个新的发票对象
Invoice invoice = new Invoice();
// 加载 PDF 文件并获取第一页
PDDocument doc = PDDocument.load(file);
PDPage firstPage = doc.getPage(0);
// 获取页面宽度
int pageWidth = Math.round(firstPage.getCropBox().getWidth());
// 创建 PDF 文本提取工具
PDFTextStripper textStripper = new PDFTextStripper();
textStripper.setSortByPosition(true);
// 提取整个 PDF 文本内容
String fullText = textStripper.getText(doc);
// 如果页面旋转了，重新计算页面宽度
if (firstPage.getRotation() != 0) {
pageWidth = Math.round(firstPage.getCropBox().getHeight());
}
// 替换文本中的全角字符为半角字符
String allText = replace(fullText).replaceAll("（", "(").replaceAll("）", ")").replaceAll("￥", "¥");
// 使用正则表达式匹配和提取发票信息
{
Pattern pattern = Pattern.compile(REGULAR_A.getRegex());
Pattern patternNumber = Pattern.compile(REGULAR_A_1.getRegex());
Pattern patternNumberReplace = Pattern.compile(REGULAR_A_1R.getRegex());
Pattern patternDate = Pattern.compile(REGULAR_A_2.getRegex());
Pattern patternCode = Pattern.compile(REGULAR_A_3.getRegex());
Pattern patternCodeReplace = Pattern.compile(REGULAR_A_3R.getRegex());
Matcher matcher = pattern.matcher(allText);
while (matcher.find()) {
if (matcher.group("machineNumber") != null) {
invoice.setMachineNumber(matcher.group("machineNumber"));
} else if (matcher.group("code") != null) {
invoice.setCode(matcher.group("code"));
} else if (matcher.group("number") != null) {
invoice.setNumber(matcher.group("number"));
} else if (matcher.group("date") != null) {
String rawDate = matcher.group("date");
try {
SimpleDateFormat inputDateFormat = new SimpleDateFormat("yyyy年MM月dd日");
SimpleDateFormat outputDateFormat = new SimpleDateFormat("yyyy-MM-dd");
Date parsedDate = inputDateFormat.parse(rawDate);
String formattedDate = outputDateFormat.format(parsedDate);
invoice.setDate(formattedDate);
} catch (ParseException e) {
System.out.println("无法解析日期：" + rawDate);
}
} else if (matcher.group("checksum") != null) {
invoice.setChecksum(matcher.group("checksum"));
}
if (invoice.getNumber() == null){
Matcher matcher2 = patternNumber.matcher(allText);
if (matcher2.find()) {
invoice.setNumber(matcher2.group("number"));
}
if (invoice.getNumber() == null){
Matcher matcher2Replace = patternNumberReplace.matcher(allText);
while (matcher2Replace.find()) {
String firstNumber = matcher2Replace.group("number");
String secondNumber = matcher2Replace.group(2);
invoice.setNumber(firstNumber + secondNumber);
}
}
}
if (invoice.getDate() == null){
Matcher matcher3 = patternDate.matcher(allText);
if (matcher3.find()) {
String rawDate = matcher3.group("date");
try {
SimpleDateFormat inputDateFormat = new SimpleDateFormat("yyyyMM月dd日");
SimpleDateFormat outputDateFormat = new SimpleDateFormat("yyyy-MM-dd");
Date parsedDate = inputDateFormat.parse(rawDate);
String formattedDate = outputDateFormat.format(parsedDate);
invoice.setDate(formattedDate);
} catch (Exception e) {
System.out.println("无法解析日期：" + rawDate);
}
}
}
if (invoice.getCode() == null){
Matcher matcher4 = patternCode.matcher(allText);
if (matcher4.find()) {
invoice.setCode(matcher4.group("code"));
}
if (invoice.getCode() == null){
Matcher matcher4Replace = patternCodeReplace.matcher(allText);
while (matcher4Replace.find()) {
String firstCode = matcher4Replace.group("code");
String secondCode = matcher4Replace.group(2);
invoice.setCode(secondCode + firstCode);
}
}
}
}
}
{
Pattern pattern = Pattern.compile(REGULAR_B.getRegex());
Matcher matcher = pattern.matcher(allText);
if (matcher.find()) {
try {
invoice.setAmount(new BigDecimal(matcher.group("amount")));
} catch (Exception e) {
// 不处理
}
try {
invoice.setTaxAmount(new BigDecimal(matcher.group("taxAmount")));
} catch (Exception e) {
invoice.setTaxAmount(new BigDecimal(0));
}
}
}
if (null == invoice.getAmount()) {
Pattern pattern = Pattern.compile(REGULAR_B_1.getRegex());
Matcher matcher = pattern.matcher(fullText);
if (matcher.find()) {
try {
invoice.setAmount(new BigDecimal(matcher.group("amount")));
} catch (Exception e) {
invoice.setAmount(new BigDecimal(0));
}
try {
invoice.setTaxAmount(new BigDecimal(matcher.group("taxAmount")));
} catch (Exception e) {
invoice.setTaxAmount(new BigDecimal(0));
}
}
}
{
Pattern pattern = Pattern.compile(REGULAR_C.getRegex());
Matcher matcher = pattern.matcher(allText);
if (matcher.find()) {
invoice.setTotalAmountString(matcher.group("amountString"));
try {
invoice.setTotalAmount(new BigDecimal(matcher.group("amount")));
} catch (Exception e) {
invoice.setTotalAmount(new BigDecimal(0));
}
}
}
{
Pattern pattern = Pattern.compile(REGULAR_D.getRegex());
Matcher matcher = pattern.matcher(allText);
if (matcher.find()) {
invoice.setPayee(matcher.group("payee"));
invoice.setReviewer(matcher.group("reviewer"));
invoice.setDrawer(matcher.group("drawer"));
}
if (allText.indexOf("通行费") > 0 && allText.indexOf("车牌号") > 0) {
invoice.setType("通行费");
}
}
{
Pattern type00Pattern = Pattern.compile(REGULAR_E.getRegex());
Matcher m00 = type00Pattern.matcher(allText);
if (m00.find()) {
invoice.setTitle(m00.group("p").replaceAll(REGULAR_E_AUX.getRegex(), "") + "通发票");
if (null == invoice.getType()) {
invoice.setType("普通发票");
}
} else {
Pattern type01Pattern = Pattern.compile(REGULAR_E_1.getRegex());
Matcher m01 = type01Pattern.matcher(allText);
if (m01.find()) {
invoice.setTitle(m01.group("p").replaceAll(REGULAR_E_AUX.getRegex(), "") + "用发票");
if (null == invoice.getType()) {
invoice.setType("专用发票");
}
}
}
}
PDFKeyWordPosition kwp = new PDFKeyWordPosition();
Map<String, List<Position>> positionListMap = kwp.getCoordinate(Arrays.asList("机器编号", "税率", "价税合计", "合计", "开票日期", "规格型号", "车牌号", "开户行及账号", "密", "码", "区"), doc);
PDFTextStripperByArea stripper = new PDFTextStripperByArea();
stripper.setSortByPosition(true);
PDFTextStripperByArea detailStripper = new PDFTextStripperByArea();
detailStripper.setSortByPosition(true);
{
Position machineNumber;
if (positionListMap.get("机器编号").size() > 0) {
machineNumber = positionListMap.get("机器编号").get(0);
} else {
machineNumber = positionListMap.get("开票日期").get(0);
machineNumber.setY(machineNumber.getY() + 30);
}
Position taxRate = positionListMap.get("税率").get(0);
Position totalAmount = positionListMap.get("价税合计").get(0);
Position amount = positionListMap.get("合计").get(0);
Position model = null;
if (!positionListMap.get("规格型号").isEmpty()) {
model = positionListMap.get("规格型号").get(0);
} else {
model = positionListMap.get("车牌号").get(0);
model.setX(model.getX() - 15);
}
List<Position> account = positionListMap.get("开户行及账号");
Position buyer;
Position seller;
if (account.size() < 2) {
buyer = new Position(51, 122);
seller = new Position(51, 341);
} else {
buyer = account.get(0);
seller = account.get(1);
}
int maqX = 370;
List<Position> mi = positionListMap.get("密");
List<Position> ma = positionListMap.get("码");
List<Position> qu = positionListMap.get("区");
for (Position position : mi) {
float x1 = position.getX();
for (Position value : ma) {
float x2 = value.getX();
if (Math.abs(x1 - x2) < 5) {
for (Position item : qu) {
float x3 = item.getX();
if (Math.abs(x2 - x3) < 5) {
maqX = Math.round((x1 + x2 + x3) / 3);
}
}
}
}
}
{
int x = Math.round(model.getX()) - 13;
int y = Math.round(taxRate.getY()) + 5;
int h = Math.round(amount.getY()) - Math.round(taxRate.getY()) - 25;
detailStripper.addRegion("detail", new Rectangle(0, y, pageWidth, h));
stripper.addRegion("detailName", new Rectangle(0, y, x, h));
stripper.addRegion("detailPrice", new Rectangle(x, y, pageWidth, h));
}
{
int x = maqX + 10;
int y = Math.round(machineNumber.getY()) + 10;
int w = pageWidth - maqX - 10;
int h = Math.round(taxRate.getY() - 5) - y;
stripper.addRegion("password", new Rectangle(x, y, w, h));
}
{
int x = Math.round(buyer.getX()) - 15;
int y = Math.round(machineNumber.getY()) + 10;
int w = maqX - x - 5;
int h = Math.round(buyer.getY()) - y + 20;
stripper.addRegion("buyer", new Rectangle(x, y, w, h));
}
{
int x = Math.round(seller.getX()) - 15;
int y = Math.round(totalAmount.getY()) + 10;
int w = maqX - x - 5;
int h = Math.round(seller.getY()) - y + 20;
stripper.addRegion("seller", new Rectangle(x, y, w, h));
}
}
stripper.extractRegions(firstPage);
detailStripper.extractRegions(firstPage);
doc.close();
invoice.setPassword(StringUtils.trim(stripper.getTextForRegion("password")));
{
String buyer = replace(stripper.getTextForRegion("buyer"));
Pattern pattern = Pattern.compile(REGULAR_F.getRegex());
Matcher matcher = pattern.matcher(buyer);
while (matcher.find()) {
if (matcher.group("name") != null) {
invoice.setBuyerName(matcher.group("name"));
}
else if (matcher.group("code") != null) {
invoice.setBuyerCode(matcher.group("code"));
}
else if (matcher.group("address") != null) {
invoice.setBuyerAddress(matcher.group("address"));
}
else if (matcher.group("account") != null) {
invoice.setBuyerAccount(matcher.group("account"));
}
else if (matcher.group("account2") != null) {
invoice.setBuyerAccount(matcher.group("account2"));
}
}
}
{
String seller = replace(stripper.getTextForRegion("seller"));
Pattern pattern = Pattern.compile(REGULAR_F.getRegex());
Matcher matcher = pattern.matcher(seller);
while (matcher.find()) {
if (matcher.group("name") != null) {
if (matcher.group("name").contains("出有限公司")){
String replace = matcher.group("name").replace("出有限公司", "出版社有限公司");
invoice.setSellerName(replace);
} else if (matcher.group("name").contains("贸有公司")) {
String replace = matcher.group("name").replace("贸有公司", "贸易有限公司");
invoice.setSellerName(replace);
} else {
invoice.setSellerName(matcher.group("name"));
}
}
else if (matcher.group("code") != null) {
invoice.setSellerCode(matcher.group("code"));
}
else if (matcher.group("address") != null) {
invoice.setSellerAddress(matcher.group("address"));
}
else if (matcher.group("account") != null) {
invoice.setSellerAccount(matcher.group("account"));
}
}
}
if (invoice.getSellerName() == null){
Pattern patternReplace = Pattern.compile(REGULAR_FR.getRegex());
Matcher matcherReplace = patternReplace.matcher(allText);
while (matcherReplace.find()) {
if (matcherReplace.group("name") != null) {
if (!matcherReplace.group("name").contains("学院") || !matcherReplace.group("name").contains("大学")){
if (matcherReplace.group("name").contains("出有限公司")){
String replace = matcherReplace.group("name").replace("出有限公司", "出版社有限公司");
invoice.setSellerName(replace);
} else if (matcherReplace.group("name").contains("贸有公司")) {
String replace = matcherReplace.group("name").replace("贸有公司", "贸易有限公司");
invoice.setSellerName(replace);
} else {
invoice.setSellerName(matcherReplace.group("name"));
}
}
}
}
}
{
List<String> skipList = new ArrayList<>();
List<Detail> detailList = new ArrayList<>();
String[] detailPriceStringArray = stripper.getTextForRegion("detailPrice")
.replaceAll(" ", " ").replaceAll(" ", " ").replaceAll("\r", "").split("\\n");
for (String detailString : detailPriceStringArray) {
Detail detail = new Detail();
detail.setName("");
String[] itemArray = StringUtils.split(detailString, " ");
if (2 == itemArray.length) {
detail.setAmount(new BigDecimal(itemArray[0]));
detail.setTaxAmount(new BigDecimal(itemArray[1]));
detailList.add(detail);
}
else if (2 < itemArray.length) {
detail.setAmount(new BigDecimal(itemArray[itemArray.length - 3]));
String taxRate = itemArray[itemArray.length - 2];
if (taxRate.indexOf("免税") > 0 || taxRate.indexOf("不征税") > 0 || taxRate.indexOf("出口零税率") > 0
|| taxRate.indexOf("普通零税率") > 0 || !taxRate.contains("%")) {
detail.setTaxRate(new BigDecimal(0));
detail.setTaxAmount(new BigDecimal(0));
} else {
BigDecimal rate = new BigDecimal(Integer.parseInt(taxRate.replaceAll("%", "")));
detail.setTaxRate(rate.divide(new BigDecimal(100)));
detail.setTaxAmount(new BigDecimal(itemArray[itemArray.length - 1]));
}
for (int j = 0; j < itemArray.length - 3; j++) {
if (itemArray[j].matches(REGULAR_G.getRegex())) {
if (null == detail.getCount()) {
detail.setCount(new BigDecimal(itemArray[j]));
} else {
detail.setPrice(new BigDecimal(itemArray[j]));
}
} else {
if (itemArray.length >= j + 1 && !itemArray[j + 1].matches(REGULAR_G.getRegex())) {
detail.setUnit(itemArray[j + 1]);
detail.setModel(itemArray[j]);
j++;
} else if (itemArray[j].length() > 2) {
detail.setModel(itemArray[j]);
} else {
detail.setUnit(itemArray[j]);
}
}
}
detailList.add(detail);
} else {
skipList.add(detailString);
}
}
String[] detailNameStringArray = stripper.getTextForRegion("detailName").replaceAll(" ", " ").replaceAll(" ", " ")
.replaceAll("\r", "").split("\\n");
String[] detailStringArray = replace(detailStripper.getTextForRegion("detail")).replaceAll("\r", "").split("\\n");
int i = 0, j = 0, h = 0, m = 0;
Detail lastDetail = null;
for (String detailString : detailStringArray) {
if (m < detailNameStringArray.length) {
if (detailString.matches(REGULAR_H.getRegex())
&& !detailString.matches(REGULAR_H_1.getRegex())
&& detailString.matches(REGULAR_H_2.getRegex())
|| detailStringArray.length > i + 1
&& detailStringArray[i + 1].matches(REGULAR_H_3.getRegex())) {
if (j < detailList.size()) {
lastDetail = detailList.get(j);
lastDetail.setName(detailNameStringArray[m]);
}
j++;
} else if (null != lastDetail && StringUtils.isNotBlank(detailNameStringArray[m])) {
if (skipList.size() > h) {
String skip = skipList.get(h);
if (detailString.endsWith(skip)) {
if (detailString.equals(skip)) {
m--;
} else {
lastDetail.setName(lastDetail.getName() + detailNameStringArray[m]);
}
lastDetail.setModel(lastDetail.getModel() + skip);
h++;
} else {
lastDetail.setName(lastDetail.getName() + detailNameStringArray[m]);
}
} else {
lastDetail.setName(lastDetail.getName() + detailNameStringArray[m]);
}
}
}
i++;
m++;
}
invoice.setDetailList(detailList);
if (invoice.getAmount().add(invoice.getTaxAmount()).compareTo(invoice.getTotalAmount()) != 0){
Pattern patternReplace = Pattern.compile(REGULAR_BR.getRegex());
Matcher matcherReplace = patternReplace.matcher(allText);
if (matcherReplace.find()) {
try {
invoice.setAmount(new BigDecimal(matcherReplace.group("amount")));
invoice.setTaxAmount(invoice.getTotalAmount().subtract(invoice.getAmount()));
} catch (Exception e) {
// 不处理
}
}
}
if (invoice.getTotalAmount().compareTo(BigDecimal.ZERO) == 0){
if (invoice.getAmount().compareTo(BigDecimal.ZERO) == 0){
invoice.setAmount((!detailList.isEmpty()) ? detailList.get(0).getAmount() : BigDecimal.ZERO);
invoice.setTaxAmount((!detailList.isEmpty()) ? detailList.get(0).getTaxAmount() : BigDecimal.ZERO);
}
invoice.setTotalAmount(invoice.getAmount().add(invoice.getTaxAmount()));
}
}
return invoice;
}
/**
* 替换字符串中的空格、全角空格、冒号和特殊空白字符为标准字符。
* @param str 要进行替换的字符串
* @return 替换后的字符串
*/
private static String replace(String str) {
return str.replaceAll(" ", "").replaceAll(" ", "").replaceAll("：", ":").replaceAll(" ", "");
}
}- 新版发票提取类（NewPdfInvoiceExtractor），新版全电发票识别类，通过加载和解析PDF文件，使用正则表达式匹配提取关键信息，包括发票号码、开票日期、金额、税额、合计、销售方名称。
import com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.entity.NewInvoice;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.text.PDFTextStripper;
import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.InvoiceRegexEnum.*;
/**
* 处理电子发票识别类
* @author b16mt
*/
public class NewPdfInvoiceExtractor {
public static NewInvoice extract(File file) throws IOException {
NewInvoice invoice = new NewInvoice();
PDDocument doc = PDDocument.load(file);
PDPage firstPage = doc.getPage(0);
int pageWidth = Math.round(firstPage.getCropBox().getWidth());
PDFTextStripper textStripper = new PDFTextStripper();
textStripper.setSortByPosition(true);
String fullText = textStripper.getText(doc);
if (firstPage.getRotation() != 0) {
pageWidth = Math.round(firstPage.getCropBox().getHeight());
}
String allText = replace(fullText).replaceAll("（", "(").replaceAll("）", ")").replaceAll("￥", "¥");
{
Pattern pattern = Pattern.compile(REGULAR_A_NEW.getRegex());
Pattern patternNumber = Pattern.compile(REGULAR_A_1.getRegex());
Pattern patternDate = Pattern.compile(REGULAR_A_2.getRegex());
Matcher matcher = pattern.matcher(allText);
while (matcher.find()) {
if (matcher.group("number") != null) {
invoice.setNumber(matcher.group("number"));
} else if (matcher.group("date") != null) {
String rawDate = matcher.group("date");
try {
SimpleDateFormat inputDateFormat = new SimpleDateFormat("yyyy年MM月dd日");
SimpleDateFormat outputDateFormat = new SimpleDateFormat("yyyy-MM-dd");
Date parsedDate = inputDateFormat.parse(rawDate);
String formattedDate = outputDateFormat.format(parsedDate);
invoice.setDate(formattedDate);
} catch (ParseException e) {
System.out.println("无法解析日期：" + rawDate);
}
} else if (matcher.group("name") != null){
invoice.setSellerName(matcher.group("name"));
}
if (matcher.group("number") == null){
Matcher matcher2 = patternNumber.matcher(allText);
if (matcher2.find()) {
invoice.setNumber(matcher2.group("number"));
}
}
if (matcher.group("date") == null){
Matcher matcher3 = patternDate.matcher(allText);
if (matcher3.find()) {
String rawDate = matcher3.group("date");
try {
SimpleDateFormat inputDateFormat = new SimpleDateFormat("yyyyMM月dd日");
SimpleDateFormat outputDateFormat = new SimpleDateFormat("yyyy-MM-dd");
Date parsedDate = inputDateFormat.parse(rawDate);
String formattedDate = outputDateFormat.format(parsedDate);
invoice.setDate(formattedDate);
} catch (Exception e) {
System.out.println("无法解析日期：" + rawDate);
}
}
}
}
}
{
Pattern pattern = Pattern.compile(REGULAR_B.getRegex());
Matcher matcher = pattern.matcher(allText);
if (matcher.find()) {
try {
invoice.setAmount(new BigDecimal(matcher.group("amount")));
} catch (Exception e) {
// 不处理
}
try {
invoice.setTaxAmount(new BigDecimal(matcher.group("taxAmount")));
} catch (Exception e) {
invoice.setTaxAmount(new BigDecimal(0));
}
}
}
if (null == invoice.getAmount()) {
Pattern pattern = Pattern.compile(REGULAR_B_1.getRegex());
Matcher matcher = pattern.matcher(fullText);
if (matcher.find()) {
try {
invoice.setAmount(new BigDecimal(matcher.group("amount")));
} catch (Exception e) {
invoice.setAmount(new BigDecimal(0));
}
try {
invoice.setTaxAmount(new BigDecimal(matcher.group("taxAmount")));
} catch (Exception e) {
invoice.setTaxAmount(new BigDecimal(0));
}
}
}
invoice.setTotalAmount(invoice.getAmount().add(invoice.getTaxAmount()));
return invoice;
}
/**
* 替换字符串中的空格、全角空格、冒号和特殊空白字符为标准字符。
* @param str 要进行替换的字符串
* @return 替换后的字符串
*/
private static String replace(String str) {
return str.replaceAll(" ", "").replaceAll(" ", "").replaceAll("：", ":").replaceAll(" ", "");
}
}4.4发票操作类：
- 旧版发票操作类（InvoiceExtractor）：
import com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.entity.Detail;
import com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.PdfInvoiceExtractor;
import com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.entity.Invoice;
import lombok.extern.slf4j.Slf4j;
import java.io.File;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
@Slf4j
public class InvoiceExtractor {
private static final String PDF_EXTENSION = ".pdf";
/**
* 处理指定文件夹中的PDF发票文件
* @param folderPath 文件夹路径
* @return 包含提取信息的 Invoice 列表
*/
public static List<Invoice> pdfProcessInvoicesInFolder(String folderPath) {
File folder = new File(folderPath);
File[] files = folder.listFiles();
List<Invoice> resultList = new ArrayList<>();
if (files != null) {
for (File file : files) {
if (isPdfFile(file)) {
Invoice result = extractInvoice(file.getAbsolutePath());
if (result != null) {
Invoice returnResult = createProcessedInvoice(result);
resultList.add(returnResult);
} else {
handleExtractionError(file);
}
}
}
}
return resultList;
}
/**
* 输出发票提取内容
* @param invoiceList 发票提取结果集合
*/
public static void printListInvoice(List<Invoice> invoiceList, String type){
int sum = 0;
for (Invoice invoice : invoiceList) {
sum++;
if ("String".equals(type) || "string".equals(type)){
System.out.println("\n文件绝对路径：" + invoice.getFileAbsolutePath() +
"\n发票代码: " + invoice.getCode() +
"\n发票号码: " + invoice.getNumber() +
"\n开票日期: " + invoice.getDate() +
"\n校验码后六位: " + invoice.getChecksum() +
"\n总价: " + invoice.getTotalAmount() +
"\n金额: " + invoice.getAmount() +
"\n税额: " + invoice.getTaxAmount() +
"\n销售方名称: " + invoice.getSellerName());
} else if ("List".equals(type) || "list".equals(type)) {
System.out.println(invoice);
} else {
System.out.println(invoice);
}
}
System.out.println("\nTotal:" + sum);
}
/**
* 检查文件是否为PDF文件
* @param file 要检查的文件
* @return 如果是PDF文件，返回 true，否则返回 false
*/
private static boolean isPdfFile(File file) {
return file.isFile() && file.getName().toLowerCase().endsWith(PDF_EXTENSION);
}
/**
* 创建一个处理后的 Invoice 对象
* @param result 原始的 Invoice 对象
* @return 处理后的 Invoice 对象
*/
private static Invoice createProcessedInvoice(Invoice result) {
Invoice returnResult = new Invoice();
String checksum = result.getChecksum();
if (checksum != null) {
checksum = (checksum.length() > 6) ? checksum.substring(checksum.length() - 6) : checksum;
} else {
System.out.println("未提取到校验码~");
}
BigDecimal amount = (result.getAmount().compareTo(BigDecimal.ZERO) == 0) ? getAmountFromDetailList(result) : result.getAmount();
BigDecimal taxAmount = (result.getTaxAmount().compareTo(BigDecimal.ZERO) == 0) ? getTaxAmountFromDetailList(result) : result.getTaxAmount();
returnResult.setFileAbsolutePath(result.getFileAbsolutePath());
returnResult.setCode(result.getCode());
returnResult.setNumber(result.getNumber());
returnResult.setDate(result.getDate());
returnResult.setChecksum(checksum);
returnResult.setTotalAmount(result.getTotalAmount());
returnResult.setAmount(amount);
returnResult.setTaxAmount(taxAmount);
returnResult.setSellerName(result.getSellerName());
return returnResult;
}
/**
* 从发票的 detailList 中获取金额
* @param result 原始的 Invoice 对象
* @return 从 detailList 中获取的金额，如果 detailList 为空则返回 BigDecimal.ZERO
*/
private static BigDecimal getAmountFromDetailList(Invoice result) {
List<Detail> detailList = result.getDetailList();
return (!detailList.isEmpty()) ? detailList.get(0).getAmount() : BigDecimal.ZERO;
}
/**
* 从发票的 detailList 中获取税额
* @param result 原始的 Invoice 对象
* @return 从 detailList 中获取的税额，如果 detailList 为空则返回 BigDecimal.ZERO
*/
private static BigDecimal getTaxAmountFromDetailList(Invoice result) {
List<Detail> detailList = result.getDetailList();
return (!detailList.isEmpty()) ? detailList.get(0).getTaxAmount() : BigDecimal.ZERO;
}
/**
* 处理提取失败的情况，输出错误信息
* @param file 提取失败的文件
*/
private static void handleExtractionError(File file) {
log.warn("文件: {}\t提取失败~~~\n", file.getName());
}
/**
* 从本地文件或URL中提取发票信息。
* @param filePath 本地文件路径或发票的URL。
* @return 包含提取信息的 Invoice 对象。
*/
private static Invoice extractInvoice(String filePath) {
File sourceFile = new File(filePath);
if (!sourceFile.exists()) {
log.error("指定的源文件不存在");
//throw new IllegalArgumentException("指定的源文件不存在");
}
Invoice result = null;
try {
result = PdfInvoiceExtractor.extract(sourceFile);
result.setFileAbsolutePath(sourceFile.getAbsolutePath());
} catch (Exception e) {
e.printStackTrace();
result = new Invoice();
result.setTitle("error");
}
return result;
}
}- 新版发票操作类（NewInvoiceExtractor）：
import com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.NewPdfInvoiceExtractor;
import com.xjl.common.utils.invoice.extractor.util.invoice.extractor.dependent.entity.NewInvoice;
import lombok.extern.slf4j.Slf4j;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
@Slf4j
public class NewInvoiceExtractor {
private static final String PDF_EXTENSION = ".pdf";
/**
* 处理指定文件夹中的PDF发票文件
* @param folderPath 文件夹路径
* @return 包含提取信息的 NewInvoice 列表
*/
public static List<NewInvoice> newPdfProcessInvoicesInFolder(String folderPath) {
File folder = new File(folderPath);
File[] files = folder.listFiles();
List<NewInvoice> resultList = new ArrayList<>();
if (files != null) {
for (File file : files) {
if (isPdfFile(file)) {
NewInvoice result = extractInvoice(file.getAbsolutePath());
if (result != null) {
NewInvoice returnResult = createProcessedInvoice(result);
resultList.add(returnResult);
} else {
handleExtractionError(file);
}
}
}
}
return resultList;
}
/**
* 处理指定的PDF发票文件
* @param filePath 文件路径
* @return 包含提取信息的 NewInvoice 列表
*/
public static NewInvoice newPdfProcessInvoicesInFile(String filePath) {
File file = new File(filePath);
NewInvoice returnResult = new NewInvoice();
if (isPdfFile(file)) {
NewInvoice result = extractInvoice(file.getAbsolutePath());
if (result != null) {
returnResult = createProcessedInvoice(result);
} else {
handleExtractionError(file);
}
}
return returnResult;
}
/**
* 输出发票提取内容
* @param invoiceList 发票提取结果集合
*/
public static void newPrintListInvoice(List<NewInvoice> invoiceList, String type){
int sum = 0;
for (NewInvoice invoice : invoiceList) {
sum++;
if ("String".equals(type) || "string".equals(type)){
System.out.println("\n文件绝对路径: " + invoice.getFileAbsolutePath() +
"\n发票号码: " + invoice.getNumber() +
"\n开票日期: " + invoice.getDate() +
"\n总价: " + invoice.getTotalAmount() +
"\n金额: " + invoice.getAmount() +
"\n税额: " + invoice.getTaxAmount() +
"\n销售方名称: " + invoice.getSellerName());
} else if ("List".equals(type) || "list".equals(type)) {
System.out.println(invoice);
} else {
System.out.println(invoice);
}
}
System.out.println("\nTotal:" + sum);
}
/**
* 检查文件是否为PDF文件
* @param file 要检查的文件
* @return 如果是PDF文件，返回 true，否则返回 false
*/
private static boolean isPdfFile(File file) {
return file.isFile() && file.getName().toLowerCase().endsWith(PDF_EXTENSION);
}
/**
* 创建一个处理后的 NewInvoice 对象
* @param result 原始的 NewInvoice 对象
* @return 处理后的 NewInvoice 对象
*/
private static NewInvoice createProcessedInvoice(NewInvoice result) {
NewInvoice returnResult = new NewInvoice();
returnResult.setFileAbsolutePath(result.getFileAbsolutePath());
returnResult.setNumber(result.getNumber());
returnResult.setDate(result.getDate());
returnResult.setTotalAmount(result.getTotalAmount());
returnResult.setAmount(result.getAmount());
returnResult.setTaxAmount(result.getTaxAmount());
returnResult.setSellerName(result.getSellerName());
return returnResult;
}
/**
* 处理提取失败的情况，输出错误信息
* @param file 提取失败的文件
*/
private static void handleExtractionError(File file) {
log.warn("文件: {}\t提取失败~~~\n", file.getName());
}
/**
* 从本地文件或URL中提取发票信息。
* @param filePath 本地文件路径或发票的URL。
* @return 包含提取信息的 NewInvoice 对象。
*/
private static NewInvoice extractInvoice(String filePath) {
File sourceFile = new File(filePath);
if (!sourceFile.exists()) {
log.error("指定的源文件不存在");
//throw new IllegalArgumentException("指定的源文件不存在");
}
NewInvoice result = null;
try {
result = NewPdfInvoiceExtractor.extract(sourceFile);
result.setFileAbsolutePath(sourceFile.getAbsolutePath());
} catch (Exception e) {
e.printStackTrace();
result = new NewInvoice();
}
return result;
}
}4.5提取结果：
- 包含ofd、新版、旧版全电发票的部分提取结果
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