这是第二次使用IText导出PDF了,上一次使用就是在网上看别人的使用案例东拼西凑整出来的,这次自己记录一下开发过程。
1. pom文件所需要的jar包:
<!--IText生成PDF-->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.3</version>
</dependency>
<!--用于输出中文-->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itext-asian</artifactId>
<version>5.2.0</version>
</dependency>
2. 下面先生成一个简单的PDF试一下,看看jar包或者其他的一些东西有没有问题
Document document = new Document();
String path = this.getClass().getResource("/").getPath();
File file = new File("E:/test.pdf");
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("E:/test.pdf"));
document.open();
document.add(new Paragraph("Hello World!"));
document.close();
writer.close();
生成效果
3. OK没有问题,然后开始根据自己需求完善PDF,我这次的需求是做一个巡检,先来一个基本信息展示
3.1、自定义字体:
public class PDFConstants {
public static BaseFont bf;
static {
try {
bf = BaseFont.createFont("E:\\git_projects\\BridgeDataManager\\BackGroundCode\\bridge_detection\\src\\main\\java\\com\\new3s\\bridge_detection\\commons\\itext\\msyh.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
} catch (DocumentException | IOException e) {
e.printStackTrace();
}
}
// 注册字体
public static Font FONT_25 = new Font(bf, 25);
public static Font FONT_20 = new Font(bf, 20);
public static Font FONT_16 = new Font(bf, 16);
public static Font FONT_12 = new Font(bf, 12);
public static Font BOLD_FONT_10_GREEN = new Font(bf, 10, Font.BOLD, BaseColor.GREEN);
public static Font BOLD_FONT_13 = new Font(bf, 13, Font.BOLD);
}
这里的字体是我从网上下载的免费字体,百度一搜就有。
3.2、修改过后的代码:
//巡检信息--是我这次需要展示的数据,根据自己的需求自行更改
InspectionInfoDto inspectionInfoDto = (InspectionInfoDto) this.getInspectionInfo(inspectionId).getData();
InspectionDto inspectionDto = inspectionInfoDto.getInspectionDto();
BridgeDto bridgeDto = inspectionInfoDto.getBridgeDto();
BridgeStructureDto bridgeStructureDto = inspectionInfoDto.getBridgeStructureDto();
//这里是边距,可根据自己需求设置
Document document = new Document(PageSize.A4, 50, 50, 50, 10);
String path = this.getClass().getResource("/").getPath();
// File file = new File(path +"检测报告.pdf");
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("E:/test.pdf"));
document.open();
//4. 顶部标题
Paragraph topTitle = new Paragraph(bridgeDto.getRoadNo() + " " + bridgeDto.getBridgeName(), PDFConstants.FONT_25);
//设置标题居中
topTitle.setAlignment(Element.ALIGN_CENTER);
document.add(topTitle);
//一行空格,用于拉开标题与表格距离
document.add(new Paragraph(" ", PDFConstants.FONT_12));
document.add(new Paragraph(" ", PDFConstants.FONT_12));
//标题1
Paragraph title1 = new Paragraph("1、桥梁概况", PDFConstants.FONT_20);
document.add(title1);
document.add(new Paragraph(" ", PDFConstants.FONT_12));
String title1Remark = " " + bridgeDto.getBridgeName() + "中心桩号"
+ bridgeDto.getStakeNo() + ",上部结构为"
+ bridgeStructureDto.getUpStructureSpan()
+ bridgeStructureDto.getUpStructureForm()
+ ",横向" + bridgeDto.getHorizontal() + "片,"
+ "桥长 " + bridgeStructureDto.getBridgeLength() + " 米,"
+ "桥宽 " + bridgeStructureDto.getBridgeWidth() + " 米。"
+ "下部结构为" + bridgeStructureDto.getDownStructureAbutment() + "桥墩、台。"
+ "桥面铺装为" + bridgeDto.getPavingMaterial() + "。"
+ "该桥设计汽车荷载等级为" + bridgeDto.getDesignLoad() + "。"
+ "管养单位为" + bridgeDto.getCompanyName() + "。";
document.add(new Paragraph(title1Remark, PDFConstants.FONT_12));
document.add(new Paragraph(" 该桥基本参数见表 1,桥梁全貌见照片 1-1~照片 1-2。", PDFConstants.FONT_12));
Paragraph table1Title = new Paragraph("表1 桥梁基本状况一览表", PDFConstants.BOLD_FONT_10_GREEN);
table1Title.setAlignment(Element.ALIGN_CENTER);
document.add(table1Title);
document.close();
writer.close();
效果展示:
3.3、 基本信息完成,再来一个更加直观的表格
######自定义表格util
public class PdfUtil {
/**
* 创建默认列宽,指定列数、水平(居中、右、左)的表格
*
* @param colNumber
* @param align
* @return
*/
public static PdfPTable createTable(int colNumber, int align) {
PdfPTable table = new PdfPTable(colNumber);
try {
// 设置表格宽度比例为%100
table.setWidthPercentage(100);
// 设置表格的宽度
table.setTotalWidth(PageSize.A4.getWidth() - 60);
// 锁住宽度
table.setLockedWidth(true);
// 设置表格上面空白宽度
table.setSpacingBefore(20f);
// 设置表格下面空白宽度
table.setSpacingAfter(20f);
// 设置表格默认为无边框
table.getDefaultCell().setBorder(1);
// 设置翻页后表格头部还继续存在
table.setHeaderRows(1);
// 设置水平样式
table.setHorizontalAlignment(align);
} catch (Exception e) {
e.printStackTrace();
}
return table;
}
/**
* 创建单元格(指定字体)
*
* @param value
* @param font
* @return
*/
public static PdfPCell createCell(String value, Font font, int align) {
PdfPCell cell = new PdfPCell();
cell.setVerticalAlignment(align);
cell.setHorizontalAlignment(align);
cell.setPhrase(new Phrase(value, font));
cell.setFixedHeight(20f);
return cell;
}
}
目前只用到这两个,后面根据需求添加
新增表格后的代码:
//巡检信息--是我这次需要展示的数据,根据自己的需求自行更改
InspectionInfoDto inspectionInfoDto = (InspectionInfoDto) this.getInspectionInfo(inspectionId).getData();
InspectionDto inspectionDto = inspectionInfoDto.getInspectionDto();
BridgeDto bridgeDto = inspectionInfoDto.getBridgeDto();
BridgeStructureDto bridgeStructureDto = inspectionInfoDto.getBridgeStructureDto();
//这里是边距,可根据自己需求设置
Document document = new Document(PageSize.A4, 50, 50, 50, 10);
String path = this.getClass().getResource("/").getPath();
// File file = new File(path +"检测报告.pdf");
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("E:/test.pdf"));
document.open();
//4. 顶部标题
Paragraph topTitle = new Paragraph(bridgeDto.getRoadNo() + " " + bridgeDto.getBridgeName(), PDFConstants.FONT_25);
//设置标题居中
topTitle.setAlignment(Element.ALIGN_CENTER);
document.add(topTitle);
//一行空格,用于拉开标题与表格距离
document.add(new Paragraph(" ", PDFConstants.FONT_12));
document.add(new Paragraph(" ", PDFConstants.FONT_12));
//标题1
Paragraph title1 = new Paragraph("1、桥梁概况", PDFConstants.FONT_20);
document.add(title1);
document.add(new Paragraph(" ", PDFConstants.FONT_12));
String title1Remark = " " + bridgeDto.getBridgeName() + "中心桩号"
+ bridgeDto.getStakeNo() + ",上部结构为"
+ bridgeStructureDto.getUpStructureSpan()
+ bridgeStructureDto.getUpStructureForm()
+ ",横向" + bridgeDto.getHorizontal() + "片,"
+ "桥长 " + bridgeStructureDto.getBridgeLength() + " 米,"
+ "桥宽 " + bridgeStructureDto.getBridgeWidth() + " 米。"
+ "下部结构为" + bridgeStructureDto.getDownStructureAbutment() + "桥墩、台。"
+ "桥面铺装为" + bridgeDto.getPavingMaterial() + "。"
+ "该桥设计汽车荷载等级为" + bridgeDto.getDesignLoad() + "。"
+ "管养单位为" + bridgeDto.getCompanyName() + "。";
document.add(new Paragraph(title1Remark, PDFConstants.FONT_12));
document.add(new Paragraph(" 该桥基本参数见表 1,桥梁全貌见照片 1-1~照片 1-2。", PDFConstants.FONT_12));
Paragraph table1Title = new Paragraph("表1 桥梁基本状况一览表", PDFConstants.BOLD_FONT_10_GREEN);
table1Title.setAlignment(Element.ALIGN_CENTER);
document.add(table1Title);
//生成一个4列表格
PdfPTable table1 = PdfUtil.createTable(4, Element.ALIGN_CENTER);
table1.addCell(PdfUtil.createCell("路线名称", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeDto.getRoadNo() + bridgeDto.getRoadName(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("桥梁桩号", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeDto.getStakeNo(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("桥梁名称", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeDto.getBridgeName(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("桥长(m)", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeStructureDto.getBridgeLength(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("桥宽(m)", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeStructureDto.getBridgeWidth(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("跨径组合(m)", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeStructureDto.getUpStructureSpan(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("上部结构形式", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeStructureDto.getUpStructureForm(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("下部结构形式", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeStructureDto.getDownStructureForm(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("设计荷载等级", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeDto.getDesignLoad(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell("通车时间", PDFConstants.FONT_12, Element.ALIGN_CENTER));
table1.addCell(PdfUtil.createCell(bridgeDto.getOpenToTraffic(), PDFConstants.FONT_12, Element.ALIGN_CENTER));
document.add(table1);
document.close();
writer.close();
看下效果:
3.4、 下一步,配图片
新增代码:
//放入桥面图片
for (ShootDto bridgeShoot : bridgeShoots) {
document.add(new Paragraph(" "));
document.add(new Paragraph(" "));
byte[] bytes = fastDFSClient.download(bridgeShoot.getShootUrl());
Image image = Image.getInstance(bytes);
image.setAlignment(Element.ALIGN_CENTER);
image.scaleAbsolute(300, 200);
document.add(image);
Paragraph imageTitle = new Paragraph("照片" + bridgeShoot.getShootNo() + " " + bridgeDto.getRoadNo() + " " + bridgeShoot.getShootName(), PDFConstants.BOLD_FONT_10);
imageTitle.setAlignment(Element.ALIGN_CENTER);
document.add(imageTitle);
int indexOf = bridgeShoots.indexOf(bridgeShoot);
if (indexOf == 0){
document.newPage();
}
}
效果
本次需求的功能点就只有这些了,再后面都是图片表格图片表格的重复,有可能会用到表格的单元格合并,这是单元格合并的代码
public static PdfPCell createCell(String value, Font font, int align, int colspan, int rowspan) {
PdfPCell cell = new PdfPCell();
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
cell.setHorizontalAlignment(align);
cell.setColspan(colspan);
cell.setRowspan(rowspan);
cell.setFixedHeight(rowspan * 25f);
cell.setPhrase(new Phrase(value, font));
return cell;
}