使用Aspose.Words for Java完成复杂Word与PDF的导出

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大新哥666 2021-07-07 13:41:44

文章标签 JAVA Aspose.Word 文章分类 Java 后端开发

[size=xx-large]使用Aspose.Words for Java完成复杂Word与PDF的导出[/size]
[size=x-large]
使用Aspose.Words for Java 可以导出复杂WORD PDF HTML 多种数据格式
官方下载地址:[url]http://www.aspose.com/java/word-component.aspx[/url]
我所用的版本是Aspose.Words.jdk16.jar
[/size]

[size=large]先看效果图[/size]

[size=large]1-对数据行的导出,分别是PDF与WORD格式[/size]

[img]http://dl.iteye.com/upload/attachment/0083/9017/8a985bbe-3686-379e-8e6b-84863ad3bf45.jpg[/img]

[img]http://dl.iteye.com/upload/attachment/0083/9019/c7c6fa4c-d6ad-39ea-a726-5fb41e66b624.jpg[/img]

[size=large]2-对类似于个人简历的数据导出带图片,分别是PDF与WORD格式[/size]

[img]http://dl.iteye.com/upload/attachment/0083/9021/d640f516-7ce4-3e61-a4d9-3a4d5249df0e.jpg[/img]

[img]http://dl.iteye.com/upload/attachment/0083/9023/398c6a20-2837-342f-84df-73853d9a03f3.jpg[/img]

[size=large]
使用该组件一共分为4个步骤
1-定义模板
2-加载模板
3-填充数据
4-设置导出格式并导出
接下来我们按照以上4个步骤进行报表的导出

首先定义模板（可以再附件中下载）这里只介绍最后一个个人简历的模板
一个普通的自定义word就可以

«TableStart:Employees»
«TableEnd:Employees»
这一对标记代表一个数据单元 Employees 是可以自定义的填充数据源时要对应上

其他的就好理解了比如«FirstName» 就是数据源中的属性

[img]http://dl.iteye.com/upload/attachment/0083/9030/031eee08-c91e-36c7-ab71-1c3c46398ce5.jpg[/img]

接下来开始我们的导出之旅吧！！！！

第一步定义一个导出的抽象类


package com.epkj.words;

import org.springframework.stereotype.Component;

import com.aspose.words.Document;

@Component("ProcessWord")
public abstract class ProcessWord {

	public abstract Document execute(String templatePath) throws Exception;

}

第二部写一个具体的实现类


package com.epkj.words;

import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.stereotype.Component;

import com.aspose.words.Document;

/**
 * 带图片的导出
 */
@Component("EmployeesReportDemo")
public class EmployeesReportDemo extends ProcessWord {

	@Override
	public Document execute(String templatePath) throws Exception {
//1 读取模板
		Document doc = new Document(templatePath + "/" + "EmployeesReportDemo.doc");
		String imagePath = templatePath + "/" + "employees.jpg";
//2 填充数据源
		doc.getMailMerge().executeWithRegions(new MapMailMergeDataSource(getMapList(imagePath), "Employees"));
		return doc;
	}

	private List<Map<String, Object>> getMapList(String imagePath) throws IOException {
		List<Map<String, Object>> dataList = new ArrayList<Map<String,Object>>();

		//读取一个二进制图片
		FileInputStream fis = new FileInputStream(imagePath);
		byte[] image = new byte[fis.available()];
		fis.read(image);
		fis.close();

		for (int i = 0; i < 20; i++) {
			Map<String, Object> record = new HashMap<String, Object>();
//这里的key要与模板中的<<xxxxx>>对应
			record.put("FirstName", "欧阳");
			record.put("LastName", "夏丹");
			record.put("Title", "个人简历导出Word PDF");
			record.put("Address", "中国 北京市 东城区");
			record.put("City", "北京");
			record.put("Country", "辽宁沈阳");
			//二进制数据
			record.put("PhotoBLOB", image);
			dataList.add(record);
		}
		return dataList;
	}

}

！！！因为Aspose.Words for Java不支持HashMap的数据格式，需要我们自己实现
好在它提供了IMailMergeDataSource接口


package com.epkj.words;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import com.aspose.words.IMailMergeDataSource;

/**
 * 实现对HashMap的支持
 */
public class MapMailMergeDataSource implements IMailMergeDataSource {

	private List<Map<String, Object>> dataList;

	private int index;

	//word模板中的«TableStart:tableName»«TableEnd:tableName»对应
	private String tableName = null;

	/**
	 * @param dataList 数据集
	 * @param tableName 与模板中的Name对应
	 */
	public MapMailMergeDataSource(List<Map<String, Object>> dataList, String tableName) {
		this.dataList = dataList;
		this.tableName = tableName;
		index = -1;
	}

	/**
	 * @param data 单个数据集
	 * @param tableName 与模板中的Name对应
	 */
	public MapMailMergeDataSource(Map<String, Object> data, String tableName) {
		if(this.dataList == null) {
			this.dataList = new ArrayList<Map<String,Object>>();
			this.dataList.add(data);
		}
		this.tableName = tableName;
		index = -1;
	}

	/**
	 * 获取结果集总数
	 * @return
	 */
	private int getCount() {
		return this.dataList.size();
	}

	@Override
	public IMailMergeDataSource getChildDataSource(String arg0)
			throws Exception {
		return null;
	}

	@Override
	public String getTableName() throws Exception {
		return this.tableName;
	}

	/**
	 * 实现接口
	 * 获取当前index指向数据行的数据
	 * 将数据存入args数组中即可
	 * @return ***返回false则不绑定数据***
	 */
	@Override
	public boolean getValue(String key, Object[] args) throws Exception {
		if(index < 0 || index >= this.getCount()) {
            return false;
        }
		if(args != null && args.length > 0) {
			args[0] = this.dataList.get(index).get(key);
			return true;
		} else {
			return false;
		}
	}

	/**
	 * 实现接口
	 * 判断是否还有下一条记录
	 */
	@Override
	public boolean moveNext() throws Exception {
		index += 1;
		if(index >= this.getCount())
        {
            return false;
        }
        return true;
	}

}

这样我们就把数据填充好了。接下来就是导出了


package com.epkj.words;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import com.aspose.words.Document;
import com.aspose.words.SaveFormat;

/**
 * 所有导出功能由该类完成
 */
@Controller
@RequestMapping("/DemoBaseController.do")
public class DemoBaseController {

	@RequestMapping(params = "method=exportDoc")
	public Object exportDoc(HttpServletRequest request, HttpServletResponse response) {

		ServletContext sc = request.getSession().getServletContext();

		//加载对应的模板
		String command = request.getParameter("command");

		//下载的文件名
		String docName = request.getParameter("docName");

		if(docName == null) {
			docName = System.currentTimeMillis() + "";
		}

		//返回到客户端的格式(DOC DOCX PDF)
		String formatType = request.getParameter("formatType");

		if(formatType == null) {
			formatType = "DOCX";
		}

		ProcessWord pw = getProcessWordByName(command, sc);

		try {
			Document doc = pw.execute(sc.getRealPath("/Designer"));
			sendToBrowser(doc, docName, formatType, true, response);
			response.flushBuffer();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
		return null;
	}

	public WebApplicationContext getWebApplicationContext(ServletContext sc) {
		return WebApplicationContextUtils.getRequiredWebApplicationContext(sc);
	}

	private ProcessWord getProcessWordByName(String name, ServletContext sc) {
		return (ProcessWord) this.getWebApplicationContext(sc).getBean(name);
	}

	/**
	 * 向客户端发送数据
	 * @param doc com.aspose.words.Document
	 * @param docName 返回客户端的word文件名
	 * @param formatType DOC 或者 DOCX
	 * @param openNewWindow 在线打开或者下载
	 * @param response
	 * @throws Exception
	 */
	private void sendToBrowser(Document doc, String docName, String formatType,
			boolean openNewWindow, HttpServletResponse response)
			throws Exception {
		String extension = formatType;

		if (formatType.equals("WML") || formatType.equals("FOPC"))
			extension = "XML";

		String fileName = docName + "." + extension;

		if (openNewWindow)
			response.setHeader("content-disposition", "attachment; filename="
					+ fileName);
		else
			response.addHeader("content-disposition", "inline; filename="
					+ fileName);

		if ("DOC".equals(formatType)) {
			response.setContentType("application/msword");
			doc.save(response.getOutputStream(), SaveFormat.DOC);
		} else if ("DOCX".equals(formatType)) {
			response.setContentType("application/vnd.openxmlformats-officedocument.wordprocessingml.document");
			doc.save(response.getOutputStream(), SaveFormat.DOCX);
		} else if ("PDF".equals(formatType)) {
			response.setContentType("application/pdf");
			doc.save(response.getOutputStream(), SaveFormat.PDF);
		} 
	}

}