Java通过FreeMarker生成Word文件

迷南。 2022-02-13 01:37 359阅读 0赞

**1.pom.xml配置freemarker依赖包**

<dependency>
        <groupId>org.freemarker</groupId>
        <artifactId>freemarker</artifactId>
        <version>2.3.28</version>
    </dependency>

**2.打开word模版文件，另存为.xml格式，然后将.xml文件后缀改为.ftl，引入.ftl模板文件到项目指定目录**

**![20190426175413325.png][]**

**3.编写生成Word工具类**

import java.io.BufferedInputStream;
    import java.io.BufferedOutputStream;
    import java.io.BufferedWriter;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.OutputStream;
    import java.io.OutputStreamWriter;
    import java.io.Writer;
    import java.net.URLEncoder;
    import java.util.Map;
     
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
     
    import freemarker.template.Configuration;
    import freemarker.template.Template;
     
    public class DcWordUtil {
    	
    	public static void download(HttpServletRequest request,HttpServletResponse response,String newWordName,Map dataMap) {
    		Configuration configuration = new Configuration();
    		configuration.setDefaultEncoding("utf-8");                                       
    		configuration.setClassForTemplateLoading(DcWordUtil.class, "/templates");//模版文件的存放路径
    		Template t = null;
    		try {
    			//读取模版文件
    			t = configuration.getTemplate("word.ftl","utf-8");                  
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		File outFile = null;
    		Writer out = null;
    		String filename = newWordName;
    		try {
    			outFile = new File("word.doc");
    			out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile),"utf-8"));               			
    		} catch (Exception e1) {
    			e1.printStackTrace();
    		} 
    		try {
    			t.process(dataMap, out);
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		try {
    			out.flush();
    			out.close();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    		InputStream fis = null;
    		OutputStream toClient = null;
    		try {
    			fis = new BufferedInputStream(new FileInputStream(outFile));
    			byte[] buffer = new byte[fis.available()];
    			fis.read(buffer);
    			fis.close();
    			// 清空response
    			response.reset();
    			// 设置response的Header
    			filename = URLEncoder.encode(filename, "utf-8");//要用URLEncoder转下才能正确显示中文名称
    			response.addHeader("Content-Disposition", "attachment;filename=" + filename+"");
    			response.addHeader("Content-Length", "" + outFile.length());
    			toClient = new BufferedOutputStream(response.getOutputStream());
    			response.setContentType("application/octet-stream");
    			toClient.write(buffer);
    			toClient.flush();
    		} catch (Exception e) {
    		} finally{
    			try {
    				if(toClient!=null){
    					toClient.close();
    				}
    			} catch (Exception e) {
    			}
    			try {
    				if(fis!=null){
    					fis.close();
    				}
    			} catch (IOException e) {
    			}		
    		}
    	}
    }

**4.业务层调用**

@RequestMapping("/exportWord")
    public String exportWord(Model model,HttpServletRequest request,HttpServletResponse response) {
    	SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    	System.out.println("导出开始时间："+format.format(new Date()));
    	List<Map<String, Object>> list = jkconfigDao.exportWord();
    	Map<String, Object> dataMap = new HashMap<String, Object>();
    	dataMap.put("list", list);
    	String title = "测试.doc";
    	DcWordUtil.download(request, response, title, dataMap);
    	System.out.println("导出结束时间："+format.format(new Date()));
    	return null;
    }

**5.ftl文件通过表达式获取值**

List集合遍历：<\#list list as list>    第一个list 不能变 ，第二个list 为变量名 ，第三个list 为别名，遍历结束加上</\#list>

List集合遍历获取索引：$\{list\_index\}

List集合遍历拼接索引动态取值：$\{list\['qq$\{list\_index\}'\]\}

Map集合取值：$\{list.name\}

IF判断：<\#if list\_index\*3+1 <= qqcount>$\{list\_index\*3+1\}</\#if>

[20190426175413325.png]: /images/20220213/5c7004ca55ba42319cf2e9264c41242e.png