使用Freemarker导出word,附带图片

原创已于 2025-03-19 09:46:16 修改 · 1.2k 阅读

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文章标签：

#word

于 2018-11-14 17:17:09 首次发布

本文介绍了一种使用Java和FreeMarker模板引擎动态生成Word文档的方法，包括配置FreeMarker、处理图片并将其转换为Base64编码，以及从数据库获取数据填充到Word模板中，最终实现Word文档的导出。

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1.工具类WordUtils.java



import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;

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

import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.utility.DateUtil;

public class WordUtils {
     //配置信息,代码本身写的还是很可读的,就不过多注解了  
    private static Configuration configuration = null;  
    //这里注意的是利用WordUtils的类加载器动态获得模板文件的位置  
   // private static final String templateFolder = WordUtils.class.getClassLoader().getResource("../../").getPath() + "WEB-INF/templetes/";  
    static {  
        configuration = new Configuration();  
        configuration.setDefaultEncoding("utf-8");  
        configuration.setClassForTemplateLoading(WordUtils.class,"/com/iyoungsun/safe/utils"); //这里要把ftl文件放在WordUtils类同目录里
   }  
  
    private WordUtils() {  
        throw new AssertionError();  
    }  
  
    public static void exportMillCertificateWord(HttpServletRequest request, HttpServletResponse response, Map map,String title,String ftlFile) throws IOException {  
        Template freemarkerTemplate = configuration.getTemplate(ftlFile);  
        File file = null;  
        InputStream fin = null;  
        ServletOutputStream out = null;  
        try {  
            // 调用工具类的createDoc方法生成Word文档  
            file = createDoc(map,freemarkerTemplate);  
            fin = new FileInputStream(file);  
  
            response.setCharacterEncoding("utf-8");  
            response.setContentType("application/msword");  
            // 设置浏览器以下载的方式处理该文件名  
            Date currentTime = new Date();  
            SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
            String dateString = formatter.format(currentTime);  
            String fileName = title+dateString+ ".doc";  
            response.setHeader("Content-Disposition", "attachment;filename="  
                    .concat(String.valueOf(URLEncoder.encode(fileName, "UTF-8"))));  
  
            out = response.getOutputStream();  
            byte[] buffer = new byte[512];  // 缓冲区  
            int bytesToRead = -1;  
            // 通过循环将读入的Word文件的内容输出到浏览器中  
            while((bytesToRead = fin.read(buffer)) != -1) {  
                out.write(buffer, 0, bytesToRead);  
            }  
        } finally {  
            if(fin != null) fin.close();  
            if(out != null) out.close();  
            if(file != null) file.delete(); // 删除临时文件  
        }  
    }  
  
    private static File createDoc(Map<?, ?> dataMap, Template template) {  
        String name =  "test.doc";  
        File f = new File(name);  
        Template t = template;  
        try {  
            // 这个地方不能使用FileWriter因为需要指定编码类型否则生成的Word文档会因为有无法识别的编码而无法打开  
            Writer w = new OutputStreamWriter(new FileOutputStream(f), "utf-8");  
            t.process(dataMap, w);  
            w.close();  
        } catch (Exception ex) {  
            ex.printStackTrace();  
            throw new RuntimeException(ex);  
        }  
        return f;  
    }  
}

2.关于处理图片方法


	//获得图片的base64码
    @SuppressWarnings("deprecation")
    public String getImageBase(String src) {
        if(src==null||src==""){
            return "";
        }
        File file = new File(getRequest().getRealPath("/")+src.replace(getRequest().getContextPath(), ""));
        if(!file.exists()) {
            return "";
        }
        InputStream in = null;
        byte[] data = null;  
        try {
            in = new FileInputStream(file);
        } catch (FileNotFoundException e1) {
            e1.printStackTrace();
        }
        try {  
            data = new byte[in.available()];  
            in.read(data);  
            in.close();  
        } catch (IOException e) {  
          e.printStackTrace();  
        } 
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);
    }

3.下面是我项目的接口方法，我使用的是jFinal

 public void exportWord(){
        Calendar calendar = Calendar.getInstance();// 取当前日期。
        int id = getParaToInt("id");
        if(id>0){
        	String sql = "SELECT ypr.id,yd.id as d_id,yd.name AS dname,yps.comment,yps.level,ypr.integral,ypr.record_time,ypr.supervise_name,ypr.ban,ypr.location,ypr.work_ticket,ypr.job_manager,ypr.work_content,ypr.problem "
    				+ "FROM ys_probity_standard yps JOIN ys_project_record ypr ON ypr.standard_id = yps.id "
    				+ "JOIN ys_department yd ON yd.id = ypr.department_id "
    				+ "WHERE yps.level != '' AND yps.level NOT IN ('廉政禁令','质量禁令') AND ypr.id="+id;
    		List<ProjectRecord> list = ProjectRecord.dao.find(sql);
    		Map<String, Object> map = new HashMap<String, Object>();
    		for (int i = 0; i < list.size(); i++) {
				String location =  list.get(i).get("location");
				String time = list.get(i).get("record_time");
				String supervise_name = list.get(i).get("supervise_name");
				String dname = list.get(i).get("dname");
				String work_ticket = list.get(i).get("work_ticket");
				String job_manager = list.get(i).get("job_manager");
				String work_content = list.get(i).get("work_content");
				String problem = list.get(i).get("problem");
				String level = list.get(i).get("level");
				String comment = list.get(i).get("comment");
				String integral = list.get(i).get("integral");
    			//获得数据  
    			 
    			map.put("date_num", calendar.get(Calendar.YEAR)+"");
    			map.put("location", location!=null?location:"");
    			map.put("record_time",time!=null?time:"");
    			map.put("supervise_name",supervise_name!=null?supervise_name:""); 
    			map.put("dname", dname!=null?dname:"");
    			map.put("work_ticket", work_ticket!=null?work_ticket:"");
    			map.put("job_manager", job_manager!=null?job_manager:"");
    			map.put("work_content", work_content!=null?work_content:"");
    			map.put("problem", problem!=null?problem:"");
    			map.put("level", level!=null?level:"");
    			map.put("comment", comment!=null?comment:"");
    			map.put("integral", !"0".equals(integral)?integral:"违反安全禁令");
			}
            //查询图片
    		List<YsImage> yiListall = YsImage.dao.find("select * from ys_image where ys_image.pid=" + id);
    		List<String> imgList = new ArrayList<String>();;
    		for (int i = 0; i <yiListall.size(); i++) {
    			String image = yiListall.get(i).get("image");
    			imgList.add(getImageBase(image)!=null?getImageBase(image):"");
			}
    	
    		
    		map.put("imgList",imgList);
    		try {
    			WordUtils.exportMillCertificateWord(getRequest(),getResponse(),map,"督查记录","abc.ftl");
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}    
        }
    }

4.关于.ftl文件模板的配置方法

（1）首先在word上编辑好自己的模板，下面是建的样式