前端下载文档的java工具类

package com.ry.project.util.commUtil;

import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;

import java.io.*;
import java.util.Map;

public class WordUtil {
 private Configuration configuration = null;

 public WordUtil() {
 configuration = new Configuration();
 configuration.setDefaultEncoding("utf-8");
 }
//指定下载路径
 public void createDoc(Map dataMap, String fileName) throws UnsupportedEncodingException {
 configuration.setClassForTemplateLoading(this.getClass(), "/");
 Template doct = null;
 try {
 doct = configuration.getTemplate("infoModel.ftl", "utf-8");
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 File outfile = new File(fileName);

 Writer out = null;
 FileOutputStream outputStream = null;

 try {
 outputStream = new FileOutputStream(outfile);
 OutputStreamWriter oWriter = new OutputStreamWriter(outputStream, "UTF-8");
 out = new BufferedWriter(oWriter);

 } catch (FileNotFoundException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 try {
 doct.process(dataMap, out);
 out.close();
 outputStream.close();

 } catch (TemplateException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 }
//不指定下载路径，，，默认浏览器下载，需要在代码中设置请求头
 public void createDoc(Map dataMap, OutputStream outfil) throws UnsupportedEncodingException {

 configuration.setClassForTemplateLoading(this.getClass(), "/");
 System.out.println(">>>>>class:" + this.getClass());
 Template doct = null;
 try {
 doct = configuration.getTemplate("model.ftl", "utf-8");
 } catch (IOException e) {
 e.printStackTrace();
 }
 Writer out = null;
 OutputStreamWriter oWriter = new OutputStreamWriter(outfil, "UTF-8");
 out = new BufferedWriter(oWriter);

 try {
 doct.process(dataMap, out);
 System.out.println("《《《《《《《《下载结束》》》》》");
 out.close();

 } catch (TemplateException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 }

 }

response.reset();//清除空白行纺织报错
response.setHeader("Access-Control-Allow-Origin", "*");//所有域都可以跨
response.setHeader("Content-Type", "application/octet-stream;charset=UTF-8");//二进制 流文件
response.setHeader("Content-Disposition", "attachment;filename=" + endCodeFileName+".doc");//下载及其文件名
response.setHeader("Connection", "close");//关闭请求头连接
//设置文件在浏览器打开还是下载
response.setContentType("application/x-download");

}