Spring mvc文件下载IE/Edge中文乱码解决

引言

    在spring mvc项目开发中,我们可能经常遇到文件的上传和下载操作。这里将讲解在IE/Edge浏览器中文件下载中文乱码的解决方法。

一.解决spring mvc IE/Edge浏览器乱码

编写controller测试代码:

package net.xqlee.project.controller;

import java.net.URLEncoder;

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

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

@Controller
public class FileController {
	/**
	 * 文件下载
	 * 
	 * @param request
	 * @param response
	 */
	@GetMapping("download.do")
	public void downloadFile(HttpServletRequest request, HttpServletResponse response) {
		try {
			String fileName = "中文测试.DAT";
			response.getWriter().write("中文测试你好");
			fileName = dealFileName(request, fileName);
			response.addHeader("Content-Disposition", "attachment;filename=" + fileName);
		} catch (Exception e) {
			e.printStackTrace();// logger
		}
	}

	/**
	 * 处理IE/Edge（win10）浏览器中文乱码
	 * 
	 * @param request
	 * @param fileName
	 * @return
	 */
	public String dealFileName(HttpServletRequest request, String fileName) {
		try {
			String codeFileName = "";
			String agent = request.getHeader("User-Agent");
			if (agent == null) {
				return fileName;
			}
			agent = agent.toUpperCase();
			if (null == agent) {
				codeFileName = new String(fileName.getBytes("UTF-8"), "ISO8859-1");
			} else if (-1 != agent.indexOf("MSIE") || -1 != agent.indexOf("TRIDENT") || -1 != agent.indexOf("EDGE")) {
				codeFileName = URLEncoder.encode(fileName, "UTF-8");
			} else {
				codeFileName = new String(fileName.getBytes("UTF-8"), "ISO8859-1");
			}
			return codeFileName;
		} catch (Exception e) {
			e.printStackTrace();// logger
			return fileName;
		}
	}
}

注意观察上面的代码，解决乱码主要在dealFilename();这个方法中进行处理的。FileName进行get UTF8字符集是因为当前代码的编码格式为UTF-8如果是GBK则更改为GBK

二.测试IE/Edge浏览器中文乱码的解决

2.1启动刚才controller所在的项目。

2.2访问文件下载地址查看结果

文件下载地址为:http://localhost:8080/download.do

观察IE浏览器:

从上图可以看到中文已经正常显示。接下来测试win10的Edge浏览器:


从上图也能看到中午呢乱码问题已经得到解决。