文件下载后台java代码，前后端代码完整版，兼容ie文件下载，且ie下载时页面不会跳转

代码，前后端代码完整版，兼容ie文件下载，且ie下载时页面不会跳转"/>

文件下载后台java代码，前后端代码完整版，兼容ie文件下载，且ie下载时页面不会跳转

 前端代码

第一步：在jsp对应的地方加上下面的代码

<iframe style="display: none;" id="download_iframe"></iframe>

 第二步：定义点击事件下载文件

<a id="attachFile" onclick="downLoad('http://downloadFile?fileId=fastuser/M00/00/03/CsL9JFwXPAyATC9OAAkVVGMybN8085.jpg','Hydrangeas.jpg')" href="javascript:void(0)"><i class="icon icon-attach" style="margin-top:4px"></i></a>function downLoad(url,fileName){//对中文文件进行编码，防止ie因为编码问题，而导致的服务没有反应var fileName2 = encodeURI(fileName);url = url +"&fileName="+fileName2;$("#download_iframe").attr("src", url);
} 

    @RequestMapping("/downloadFile")public void downloadFile(String fileId,String fileName, HttpServletRequest request,HttpServletResponse response) throws FileNotFoundException {      byte[] content = null;        try {content = FDFSUtil.download(fileId);response.setContentType("Image/" + fileName); // 设置相应类型,告诉浏览器输出的内容为图片response.setHeader("Pragma", "No-cache"); // 设置响应头信息，告诉浏览器不要缓存此内容response.setHeader("Cache-Control", "no-cache");response.setHeader("Content-Disposition", "attachment;filename=" + ExcelUtil.toUtf8String(fileName));OutputStream toClient = response.getOutputStream();toClient.write(content);toClient.flush();toClient.close();} catch (Exception e) {e.printStackTrace();}}