js请求服务器下载文档（doc、wps、txt等到本地）

最新推荐文章于 2025-07-01 15:26:20 发布

王小强-

最新推荐文章于 2025-07-01 15:26:20 发布

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分类专栏： java 文章标签：浏览器下载文档 js请求下载文档

本文链接：https://blog.youkuaiyun.com/wq_wangqiang/article/details/92814685

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博客展示了通过JS请求实现文档下载的代码。定义了downloadTemplate函数，创建隐藏form表单以post方式提交请求到后台，同时给出了请求代码示例。此外还提及了后台代码，但未详细展示。

js请求代码

downloadTemplate('./auditreport/exportWPS.do?filename='+encodeURIComponent(returnInfo[2]), 'filename', 'test');

/**
       * 用于下载导入模板时的影藏form表单的提交，采用post方式提交
       * @param action 请求后台方法
       * @param type 文件类型
       * @param value 文件名
       */
       function downloadTemplate(action, type, value){
       var form = document.createElement('form');
       document.body.appendChild(form);
       form.style.display = "none";
       form.action = action;
       form.id = 'wps';
       form.method = 'post';
       var newElement = document.createElement("input");
       newElement.setAttribute("type","hidden");
       newElement.name = type;
       newElement.value = value;
       form.appendChild(newElement);
       form.submit();
       loaderHide();
       }

后台代码

	@RequestMapping("/exportWPS.do")
	public void getExportFile(HttpServletRequest request,HttpServletResponse resp) {
		 URL basePath = WordUtils.class.getClassLoader().getResource("");
	     String separator = File.separator;
	     String filename = basePath.getPath() + separator +request.getParameter("filename");
	     
	        DataInputStream in = null;
	        OutputStream out = null;
	        try{
	            resp.reset();// 清空输出流
	            
	            String resultFileName = System.currentTimeMillis() + ".wps";
	            resultFileName = URLEncoder.encode(resultFileName,"UTF-8");  
	            resp.setCharacterEncoding("UTF-8");  
	            resp.setHeader("Content-disposition", "attachment; filename=" + resultFileName);// 设定输出文件头
	            resp.setContentType("application/msexcel");// 定义输出类型
	            //输入流：本地文件路径
	            in = new DataInputStream(
	                    new FileInputStream(new File(filename)));  
	            //输出流
	            out = resp.getOutputStream();
	            //输出文件
	            int bytes = 0;
	            byte[] bufferOut = new byte[1024];  
	            while ((bytes = in.read(bufferOut)) != -1) {  
	                out.write(bufferOut, 0, bytes);  
	            }
	        } catch(Exception e){
	            e.printStackTrace();
	            resp.reset();
	            try {
	                OutputStreamWriter writer = new OutputStreamWriter(resp.getOutputStream(), "UTF-8");  
	                String data = "<script language='javascript'>alert(\"\\u64cd\\u4f5c\\u5f02\\u5e38\\uff01\");</script>";
	                writer.write(data); 
	                writer.close();
	            } catch (IOException e1) {
	                e1.printStackTrace();
	            }
	        }finally {
	            if(null != in) {
	                try {
	                    in.close();
	                } catch (IOException e) {
	                    e.printStackTrace();
	                }
	            }
	            if(null != out) {
	                try {
	                    out.close();
	                } catch (IOException e) {
	                    e.printStackTrace();
	                }
	            }
	        }
	}