使用SpringMVC接收文件流上传和表单参数

目录

• 接收文件流上传和表单参数
• JAVA服务端代码
• HTML页面代码
• SpringMVC接收文件上传,并对文件做处理
• springmvc配置
• controller代码如下

接收文件流上传和表单参数

在SpringMVC中，接收文件流非常简单，我们可以写个接口用来接收一些文件，同时还可以接收表单参数。

代码参考如下：

JAVA服务端代码

/**
 * 接收文件流
 *
 * @param request 请求
 * @return OK
 */
@RequestMapping(value = "/receive/file", method = POST)
public String receiveFile(HttpServletRequest request) {
    // 转换为 MultipartHttpServletRequest
    if (request instanceof MultipartHttpServletRequest) {
        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
        // 通过表单中的参数名来接收文件流（可用 file.getInputStream() 来接收输入流）
        MultipartFile file = multipartRequest.getFile("file");
        System.out.println("上传的文件名称:" + file.getOriginalFilename());
        System.out.println("上传的文件大小:" + file.getSize());
        // 接收其他表单参数
        String name = multipartRequest.getParameter("name");
        String content = multipartRequest.getParameter("content");
        System.out.println("name:" + name);
        System.out.println("content:" + content);
        return "OK";
    } else {
        return "不是 MultipartHttpServletRequest";
    }
}

HTML页面代码

    
    
    
    提交请求

SpringMVC接收文件上传,并对文件做处理

• http client版本4.1.1
• spring版本3.2.11

在这个例子里面我接收了文件，并转发给另一个机器，其实接收的时候文件的流已经拿到了，想保存到本地，或者对文件分析，自己可以斟酌。

springmvc配置

    
    
    
    
    
    
    
        
            
                text/html;charset=UTF-8
            
        
    
    
    
    
        
            
                true
            
        
    
    
    
        
            
        
        
            
                
            
        
        
            
                
            
        
    
    
    
    
    
    
    
        
        
        
        
    
    
        
        
            
                0
                UTF-8
                zh_CN
                0.##########
                ignore
            
        
        
            
        
    
    

controller代码如下

@RequestMapping(value = "/uploadFile", method = RequestMethod.POST)
@ResponseBody
public String uploadFile(HttpServletRequest request) throws Exception {
    FileOutputStream fos = null;
    InputStream in = null;
    String fileUrl = null;
    try {
        //将当前上下文初始化给  CommonsMutipartResolver （多部分解析器）
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
        //检查form中是否有enctype="multipart/form-data"
        if (multipartResolver.isMultipart(request)) {
            //将request变成多部分request
            MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
            //获取multiRequest 中所有的文件名
            Iterator iterator = multiRequest.getFileNames();
            while (iterator.hasNext()) {
                MultipartFile multipartFile = multiRequest.getFile(iterator.next().toString());
                in = multipartFile.getInputStream();
                File file = new File(multipartFile.getOriginalFilename());
                fos = new FileOutputStream(file);
                byte[] buff = new byte[1024];
                int len = 0;
                while ((len = in.read(buff)) > 0) {
                    fos.write(buff, 0, len);
                }
                String uploadUrl = platformHttpsDomain + "/uploadFile";
                HttpPost post = new HttpPost(uploadUrl);
                HttpClient httpclient = new DefaultHttpClient();
                MultipartEntity reqEntity = new MultipartEntity();
                reqEntity.addPart("file", new FileBody(file));
                post.setEntity(reqEntity);
                HttpResponse response = httpclient.execute(post);
                int statusCode = response.getStatusLine().getStatusCode();
                if (statusCode == HttpStatus.SC_OK) {
                    fileUrl = EntityUtils.toString(response.getEntity());
                }
                file.deleteOnExit();
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (fos != null) {
            try {
                fos.close();
            } catch (IOException e) {
            }
        }
        if (in != null) {
            try {
                in.close();
            } catch (IOException e) {
            }
        }
    }
    return fileUrl;
}

以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。