使用SpringMVC接收文件流上传和表单参数

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4.1.1spring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

xmlns:context="http://springframework.org/schema/context"

xmlns:mvc="http://springframework.org/schema/mvc"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc.xsd">

<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">

text/html;charset=UTF-8

true

ehodr

0

UTF-8

zh_CN

0.##########

ignore

xmlns:context="http://springframework.org/schema/context"

xmlns:mvc="http://springframework.org/schema/mvc"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc.xsd">

<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">

text/html;charset=UTF-8

true

ehodr

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());

ehodr 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;

}

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