springmvc文件上传

首先我们导入pom依赖

  <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.3</version>
    </dependency>

我们在springmvc-servlet.xml里面添加一段处理多功能表单的视图解析器

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 必须和用户JSP 的pageEncoding属性一致，以便正确解析表单的内容 -->
        <property name="defaultEncoding" value="UTF-8"></property>
        <!-- 文件最大大小(字节) 1024*1024*50=50M-->
        <property name="maxUploadSize" value="52428800"></property>
        <!--resolveLazily属性启用是为了推迟文件解析，以便捕获文件大小异常-->
        <property name="resolveLazily" value="true"/>
    </bean>

 建一个jsp页面（file.jsp）

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2019/10/31 0031
  Time: 19:51
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>讲解springmvc文件上传页面</title>
</head>
<body>
<form action="/book/upload" method="post" enctype="multipart/form-data">
    请选择要上传的文件<input type="file" name="xxx">
    <input type="submit" value="ok">
</form>
</body>
</html>

 

 BookController

 /**
     * 文件上传
     * @param req
     * @return
     */
    @RequestMapping("/upload")
    public String upload(HttpServletRequest req, MultipartFile xxx){
        String fileName=xxx.getOriginalFilename();
        String contentType=xxx.getContentType();
        try {
            FileUtils.copyInputStreamToFile(xxx.getInputStream(),new File("E:/uplods/"+fileName));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return  "redirect:/book/list";
    }

　　

 

 

 

 

 

 

 

 

 

 文件成功上传

 

posted @ 2019-10-31 20:21  小蜜疯  阅读(155)  评论(0)    收藏  举报