SpringMvc之文件上传-优快云博客

本文链接：https://blog.youkuaiyun.com/m0_60375302/article/details/122071327

1、导入相关pom依赖

2、配置文件上传解析器

3、新建jsp页面导入多功能表单

4、在BookController中增加方法

5、在IDEA中添加硬盘与tomcat网络请求的映射

6、运行结果

①、上传图片

②、访问上传的图片

1、导入相关pom依赖

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

2、配置文件上传解析器

springmvc.xml

 <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>

3、新建jsp页面导入多功能表单

<%--
  Created by IntelliJ IDEA.
  User: zjjt
  Date: 2021/12/21
  Time: 18:42
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/book/upload" method="post" enctype="multipart/form-data">
    <input type="file" name="xxx">
    <input type="submit" value="上传">
</form>
</body>
</html>

4、在BookController中增加方法

@RequestMapping("/upload")
    public String upload(HttpServletRequest request, MultipartFile xxx){
//     xxx代表了客户端上传文件对象
//     将xxx写入到xxx盘
        try {
            FileUtils.copyInputStreamToFile(xxx.getInputStream(),new File("G:/zzz/"+xxx.getOriginalFilename()));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "bookList";
    }