Springmvc实现图片或者文件上传超级详细教程

青旅半醒 2024-04-17 19:56 66阅读 0赞

**0)导入文件上传的依赖**

<dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>1.3.3</version>
            </dependency>
    
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>2.4</version>
            </dependency>

**1）配置解析器  
打开springmvc.xml文件**  
大写的注意：id必须是：multipartResolver否则报错！一定要切记

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            
            <property name="maxUploadSize" value="10485760" />
        </bean>

2）**list.jsp页面**

<%--
      Created by IntelliJ IDEA.
      User: 14255
      Date: 2019/8/30
      Time: 9:30
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <h1>Springmvc文件上传</h1>
    </head>
    <body>
    <form action="fileUpload" method="post" enctype="multipart/form-data">
        名称： <input type="text" name="picname"/><br/>
        图片： <input type="file" name="upload"/><br/>
        <input type="submit" value="上传"/>
    </form>
    </body>
    </html>

3）**FileUploadController**

@RequestMapping("/fileUpload")
        public String fileuoload2(HttpServletRequest request, MultipartFile upload) throws Exception {
            System.out.println("springmvc文件上传...");
            // 使用fileupload组件完成文件上传
            // 上传的位置
            String path = request.getSession().getServletContext().getRealPath("/uploads/");
            // 判断，该路径是否存在
            File file = new File(path);
            if (!file.exists()) {
                // 创建该文件夹
                file.mkdirs();
            }
    
            // 说明上传文件项
            // 获取上传文件的名称
            System.out.println("11111111111111"+upload.getOriginalFilename());
            String filename = upload.getOriginalFilename();
            // 把文件的名称设置唯一值，uuid
            String uuid = UUID.randomUUID().toString().replace("-", "");
            filename = uuid + "_" + filename;
            // 完成文件上传
            upload.transferTo(new File(path, filename));
    
            return "index";
        }

4)效果图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h1emVjb20_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h1emVjb20_size_16_color_FFFFFF_t_70 1]  
**大功告成，哈哈**

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h1emVjb20_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/13dfc9f90ad64fd5a5d05075dfe2c6d4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h1emVjb20_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/ad016272e9454a54b0e1b09f0c1eb795.png