SSM网页上传文件

素颜马尾好姑娘i 2024-02-19 15:50 43阅读 0赞

效果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RHSDI0MzAyODQ4MTc_size_16_color_FFFFFF_t_70][]

需要的资源：

commons-fileupload-1.3.1.jar，commons-io-1.3.2.jar

步骤：

1：搭建SSM框架：

2：在配置文件springconfig.xml中添加配置

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            
            <property name="defaultEncoding" value="UTF-8" />
            
            <property name="maxUploadSize" value="5242880" />
            <property name="maxInMemorySize" value="4096" />
        </bean>

3：编写上传jsp文件：upload.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>上传文件</title>
    </head>
    <body>
    <h1>文件上传实例</h1>
    <form enctype="multipart/form-data" method="post" action="${pageContext.request.contextPath}/upload.action" >
        <a>选择一个文件:</a>
        <input type="file" name="file" /><br/>
        <input type="submit" value="上传" />
    </form>
    </body>
    </html>

4：编辑控制器

/**
         * 文件上传功能
         * @param file
         * @return
         * @throws IOException 
         */
        @RequestMapping(value="/upload",method=RequestMethod.POST)
        @ResponseBody
        public String upload(MultipartFile file,HttpServletRequest request) throws IOException{
        	String fileMsg = UploadFileMsg(request);
        	System.out.println("fileMsg:"+fileMsg);
            String path = request.getSession().getServletContext().getRealPath("upload");//目录
            String fileName = file.getOriginalFilename();//文件名
            System.out.println("path:"+path);
            System.out.println("fileName:"+fileName);
            File dir = new File(path,fileName);        
            if(!dir.exists()){//如果目录不存在，则创建
                dir.mkdirs();
            }
            //MultipartFile自带的解析方法
            file.transferTo(dir);//下载文件
        	System.out.println("ok");
            return "success";
        }

5：运行，成功的话页面信息如下，且对应目录下有文件信息

![20190114000744937.png][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RHSDI0MzAyODQ4MTc_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/082e15dcf4bb4b9f94ab189e651253d6.png
[20190114000744937.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/5a394ea2b4ec4eb78fef863169c29d0e.png