文章目录
1.导入文件上传所需要的jar包
2. 配置文件解析器
3.写一个前端页面
4.写后台程序
1.导入文件上传所需要的jar包
<dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.1</version>
</dependency>
<dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.4</version>
</dependency>2. 配置文件解析器
<!--文件解析器--><bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" ><property name="maxInMemorySize" value="10485760"/></bean>3.写一个前端页面
<form action="/user/fileUpload" method="post"enctype="multipart/form-data">选择文件：<input type="file" name="upload"/><br><input type="submit" value="上传"/></form>4.写后台程序
@Controller
@RequestMapping("/user")
public class FileUploadController {@RequestMapping("/fileUpload")public String fileUpload(HttpServletRequest request, MultipartFile upload) throws Exception {System.out.println("文件上传");//使用fileUpload组件完成文件上传//上传的位置String realPath = request.getSession().getServletContext().getRealPath("/uploads/");System.out.println(realPath);//判断该路径是否存在File file = new File(realPath);if(!file.exists()){//创建该文件file.mkdirs();}//获取到上传文件的名称String fileName = upload.getOriginalFilename();//防止文件上传被覆盖，将文件名设置为唯一的String uuid= UUID.randomUUID().toString().replace("-","");fileName = uuid+"_"+fileName;//完成文件上传upload.transferTo(new File(realPath,fileName));return "success";}
}
