springMVC（六）——文件上传
SpringMVC文件的上传
直接来步骤和代码：
1、首先需要导入jar包
2、前端代码
加颜色的代码需要注意
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> </head> <body> <form action="upload" method="post" enctype="multipart/form-data"> 姓名:<input type="text" name="name"/><br> 年龄:<input type="text" name="age"/><br> 请选择上传文件:<input type="file" name="multipartFile"/> <input type="submit" value="上传"> </form> </body> </html>
3、在springmvc中配置文件上传解析器
<!-- 配置文件上传解析器 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!--设置文件上传的大小 字节 --> <property name="maxUploadSize" value="20971520"></property> </bean>
4、控制层处理代码
@Controller public class TestController { @RequestMapping("upload") //HttpServletRequest:作用是为了获取上传文件的路径 public String uploadFiles(MultipartFile multipartFile,HttpServletRequest request,Student stu,Model model) { //获取文件上传真实保存路径 String path = request.getServletContext().getRealPath("/upload"); System.out.println(path); //创建一个对象 File file = new File(path); if(!file.exists()) {//该路径不存在 file.mkdirs(); } //获取文件名 String filename =System.currentTimeMillis()+ multipartFile.getOriginalFilename(); System.out.println(filename); File targetfile = new File(path+"/"+filename); try { //把文件写到指定的目录下 FileUtils.writeByteArrayToFile(targetfile, multipartFile.getBytes()); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } stu.setImgname(filename); model.addAttribute("stu", stu); return "info"; } }
