文件上传
单文件上传
upload.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@page isELIgnored="false" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<form action="/upload" method="post" enctype="multipart/form-data">
file: <input type="file" name="img"><br>
<input type="submit" value="提交">
</form>
<img src="${path}">
</body>
</html>
后端
@RequestMapping("/upload")
public String upload(MultipartFile img, HttpServletRequest request) {
String filePath = request.getServletContext().getRealPath("file");
File mkdir = new File(filePath);
if(!mkdir.exists()) // 这是为了创建文件夹
mkdir.mkdir();
String filename = img.getOriginalFilename();
File file = new File(filePath,filename);
try {
img.transferTo(file);
// request.setAttribute("path","/file/"+filename); 存下图片的访问路径
request.setAttribute("path","/file/"+filename);
} catch (IOException e) {
e.printStackTrace();
}
return "upload";
}
选取文件提交后
注意事项
得导入对应的jar包
<!-- 文件上传组件 -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.8.0</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
<!-- servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- jstl -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>