Spring MVC文件上传

最新推荐文章于 2024-10-22 13:28:23 发布

原创最新推荐文章于 2024-10-22 13:28:23 发布 · 316 阅读

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1.项目结构

2.导入相关jar包

3.配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">


<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>


<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

4.在src下建（com.hk.uploadcontroller包和（FileUploadController.java）类，springmvc.xml配置

package com.hk.uploadcontroller;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
@Controller
public class FileUploadController {
/**
* fileupload
* @param file
* @param request
* @return
* @throws IOException
*/
@RequestMapping(value = "/upload")
public String fileupload(@RequestParam("file") CommonsMultipartFile file,HttpServletRequest request) throws IOException{
try {
System.out.println("文件上传中。。。。");
// 获取文件上传路径
String path = request.getRealPath("/fileupload");
//读取文件
InputStream is = file.getInputStream();
OutputStream os = new FileOutputStream(new File(path,file.getOriginalFilename()));
int len = 0;
byte[] buffer = new byte[400];
while ((len=is.read())!=(-1)) {
os.write(buffer,0,len);
}
os.flush();
os.close();
is.close();
System.out.println("文件上传成功！");
} catch (Exception e) {
System.err.print("上传文件异常！");
}
return "index.jsp";
}
}

<?xml version="1.0" encoding="UTF-8"?>

5.页面index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>文件上传</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
</head>
<body>
<form action="upload.do" method="post" enctype="multipart/form-data">
file:<input type="file" name="file"/><input type="submit" value="文件上传"/>
</form>
</body>
</html>

6.输入地址上传文件