springMVC之文件上传

最新推荐文章于 2024-10-18 15:50:03 发布

Ethan_Fu

最新推荐文章于 2024-10-18 15:50:03 发布

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本文介绍如何在SpringMVC框架中实现多文件上传功能，包括所需Jar包的引入、配置文件设置、控制器方法编写及JSP页面设计。

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来自：http://blog.youkuaiyun.com/zdp072/article/details/38693003

1. 引入Jar包

commons-fileupload-1.2.2.jar

commons-io-2.1.jar

2.user-servlet.xml中配置文件上传

[html] view plain copy print ?

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="5000000"></property>
</bean>

<!-- 配置文件上传 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
	<property name="maxUploadSize" value="5000000"></property>
</bean>

3. UserController.java

[java] view plain copy print ?

@Controller
@RequestMapping("/user")
public class UserController {
// 使用map模拟数据库
private Map<String, User> userMap = new HashMap<String, User>();
public UserController() {
userMap.put("zhangsan", new User("zhangsan", "123"));
userMap.put("lishimin", new User("lishimin", "456"));
}
// 文件上传
// 访问方法: http://localhost/springmvc_user/upload.jsp
@RequestMapping(value="/upload",method=RequestMethod.POST)
public String upload(@RequestParam("attachs")MultipartFile[] attachs,HttpServletRequest req) throws IOException {
String realpath = req.getSession().getServletContext().getRealPath("/resources/upload");
System.out.println(realpath);
for(MultipartFile attach:attachs) {
if(attach.isEmpty()){
continue;
}
File file = new File(realpath + "/" + attach.getOriginalFilename());
FileUtils.copyInputStreamToFile(attach.getInputStream(),file);
}
return "success";
}
}

@Controller
@RequestMapping("/user")
public class UserController {
	// 使用map模拟数据库 
	private Map<String, User> userMap = new HashMap<String, User>();

	public UserController() {
		userMap.put("zhangsan", new User("zhangsan", "123"));
		userMap.put("lishimin", new User("lishimin", "456"));
	}
	
	// 文件上传
	// 访问方法: http://localhost/springmvc_user/upload.jsp
	@RequestMapping(value="/upload",method=RequestMethod.POST)
	public String upload(@RequestParam("attachs")MultipartFile[] attachs,HttpServletRequest req) throws IOException {
		String realpath = req.getSession().getServletContext().getRealPath("/resources/upload");
		System.out.println(realpath);
		for(MultipartFile attach:attachs) {
			if(attach.isEmpty()){
				continue;
			}
			File file = new File(realpath + "/" + attach.getOriginalFilename()); 
			FileUtils.copyInputStreamToFile(attach.getInputStream(),file);
		}
		return "success";
	}
	
}

4. upload.jsp

[html] view plain copy print ?

<%@ 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>文件上传</title>
</head>
<body>
<form method="post" action="user/upload" enctype="multipart/form-data">
Attach:<br/>
<input type="file" name="attachs"/><br/>
<input type="file" name="attachs"/><br/>
<input type="file" name="attachs"/><br/>
<input type="submit" value="上传文件"/>
</form>
</body>
</html>

<%@ 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>文件上传</title>
</head>
<body>
<form method="post" action="user/upload" enctype="multipart/form-data">
	Attach:<br/>
    <input type="file" name="attachs"/><br/>	
    <input type="file" name="attachs"/><br/>	
    <input type="file" name="attachs"/><br/>	
    <input type="submit" value="上传文件"/>
</form>
</body>
</html>