【SpringMVC】文件上传

最新推荐文章于 2018-10-17 09:06:20 发布

evan_qb

最新推荐文章于 2018-10-17 09:06:20 发布

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分类专栏： Java学习 # SpringMVC

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文件上传

首先手写一个file-upload.jsp上传表单

<%@ 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="${pageContext.request.contextPath }/fileupload" enctype="multipart/form-data">
		资源名称：<input type="text" name="name" /> <br>
		上传文件：<input type="file" name="file" /> <br>
		<input type="submit" value="上传"/>
	</form>
</body>
</html>

然后书写对于的FileController类

package springmvc.controller;

import java.io.File;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;

@Controller
@RequestMapping("/fileupload")
public class FileController {
	@RequestMapping(method = RequestMethod.GET)
	public String getPage(){
		return "file-upload";
	}
	
	@RequestMapping(method = RequestMethod.POST)
	public String upload(@RequestParam String name,
			@RequestParam MultipartFile file) throws Exception{
		System.out.println("文件资源:" + name);
		System.out.println("文件:" + file);
		if(!file.isEmpty()){
			file.transferTo(new File("D:/upload", file.getOriginalFilename()));
		}
		return "index";
	}
}

对应的在xml中或者AppConfig类中进行配置

/**
 * 配置文件上传的bean:设置文件大小
 * @return
 */
@Bean
public MultipartResolver multipartResolver(){	// 注意：方法名必须这么写，作为bean名字
	CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
	multipartResolver.setMaxInMemorySize(30*1024*1024);
	return multipartResolver;
}

这样就完成配置