springmvc文件上传

最新推荐文章于 2025-06-19 20:58:13 发布

最新推荐文章于 2025-06-19 20:58:13 发布 · 100 阅读

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#sringmvc文件上传

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本文详细介绍了如何将Java Web应用与Spring MVC框架整合，包括配置启动Spring IOC容器、设置自动扫描的包、配置视图解析器、上传文件的设置以及处理静态页面加载等问题。

关联jar包：

<!-- apache commons jar -->
<dependency>
	<groupId>commons-io</groupId>
	<artifactId>commons-io</artifactId>
	<version>${commons-io-version}</version>
</dependency>
<dependency>
	<groupId>commons-fileupload</groupId>
	<artifactId>commons-fileupload</artifactId>
	<version>${commons-fileupload-version}</version>
</dependency>
<dependency>
	<groupId>org.apache.commons</groupId>
	<artifactId>commons-lang3</artifactId>
	<version>${org.apache.commons-version}</version>
</dependency>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
	id="WebApp_ID" version="3.1">

	<!-- 配置启动 Spring IOC 容器的 Listener -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>


	<!-- 配置字符编码 -->
	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<!-- 配置 HiddenHttpMethodFilter: 把 POST 请求转为 DELETE、PUT 请求 -->
	<filter>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- 配置 DispatcherServlet -->
	<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>/</url-pattern>
	</servlet-mapping>

	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>

</web-app>

<!-- 设置自动扫描的包 -->
<context:component-scan base-package="com.dongly.bookstores"
	use-default-filters="false">
	<context:include-filter type="annotation"
		expression="org.springframework.stereotype.Controller" />
	<context:include-filter type="annotation"
		expression="org.springframework.web.bind.annotation.ControllerAdvice" />
</context:component-scan>

<!-- 配置视图解析器 -->
<bean
	class="org.springframework.web.servlet.view.InternalResourceViewResolver">
	<property name="prefix" value="/WEB-INF/views/"></property>
	<property name="suffix" value=".jsp"></property>
</bean>

<!-- 上传文件的设置 ，maxUploadSize=-1，表示无穷大。uploadTempDir为上传的临时目录 -->
<!-- 在这个bean中的id一定要叫multipartResolver，不然会报错，在在文件上传的时候还需要两个jar文件
	   com.springsource.org.apache.commons.fileupload-1.2.0.jar 
　　　              com.springsource.org.apache.commons.io-1.4.0.jar　 -->
<bean id="multipartResolver"
	class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
	<!-- 配置文件的编码方式 -->
	<property name="defaultEncoding" value="UTF-8"></property>
	<!-- 配置文件最大值  5m-->
	<property name="maxUploadSize" value="5400000"></property>
	<!-- 最大内存大小 (默认 10240)-->  
	<property name="maxInMemorySize" value="10240"></property>
	<!-- 配置临时目录 -->
	<property name="uploadTempDir" value="fileUpload/temp"></property>
</bean>

<!-- default-servlet-handler 将在 SpringMVC 上下文中定义一个 DefaultServletHttpRequestHandler, 
	它会对进入 DispatcherServlet 的请求进行筛查, 如果发现是没有经过映射的请求, 就将该请求交由 WEB 应用服务器默认的 Servlet 
	处理. 如果不是静态资源的请求，才由 DispatcherServlet 继续处理 一般 WEB 应用服务器默认的 Servlet 的名称都是 default. 
	若所使用的 WEB 服务器的默认 Servlet 名称不是 default，则需要通过 default-servlet-name 属性显式指定 -->
<mvc:default-servlet-handler />
<!-- 解决静态页面加载问题 -->
<mvc:annotation-driven></mvc:annotation-driven>

<!-- 可以使用 path 直接导航到 /WEB-INF/views/view-name.jsp 页面 -->
<mvc:view-controller path="/file1" view-name="/singleUploadFile"/>

package com.dongly.bookstores.Controller;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;

@Controller
public class FileUploadController {

	private Logger logger = LoggerFactory.getLogger(FileUploadController.class);

	@RequestMapping("/singleUploadFile")
	public String singleUploadFile(HttpServletRequest request, HttpServletResponse response) {
		// 创建一个通用的多部分解析器
		CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver(request.getServletContext());
		 //判断 request 是否有文件上传,即多部分请求 
		if (commonsMultipartResolver.isMultipart(request)) {
			// 转换成多部分request
			MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest) (request);
			// 取得request中的所有文件名
			Iterator<String> fileNames = multipartHttpServletRequest.getFileNames();
			while (fileNames.hasNext()) {
				// 取得上传文件
				MultipartFile file = multipartHttpServletRequest.getFile(fileNames.next());
				if (file != null) {
					// 取得当前上传文件的文件名称
					String fileName = file.getOriginalFilename();
					// 如果名称不为“”,说明该文件存在，否则说明该文件不存在
					if (fileName.trim() != "") {
						// 重命名上传后的文件名
						String newFileName = System.currentTimeMillis() + fileName;
						String realPath = request.getServletContext().getRealPath("/upload");
						// 定义上传路径
						String newPath = realPath + File.separator + newFileName;
						File path = new File(newPath);
						if (!path.exists()) {
							path.mkdirs();
						}
						String fileUrl = newPath.replaceAll("\\\\", "/").substring(newPath.indexOf("upload"));
						try {
							file.transferTo(path);
							logger.info("fileUrl ===>>>" + fileUrl);
							request.setAttribute("fileUrl", fileUrl);  
						} catch (IllegalStateException | IOException e) {
							e.printStackTrace();
						}
					}

				}
			}
		}
		return "fileUpload2";
	}

	@RequestMapping("/batchUploadFile")
	public String batchUploadFile(@RequestParam("file") CommonsMultipartFile files[],  
	        HttpServletRequest request, Map<String,Object> model){
		
		 List<String> filePaths = new ArrayList<String>(); 
		 for (int i = 0; i < files.length; i++) {
			 if(files[i] != null){
				 // 上传位置
				 String realPath = request.getServletContext().getRealPath("/img");
				 File path = new File(realPath);
				 if (!path.exists()) {
					 path.mkdirs();
				 }
				 //获得原始文件
				 String fileName = files[i].getOriginalFilename();  
				 logger.info("原始文件 == > " + fileName);
				 if (fileName.trim() != "") {
					 String newFileName = System.currentTimeMillis() + fileName;
					String newPath = path + File.separator + newFileName;
					String fileUrl = newPath.replaceAll("\\\\", "/").substring(newPath.indexOf("img"));
					try {
						files[i].transferTo(new File(newPath));
						filePaths.add(fileUrl);
					} catch (IllegalStateException | IOException e) {
						e.printStackTrace();
					}
				 }
			 }
		}
		model.put("fileList", filePaths);
		return "batchUploadFile";
	}

}

<%@ 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>Insert title here</title>
</head>
<body>

	<center>  
        <form action="singleUploadFile"  
            method="post" enctype="multipart/form-data">  
            <input type="file" name="file" />   
            <input type="submit" value="上 传" />  
        </form>  
        <h5>上传结果：</h5>  
        <img alt="暂无图片" src="${fileUrl}" />  
        <a href="${fileUrl}">下载图片</a>
    </center> 

</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>    
<!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>Insert title here</title>
</head>
<body>

	<center>  
        <form action="batchUploadFile"  
            method="post" enctype="multipart/form-data">  
            <input type="file" name="file" />  <br> 
            <input type="file" name="file" />   <br> 
            <input type="file" name="file" />   <br> 
            <input type="submit" value="上 传" />  
        </form>  
        <h5>上传结果：</h5> 
        <c:forEach items="${fileList }" var="fileName">
	        <img alt="暂无图片" src="${fileName}" />  
    	    <a href="${fileName}">下载图片</a>
        </c:forEach> 
    </center> 

</body>
</html>