springmvc跨服务器文件上传(jersey-client-1.18.1.jar jersey-core-1.18.1.jar)

本文链接：https://blog.youkuaiyun.com/qq_26514509/article/details/86765146

这篇博客详细介绍了如何实现SpringMVC跨服务器文件上传的功能。通过配置FileUploadController3，调整springmvc.xml和web.xml，以及使用额外的Tomcat实例（运行在9090端口）来保存上传的文件到/day02_springmvc5_02image路径下。用户可以通过success.jsp和index.jsp进行测试交互。

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package com.itheima.web.controller;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;



/**
 * springmvc提供的文件上传操作
 * 
 * @return
 * @throws Exception
 */
@Controller("fileUploadController3")
@RequestMapping("/springmvc")
public class FileUploadController3 {
	
	
	//定义一个变量用于指定图片服务器的地址,在实际的开发中,可以写到配置文件中
	private static final String IMAGESERVERPATH = "http://localhost:9090/day02_springmvc5_02image/uploads/";
	/**
	 * 跨服务器的文件上传
	 * @param imageName
	 * @param uploadFile
	 * @param request
	 * @return
	 * @throws Exception
	 */
	@RequestMapping("/testFileUpload3")
	public String testFileUpload2(String imageName, MultipartFile uploadFile, HttpServletRequest request)
			throws Exception {
		System.out.println("文件上传的方法执行了");
				
		//1.获取文件名
		String fileName = uploadFile.getOriginalFilename();
		
		//2.随机化文件名
		String uuid = UUID.randomUUID().toString().replace("-", "").toUpperCase();
		fileName = uuid + "_" + fileName;
		
		//3.获取jersey的jar包中提供Client对象
		Client client = Client.create();
			
		//4.建立和图片服务器的联系
		WebResource resource = client.resource(IMAGESERVERPATH + fileName);
		
		//5.把文件写到域
		String result = resource.put(String.class, uploadFile.getBytes());
		System.out.println(result);
		return "success";
	}
}

FileUploadController3跨服务器上传文件类

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" 
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
		http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/mvc
		http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context.xsd
		http://www.springframework.org/schema/aop
		http://www.springframework.org/schema/aop/spring-aop.xsd
		http://www.springframework.org/schema/tx
		http://www.springframework.org/schema/tx/spring-tx.xsd">
		<!-- 告知spring创建容器时要扫描的包 -->
		<context:component-scan base-package="com.itheima"></context:component-scan>
		
		<!-- 配置springmvc的视图解析器,用于找到响应的jsp -->
		<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
			<property name="prefix" value="/WEB-INF/pages/"></property>
			<property name="suffix" value=".jsp"></property>
		</bean>
		
		<!-- 配置springmvc提供的文件解析器 -->
		<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
			<!-- 设置上传文件的最大尺寸为5MB -->
			<property name="maxUploadSize">
				<value>5242880</value>
			</property>
		</bean>
		
		<!-- 开启springmvc的注解  -->
		<mvc:annotation-driven></mvc:annotation-driven>
		
		<!-- 设置静态资源不参与springmvc编码的过滤 -->
		<mvc:resources location="/css/" mapping="/css/**"/>
		<mvc:resources location="/images/" mapping="/images/**"/>
		<mvc:resources location="/scripts/" mapping="/javascripts/**"/>
</beans>

springmvc.xml配置文件

<%@ 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>成功页面</title>
</head>
<body>
执行成功
</body>
</html>

success.jsp测试页面

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<display-name>day02_springmvc5_01response</display-name>


	<!-- 配置springmvc核心控制器 -->
	<servlet>
		<servlet-name>dispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

		<!-- 加载springmvc配置文件 -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:springmvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	
	<!-- 请求过滤器,把请求交给springmvc处理 -->
	<servlet-mapping>
		<servlet-name>dispatcherServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	
	<!-- 配置springmvc提供的编码过滤器 -->
	<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>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

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

web.xml配置文件

<%@ 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>springmvc文件上传</title>
</head>
<body>
	
	<!-- 跨服务器文件上传表单 -->
	<form action="springmvc/testFileUpload3" method="post" enctype="multipart/form-data">
		图片名称:<input type="text" name="imageName"/><br/>
		图片:<input type="file" name="uploadFile"/><br/>
		<input type="submit" value="上传">
	</form>
</body>
</html>

index.jsp测试页面

除了原本的tomcat负责接受上传文件请求

还要再另外配置一个tomcat,用于保存上传的文件,该tomcat端口改为9090,/WEB-INF/page/uoploads,和新建一个工程项目day02_springmvc5_02image