1、环境搭建
一、新建项目
（1）在” main”目录下新建” java”与” resources”目录
（2）将” java”设置为”Sources Root”
（3）将” resources”设置为”Resources Root”
（4）在”java”目录下新建”StudyProject.Controller”包
（5）在”StudyProject.Controller”包下新建”TestController”类
（6）在”resources”目录下新建”Spring.xml”
（7）在”WEB-INF”目录下新建文件夹”Pages”
（8）在“Pages”目录下新建”success.jsp”
二、总体框架
三、TestController类和success.jsp
（1）TestController类
原代码html
1 package StudyProject.Controller; 2 3 public class TestController { 4 }
编写前端控制器及路径前端
修改后java
1 package StudyProject.Controller; 2 3 import org.springframework.stereotype.Controller; 4 import org.springframework.web.bind.annotation.RequestMapping; 5 6 @Controller 7 @RequestMapping(path="/testController") 8 public class TestController { 9 }
（2）success.jsp
原代码程序员
1 <%@ page contentType="text/html;charset=UTF-8" language="java" %> 2 <html> 3 <head> 4 <title>Title</title> 5 </head> 6 <body> 7 8 </body> 9 </html>
添加一个跳转成功提示web
修改后spring
1 <%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %> 2 <html> 3 <head> 4 <title>Title</title> 5 </head> 6 <body> 7 8 <h3>跳转成功</h3> 9 10 </body> 11 </html>
四、配置文件
（1）pom.xml
原代码apache
1 <properties> 2 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 3 <maven.compiler.source>1.7</maven.compiler.source> 4 <maven.compiler.target>1.7</maven.compiler.target> 5 </properties>
修改版本，而且加上spring.versionapi
修改后spring-mvc
1 <properties> 2 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 3 <maven.compiler.source>14.0.1</maven.compiler.source> 4 <maven.compiler.target>14.0.1</maven.compiler.target> 5 <spring.version>5.0.2.RELEASE</spring.version> 6 </properties>
原代码tomcat
1 <dependencies> 2 <dependency> 3 <groupId>junit</groupId> 4 <artifactId>junit</artifactId> 5 <version>4.11</version> 6 <scope>test</scope> 7 </dependency> 8 </dependencies>
在<dependencies></dependency>里加入坐标依赖，原有的能够删去
修改后
1 <!-- 导入坐标依赖 --> 2 <dependencies> 3 <dependency> 4 <groupId>org.springframework</groupId> 5 <artifactId>spring-context</artifactId> 6 <version>${spring.version}</version> 7 </dependency> 8 <dependency> 9 <groupId>org.springframework</groupId> 10 <artifactId>spring-web</artifactId> 11 <version>${spring.version}</version> 12 </dependency> 13 <dependency> 14 <groupId>org.springframework</groupId> 15 <artifactId>spring-webmvc</artifactId> 16 <version>${spring.version}</version> 17 </dependency> 18 <dependency> 19 <groupId>javax.servlet</groupId> 20 <artifactId>servlet-api</artifactId> 21 <version>2.5</version> 22 <scope>provided</scope> 23 </dependency> 24 <dependency> 25 <groupId>javax.servlet.jsp</groupId> 26 <artifactId>jsp-api</artifactId> 27 <version>2.0</version> 28 <scope>provided</scope> 29 </dependency> 30 </dependencies>
（2）web.xml
原代码
1 <!DOCTYPE web-app PUBLIC 2 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 3 "http://java.sun.com/dtd/web-app_2_3.dtd" > 4 5 <web-app> 6 <display-name>Archetype Created Web Application</display-name> 7 </web-app>
配置前段控制器与解决中文乱码的过滤器
修改后
1 <!DOCTYPE web-app PUBLIC 2 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 3 "http://java.sun.com/dtd/web-app_2_3.dtd" > 4 5 <web-app> 6 <display-name>Archetype Created Web Application</display-name> 7 8 <!--配置解决中文乱码的过滤器--> 9 <filter> 10 <filter-name>characterEncodingFilter</filter-name> 11 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 12 <init-param> 13 <param-name>encoding</param-name> 14 <param-value>UTF-8</param-value> 15 </init-param> 16 </filter> 17 <filter-mapping> 18 <filter-name>characterEncodingFilter</filter-name> 19 <url-pattern>/*</url-pattern> 20 </filter-mapping> 21 22 <!-- 配置前端控制器 --> 23 <servlet> 24 <servlet-name>dispatcherServlet</servlet-name> 25 <!-- 建立前端控制器DispatcherServlet对象 --> 26 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 27 <!-- 使前端控制器初始化时读取Spring.xml文件建立Spring核心容器 --> 28 <init-param> 29 <param-name>contextConfigLocation</param-name> 30 <param-value>classpath*:Spring.xml</param-value> 31 </init-param> 32 <!-- 设置该Servlet的优先级别为最高,使之最先建立（在应用启动时就加载并初始化这个servlet --> 33 <load-on-startup>1</load-on-startup> 34 </servlet> 35 <servlet-mapping> 36 <servlet-name>dispatcherServlet</servlet-name> 37 <url-pattern>/</url-pattern> 38 </servlet-mapping> 39 40 </web-app>
（3）Spring.xml
原代码
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> 5 6 </beans>
配置spring建立容器时扫描的包、视图解析器、开启spring注解支持等
修改后
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:mvc="http://www.springframework.org/schema/mvc" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 6 xsi:schemaLocation=" 7 http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans.xsd 9 http://www.springframework.org/schema/mvc 10 http://www.springframework.org/schema/mvc/spring-mvc.xsd 11 http://www.springframework.org/schema/context 12 http://www.springframework.org/schema/context/spring-context.xsd"> 13 14 <!-- 配置spring建立容器时扫描的包 --> 15 <context:component-scan base-package="StudyProject.Controller"></context:component-scan> 16 17 <!-- 配置视图解析器,用于解析项目跳转到的文件的位置 --> 18 <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 19 <!-- 寻找包的路径 --> 20 <property name="prefix" value="/WEB-INF/pages/"></property> 21 <!-- 寻找文件的后缀名 --> 22 <property name="suffix" value=".jsp"></property> 23 </bean> 24 25 <!-- 配置spring开启注解mvc的支持 --> 26 <mvc:annotation-driven></mvc:annotation-driven> 27 </beans>
五、Tomcat服务器（本地已建SpringMVC项目，Spring_MVC项目仅作示范）
点击”Add Configurations”配置Tomcat服务器
2、文件上传
一、传统方式上传文件
（1）TestController类
在控制器内部新增"testMethod_Traditional"方法
1 @Controller 2 @RequestMapping(path="/testController") 3 public class TestController { 4 5 @RequestMapping(path="/testMethod_Traditional") 6 public String testMethod_Traditional(HttpServletRequest request) throws Exception { 7 System.out.println("执行了testMethod_Traditional方法"); 8 9 //获取文件上传目录 10 String path = request.getSession().getServletContext().getRealPath("/uploads"); 11 //建立file对象 12 File file = new File(path); 13 //判断路径是否存在，若不存在，建立该路径 14 if (!file.exists()) { 15 file.mkdir(); 16 } 17 18 //建立磁盘文件项工厂 19 DiskFileItemFactory factory = new DiskFileItemFactory(); 20 ServletFileUpload fileUpload = new ServletFileUpload(factory); 21 //解析request对象 22 List<FileItem> list = fileUpload.parseRequest(request); 23 //遍历 24 for (FileItem fileItem:list) { 25 // 判断文件项是普通字段，仍是上传的文件 26 if (fileItem.isFormField()) { 27 //普通字段 28 } else { 29 //上传文件项 30 //获取上传文件项的名称 31 String filename = fileItem.getName(); 32 String uuid = UUID.randomUUID().toString().replaceAll("-","").toUpperCase(); 33 filename = uuid+"_"+filename; 34 //上传文件 35 fileItem.write(new File(file,filename)); 36 //删除临时文件 37 fileItem.delete(); 38 } 39 } 40 41 System.out.println("上传路径："+path); 42 System.out.println("上传成功"); 43 return "success"; 44 } 45 46 }
（2）index.jsp
添加form表单
1 <form action="testController/testMethod_Traditional" method="post" enctype="multipart/form-data"> 2 图片 <input type="file" name="uploadfile_Traditional"> <br> 3 <input type="submit" value="传统方式上传文件"> 4 </form>
（3）结果演示
点击服务器"SpringMVC"右侧的运行按钮
选择文件而后进行上传
点击上传按钮后，执行成功，跳到"success.jsp"界面显示跳转成功
在IDEA输出台查看文件路径
按照路径查看文件是否上传成功
二、SpringMVC方式上传文件
（1）pom.xml添加文件上传坐标依赖
在pom.xml文件<dependencies></dependencies>内添加文件上传坐标依赖
1 <!-- 文件上传 --> 2 <dependency> 3 <groupId>commons-fileupload</groupId> 4 <artifactId>commons-fileupload</artifactId> 5 <version>1.3.1</version> 6 </dependency> 7 <dependency> 8 <groupId>commons-io</groupId> 9 <artifactId>commons-io</artifactId> 10 <version>2.4</version> 11 </dependency>
（2）Spring.xml配置文件解析器对象
在Spring.xml文件<beans></beans>内配置文件解析器对象
1 <!-- 配置文件解析器对象 --> 2 <bean id="multipartResolver" 3 class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 4 <property name="defaultEncoding" value="utf-8"></property> 5 <property name="maxUploadSize" value="10485760"></property> 6 </bean>
（3）TestController类
在控制器内部新增"testMethod_SpringMVC"方法
1 @Controller 2 @RequestMapping(path="/testController") 3 public class TestController { 4 5 @RequestMapping(path="/testMethod_SpringMVC") 6 public String testMethod_SpringMVC(HttpServletRequest request,MultipartFile uploadfile_SpringMVC) throws Exception { 7 System.out.println("执行了testMethod_SpringMVC方法"); 8 9 //获取文件上传目录 10 String path = request.getSession().getServletContext().getRealPath("/uploads"); 11 //建立file对象 12 File file = new File(path); 13 //判断路径是否存在，若不存在，建立该路径 14 if (!file.exists()) { 15 file.mkdir(); 16 } 17 18 //获取到上传文件的名称 19 String filename = uploadfile_SpringMVC.getOriginalFilename(); 20 String uuid = UUID.randomUUID().toString().replaceAll("-","").toUpperCase(); 21 filename = uuid+"_"+filename; 22 //上传文件 23 uploadfile_SpringMVC.transferTo(new File(file,filename)); 24 25 System.out.println("上传路径："+path); 26 System.out.println("上传成功"); 27 return "success"; 28 } 29 30 }
（4）index.jsp
添加form表单
1 <form action="testController/testMethod_SpringMVC" method="post" enctype="multipart/form-data"> 2 图片 <input type="file" name="uploadfile_SpringMVC"> <br> 3 <input type="submit" value="SpringMVC上传文件"> 4 </form>
（5）结果演示
点击服务器"SpringMVC"右侧的运行按钮
选择文件而后进行上传
点击上传按钮后，执行成功，跳到"success.jsp"界面显示跳转成功
在IDEA输出台查看文件路径
按照路径查看文件是否上传成功
三、跨服务器上传文件
（1）新建”FileuploadServer”项目（过程再也不演示）
不须要创建”java””resources”等文件夹，只须要”index.jsp”显示界面便可
“index.jsp”代码
1 <html> 2 <body> 3 <h2>Hello! FileuploadServer</h2> 4 </body> 5 </html>
（2）配置服务器
点击”Edit Configurations”配置Tomcat服务器
为与”SpringMVC”服务器区分，修改”HTTP port”为”9090”，修改”JMX port”为”1090”
（3）pom.xml添加跨服务器文件上传坐标依赖
1 <!-- 跨服务器文件上传 --> 2 <dependency> 3 <groupId>com.sun.jersey</groupId> 4 <artifactId>jersey-core</artifactId> 5 <version>1.18.1</version> 6 </dependency> 7 <dependency> 8 <groupId>com.sun.jersey</groupId> 9 <artifactId>jersey-client</artifactId> 10 <version>1.18.1</version> 11 </dependency>
（4）TestController类
在控制器内部新增"testMethod_AcrossServer"方法
1 @Controller 2 @RequestMapping(path="/testController") 3 public class TestController { 4 5 @RequestMapping(path="/testMethod_AcrossServer") 6 public String testMethod_AcrossServer(MultipartFile uploadfile_AcrossServer) throws Exception { 7 System.out.println("执行了testMethod_AcrossServer方法"); 8 9 //定义上传文件服务器路径 10 String path = "http://localhost:9090/FileuploadServer_war_exploded/uploads/"; 11 12 //获取到上传文件的名称 13 String filename = uploadfile_AcrossServer.getOriginalFilename(); 14 String uuid = UUID.randomUUID().toString().replaceAll("-","").toUpperCase(); 15 filename = uuid+"_"+filename; 16 17 //建立客户端对象 18 Client client = Client.create(); 19 //链接图片服务器 20 WebResource webResourcer = client.resource(path+filename); 21 //向图片服务器上传文件 22 webResourcer.put(uploadfile_AcrossServer.getBytes()); 23 24 System.out.println("上传路径："+path); 25 System.out.println("上传成功"); 26 return "success"; 27 } 28 29 }
（5）index.jsp
添加form表单
1 <form action="testController/testMethod_AcrossServer" method="post" enctype="multipart/form-data"> 2 图片 <input type="file" name="uploadfile_AcrossServer"> <br> 3 <input type="submit" value="跨服务器上传文件"> 4 </form>
（6）结果演示
运行"FileuploadServer"服务器
运行"SpringMVC"服务器
在"FileuploadServer"项目的"target/FileuploadServer/"目录下新建文件夹"uploads"
选择文件并进行上传,上传成功跳转到"success.jsp"
查看IDEA输出信息
此时路径应为"FileuploadServer/target/FileuploadServer/uploads"，在路径下查看文件是否上传成功
3、注意事项
一、传统方式上传文件
传统方式上传时不须要在Spring.xml内配置文件解析器对象，使用该方法时须要注释掉该对象，不然会形成运行成功但上传文件为空。
1 <!-- 配置文件解析器对象 --> 2 <bean id="multipartResolver" 3 class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 4 <property name="defaultEncoding" value="utf-8"></property> 5 <property name="maxUploadSize" value="10485760"></property> 6 </bean>
即便用传统方式上传文件时，应当注释掉该段代码
二、跨服务器上传文件
（1）须要修改Tomcat服务器的web.xml配置文件的权限，增长能够写入的权限，不然会出现405的错误。如我所下载的Tomcat-9.0.36的web.xml路径为"apache-tomcat-9.0.36/conf/web.xml"
此时IEDA输出为
web.xml文件修改处原内容
应修改成
修改后的代码
1 <servlet> 2 <servlet-name>default</servlet-name> 3 <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class> 4 <init-param> 5 <param-name>debug</param-name> 6 <param-value>0</param-value> 7 </init-param> 8 <init-param> 9 <param-name>listings</param-name> 10 <param-value>false</param-value> 11 </init-param> 12 <init-param> 13 <param-name>readonly</param-name> 14 <param-value>false</param-value> 15 </init-param> 16 <load-on-startup>1</load-on-startup> 17 </servlet>
（2）在跨服务器上传文件时，须要在"FileuploadServer"项目的"target/FileuploadServer/"目录下新建文件夹"uploads"，不然会出现409的错误
4、完整代码
一、pom.xml(SpringMVC)
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 5 <modelVersion>4.0.0</modelVersion> 6 7 <groupId>org.example</groupId> 8 <artifactId>SpringMVC</artifactId> 9 <version>1.0-SNAPSHOT</version> 10 <packaging>war</packaging> 11 12 <name>SpringMVC Maven Webapp</name> 13 <!-- FIXME change it to the project's website --> 14 <url>http://www.example.com</url> 15 16 <properties> 17 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 18 <maven.compiler.source>14.0.1</maven.compiler.source> 19 <maven.compiler.target>14.0.1</maven.compiler.target> 20 <spring.version>5.0.2.RELEASE</spring.version> 21 </properties> 22 23 <!-- 导入坐标依赖 --> 24 <dependencies> 25 <dependency> 26 <groupId>org.springframework</groupId> 27 <artifactId>spring-context</artifactId> 28 <version>${spring.version}</version> 29 </dependency> 30 <dependency> 31 <groupId>org.springframework</groupId> 32 <artifactId>spring-web</artifactId> 33 <version>${spring.version}</version> 34 </dependency> 35 <dependency> 36 <groupId>org.springframework</groupId> 37 <artifactId>spring-webmvc</artifactId> 38 <version>${spring.version}</version> 39 </dependency> 40 <dependency> 41 <groupId>javax.servlet</groupId> 42 <artifactId>servlet-api</artifactId> 43 <version>2.5</version> 44 <scope>provided</scope> 45 </dependency> 46 <dependency> 47 <groupId>javax.servlet.jsp</groupId> 48 <artifactId>jsp-api</artifactId> 49 <version>2.0</version> 50 <scope>provided</scope> 51 </dependency> 52 53 <!-- 文件上传（采用传统方式上传时需注释掉该部分） --> 54 <dependency> 55 <groupId>commons-fileupload</groupId> 56 <artifactId>commons-fileupload</artifactId> 57 <version>1.3.1</version> 58 </dependency> 59 <dependency> 60 <groupId>commons-io</groupId> 61 <artifactId>commons-io</artifactId> 62 <version>2.4</version> 63 </dependency> 64 65 <!-- 跨服务器文件上传 --> 66 <dependency> 67 <groupId>com.sun.jersey</groupId> 68 <artifactId>jersey-core</artifactId> 69 <version>1.18.1</version> 70 </dependency> 71 <dependency> 72 <groupId>com.sun.jersey</groupId> 73 <artifactId>jersey-client</artifactId> 74 <version>1.18.1</version> 75 </dependency> 76 77 </dependencies> 78 79 <build> 80 <finalName>SpringMVC</finalName> 81 <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> 82 <plugins> 83 <plugin> 84 <artifactId>maven-clean-plugin</artifactId> 85 <version>3.1.0</version> 86 </plugin> 87 <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> 88 <plugin> 89 <artifactId>maven-resources-plugin</artifactId> 90 <version>3.0.2</version> 91 </plugin> 92 <plugin> 93 <artifactId>maven-compiler-plugin</artifactId> 94 <version>3.8.0</version> 95 </plugin> 96 <plugin> 97 <artifactId>maven-surefire-plugin</artifactId> 98 <version>2.22.1</version> 99 </plugin> 100 <plugin> 101 <artifactId>maven-war-plugin</artifactId> 102 <version>3.2.2</version> 103 </plugin> 104 <plugin> 105 <artifactId>maven-install-plugin</artifactId> 106 <version>2.5.2</version> 107 </plugin> 108 <plugin> 109 <artifactId>maven-deploy-plugin</artifactId> 110 <version>2.8.2</version> 111 </plugin> 112 </plugins> 113 </pluginManagement> 114 </build> 115 </project>
二、web.xml(SpringMVC)
1 <!DOCTYPE web-app PUBLIC 2 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 3 "http://java.sun.com/dtd/web-app_2_3.dtd" > 4 5 <web-app> 6 <display-name>Archetype Created Web Application</display-name> 7 8 <!--配置解决中文乱码的过滤器--> 9 <filter> 10 <filter-name>characterEncodingFilter</filter-name> 11 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 12 <init-param> 13 <param-name>encoding</param-name> 14 <param-value>UTF-8</param-value> 15 </init-param> 16 </filter> 17 <filter-mapping> 18 <filter-name>characterEncodingFilter</filter-name> 19 <url-pattern>/*</url-pattern> 20 </filter-mapping> 21 22 <!-- 配置前端控制器 --> 23 <servlet> 24 <servlet-name>dispatcherServlet</servlet-name> 25 <!-- 建立前端控制器DispatcherServlet对象 --> 26 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 27 <!-- 使前端控制器初始化时读取Spring.xml文件建立Spring核心容器 --> 28 <init-param> 29 <param-name>contextConfigLocation</param-name> 30 <param-value>classpath*:Spring.xml</param-value> 31 </init-param> 32 <!-- 设置该Servlet的优先级别为最高,使之最先建立（在应用启动时就加载并初始化这个servlet --> 33 <load-on-startup>1</load-on-startup> 34 </servlet> 35 <servlet-mapping> 36 <servlet-name>dispatcherServlet</servlet-name> 37 <url-pattern>/</url-pattern> 38 </servlet-mapping> 39 40 </web-app>
三、Spring.xml(SpringMVC)
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:mvc="http://www.springframework.org/schema/mvc" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 6 xsi:schemaLocation=" 7 http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans.xsd 9 http://www.springframework.org/schema/mvc 10 http://www.springframework.org/schema/mvc/spring-mvc.xsd 11 http://www.springframework.org/schema/context 12 http://www.springframework.org/schema/context/spring-context.xsd"> 13 14 <!-- 配置spring建立容器时扫描的包 --> 15 <context:component-scan base-package="StudyProject.Controller"></context:component-scan> 16 17 <!-- 配置视图解析器,用于解析项目跳转到的文件的位置 --> 18 <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 19 <!-- 寻找包的路径 --> 20 <property name="prefix" value="/WEB-INF/pages/"></property> 21 <!-- 寻找文件的后缀名 --> 22 <property name="suffix" value=".jsp"></property> 23 </bean> 24 25 <!-- 配置文件解析器对象 --> 26 <bean id="multipartResolver" 27 class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 28 <property name="defaultEncoding" value="utf-8"></property> 29 <property name="maxUploadSize" value="10485760"></property> 30 </bean> 31 32 <!-- 配置spring开启注解mvc的支持 --> 33 <mvc:annotation-driven></mvc:annotation-driven> 34 </beans>
四、TestController类(SpringMVC)
1 package StudyProject.Controller; 2 3 import com.sun.jersey.api.client.Client; 4 import com.sun.jersey.api.client.WebResource; 5 import org.apache.commons.fileupload.FileItem; 6 import org.apache.commons.fileupload.disk.DiskFileItemFactory; 7 import org.apache.commons.fileupload.servlet.ServletFileUpload; 8 import org.springframework.stereotype.Controller; 9 import org.springframework.web.bind.annotation.RequestMapping; 10 import org.springframework.web.multipart.MultipartFile; 11 import javax.servlet.http.HttpServletRequest; 12 import java.io.File; 13 import java.util.List; 14 import java.util.UUID; 15 16 @Controller 17 @RequestMapping(path="/testController") 18 public class TestController { 19 20 @RequestMapping(path="/testMethod_Traditional") 21 public String testMethod_Traditional(HttpServletRequest request) throws Exception { 22 System.out.println("执行了testMethod_Traditional方法"); 23 24 //获取文件上传目录 25 String path = request.getSession().getServletContext().getRealPath("/uploads"); 26 //建立file对象 27 File file = new File(path); 28 //判断路径是否存在，若不存在，建立该路径 29 if (!file.exists()) { 30 file.mkdir(); 31 } 32 33 //建立磁盘文件项工厂 34 DiskFileItemFactory factory = new DiskFileItemFactory(); 35 ServletFileUpload fileUpload = new ServletFileUpload(factory); 36 //解析request对象 37 List<FileItem> list = fileUpload.parseRequest(request); 38 //遍历 39 for (FileItem fileItem:list) { 40 // 判断文件项是普通字段，仍是上传的文件 41 if (fileItem.isFormField()) { 42 //普通字段 43 } else { 44 //上传文件项 45 //获取上传文件项的名称 46 String filename = fileItem.getName(); 47 String uuid = UUID.randomUUID().toString().replaceAll("-","").toUpperCase(); 48 filename = uuid+"_"+filename; 49 //上传文件 50 fileItem.write(new File(file,filename)); 51 //删除临时文件 52 fileItem.delete(); 53 } 54 } 55 56 System.out.println("上传路径："+path); 57 System.out.println("上传成功"); 58 return "success"; 59 } 60 61 @RequestMapping(path="/testMethod_SpringMVC") 62 public String testMethod_SpringMVC(HttpServletRequest request,MultipartFile uploadfile_SpringMVC) throws Exception { 63 System.out.println("执行了testMethod_SpringMVC方法"); 64 65 //获取文件上传目录 66 String path = request.getSession().getServletContext().getRealPath("/uploads"); 67 //建立file对象 68 File file = new File(path); 69 //判断路径是否存在，若不存在，建立该路径 70 if (!file.exists()) { 71 file.mkdir(); 72 } 73 74 //获取到上传文件的名称 75 String filename = uploadfile_SpringMVC.getOriginalFilename(); 76 String uuid = UUID.randomUUID().toString().replaceAll("-","").toUpperCase(); 77 filename = uuid+"_"+filename; 78 //上传文件 79 uploadfile_SpringMVC.transferTo(new File(file,filename)); 80 81 System.out.println("上传路径："+path); 82 System.out.println("上传成功"); 83 return "success"; 84 } 85 86 @RequestMapping(path="/testMethod_AcrossServer") 87 public String testMethod_AcrossServer(MultipartFile uploadfile_AcrossServer) throws Exception { 88 System.out.println("执行了testMethod_AcrossServer方法"); 89 90 //定义上传文件服务器路径 91 String path = "http://localhost:9090/FileuploadServer_war_exploded/uploads/"; 92 93 //获取到上传文件的名称 94 String filename = uploadfile_AcrossServer.getOriginalFilename(); 95 String uuid = UUID.randomUUID().toString().replaceAll("-","").toUpperCase(); 96 filename = uuid+"_"+filename; 97 98 //建立客户端对象 99 Client client = Client.create(); 100 //链接图片服务器 101 WebResource webResourcer = client.resource(path+filename); 102 //向图片服务器上传文件 103 webResourcer.put(uploadfile_AcrossServer.getBytes()); 104 105 System.out.println("上传路径："+path); 106 System.out.println("上传成功"); 107 return "success"; 108 } 109 110 }
五、index.jsp(SpringMVC)
1 <%@ page contentType="text/html;charset=UTF-8" language="java" %> 2 <html> 3 <head> 4 <title>Title</title> 5 </head> 6 <body> 7 8 <form action="testController/testMethod_Traditional" method="post" enctype="multipart/form-data"> 9 图片 <input type="file" name="uploadfile_Traditional"> <br> 10 <input type="submit" value="传统方式上传文件"> 11 </form> 12 13 <br><br><br> 14 15 <form action="testController/testMethod_SpringMVC" method="post" enctype="multipart/form-data"> 16 图片 <input type="file" name="uploadfile_SpringMVC"> <br> 17 <input type="submit" value="SpringMVC上传文件"> 18 </form> 19 20 <br><br><br> 21 22 <form action="testController/testMethod_AcrossServer" method="post" enctype="multipart/form-data"> 23 图片 <input type="file" name="uploadfile_AcrossServer"> <br> 24 <input type="submit" value="跨服务器上传文件"> 25 </form> 26 27 </body> 28 </html>
六、success.jsp（SpringMVC）
1 <%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %> 2 <html> 3 <head> 4 <title>Title</title> 5 </head> 6 <body> 7 8 <h3>跳转成功</h3> 9 10 </body> 11 </html>
七、index.jsp（FileuploadServer）
1 <html> 2 <body> 3 <h2>Hello! FileuploadServer</h2> 4 </body> 5 </html>
学习资料来源：黑马程序员