SpringMVC之文件上传
一、环境搭建
1、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”
2、整体框架
3、TestController类和success.jsp
（1）TestController类
原代码
1 package StudyProject.Controller;
2
3 public class TestController {
4 }
编写前端控制器及路径
修改后
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
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
修改后
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>
4、配置文件
（1）pom.xml
原代码
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，并且加上spring.version
修改后
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
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，原有的可以删去
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 <!-- 创建前端控制器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文件创建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,使之最早创建（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创建容器时扫描的包、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创建容器时扫描的包 --> 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>
5、Tomcat服务器（本地已建SpringMVC项目，Spring_MVC项目仅做示范）
点击”Add Configurations”配置Tomcat服务器
二、文件上传
1、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 //创建file对象
12 File file = new File(path);
13 //判断路径是否存在，若不存在，创建该路径
14 if (!file.exists()) {
15 file.mkdir();
16 }
17
18 //创建磁盘文件项工厂
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，还是上传的文件
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
选择文件然后进行上传
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
2、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 //创建file对象
12 File file = new File(path);
13 //判断路径是否存在，若不存在，创建该路径
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
选择文件然后进行上传
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
3、跨服务器上传文件
（1）新建”FileuploadServer”项目（过程不再演示）
不需要建立”java””resources”等文件夹，只需要”index.jsp”显示界面即可
“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 //创建客户端对象
18 Client client = Client.create();
19 //连接图片服务器
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
三、注意事项
1、传统方式上传文件
传统方式上传时不需要在Spring.xml内配置文件解析器对象 ， 使用该方法时需要注释掉该对象，否则会造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>
即使用传统方式上传文件时，应当注释掉该段代码
2、跨服务器上传文件
（1） 需要修改Tomcat服务器的web.xml配置文件的权限， 增加可以写入的权限，否则会出现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
应修改为
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， 需要在"FileuploadServer"项目的"target/FileuploadServer/"目录下新建文件夹"uploads"，否则会出现409的错误
四、完整代码
1、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>
2、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 <!-- 创建前端控制器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文件创建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,使之最早创建（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(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创建容器时扫描的包 --> 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>
4、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 //创建file对象
27 File file = new File(path);
28 //判断路径是否存在，若不存在，创建该路径
29 if (!file.exists()) {
30 file.mkdir();
31 }
32
33 //创建磁盘文件项工厂
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，还是上传的文件
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 //创建file对象
68 File file = new File(path);
69 //判断路径是否存在，若不存在，创建该路径
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 //创建客户端对象
99 Client client = Client.create();
100 //连接图片服务器
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 }
5、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>
6、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>
7、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
正文到此结束
- 本文标签： 代码 parse final 删除 图片 classpath js API 遍历 dependencies http plugin rand 服务器 https IDE 解析 文件上传 core ORM junit root ip HTML SpringMVC src bean session web tomcat UI 程序员 list client Action 乱码 apache servlet 配置 App value build Property bug java map CTO XML example 下载 id spring pom cat 注释 DOM schema ACE IO 目录 maven tar
- 版权声明： 本文为互联网转载文章，出处已在文章中说明(部分除外)。如果侵权，请联系本站长删除，谢谢。
- 本文海报： 生成海报一 生成海报二
热门推荐
相关文章
近期评论
-
文章和留言都翻到11页了 没有OOM
-
-
朋友，翻页到11页，及以后，会出现OOM，无法访问
-
-
搞个gitee的项目
-
-
版本号是多少，你可以下载哪个代码仓库，jdk选1.8 直接跑就行
-
-
-
Loading...
![[HBLOG]公众号](https://www.liuhaihua.cn/img/qrcode_gzh.jpg)
