pojo
User.java
package pojo; public class User { private String name; private String birthday; public User(){} public User(String name, String birthday) { this.name = name; this.birthday = birthday; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getBirthday() { return birthday; } public void setBirthday(String birthday) { this.birthday = birthday; } }
service
DisplayService.java
package service; import org.springframework.stereotype.Service; import pojo.User; @Service("displayService") public interface DisplayService { public String getHelloWorld(); public int getRandomNumber(); public User getUser(); }
DisplayServiceImpl.java
package service.impl; import java.util.Random; import org.springframework.stereotype.Service; import pojo.User; import service.DisplayService; @Service("displayService") public class DisplayServiceImpl implements DisplayService{ @Override public String getHelloWorld() { return "Hello World, Spring 3.0!"; } @Override public int getRandomNumber() { Random random = new Random(); return random.nextInt(100); } @Override public User getUser() { User user = new User("孝","2000-01-01"); return user; } }
controller
DisplayController.java
package web.controller; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.logging.Logger; import javax.servlet.http.HttpServletResponse; import org.codehaus.jackson.map.ObjectMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.servlet.ModelAndView; import pojo.User; import service.DisplayService; @Controller public class DisplayController { private Logger logger = Logger.getLogger(DisplayController.class.getName()); @Autowired private DisplayService displayService; @RequestMapping("display") public ModelAndView helloWorld() { String message = displayService.getHelloWorld(); logger.info(message); return new ModelAndView("display", "message", message); } @RequestMapping(value="display/random") public @ResponseBody String displayJson() throws Exception{ int randomValue = displayService.getRandomNumber(); Map<String,Object> map = new HashMap<String,Object>(); map.put("随机数", randomValue); ObjectMapper objectMapper = new ObjectMapper(); String result = objectMapper.writeValueAsString(map); return result; } @RequestMapping(value="display/user",produces={"application/json;charset=UTF-8"}) public @ResponseBody List<User> displayUser(HttpServletResponse response) throws Exception{ User user = displayService.getUser(); List<User> users = new ArrayList<User>(); users.add(user); return users; } }
spring 配置 app-context.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd"> <context:component-scan base-package="web.controller" /> <context:component-scan base-package="service" /> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="stringHttpMessageConverter" /> <ref bean="jsonHttpMessageConverter" /> </list> </property> </bean> <bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/plain;charset=UTF-8</value> <value>application/json;charset=UTF-8</value> </list> </property> </bean> <bean id="jsonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" /> <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
web.xml 配置
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <display-name>Spring3MVC</display-name> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.html</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.js</url-pattern> </servlet-mapping> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:app-context.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
maven pom.xml 配置
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>SpringMVC</groupId> <artifactId>SpringMVC</artifactId> <packaging>jar</packaging> <version>0.0.1-SNAPSHOT</version> <name>SpringMVC</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>3.1.1.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>3.1.1.RELEASE</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-core-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>1.9.13</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.4</version> </dependency> </dependencies> </project>
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