1.引
前面的章节已经分析了Spring的IOC容器、AOP、事物管理等，今天开始分析SpringMVC的实现。当然需要先搭建一下SpringMVC源码的阅读环境，因为之前的代码分析都是非Web环境的。
2.新建Gradle模块
2.1 右键spring源码根目录，新建模块，弹出窗口选择Gradle --> 同时勾选java和web
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2.2 选择根目录并输入ArtifactId，点击确定
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2.3 完善项目结构
- 通过前两步的操作，得到一个空的web项目，接下来就要将其完善。打开build.gradle配置文件，并配置：
plugins { id 'java' id 'war' } group 'org.springframework' version '5.1.0.RC1' sourceCompatibility = 1.8 repositories { mavenCentral() } dependencies { compile(project(":spring-beans")) compile(project(":spring-core")) optional(project(":spring-aop")) optional(project(":spring-context")) optional(project(":spring-oxm")) optional(project(":spring-jdbc")) optional(project(":spring-web")) optional(project(":spring-webmvc")) optional(project(":spring-test")) optional group: 'javax.servlet', name: 'javax.servlet-api', version: '3.1.0' optional group: 'asm', name: 'asm', version: '3.3.1' optional group: 'junit', name: 'junit', version: '4.12' optional group: 'cglib', name: 'cglib', version: '2.2.2' optional group: 'org.jsoup', name: 'jsoup', version: '1.11.3' optional group: 'commons-dbcp', name: 'commons-dbcp', version: '1.4' optional group: 'mysql', name: 'mysql-connector-java', version: '5.1.38' optional("javax.annotation:javax.annotation-api:1.3.2") optional("javax.ejb:javax.ejb-api:3.2") optional("javax.enterprise.concurrent:javax.enterprise.concurrent-api:1.0") optional("javax.inject:javax.inject:1") optional("javax.interceptor:javax.interceptor-api:1.2.2") optional("javax.money:money-api:1.0.3") optional("javax.validation:validation-api:1.1.0.Final") optional("javax.xml.ws:jaxws-api:2.3.0") optional("org.aspectj:aspectjweaver:${aspectjVersion}") optional("org.codehaus.groovy:groovy:${groovyVersion}") optional("org.beanshell:bsh:2.0b5") optional("joda-time:joda-time:2.10") optional("org.hibernate:hibernate-validator:5.4.2.Final") optional("org.jetbrains.kotlin:kotlin-reflect:${kotlinVersion}") optional("org.jetbrains.kotlin:kotlin-stdlib:${kotlinVersion}") testCompile("org.codehaus.groovy:groovy-xml:${groovyVersion}") testCompile("org.codehaus.groovy:groovy-jsr223:${groovyVersion}") testCompile("org.codehaus.groovy:groovy-test:${groovyVersion}") testCompile("org.apache.commons:commons-pool2:2.6.0") testCompile("javax.inject:javax.inject-tck:1") testRuntime("javax.xml.bind:jaxb-api:2.3.0") testRuntime("org.glassfish:javax.el:3.0.1-b08") testRuntime("org.javamoney:moneta:1.3") }
- 在resources资源文件下添加log4j.properties和spring-context.xml配置文件
# Output pattern : date [thread] priority category - message FATAL 0 ERROR 3 WARN 4 INFO 6 DEBUG 7 log4j.rootLogger=INFO, Console, RollingFile #Console log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.layout=org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=%d %-5p [%c{5}] - %m%n #RollingFile log4j.appender.RollingFile=org.apache.log4j.DailyRollingFileAppender log4j.appender.RollingFile.File=mylog.log log4j.appender.RollingFile.layout=org.apache.log4j.PatternLayout log4j.appender.RollingFile.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n #log4j.logger.java.sql=DEBUG #Springframework level #log4j.logger.org.springframework=ERROR #Hibernate level #log4j.logger.org.hibernate=ERROR #log4j.logger.org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory=ERROR #log4j.logger.org.hibernate.search.impl.ConfigContext=ERROR #log4j.logger.net.sf.ehcache.config.CacheConfiguration=ERROR #Project defalult level #log4j.logger.org.activiti.engine.impl.persistence=DEBUG #log4j.logger.org.apache.shiro=DEBUG log4j.logger.com.thinkgem.jeesite=DEBUG log4j.logger.com.thinkgem.jeesite.common.security.shiro=WARN log4j.logger.com.thinkgem.jeesite.common.utils.JedisUtils=WARN log4j.logger.com.thinkgem.jeesite.modules.sys.web.LoginController=WARN log4j.logger.com.thinkgem.jeesite.modules.oa.dao.OaNotifyDao.findCount=WARN
<?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:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd" default-lazy-init="true"> <!-- 采用注释的方式配置bean --> <context:annotation-config /> <!-- proxy-target-class默认"false",更改为"ture"使用CGLib动态代理 --> <aop:aspectj-autoproxy/> <!-- 开启自动扫包 --> <context:component-scan base-package="com.lyc.cn"> <!--制定扫包规则，不扫描@Controller注解的JAVA类，其他的还是要扫描 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
- 在WEB-INF下添加web.xml和example-servlet.xml配置文件
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <!-- 项目名 --> <display-name>example</display-name> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <servlet> <servlet-name>example</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>example</servlet-name> <url-pattern>/example/</url-pattern> </servlet-mapping> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-context.xml</param-value> </context-param> <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> </web-app>
<?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:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 开启注解模式驱动 --> <!-- springmvc中配置这个标签默认注册三个bean：RequestMappingHandlerMapping，RequestMappingHandlerAdapter，DefaultHandlerExceptionResolver --> <mvc:annotation-driven /> <!-- 扫包 --> <context:component-scan base-package="com.lyc.cn"></context:component-scan> <!-- 视图渲染 jsp/freemaker/velocity --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 制定页面存放的路径 --> <property name="prefix" value="/WEB-INF/pages/"></property> <!-- 文件的后缀 --> <property name="suffix" value=".jsp"></property> </bean> </beans>
- 在WEB-INF下新建pages文件夹并添加sayHello.jsp
<%@ 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> sayHello...<br/> ${myBean.name}<br/> ${myBean.age} </body> </html>
- 添加TestController和MyBean
package com.lyc.cn.controller; import com.lyc.cn.vo.MyBean; 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; @Controller public class TestController { @RequestMapping("sayHello") @ResponseBody public ModelAndView sayHello(int age, String name) { ModelAndView mav = new ModelAndView(); MyBean bean = new MyBean(age, name); mav.addObject("myBean", bean); mav.setViewName("sayHello"); System.out.println(bean.toString()); return mav; } }
package com.lyc.cn.vo; public class MyBean { private int age; private String name; public MyBean(int age, String name) { this.age = age; this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } }
3.配置tomcat并运行项目
tomcat配置比较简单，不赘述了。启动项目在地址栏输入：http://localhost:8080/example/sayHello?age=12&name=Jack
