guice整合struts2与jpa，guice的使用（九）
传统我们开发一般使用ssh，但是有些微服务应用的项目我们不需要这么臃肿的框架做开发，于是采用了guice+struts2+guice作为框架组合进行了开发。
先看我们项目引用的jar包:
使用的时候一定要主要jar的版本问题.我项目在jdk1.7上面开发的
然后看一下web.xml的配置:
1 <?xml version="1.0" encoding="UTF-8"?> 2 <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_3_0.xsd" version="3.0"> 3 <filter> 4 <filter-name>guiceFilter</filter-name> 5 <filter-class>com.google.inject.servlet.GuiceFilter</filter-class> 6 </filter> 7 <filter-mapping> 8 <filter-name>guiceFilter</filter-name> 9 <url-pattern>/*</url-pattern> 10 </filter-mapping> 11 <listener> 12 <listener-class>com.ming.core.web.listener.GoogleGuiceServletContextListener</listener-class> 13 </listener> 14 15 <welcome-file-list> 16 <welcome-file>index.jsp</welcome-file> 17 </welcome-file-list> 18 </web-app>
然后是struts.xml的配置:
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE struts PUBLIC 3 "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" 4 "http://struts.apache.org/dtds/struts-2.3.dtd"> 5 6 <struts> 7 <!-- 引用guice代理 --> 8 <constant name="struts.objectFactory" value="guice" /> 9 <constant name="struts.i18n.encoding" value="UTF-8" /> 10 <constant name="struts.enable.DynamicMethodInvocation" value="true"/> 11 <include file="com/ming/user/action/userStruts.xml"></include> 12 </struts>
然后是jpa的persistence.xml的配置:
1 <persistence xmlns="http://java.sun.com/xml/ns/persistence" 2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" 4 version="2.0"> 5 <persistence-unit name="myunit" transaction-type="RESOURCE_LOCAL"> 6 7 <provider>org.hibernate.ejb.HibernatePersistence</provider> 8 <class>com.ming.user.entity.Student</class> 9 <properties> 10 <property name="hibernate.connection.provider_class" 11 value="org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider" /> 12 <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" /> 13 <property name="hibernate.c3p0.max_size" value="2" /> 14 <property name="hibernate.c3p0.min_size" value="1" /> 15 <property name="hibernate.c3p0.timeout" value="120" /> 16 <property name="hibernate.c3p0.max_statements" value="100" /> 17 <property name="hibernate.c3p0.idle_test_period" value="120" /> 18 <property name="hibernate.c3p0.acquire_increment" value="1" /> 19 <property name="hibernate.show_sql" value="true" /> 20 <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" /> 21 <property name="hibernate.connection.url" 22 value="jdbc:mysql://localhost:3306/test?autoReconnect=true&useUnicode=true&characterEncoding=gbk" /> 23 <property name="hibernate.connection.username" value="root" /> 24 <property name="hibernate.connection.password" value="root" /> 25 <property name="hibernate.temp.use_jdbc_metadata_defaults" 26 value="false" /> 27 </properties> 28 29 <!-- <properties> <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" 30 /> <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" 31 /> <property name="hibernate.connection.driver" value="com.mysql.jdbc.Driver" 32 /> <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/test?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8" 33 /> <property name="hibernate.connection.user" value="root" /> <property name="hibernate.connection.password" 34 value="root" /> <property name="hibernate.temp.use_jdbc_metadata_defaults" 35 value="false"/> </properties> --> 36 </persistence-unit> 37 </persistence>
然后是module的一些配置:
package com.ming.core.web.listener; import com.google.inject.Guice; import com.google.inject.Injector; import com.google.inject.servlet.GuiceServletContextListener; import com.ming.user.UserModule; public class GoogleGuiceServletContextListener extends GuiceServletContextListener { @Override protected Injector getInjector() { return Guice.createInjector(new UserModule()); //如果绑定多个module，需要像下面这样就可以了 //return Guice.createInjector(new UserModule(),new UserModule()); } }
package com.ming.user; import org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter; import com.google.inject.AbstractModule; import com.google.inject.Singleton; import com.google.inject.persist.PersistFilter; import com.google.inject.persist.jpa.JpaPersistModule; import com.google.inject.servlet.ServletModule; import com.google.inject.struts2.Struts2GuicePluginModule; public class UserModule extends AbstractModule { @Override protected void configure() { install(new ServletModule(){ @Override protected void configureServlets() { install(new JpaPersistModule("myunit")); //这个一定要写最前面 install(new Struts2GuicePluginModule());//这个是struts2与guice组件结合的注入 bind(StrutsPrepareAndExecuteFilter.class).in(Singleton.class);//这个类似struts2的那个过滤 filter("/*").through(StrutsPrepareAndExecuteFilter.class); filter("/*").through(PersistFilter.class); } }); } }
以上是几个重要的配置文件。
下面是项目结构:
注意persistence.xml这个配置文件要放在src下的META-INF下。
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