转 :手动配置三大框架整合:Spring+Struts2+mybatis
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现在主流的项目框架中,数据库持久层有可能不是hibernate,而是mybatis或者ibatis,其实它们都是一样的,下面我来把环境搭建一下:
【导入相关jar包】新建web项目工程mss,Spring+Struts2+mybatis整合,除了Spring和Struts的jar包外(可以在我的资源中下载),我们还需导入mybatis的几个想jar包:
三大框架整合后jar包:
【配置web.xml】
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<!--?xml version= "1.0" encoding= "UTF-8" ?--> <web-app version= "2.5" 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_2_5.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!-- struts启动配置 --> <filter> <filter-name>struts2</filter-name> <filter- class >org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter- class > </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- spring启动加载配置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springConfig/applicationContext-*.xml</param-value> </context-param> <listener> <listener- class > org.springframework.web.context.ContextLoaderListener </listener- class > </listener> <!-- log4j相关配置 --> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>/WEB-INF/classes/log4j.properties</param-value> </context-param> <context-param> <param-name>log4jRefreshInterval</param-name> <param-value> 60000 </param-value> </context-param> <listener> <listener- class >org.springframework.web.util.Log4jConfigListener</listener- class > </listener> </web-app> |
【Spring公共配置 applicationContext-common.xml】
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<!--?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:aop= "http://www.springframework.org/schema/aop" xmlns:tx= "http://www.springframework.org/schema/tx" xsi:schemalocation=" http: //www.springframework.org/schema/beans http: //www.springframework.org/schema/beans/spring-beans-3.0.xsd http: //www.springframework.org/schema/tx http: //www.springframework.org/schema/tx/spring-tx-3.0.xsd http: //www.springframework.org/schema/aop http: //www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <!-- 读取配置文件 --> <bean id= "propertyConfigurer" class = "org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" > <property name= "location" value= "classpath:jdbc.properties" > </property></bean> <!-- 数据库连接池 --> <bean id= "dataSource" class = "org.apache.commons.dbcp.BasicDataSource" destroy-method= "close" > <property name= "driverClassName" > <value>${jdbc_driver}</value> </property> <property name= "url" > <value>${jdbc_url}</value> </property> <property name= "username" > <value>${jdbc_user}</value> </property> <property name= "password" > <value>${jdbc_password}</value> </property> <property name= "maxActive" value= "100" ></property> <property name= "maxIdle" value= "30" ></property> <property name= "maxWait" value= "500" ></property> <property name= "defaultAutoCommit" value= "true" ></property> </bean> <!-- 事务配置 --> <bean id= "transactionManager" class = "org.springframework.jdbc.datasource.DataSourceTransactionManager" > <property name= "dataSource" ref= "dataSource" > </property></bean> <!-- 实体映射类--> <bean id= "sqlSessionFactory" class = "org.mybatis.spring.SqlSessionFactoryBean" > <property name= "dataSource" ref= "dataSource" > <property name= "typeAliasesPackage" value= "com.mss.common.pojo" > </property></property></bean> </aop:aspectj-autoproxy></beans> |
数据库配置文件jdbc.properties:
【struts2公共配置】
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<!--?xml version= "1.0" encoding= "UTF-8" ?--> <struts> <!-- 将struts2交给spring管理--> <constant name= "struts.configuration.xml.reload" value= "true" > <constant name= "struts.action.extension" value= "action,do,webwork" > <constant name= "struts.enable.DynamicMethodInvocation" value= "true" > <constant name= "struts.devMode" value= "true" > <constant name= "struts.multipart.maxSize" value= "100971520" ></constant> <constant name= "struts.i18n.encoding" value= "UTF-8" ></constant> <constant name= "struts.objectFactory.spring.autoWire" value= "name" ></constant> <constant name= "struts.objectFactory" value= "spring" ></constant> <constant name= "struts.custom.i18n.resources" value= "messages" ></constant> <include file= "strutsConfig/struts-user.xml" ></include> </constant></constant></constant></constant></struts> |
【创建数据表结构】:项目中我们使用的是mysql数据库,在里面新建了一个user表:
【搭建项目结构】:这里我使用了三层架构:Action-->Service-->Dao(实体类)
编写user实体类:
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package com.mss.common.pojo; import java.io.Serializable; public class User implements Serializable { /** * */ private static final long serialVersionUID = 1L; private String id; private String userName; private String password; private String email; public String getId() { return id; } public void setId(String id) { this .id = id; } public String getUserName() { return userName; } public void setUsername(String userName) { this .userName = userName; } public String getPassword() { return password; } public void setPassword(String password) { this .password = password; } public String getEmail() { return email; } public void setEmail(String email) { this .email = email; } } |
编写我们的dao层UserDao:
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package com.mss.user.dao; import java.util.List; import com.mss.common.pojo.User; public interface UserDao { /** * 添加用户 * @param user */ public void addUser(User user); /** * 列出所有用户 * @return */ public List<user> queryUsers(); /** * 删除用户 * @param id */ public void delUser(String id); } </user> |
使用mybatis,我们得配置xml文件,将实体类User与表user映射,也将UserDao中的方法进行映射实现,这样我们不需要写UserDaoImpl,因为对数据库的操作也在这个xml中进行:UserDao.xml,这个很重要
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<!--?xml version= "1.0" encoding= "UTF-8" ?--> <mapper namespace= "com.mss.user.dao.UserDao" > <!-- User实体类、User表映射,注意实体类User和表名应该一致,字段下面可配置 --> <resultmap id= "UserMap" type= "com.mss.common.pojo.User" > <result property= "id" column= "ID" > <result property= "userName" column= "USERNAME" > <result property= "password" column= "PASSWORD" > <result property= "email" column= "EMAIL" > </result></result></result></result></resultmap> <!-- 将UserDao中的方法进行配置,id=方法名称,parameterType=参数类型,resultMap返回的结果, 当用户使用UserDao中的方法时,mybaties自己会找相应配置文件中的对数据库的操作 --> <insert id= "addUser" parametertype= "User" > INSERT INTO USER( ID, USERNAME, PASSWORD, EMAIL ) VALUES ( #{id}, #{userName}, #{password}, #{email} ) </insert> <!-- 返回一个上面的 resultMap实例,这里的resultMap要与上面的配置的resultMap中的id一致--> <select id= "queryUsers" resultmap= "UserMap" > SELECT * FROM USER </select> <!-- 删除信息 --> <delete id= "delUser" parametertype= "string" > DELETE FROM USER WHERE ID = #{id} </delete> </mapper> |
编写我们的Service和ServiceImpl类,操作Dao层:UserService、UserServiceImpl
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public interface UserService { /** * 添加用户 * @param user */ public void addUser(User user); /** * 列出所有的用户 * @return */ public List<user> queryUsers(); /** * 删除用户 * @param id */ public void delUser(String id); } </user> |
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package com.mss.user.serviceImpl; import java.util.List; import com.mss.common.pojo.User; import com.mss.user.dao.UserDao; import com.mss.user.service.UserService; public class UserServiceImpl implements UserService{ private UserDao userDao;
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