Struts2+spring+mybatis註解模式
阿新 • • 發佈:2019-02-19
匯入相應的jar包
先寫好db.properties檔案,用於存放資料庫的相關資訊
driver=com.mysql.jdbc.Driver
password=root
username=root
url=jdbc\:mysql\://localhost\:3306/he
新建spring的配置檔案
<?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" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:config/db.properties"/> <property name="fileEncoding" value="utf-8" /> </bean> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="${driver}"/> <property name="url" value="${url}"/> <property name="username" value="${username}"/> <property name="password" value="${password}"/> </bean> <context:annotation-config/> <context:component-scan base-package="com.mybatis"/> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="mapperLocations" value="classpath:com/mybatis/mapper/*"/> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.mybatis.dao"/> </bean> </beans>
在web.xml中填寫相應的資訊
<?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"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:config/spring-mybatis.xml</param-value> </context-param> <!-- spring監聽器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <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> <listener> <display-name>時間的監聽器</display-name> <listener-class>com.mybatis.utils.Timers</listener-class> </listener> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
在src中新建mapper的配置檔案
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.mybatis.dao.UserMapper"> <select id="getUser" resultMap="userMap"> select*from xiu </select> <select id="login" parameterType="com.mybatis.entity.User" resultType="java.lang.Integer"> select count(*) from xiu where username=#{username} and password=#{password} </select> </mapper>
新建的resultmap
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.mybatis.dao.UserMapper">
<resultMap type="com.mybatis.entity.User" id="userMap">
<result property="id" column="id"/>
<result property="username" column="username"/>
<result property="password" column="password"/>
</resultMap>
</mapper>
利用mybatis的介面程式設計
package com.mybatis.dao;
import java.util.List;
import com.mybatis.entity.User;
/**
*
* @author 戴禮明
*日期: 2015-12-9
*content:使用者介面
*/
public interface UserMapper {
<span style="white-space:pre"> </span>/**
<span style="white-space:pre"> </span> *使用者登入
<span style="white-space:pre"> </span> * @param user 需要登入的使用者
<span style="white-space:pre"> </span> */
<span style="white-space:pre"> </span>public int login(User user);
<span style="white-space:pre"> </span>
<span style="white-space:pre"> </span>/**
<span style="white-space:pre"> </span> * 查詢所有的使用者
<span style="white-space:pre"> </span> * @return 返回查詢結果
<span style="white-space:pre"> </span> */
public List<User> getUser();<span style="white-space:pre"> </span>
}