ssm plug-in configuration (idea)

1.ssm框架springmvc-servlet配置
<?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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/context 
       http://www.springframework.org/schema/context/spring-context.xsd 
       http://www.springframework.org/schema/tx 
       HTTP: // the WWW .springframework.org / Schema / tx / the Spring-tx.xsd 
       http://www.springframework.org/schema/mvc 
       http://www.springframework.org/schema/mvc/spring-mvc.xsd 
"> 
    <! - scan global -> 
    <context: Component Base-Package-scan = "cn.kgc" /> 
! <- Mapper scan configuration -> 
    <the bean ID = "Configurer" class = "org.mybatis.spring. mapper.MapperScannerConfigurer "> 
        <Property name =" basePackage "value =" cn.kgc.mapper "/> 
    </ the bean> 
<-! drive MVC annotation ->
    <MVC: Annotation-Driven /> 
    <-! annotation-driven transactions ->
    <tx:annotation-driven/>
    <!--驱动管理数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/kgc"/>
        <property name="username" value="root"/>
        <property name="password" value="151506"/>
    </bean>
    <!--sqlSessionFactoryBean-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="typeAliases" value="cn.kgc.util.PageUtil"/>
        <property name="typeAliasesPackage" value="cn.kgc.pojo"/>
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>

        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageHelper">
                    <property name="properties">
                        <value>
                            dialect=hsqldb
                            reasonable=true
                        </value>
                    </property>
                </bean>
            </array>
        </property>

    </bean>
    <!--数据源事务管理-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <Property name = "the dataSource" REF = "the dataSource" /> 

    </ the bean> 


</ Beans> 

2.mapper configure dynamic SQL statements:

<?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="cn.kgc.mapper.EmpMapper">
    <select id="selectPage" parameterType="PageUtil" resultType="map">
        SELECT d.dname,d.loc,e.* from emp e,dept d where e.deptno=d.deptno
        <if test="emp!=null and emp.deptno!=null and emp.deptno!=-1">
            and e.deptno=#{emp.deptno}
        </if>
        <if test="startrow!=null and pagesize!=null">
            limit #{startrow},#{pagesize}
        </if>
    </select>
    <select id="totalcount" parameterType="Emp" resultType="Integer">
        SELECT count(*) from emp
        <where>
            <if test="deptno!=null and deptno!=-1">
                AND  deptno=#{deptno}
            </if>
        </where>
    </select>
</mapper>