使用SqlSessionTemplate实现数据库的操作

EmployeeMapper.xml

<?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.bdqn.dao.EmployeeMapper">

    <select id="getEmployeeList" resultType="Employee">
        select * from Employee
    </select>
    <insert id="addEmployee" parameterType="Employee">
        insert into employee (sn,name,gender) values (#{sn},#{name},#{gender})
    </insert>
    <update id="modifyEmployee" parameterType="Employee">
        update employee
        <set>
            <if test="sn != null"> sn = #{sn},</if>
            <if test="name != null"> name = #{name},</if>
            <if test="gender != null"> gender = #{gender}</if>
        </set>
        where id = #{id}
    </update>
    <delete id="deleteEmployee" parameterType="Employee">
        delete from employee where id = #{id}
    </delete>
</mapper>

Employee.java

public class Employee {
    private Integer id;
    private String sn;
    private String name;
    private String gender;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getSn() {
        return sn;
    }
    public void setSn(String sn) {
        this.sn = sn;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }

}

测试类

public class EmployeeDaoTest {

    private SqlSessionTemplate sqlSessionTemplate;

    protected ApplicationContext ctx = null;
    private EmployeeDaoTest test;

    private Logger logger = Logger.getLogger(EmployeeDaoTest.class);

    @Before
    public void setUp() throws Exception{
        ctx = new ClassPathXmlApplicationContext("applicationContext-mybatis.xml");
        test = (EmployeeDaoTest)ctx.getBean("employeeDaoTest");
    }

    @Test
    public void getEmployeeListTest() {
        List<Employee>  list = test.sqlSessionTemplate.selectList("cn.bdqn.dao.EmployeeMapper.getEmployeeList");
        logger.debug("testGetEmployeeList---> " + list.size());
    }

    @Test
    public void addEmployeeTest(){
        Employee employee = new Employee();
        employee.setSn("CESHI");
        employee.setName("测试");
        employee.setGender("男");
        int flag = test.sqlSessionTemplate.insert("cn.bdqn.dao.EmployeeMapper.addEmployee", employee);
        Assert.assertEquals(1, flag);
    }

    @Test
    public void modifyEmployeeTest(){
        Employee employee = new Employee();
        employee.setId(8);
        employee.setSn("CESHI888");
        employee.setName("测试888");
        employee.setGender("男");
        int flag = test.sqlSessionTemplate.update("cn.bdqn.dao.EmployeeMapper.modifyEmployee", employee);
        Assert.assertEquals(1, flag);
    }

    @Test
    public void deleteEmployeeTest(){
        Employee employee = new Employee();
        employee.setId(8);
        int flag = test.sqlSessionTemplate.delete("cn.bdqn.dao.EmployeeMapper.deleteEmployee", employee);
        Assert.assertEquals(1, flag);
    }
    public SqlSessionTemplate getSqlSessionTemplate() {
        return sqlSessionTemplate;
    }

    public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
        this.sqlSessionTemplate = sqlSessionTemplate;
    }

}

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
       <typeAliases>
           <!--这里给实体类取别名，方便在mapper配置文件中使用-->
          <package name="cn.bdqn.pojo"/>
       </typeAliases>
</configuration>

applicationContext-mybatis.xml

<?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/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
     http://www.springframework.org/schema/context
     http://www.springframework.org/schema/context/spring-context-3.0.xsd">     

       <!-- Properties文件读取配置，base的properties -->
       <context:property-placeholder location="classpath:jdbc.properties"/>   

       <!-- JNDI获取数据源(使用dbcp连接池) -->
       <!-- 因为我们使用的这个数据源是采用 dbcp连接池，对于连接池来说，整个应用中只有一个，
                              所以作用域需要设置成单例 因为获取数据源是非常消耗性能，所以我们也要采用单例模式-->
      <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
      scope="singleton">
           <property name="driverClassName" value="${driverClassName}" />
           <property name="url" value="${url}" />
           <property name="username" value="${username}" />
           <property name="password" value="${password}" />
      </bean>

       <!-- 事务配置  在需要事务管理的地方加@Transactional 注解或者AOP进行事务处理-->
       <bean id="transactionManager"
         class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
       </bean>

       <!-- 配置mybitas SqlSessionFactoryBean  -->
       <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
           <property name="dataSource" ref="dataSource" />
           <property name="configLocation" value="classpath:mybatis-config.xml" />
           <property name="mapperLocations" value="classpath:cn/bdqn/dao/*.xml"/>
       </bean>  

       <!-- 配置SqlSessionTemplate -->
        <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
            <!-- spring使用构造的方法进行注入 -->
            <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory" />
        </bean>

        <!-- 把sqlSessionTemplate注入测试类 -->
        <bean id="employeeDaoTest" class="cn.bdqn.test.EmployeeDaoTest">
            <property name="sqlSessionTemplate" ref="sqlSessionTemplate"/>
        </bean>

</beans>

加个日志文件和数据文件就好了。