Spring + Ibatis + MySql实例详解

﹏ヽ暗。殇╰゛Y 2022-06-17 08:59 126阅读 0赞

1. 环境：  
 将以下jar包加入到工程，commons-logging-1.0.4.jar、ibatis-2.3.0.677.jar、mysql-connector-java-5.0.3-bin.jar、spring.jar。

2. 在MySql中创建数据库和相应的表：

#############################################################################################
    CREATE DATABASE MYDB;
    use MYDB;
    
    Drop TABLE IF EXISTS `MYDB`.`student`;
    Create TABLE `MYDB`.`student` (
    `name` varchar(40) NOT NULL,
    `psw` varchar(10) NOT NULL,
    `enabled` boolean
    );
    insert into student values("lanp","lanpiao",true);
    insert into student values("ph","ph",true);
    insert into student values("wxh","wxh",true);

3. 创建实体Bean，Student.java

package com.lanp.beans;
    
    import java.io.Serializable;
    
    /**
     * Student Bean
     * @author LanP
     * @since 2011-11-27 15:36
     * @version V1.0
     */
    public class Student implements Serializable {
    
    	private static final long serialVersionUID = -7163004163334815825L;
    	
    	private String name;
    	private String psw;
    	private Boolean enabled;
    	
    	public String getName() {
    		return name;
    	}
    	public void setName(String name) {
    		this.name = name;
    	}
    	public String getPsw() {
    		return psw;
    	}
    	public void setPsw(String psw) {
    		this.psw = psw;
    	}
    	public Boolean getEnabled() {
    		return enabled;
    	}
    	public void setEnabled(Boolean enabled) {
    		this.enabled = enabled;
    	}
    }

4. 创建Student实体Bean与数据库映射的SQLMap文件，student.xml：

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE sqlMap      
        PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"      
        "http://ibatis.apache.org/dtd/sql-map-2.dtd">
    <sqlMap>
    	
    	<typeAlias alias="student" type="com.lanp.beans.Student"/>
    	
    	
    	<resultMap id="studentMap" class="com.lanp.beans.Student">
    		<result property="name" column="name"/>
    		<result property="psw" column="psw"/>
    		<result property="enabled" column="enabled"/>
    	</resultMap>
    	
    	<insert id="insertStudent" parameterClass="student">
    		<![CDATA[
    			insert into student values(#name#,#psw#,#enabled#);
    		]]>
    	</insert>
    	
    	
    	<select id="queryStudentById" parameterClass="string" resultMap="studentMap">
    		<![CDATA[
    			SELECT * FROM STUDENT WHERE NAME=#name#
    		]]>
    	</select>
    	
    	
    	<select id="queryAllStudents" resultMap="studentMap">
    		<![CDATA[
    			SELECT * FROM STUDENT
    		]]>
    	</select>
    </sqlMap>

5. 创建访问数据库的DAO接口，StudentDao.java：

package com.lanp.dao;
    
    import com.lanp.beans.Student;
    
    public interface StudentDao {
    	Student getStudent(String name);
    }

6. 创建访问数据库的DAO接口实现类，StudentDaoImpl.java：

package com.lanp.dao;
    
    import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;
    
    import com.lanp.beans.Student;
    
    public class StudentDaoImpl extends SqlMapClientDaoSupport implements StudentDao {
    
    	@Override
    	public Student getStudent(String name) {
    		try{
    			return (Student)getSqlMapClientTemplate().queryForObject("queryStudentById", name);
    		} catch(Exception e) {
    			e.printStackTrace();
    		}
    		return null;
    	}
    
    }

7. Ibatis总配置文件，sqlMapConfig.xml：

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE sqlMapConfig      
        PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"      
        "http://ibatis.apache.org/dtd/sql-map-config-2.dtd">
    <sqlMapConfig>
    	
    	<sqlMap resource="com/lanp/beans/student.xml"/>
    </sqlMapConfig>

8. spring配置文件，SQLMapClient.xml：

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
    <beans>
        
        
    	  <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    	    <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    	    <property name="url" value="jdbc:mysql://127.0.0.1:3306/MYDB"/>
    	    <property name="username" value="root"/>
    	    <property name="password" value="157891"/>
    	  </bean>
        
        <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
      		<property name="configLocation">
        		<value>sqlMapConfig.xml</value>
      		</property>
      		<property name="dataSource">
        		<ref bean="dataSource"/>
      		</property>
    	</bean>
        
    	<bean id="studentDao" class="com.lanp.dao.StudentDaoImpl">
      		<property name="sqlMapClient">
        		<ref bean="sqlMapClient"/>
      		</property>
    	</bean>
    	
    </beans>

9. 测试类，TestStudent：

package com.lanp.beans;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    import com.lanp.dao.StudentDao;
    
    /**
     * 测试Ibatis
     * @author LanP
     * @since 2011-11-27 15:36
     * @version V1.0
     */
    public class TestStudent {
    
    	public static void main(String[] args) {
    
    		//1.初始化beans.xml文件
    		ApplicationContext ctx = new ClassPathXmlApplicationContext("SQLMapClient.xml");
    		//2.获取MYDB数据库Student表中的内容
    		StudentDao studentDao = (StudentDao)ctx.getBean("studentDao");
    		if(null != studentDao) {
    			Student student = studentDao.getStudent("ph");
    			if(null != student) {
    				System.out.println("== 学生名字：" + student.getName() + ",学生密码：" + student.getPsw());
    			} else {
    				System.out.println("== 没有该学生信息！");
    			}
    		} else {
    			System.out.println("== StudentDao注入失败！");
    		}
    			
    	}
    
    }

OK,TKS!