Rhythmk 一步一步学 JAVA（11）Ibatis 环境配置

1.项目文件分布。

2、example1.java:

package com.rhythmk.example1;

import java.io.IOException;
import java.io.Reader;
import java.sql.SQLException;
import java.util.List;
import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;

public class example1 {

	private static String resource = "com\\rhythmk\\example1\\SqlMapConfig.xml";
	private static SqlMapClient sqlMapClient = null;
	static {
		System.out.println(System.getProperty("user.dir"));
		try {
			Reader reader = Resources.getResourceAsReader(resource);
			sqlMapClient = SqlMapClientBuilder.buildSqlMapClient(reader);
			reader.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		GetAllUser();

		GetUserById(1);
	}

	/*
	 * 根据ID 获取User
	 */
	public static void GetUserById(Integer id) {
		User user = null;
		try {

			sqlMapClient.startTransaction();

			user = (User) sqlMapClient.queryForObject("selectById",
					new Integer("1"));
			System.out.println(user.getName());
			sqlMapClient.commitTransaction();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void GetAllUser() {
		List<User> list = null;
		try {

			list = (List<User>) sqlMapClient.queryForList("selectAll");
			for (User user : list) {
				System.out.println(user.getId() + "," + user.getName());
			}

		} catch (Exception e) {
			e.printStackTrace();
		}

	}

}

　　

3、User.java:

package com.rhythmk.example1;

public class User {

	 public int getId() {
		return Id;
	}
	public void setId(int id) {
		Id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return Age;
	}
	public void setAge(int age) {
		Age = age;
	}
	private int Id;
	 private String  name;
	 private int Age;

}

　　

4、SqlMap.properties:

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/test
username=root
password=rhythmk

5、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>
     <!-- 数据库连接的属性文件 -->
     <properties resource="com\rhythmk\example1\SqlMap.properties" />

     <transactionManager type="JDBC"><!-- type：定义了ibatis的事务管理器有3种，JDBC、JTA、EXTERNAL -->
         <dataSource type="SIMPLE"><!-- type属性指定了数据源的连接类型有3种，SIMPLE、DBCP、JNDI -->
             <property value="${driver}" name="JDBC.Driver" />
             <property value="${url}" name="JDBC.ConnectionURL" />
             <property value="${username}" name="JDBC.Username" />
             <property value="${password}" name="JDBC.Password" />
         </dataSource>
     </transactionManager>

     <!-- 实体类和数据库表的映射 -->
     <sqlMap resource="com\rhythmk\example1\User.xml" />

 </sqlMapConfig>

6.User.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="User" type="com.rhythmk.example1.User" />
  <!-- 查询所有记录  -->
     <select resultClass="User" id="selectAll">
         SELECT  id, name ,age   from  `user`
     </select>

   <!-- 精确查询 按照条件查询记录  按照部门编号DEPTNO查询 -->
   <select parameterClass="int" resultClass="User" id="selectById">
         SELECT  id, name ,age   from  `user` where id=#id#
   </select>
</sqlMap>

SQL:

CREATE TABLE `user` (
`Id` int(11) NOT NULL,
`Name` varchar(32) CHARACTER SET utf8 NOT NULL,
`Age` int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

http://files.cnblogs.com/rhythmK/IbatisExample.rar