ibatis增删改查实例

相对Hibernate和Apache OJB 等“一站式”ORM解决方案而言，ibatis 是一种“半
自动化”的ORM实现。
所谓“半自动”，可能理解上有点生涩。纵观目前主流的ORM，无论Hibernate 还是
Apache OJB，都对数据库结构提供了较为完整的封装，提供了从POJO 到数据库表的全
套映射机制。程序员往往只需定义好了POJO 到数据库表的映射关系，即可通过Hibernate
或者OJB 提供的方法完成持久层操作。程序员甚至不需要对SQL 的熟练掌握，
Hibernate/OJB 会根据制定的存储逻辑，自动生成对应的SQL 并调用JDBC 接口加以执
行。 ----摘自官方资料的一段话

iBatis是一种很好的解决方案，使用起来很灵活，参考一些网络中的资料我也想把自己的使用过程写下来，如有错误希望指正。

环境：JDK1.5+Eclipse3.2  使用时仅需要在Eclipse中导入项目。

首先是表结构, 提供了两种数据库的支持分别为MySQL与hsqldb，可以根据实际情况选择使用。以MySQL

create database if not exists `ibatis_schema`;

USE `ibatis_schema`;

drop table if exists `t_user`;

CREATE TABLE `t_user` (
  `id` int(12) NOT NULL auto_increment,
  `name` varchar(50) default NULL,
  `date` date default NULL,
  PRIMARY KEY  (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=GBK;

Insertinto	`t_user`(name,date) values('liulu','2007-03-15'),('liulu2','2007-03-15'),('liulu3','2007-03-15');

然后是iBatis的配置文件 SqlMapConfig.xml
这里进行数据源的配置以及一些参数的设置和优化

1.<?xml version="1.0" encoding="UTF-8" ?>   
2.  
3.<!DOCTYPE sqlMapConfig PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"  
4.    "http://ibatis.apache.org/dtd/sql-map-config-2.dtd">   
5.  
6.<sqlMapConfig>   
7.  
8.    <settings cacheModelsEnabled="true" useStatementNamespaces="true" />   
9.    <transactionManager type="JDBC">   
10.        <dataSource type="SIMPLE">   
11.            <property name="JDBC.Driver" value="com.mysql.jdbc.Driver" />   
12.            <property name="JDBC.ConnectionURL" value="jdbc:mysql://localhost/ibatis_schema" />   
13.            <property name="JDBC.Username" value="root" />   
14.            <property name="JDBC.Password" value="1234" />   
15.        </dataSource>   
16.    </transactionManager>   
17.       
18.    <sqlMap resource="com/javaeye/liulu/maps/User.xml" />   
19.</sqlMapConfig>  

User.java就是domain了，是映射的对象。

package com.javaeye.liulu.domain;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable{
	private int id;
	private String name;
	private Date date;
	public Date getDate() {
		return date;
	}
	public void setDate(Date date) {
		this.date = date;
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
}

下面是比较重要的SQL Map XML映射文件，所有方法都在这里。
User.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN"
"http://www.ibatis.com/dtd/sql-map-2.dtd">

<sqlMap namespace="User">
	<typeAlias alias="UserObject" type="com.javaeye.liulu.domain.User" />
	<resultMap id="userResult" class="UserObject">
		<result property="id" column="id" jdbcType="NUMBER" />
		<result property="name" column="name" jdbcType="VARCHAR2" />
		<result property="date" column="date" jdbcType="DATE" />
	</resultMap>

	<select id="getByPK" resultMap="userResult" parameterClass="UserObject">
		<![CDATA[ 
		select
		  id,
		  name, 
		  date 
		from t_user 
		where id = #id# 
		]]>
	</select>
	
	<select id="getById" resultMap="userResult" parameterClass="java.lang.String">
		<![CDATA[ 
		select
		  id,
		  name, 
		  date 
		from t_user 
		where id = $String$
		]]>
	</select>

	<sql id="Dy_SC">
		<dynamic prepend="WHERE">
			<isNotNull prepend="AND" property="id">id like #id#</isNotNull>
			<isNotNull prepend="AND" property="name">name like #name#</isNotNull>
		</dynamic>
	</sql>

	<select id="getUser" resultMap="userResult">
		<![CDATA[ 
		select
		  id,
		  name, 
		  date 
		from t_user 
		]]>
		<include refid="Dy_SC" />
	</select>

	<insert id="insertUser" parameterClass="UserObject">
		INSERT INTO t_user (name,date) VALUES (#name#,#date#)
	</insert>
	
	<insert id="insertUserTest" parameterClass="UserObject">
		INSERT INTO t_user (id,name,date) VALUES (#id#,#name#,#date#)
	</insert>

	<update id="updateUser" parameterClass="UserObject">
		<![CDATA[ 
		UPDATE t_user 
		SET  
		  name=#name#, 
		  date=#date# 
		WHERE id = #id#
		]]>
	</update>

	<delete id="deleteUser" parameterClass="java.lang.String">
		delete from t_user where id=#value#
	</delete>

	<statement id="getMaxId" resultClass="java.lang.Integer">
		select Max(id) from t_user
	</statement>

	<statement id="getMax" resultClass="java.util.HashMap">
		select Max(id) as id,Max(name) as name,Max(date) as date from t_user
	</statement>

</sqlMap>

这样就可以来测试了，测试也使用了两种方法，先使用一个普通应用程序来测试一下程序的运行好了。
代码

package com.javaeye.liulu;

import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import com.ibatis.common.jdbc.ScriptRunner;
import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
import com.javaeye.liulu.domain.User;

public class Main {

	//hsql初始化,对MySQL没有影响
	static {
		try {
			Properties props = Resources.getResourceAsProperties("properties/database.properties");
			String url = props.getProperty("url");
			String driver = props.getProperty("driver");
			String username = props.getProperty("username");
			String password = props.getProperty("password");
			if (url.equals("jdbc:hsqldb:mem:ibatisDemo")) {
				Class.forName(driver).newInstance();
				Connection conn = DriverManager.getConnection(url, username, password);
				try {
					ScriptRunner runner = new ScriptRunner(conn, false, false);
					runner.setErrorLogWriter(null);
					runner.setLogWriter(null);
					runner.runScript(Resources.getResourceAsReader("ddl/hsql/ibatisdemo-hsqldb-schema.sql"));
					runner.runScript(Resources.getResourceAsReader("ddl/hsql/ibatisdemo-hsqldb-dataload.sql"));
				} finally {
					conn.close();
				}
			}
		} catch (Exception e) {
			throw new RuntimeException("Description.  Cause: " + e, e);
		}
	}

	/**
	 * 初始化iBatis获得一个SqlMapClient对象
	 * 
	 * @param
	 * @return SqlMapClient
	 */
	public static SqlMapClient getSqlMapClient() {
		String resource = "com/javaeye/liulu/maps/SqlMapConfig.xml";
		SqlMapClient sqlMap = null;
		try {
			Reader reader = Resources.getResourceAsReader(resource);
			sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return sqlMap;
	}

	/**
	 * 插入一条记录
	 * 
	 * @param
	 * @return
	 */
	public static void insert() {
		SqlMapClient sqlMap = getSqlMapClient();
		try {
			sqlMap.startTransaction();
			User user = new User();
			user.setName("insert1");
			user.setDate(new Date());
			sqlMap.insert("User.insertUser", user);
			sqlMap.commitTransaction();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 将第一条记录的信息更新
	 * 
	 * @param
	 * @return
	 */
	public static void update() {
		SqlMapClient sqlMap = getSqlMapClient();
		try {
			sqlMap.startTransaction();
			User user = (User)sqlMap.queryForObject("User.getById", "1");
			user.setName("update1");
			sqlMap.update("User.updateUser", user);
			sqlMap.commitTransaction();
		} catch (SQLException e) {
			e.printStackTrace();
		} finally {
			try {
				sqlMap.endTransaction();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 删除id最大的记录
	 * 
	 * @param
	 * @return
	 */
	public static void delete() {
		SqlMapClient sqlMap = getSqlMapClient();
		try {
			sqlMap.startTransaction();
			String maxId = sqlMap.queryForObject("User.getMaxId", null).toString();
			sqlMap.delete("User.deleteUser", maxId);
			sqlMap.commitTransaction();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 根据name查询User为Map的List
	 * 
	 * @param
	 * @return List
	 */
	public static List getUser() {
		SqlMapClient sqlMap = getSqlMapClient();
		List<User> user = null;
		try {
			sqlMap.startTransaction();
			HashMap params = new HashMap();
			params.put("name", "%liulu%");
			user = sqlMap.queryForList("User.getUser", params);
			sqlMap.commitTransaction();
		} catch (SQLException e) {
			e.printStackTrace();
		} finally {
			try {
				sqlMap.endTransaction();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		return user;
	}

	/**
	 * 查询各个字段的最大值(一般用于统计，此处演示使用方法)
	 * 
	 * @param
	 * @return
	 */
	public static void getMax() {
		SqlMapClient sqlMap = getSqlMapClient();
		try {
			sqlMap.startTransaction();
			Map search = (HashMap) sqlMap.queryForObject("User.getMax", null);
			System.out.println(search.get("id").toString() + "\n"
					+ search.get("name").toString() + "\n"
					+ search.get("date").toString());
			sqlMap.commitTransaction();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 通过主键查找,返回user
	 * 
	 * @param
	 * @return
	 */
	public static void getByPK() {
		SqlMapClient sqlMap = getSqlMapClient();
		User user = new User();
		try {
			sqlMap.startTransaction();
			user.setId(1);
			user = (User) sqlMap.queryForObject("User.getByPK", user);
			System.out.println(user.getId() + "\n" + user.getName() + "\n"
					+ user.getDate());
			sqlMap.commitTransaction();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		//insert();
		//update();
		//delete();

		List<User> user = getUser();
		for (User o : user) {
			System.out.println("id:" + o.getId() + "\nname:" + o.getName()
					+ "\nDate:" + o.getDate() + "\n------------");
		}
		//getMax();
		//getByPK();
	}
}

所有的方法都是静态的，可以分别对映射方法进行测试。

下面使用的是单元测试对iBatis来测试，使用了dbunit这个开源项目。
首先，要为单元测试准备数据。使用DbUnit，我们可以用XML文件来准备测试数据集。
t_user对应表名
id，name，date分别对应列名

user_seed.xml
代码

<?xml version="1.0" encoding="GBK"?>
<dataset>
    <t_user id="1"
    	name="liulu"
        date="2007-01-01"/>
    
    <t_user id="2"
    	name="liulu2"
        date="2007-03-15"/>
        
	<t_user id="3"
    	name="liulu3"
        date="2007-03-18"/>
</dataset>

方便测试，首先为SqlMap的单元测试编写一个抽象的测试基类

package com.javaeye.liulu.test;

import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Properties;

import javax.sql.DataSource;

import org.dbunit.DatabaseTestCase;
import org.dbunit.database.DatabaseConnection;
import org.dbunit.database.IDatabaseConnection;

import com.ibatis.common.resources.Resources;
import com.ibatis.db.util.ScriptRunner;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;

public abstract class BaseSqlMapTest extends DatabaseTestCase {
    protected static SqlMapClient sqlMap;

    protected IDatabaseConnection getConnection() throws Exception {
        return new DatabaseConnection(getJdbcConnection());
    }
    protected void setUp() throws Exception {
        super.setUp();
        init();
    }
    protected void tearDown() throws Exception {
        super.tearDown();
        getConnection().close();
        if (sqlMap != null) {
            DataSource ds = sqlMap.getDataSource();
            Connection conn = ds.getConnection();
            conn.close();
        }
    }
    protected void init() throws Exception {
        initSqlMap("com/javaeye/liulu/maps/SqlMapConfig.xml", null);
    }
    protected SqlMapClient getSqlMapClient() {
        return sqlMap;
    }
    protected void initSqlMap(String configFile, Properties props)
            throws Exception {
        Reader reader = Resources.getResourceAsReader(configFile);
        sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader, props);
        reader.close();
    }
    protected void initScript(String script) throws Exception {
        DataSource ds = sqlMap.getDataSource();
        Connection conn = ds.getConnection();
        
        Reader reader = Resources.getResourceAsReader(script);
        ScriptRunner runner = new ScriptRunner();
        runner.setStopOnError(false);
        runner.setLogWriter(null);
        runner.setErrorLogWriter(null);

        runner.runScript(conn, reader);
        conn.commit();
        conn.close();
        reader.close();
    }
    private Connection getJdbcConnection() throws Exception {
    	/*
        Properties props = new Properties();
        props.load(Resources.getResourceAsStream("properties/database.properties"));
        Class driver = Class.forName(props.getProperty("driver"));
        Connection conn = DriverManager.getConnection(props.getProperty("url"), 
                props.getProperty("username"), props.getProperty("password"));
                */
    	Class driver = Class.forName("com.mysql.jdbc.Driver");
    	Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/ibatis_schema","root","1234");
        return conn;
    }
}

    发表时间：2007-03-27   收藏 < > 猎头职位: 北京: ITeye网站诚聘产品交互设计 相关文章:  
■关于jdk5范型写的dao的疑问
■IBatis简单实现（附主键自动生成）
■iabtis 测试通过的例子

推荐群组: DI
更多相关推荐 相对Hibernate和Apache OJB 等“一站式”ORM解决方案而言，ibatis 是一种“半
自动化”的ORM实现。
所谓“半自动”，可能理解上有点生涩。纵观目前主流的ORM，无论Hibernate 还是
Apache OJB，都对数据库结构提供了较为完整的封装，提供了从POJO 到数据库表的全
套映射机制。程序员往往只需定义好了POJO 到数据库表的映射关系，即可通过Hibernate
或者OJB 提供的方法完成持久层操作。程序员甚至不需要对SQL 的熟练掌握，
Hibernate/OJB 会根据制定的存储逻辑，自动生成对应的SQL 并调用JDBC 接口加以执
行。 ----摘自官方资料的一段话

iBatis是一种很好的解决方案，使用起来很灵活，参考一些网络中的资料我也想把自己的使用过程写下来，如有错误希望指正。

环境：JDK1.5+Eclipse3.2  使用时仅需要在Eclipse中导入项目。

首先是表结构, 提供了两种数据库的支持分别为MySQL与hsqldb，可以根据实际情况选择使用。以MySQL为例：

Java代码 
1.create database if not exists `ibatis_schema`;  
2. 
3.USE `ibatis_schema`;  
4. 
5.drop table if exists `t_user`;  
6. 
7.CREATE TABLE `t_user` (  
8.  `id` int(12) NOT NULL auto_increment,  
9.  `name` varchar(50) default NULL,  
10.  `date` date default NULL,  
11.  PRIMARY KEY  (`id`)  
12.) ENGINE=InnoDB DEFAULT CHARSET=GBK;  
13. 
14.Insertinto  `t_user`(name,date) values('liulu','2007-03-15'),('liulu2','2007-03-15'),('liulu3','2007-03-15'); 
create database if not exists `ibatis_schema`;

USE `ibatis_schema`;

drop table if exists `t_user`;

CREATE TABLE `t_user` (
  `id` int(12) NOT NULL auto_increment,
  `name` varchar(50) default NULL,
  `date` date default NULL,
  PRIMARY KEY  (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=GBK;

Insertinto `t_user`(name,date) values('liulu','2007-03-15'),('liulu2','2007-03-15'),('liulu3','2007-03-15');

然后是iBatis的配置文件 SqlMapConfig.xml
这里进行数据源的配置以及一些参数的设置和优化

Java代码 
1.<?xml version="1.0" encoding="UTF-8" ?>  
2. 
3.<!DOCTYPE sqlMapConfig PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN" 
4.    "http://ibatis.apache.org/dtd/sql-map-config-2.dtd">  
5. 
6.<sqlMapConfig>  
7. 
8.    <settings cacheModelsEnabled="true" useStatementNamespaces="true" />  
9.    <transactionManager type="JDBC">  
10.        <dataSource type="SIMPLE">  
11.            <property name="JDBC.Driver" value="com.mysql.jdbc.Driver" />  
12.            <property name="JDBC.ConnectionURL" value="jdbc:mysql://localhost/ibatis_schema" />  
13.            <property name="JDBC.Username" value="root" />  
14.            <property name="JDBC.Password" value="1234" />  
15.        </dataSource>  
16.    </transactionManager>  
17.      
18.    <sqlMap resource="com/javaeye/liulu/maps/User.xml" />  
19.</sqlMapConfig> 
<?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>

<settings cacheModelsEnabled="true" useStatementNamespaces="true" />
<transactionManager type="JDBC">
<dataSource type="SIMPLE">
<property name="JDBC.Driver" value="com.mysql.jdbc.Driver" />
<property name="JDBC.ConnectionURL" value="jdbc:mysql://localhost/ibatis_schema" />
<property name="JDBC.Username" value="root" />
<property name="JDBC.Password" value="1234" />
</dataSource>
</transactionManager>

<sqlMap resource="com/javaeye/liulu/maps/User.xml" />
</sqlMapConfig>

User.java就是domain了，是映射的对象。

Java代码 
1.package com.javaeye.liulu.domain;  
2. 
3.import java.io.Serializable;  
4.import java.util.Date;  
5. 
6.public class User implements Serializable{  
7.    private int id;  
8.    private String name;  
9.    private Date date;  
10.    public Date getDate() {  
11.        return date;  
12.    }  
13.    public void setDate(Date date) {  
14.        this.date = date;  
15.    }  
16.    public int getId() {  
17.        return id;  
18.    }  
19.    public void setId(int id) {  
20.        this.id = id;  
21.    }  
22.    public String getName() {  
23.        return name;  
24.    }  
25.    public void setName(String name) {  
26.        this.name = name;  
27.    }  
28.} 
package com.javaeye.liulu.domain;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable{
private int id;
private String name;
private Date date;
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}

下面是比较重要的SQL Map XML映射文件，所有方法都在这里。
User.xml

Java代码 
1.<?xml version="1.0" encoding="UTF-8"?>  
2.<!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN" 
3."http://www.ibatis.com/dtd/sql-map-2.dtd">  
4. 
5.<sqlMap namespace="User">  
6.    <typeAlias alias="UserObject" type="com.javaeye.liulu.domain.User" />  
7.    <resultMap id="userResult" class="UserObject">  
8.        <result property="id" column="id" jdbcType="NUMBER" />  
9.        <result property="name" column="name" jdbcType="VARCHAR2" />  
10.        <result property="date" column="date" jdbcType="DATE" />  
11.    </resultMap>  
12. 
13.    <select id="getByPK" resultMap="userResult" parameterClass="UserObject">  
14.        <![CDATA[   
15.        select  
16.          id,  
17.          name,   
18.          date   
19.        from t_user   
20.        where id = #id#   
21.        ]]>  
22.    </select>  
23.      
24.    <select id="getById" resultMap="userResult" parameterClass="java.lang.String">  
25.        <![CDATA[   
26.        select  
27.          id,  
28.          name,   
29.          date   
30.        from t_user   
31.        where id = $String$  
32.        ]]>  
33.    </select>  
34. 
35.    <sql id="Dy_SC">  
36.        <dynamic prepend="WHERE">  
37.            <isNotNull prepend="AND" property="id">id like #id#</isNotNull>  
38.            <isNotNull prepend="AND" property="name">name like #name#</isNotNull>  
39.        </dynamic>  
40.    </sql>  
41. 
42.    <select id="getUser" resultMap="userResult">  
43.        <![CDATA[   
44.        select  
45.          id,  
46.          name,   
47.          date   
48.        from t_user   
49.        ]]>  
50.        <include refid="Dy_SC" />  
51.    </select>  
52. 
53.    <insert id="insertUser" parameterClass="UserObject">  
54.        INSERT INTO t_user (name,date) VALUES (#name#,#date#)  
55.    </insert>  
56.      
57.    <insert id="insertUserTest" parameterClass="UserObject">  
58.        INSERT INTO t_user (id,name,date) VALUES (#id#,#name#,#date#)  
59.    </insert>  
60. 
61.    <update id="updateUser" parameterClass="UserObject">  
62.        <![CDATA[   
63.        UPDATE t_user   
64.        SET    
65.          name=#name#,   
66.          date=#date#   
67.        WHERE id = #id#  
68.        ]]>  
69.    </update>  
70. 
71.    <delete id="deleteUser" parameterClass="java.lang.String">  
72.        delete from t_user where id=#value#  
73.    </delete>  
74. 
75.    <statement id="getMaxId" resultClass="java.lang.Integer">  
76.        select Max(id) from t_user  
77.    </statement>  
78. 
79.    <statement id="getMax" resultClass="java.util.HashMap">  
80.        select Max(id) as id,Max(name) as name,Max(date) as date from t_user  
81.    </statement>  
82. 
83.</sqlMap> 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN"
"http://www.ibatis.com/dtd/sql-map-2.dtd">

<sqlMap namespace="User">
<typeAlias alias="UserObject" type="com.javaeye.liulu.domain.User" />
<resultMap id="userResult" class="UserObject">
<result property="id" column="id" jdbcType="NUMBER" />
<result property="name" column="name" jdbcType="VARCHAR2" />
<result property="date" column="date" jdbcType="DATE" />
</resultMap>

<select id="getByPK" resultMap="userResult" parameterClass="UserObject">
<![CDATA[
select
  id,
  name,
  date
from t_user
where id = #id#
]]>
</select>

<select id="getById" resultMap="userResult" parameterClass="java.lang.String">
<![CDATA[
select
  id,
  name,
  date
from t_user
where id = $String$
]]>
</select>

<sql id="Dy_SC">
<dynamic prepend="WHERE">
<isNotNull prepend="AND" property="id">id like #id#</isNotNull>
<isNotNull prepend="AND" property="name">name like #name#</isNotNull>
</dynamic>
</sql>

<select id="getUser" resultMap="userResult">
<![CDATA[
select
  id,
  name,
  date
from t_user
]]>
<include refid="Dy_SC" />
</select>

<insert id="insertUser" parameterClass="UserObject">
INSERT INTO t_user (name,date) VALUES (#name#,#date#)
</insert>

<insert id="insertUserTest" parameterClass="UserObject">
INSERT INTO t_user (id,name,date) VALUES (#id#,#name#,#date#)
</insert>

<update id="updateUser" parameterClass="UserObject">
<![CDATA[
UPDATE t_user
SET 
  name=#name#,
  date=#date#
WHERE id = #id#
]]>
</update>

<delete id="deleteUser" parameterClass="java.lang.String">
delete from t_user where id=#value#
</delete>

<statement id="getMaxId" resultClass="java.lang.Integer">
select Max(id) from t_user
</statement>

<statement id="getMax" resultClass="java.util.HashMap">
select Max(id) as id,Max(name) as name,Max(date) as date from t_user
</statement>

</sqlMap>

这样就可以来测试了，测试也使用了两种方法，先使用一个普通应用程序来测试一下程序的运行好了。

Java代码 
1.package com.javaeye.liulu;  
2. 
3.import java.io.Reader;  
4.import java.sql.Connection;  
5.import java.sql.DriverManager;  
6.import java.sql.SQLException;  
7.import java.util.Date;  
8.import java.util.HashMap;  
9.import java.util.List;  
10.import java.util.Map;  
11.import java.util.Properties;  
12. 
13.import com.ibatis.common.jdbc.ScriptRunner;  
14.import com.ibatis.common.resources.Resources;  
15.import com.ibatis.sqlmap.client.SqlMapClient;  
16.import com.ibatis.sqlmap.client.SqlMapClientBuilder;  
17.import com.javaeye.liulu.domain.User;  
18. 
19.public class Main {  
20. 
21.    //hsql初始化,对MySQL没有影响  
22.    static {  
23.        try {  
24.            Properties props = Resources.getResourceAsProperties("properties/database.properties");  
25.            String url = props.getProperty("url");  
26.            String driver = props.getProperty("driver");  
27.            String username = props.getProperty("username");  
28.            String password = props.getProperty("password");  
29.            if (url.equals("jdbc:hsqldb:mem:ibatisDemo")) {  
30.                Class.forName(driver).newInstance();  
31.                Connection conn = DriverManager.getConnection(url, username, password);  
32.                try {  
33.                    ScriptRunner runner = new ScriptRunner(conn, false, false);  
34.                    runner.setErrorLogWriter(null);  
35.                    runner.setLogWriter(null);  
36.                    runner.runScript(Resources.getResourceAsReader("ddl/hsql/ibatisdemo-hsqldb-schema.sql"));  
37.                    runner.runScript(Resources.getResourceAsReader("ddl/hsql/ibatisdemo-hsqldb-dataload.sql"));  
38.                } finally {  
39.                    conn.close();  
40.                }  
41.            }  
42.        } catch (Exception e) {  
43.            throw new RuntimeException("Description.  Cause: " + e, e);  
44.        }  
45.    }  
46. 
47.    /** 
48.     * 初始化iBatis获得一个SqlMapClient对象 
49.     *  
50.     * @param 
51.     * @return SqlMapClient 
52.     */ 
53.    public static SqlMapClient getSqlMapClient() {  
54.        String resource = "com/javaeye/liulu/maps/SqlMapConfig.xml";  
55.        SqlMapClient sqlMap = null;  
56.        try {  
57.            Reader reader = Resources.getResourceAsReader(resource);  
58.            sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader);  
59.        } catch (Exception e) {  
60.            e.printStackTrace();  
61.        }  
62.        return sqlMap;  
63.    }  
64. 
65.    /** 
66.     * 插入一条记录 
67.     *  
68.     * @param 
69.     * @return 
70.     */ 
71.    public static void insert() {  
72.        SqlMapClient sqlMap = getSqlMapClient();  
73.        try {  
74.            sqlMap.startTransaction();  
75.            User user = new User();  
76.            user.setName("insert1");  
77.            user.setDate(new Date());  
78.            sqlMap.insert("User.insertUser", user);  
79.            sqlMap.commitTransaction();  
80.        } catch (SQLException e) {  
81.            e.printStackTrace();  
82.        }  
83.    }  
84. 
85.    /** 
86.     * 将第一条记录的信息更新 
87.     *  
88.     * @param 
89.     * @return 
90.     */ 
91.    public static void update() {  
92.        SqlMapClient sqlMap = getSqlMapClient();  
93.        try {  
94.            sqlMap.startTransaction();  
95.            User user = (User)sqlMap.queryForObject("User.getById", "1");  
96.            user.setName("update1");  
97.            sqlMap.update("User.updateUser", user);  
98.            sqlMap.commitTransaction();  
99.        } catch (SQLException e) {  
100.            e.printStackTrace();  
101.        } finally {  
102.            try {  
103.                sqlMap.endTransaction();  
104.            } catch (SQLException e) {  
105.                e.printStackTrace();  
106.            }  
107.        }  
108.    }  
109. 
110.    /** 
111.     * 删除id最大的记录 
112.     *  
113.     * @param 
114.     * @return 
115.     */ 
116.    public static void delete() {  
117.        SqlMapClient sqlMap = getSqlMapClient();  
118.        try {  
119.            sqlMap.startTransaction();  
120.            String maxId = sqlMap.queryForObject("User.getMaxId", null).toString();  
121.            sqlMap.delete("User.deleteUser", maxId);  
122.            sqlMap.commitTransaction();  
123.        } catch (SQLException e) {  
124.            e.printStackTrace();  
125.        }  
126.    }  
127. 
128.    /** 
129.     * 根据name查询User为Map的List 
130.     *  
131.     * @param 
132.     * @return List 
133.     */ 
134.    public static List getUser() {  
135.        SqlMapClient sqlMap = getSqlMapClient();  
136.        List<User> user = null;  
137.        try {  
138.            sqlMap.startTransaction();  
139.            HashMap params = new HashMap();  
140.            params.put("name", "%liulu%");  
141.            user = sqlMap.queryForList("User.getUser", params);  
142.            sqlMap.commitTransaction();  
143.        } catch (SQLException e) {  
144.            e.printStackTrace();  
145.        } finally {  
146.            try {  
147.                sqlMap.endTransaction();  
148.            } catch (SQLException e) {  
149.                e.printStackTrace();  
150.            }  
151.        }  
152.        return user;  
153.    }  
154. 
155.    /** 
156.     * 查询各个字段的最大值(一般用于统计，此处演示使用方法) 
157.     *  
158.     * @param 
159.     * @return 
160.     */ 
161.    public static void getMax() {  
162.        SqlMapClient sqlMap = getSqlMapClient();  
163.        try {  
164.            sqlMap.startTransaction();  
165.            Map search = (HashMap) sqlMap.queryForObject("User.getMax", null);  
166.            System.out.println(search.get("id").toString() + "\n" 
167.                    + search.get("name").toString() + "\n" 
168.                    + search.get("date").toString());  
169.            sqlMap.commitTransaction();  
170.        } catch (SQLException e) {  
171.            e.printStackTrace();  
172.        }  
173.    }  
174. 
175.    /** 
176.     * 通过主键查找,返回user 
177.     *  
178.     * @param 
179.     * @return 
180.     */ 
181.    public static void getByPK() {  
182.        SqlMapClient sqlMap = getSqlMapClient();  
183.        User user = new User();  
184.        try {  
185.            sqlMap.startTransaction();  
186.            user.setId(1);  
187.            user = (User) sqlMap.queryForObject("User.getByPK", user);  
188.            System.out.println(user.getId() + "\n" + user.getName() + "\n" 
189.                    + user.getDate());  
190.            sqlMap.commitTransaction();  
191.        } catch (SQLException e) {  
192.            e.printStackTrace();  
193.        }  
194.    }  
195. 
196.    public static void main(String[] args) {  
197.        //insert();  
198.        //update();  
199.        //delete();  
200. 
201.        List<User> user = getUser();  
202.        for (User o : user) {  
203.            System.out.println("id:" + o.getId() + "\nname:" + o.getName()  
204.                    + "\nDate:" + o.getDate() + "\n------------");  
205.        }  
206.        //getMax();  
207.        //getByPK();  
208.    }  
209.} 
package com.javaeye.liulu;

import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import com.ibatis.common.jdbc.ScriptRunner;
import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
import com.javaeye.liulu.domain.User;

public class Main {

//hsql初始化,对MySQL没有影响
static {
try {
Properties props = Resources.getResourceAsProperties("properties/database.properties");
String url = props.getProperty("url");
String driver = props.getProperty("driver");
String username = props.getProperty("username");
String password = props.getProperty("password");
if (url.equals("jdbc:hsqldb:mem:ibatisDemo")) {
Class.forName(driver).newInstance();
Connection conn = DriverManager.getConnection(url, username, password);
try {
ScriptRunner runner = new ScriptRunner(conn, false, false);
runner.setErrorLogWriter(null);
runner.setLogWriter(null);
runner.runScript(Resources.getResourceAsReader("ddl/hsql/ibatisdemo-hsqldb-schema.sql"));
runner.runScript(Resources.getResourceAsReader("ddl/hsql/ibatisdemo-hsqldb-dataload.sql"));
} finally {
conn.close();
}
}
} catch (Exception e) {
throw new RuntimeException("Description.  Cause: " + e, e);
}
}

/**
* 初始化iBatis获得一个SqlMapClient对象
*
* @param
* @return SqlMapClient
*/
public static SqlMapClient getSqlMapClient() {
String resource = "com/javaeye/liulu/maps/SqlMapConfig.xml";
SqlMapClient sqlMap = null;
try {
Reader reader = Resources.getResourceAsReader(resource);
sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader);
} catch (Exception e) {
e.printStackTrace();
}
return sqlMap;
}

/**
* 插入一条记录
*
* @param
* @return
*/
public static void insert() {
SqlMapClient sqlMap = getSqlMapClient();
try {
sqlMap.startTransaction();
User user = new User();
user.setName("insert1");
user.setDate(new Date());
sqlMap.insert("User.insertUser", user);
sqlMap.commitTransaction();
} catch (SQLException e) {
e.printStackTrace();
}
}

/**
* 将第一条记录的信息更新
*
* @param
* @return
*/
public static void update() {
SqlMapClient sqlMap = getSqlMapClient();
try {
sqlMap.startTransaction();
User user = (User)sqlMap.queryForObject("User.getById", "1");
user.setName("update1");
sqlMap.update("User.updateUser", user);
sqlMap.commitTransaction();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
sqlMap.endTransaction();
} catch (SQLException e) {
e.printStackTrace();
}
}
}

/**
* 删除id最大的记录
*
* @param
* @return
*/
public static void delete() {
SqlMapClient sqlMap = getSqlMapClient();
try {
sqlMap.startTransaction();
String maxId = sqlMap.queryForObject("User.getMaxId", null).toString();
sqlMap.delete("User.deleteUser", maxId);
sqlMap.commitTransaction();
} catch (SQLException e) {
e.printStackTrace();
}
}

/**
* 根据name查询User为Map的List
*
* @param
* @return List
*/
public static List getUser() {
SqlMapClient sqlMap = getSqlMapClient();
List<User> user = null;
try {
sqlMap.startTransaction();
HashMap params = new HashMap();
params.put("name", "%liulu%");
user = sqlMap.queryForList("User.getUser", params);
sqlMap.commitTransaction();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
sqlMap.endTransaction();
} catch (SQLException e) {
e.printStackTrace();
}
}
return user;
}

/**
* 查询各个字段的最大值(一般用于统计，此处演示使用方法)
*
* @param
* @return
*/
public static void getMax() {
SqlMapClient sqlMap = getSqlMapClient();
try {
sqlMap.startTransaction();
Map search = (HashMap) sqlMap.queryForObject("User.getMax", null);
System.out.println(search.get("id").toString() + "\n"
+ search.get("name").toString() + "\n"
+ search.get("date").toString());
sqlMap.commitTransaction();
} catch (SQLException e) {
e.printStackTrace();
}
}

/**
* 通过主键查找,返回user
*
* @param
* @return
*/
public static void getByPK() {
SqlMapClient sqlMap = getSqlMapClient();
User user = new User();
try {
sqlMap.startTransaction();
user.setId(1);
user = (User) sqlMap.queryForObject("User.getByPK", user);
System.out.println(user.getId() + "\n" + user.getName() + "\n"
+ user.getDate());
sqlMap.commitTransaction();
} catch (SQLException e) {
e.printStackTrace();
}
}

public static void main(String[] args) {
//insert();
//update();
//delete();

List<User> user = getUser();
for (User o : user) {
System.out.println("id:" + o.getId() + "\nname:" + o.getName()
+ "\nDate:" + o.getDate() + "\n------------");
}
//getMax();
//getByPK();
}
}

所有的方法都是静态的，可以分别对映射方法进行测试。

下面使用的是单元测试对iBatis来测试，使用了dbunit这个开源项目。
首先，要为单元测试准备数据。使用DbUnit，我们可以用XML文件来准备测试数据集。
t_user对应表名
id，name，date分别对应列名

user_seed.xml

Java代码 
1.<?xml version="1.0" encoding="GBK"?>  
2.<dataset>  
3.    <t_user id="1" 
4.        name="liulu" 
5.        date="2007-01-01"/>  
6.      
7.    <t_user id="2" 
8.        name="liulu2" 
9.        date="2007-03-15"/>  
10.          
11.    <t_user id="3" 
12.        name="liulu3" 
13.        date="2007-03-18"/>  
14.</dataset> 
<?xml version="1.0" encoding="GBK"?>
<dataset>
    <t_user id="1"
    name="liulu"
        date="2007-01-01"/>
   
    <t_user id="2"
    name="liulu2"
        date="2007-03-15"/>
       
<t_user id="3"
    name="liulu3"
        date="2007-03-18"/>
</dataset>

方便测试，首先为SqlMap的单元测试编写一个抽象的测试基类

Java代码 

package com.javaeye.liulu.test;

import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Properties;

import javax.sql.DataSource;

import org.dbunit.DatabaseTestCase;
import org.dbunit.database.DatabaseConnection;
import org.dbunit.database.IDatabaseConnection;

import com.ibatis.common.resources.Resources;
import com.ibatis.db.util.ScriptRunner;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;

public abstract class BaseSqlMapTest extends DatabaseTestCase {
    protected static SqlMapClient sqlMap;

    protected IDatabaseConnection getConnection() throws Exception {
        return new DatabaseConnection(getJdbcConnection());
    }
    protected void setUp() throws Exception {
        super.setUp();
        init();
    }
    protected void tearDown() throws Exception {
        super.tearDown();
        getConnection().close();
        if (sqlMap != null) {
            DataSource ds = sqlMap.getDataSource();
            Connection conn = ds.getConnection();
            conn.close();
        }
    }
    protected void init() throws Exception {
        initSqlMap("com/javaeye/liulu/maps/SqlMapConfig.xml", null);
    }
    protected SqlMapClient getSqlMapClient() {
        return sqlMap;
    }
    protected void initSqlMap(String configFile, Properties props)
            throws Exception {
        Reader reader = Resources.getResourceAsReader(configFile);
        sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader, props);
        reader.close();
    }
    protected void initScript(String script) throws Exception {
        DataSource ds = sqlMap.getDataSource();
        Connection conn = ds.getConnection();
       
        Reader reader = Resources.getResourceAsReader(script);
        ScriptRunner runner = new ScriptRunner();
        runner.setStopOnError(false);
        runner.setLogWriter(null);
        runner.setErrorLogWriter(null);

        runner.runScript(conn, reader);
        conn.commit();
        conn.close();
        reader.close();
    }
    private Connection getJdbcConnection() throws Exception {
    /*
        Properties props = new Properties();
        props.load(Resources.getResourceAsStream("properties/database.properties"));
        Class driver = Class.forName(props.getProperty("driver"));
        Connection conn = DriverManager.getConnection(props.getProperty("url"),
                props.getProperty("username"), props.getProperty("password"));
                */
    Class driver = Class.forName("com.mysql.jdbc.Driver");
    Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/ibatis_schema","root","1234");
        return conn;
    }
}



package com.javaeye.liulu.test;
import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Properties;

import javax.sql.DataSource;

import org.dbunit.DatabaseTestCase;
import org.dbunit.database.DatabaseConnection;
import org.dbunit.database.IDatabaseConnection;

import com.ibatis.common.resources.Resources;
import com.ibatis.db.util.ScriptRunner;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;

public abstract class BaseSqlMapTest extends DatabaseTestCase {
    protected static SqlMapClient sqlMap;

    protected IDatabaseConnection getConnection() throws Exception {
        return new DatabaseConnection(getJdbcConnection());
    }
    protected void setUp() throws Exception {
        super.setUp();
        init();
    }
    protected void tearDown() throws Exception {
        super.tearDown();
        getConnection().close();
        if (sqlMap != null) {
            DataSource ds = sqlMap.getDataSource();
            Connection conn = ds.getConnection();
            conn.close();
        }
    }
    protected void init() throws Exception {
        initSqlMap("com/javaeye/liulu/maps/SqlMapConfig.xml", null);
    }
    protected SqlMapClient getSqlMapClient() {
        return sqlMap;
    }
    protected void initSqlMap(String configFile, Properties props)
            throws Exception {
        Reader reader = Resources.getResourceAsReader(configFile);
        sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader, props);
        reader.close();
    }
    protected void initScript(String script) throws Exception {
        DataSource ds = sqlMap.getDataSource();
        Connection conn = ds.getConnection();
       
        Reader reader = Resources.getResourceAsReader(script);
        ScriptRunner runner = new ScriptRunner();
        runner.setStopOnError(false);
        runner.setLogWriter(null);
        runner.setErrorLogWriter(null);

        runner.runScript(conn, reader);
        conn.commit();
        conn.close();
        reader.close();
    }
    private Connection getJdbcConnection() throws Exception {
    /*
        Properties props = new Properties();
        props.load(Resources.getResourceAsStream("properties/database.properties"));
        Class driver = Class.forName(props.getProperty("driver"));
        Connection conn = DriverManager.getConnection(props.getProperty("url"),
                props.getProperty("username"), props.getProperty("password"));
                */
    Class driver = Class.forName("com.mysql.jdbc.Driver");
    Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/ibatis_schema","root","1234");
        return conn;
    }
}

然后为每个SqlMap映射文件编写一个测试用例，extends上面的抽象类
代码

package com.javaeye.liulu.test;

import java.io.Reader;
import java.util.Date;
import java.util.HashMap;
import java.util.List;

import org.dbunit.dataset.IDataSet;
import org.dbunit.dataset.xml.FlatXmlDataSet;
import org.dbunit.operation.DatabaseOperation;

import com.ibatis.common.resources.Resources;
import com.javaeye.liulu.domain.User;

public class UserTest extends BaseSqlMapTest {

	protected IDataSet getDataSet() throws Exception {
		Reader reader = Resources.getResourceAsReader("com/javaeye/liulu/test/user_seed.xml");
		return new FlatXmlDataSet(reader);
	}
	
	public void testGetByPK() throws Exception {
		User user = new User();
		user.setId(1);
		user = (User) sqlMap.queryForObject("User.getByPK", user);
		assertNotNull(user);
		assertEquals(user.getId(), 1);
		assertEquals(user.getName(), "liulu");
		assertEquals(user.getDate().getDay(), 1);
	}
	
	public void testGetUser() throws Exception {
		List users = null;
		HashMap params = new HashMap();
		params.put("name", "%liulu%");
		users = (List) sqlMap.queryForList("User.getUser", params);
		assertEquals(users.size(),3);
	}
	
	public void testInsertUser() throws Exception {
		User user = new User();
		user.setId(4);
		user.setName("insert1");
		user.setDate(new Date());
		sqlMap.insert("User.insertUserTest", user);
		
		User user2 = new User();
		user2.setId(4);
		user2 = (User) sqlMap.queryForObject("User.getById", "4");
		assertEquals(user.getId(),user2.getId());
		assertEquals(user.getName(),user2.getName());
		
	}
	
	public void testUpdateUser() throws Exception {
		User user = (User)sqlMap.queryForObject("User.getById", "1");
		user.setName("liulu7");
		sqlMap.update("User.updateUser", user);
		User user2 = (User)sqlMap.queryForObject("User.getById", "1");
		assertEquals(user2.getName(),"liulu7");
	}
	
	public void testDeleteUser() throws Exception {
		int num = sqlMap.delete("User.deleteUser", "1");
		assertEquals(num,1);
	}
	
	public void testGetMaxId() throws Exception {
		int i =  (Integer)sqlMap.queryForObject("User.getMaxId", null);
		assertEquals(3,i);
	}
	
}

注意，其中测试insert时由于id为auto_increment，可能需要对测试数据中<dataset/>进行设置，网络中并未查询到相关的方法，所以在映射文件中加入了一个
Java代码

<insert id="insertUserTest" parameterClass="UserObject">
		INSERT INTO t_user (id,name,date) VALUES (#id#,#name#,#date#)
	</insert>

用例测试中测试的是insertUserTest，并非insertUser，请注意。

到这里就结束了，demo比较简单，希望能给大家带来帮助。

参考：
http://ibatis.apache.org/
http://hsqldb.org/
http://www.dbunit.org/