Spring+ibatis 应用实例
2015-11-25 17:27
316 查看
转 http://blog.csdn.net/randyjiawenjie/article/details/7529314
最近研究了一下Spring + iBATIS。发现看别人的例子是一回事，自己写一个完整的应用又是另外一回事。自己受够了网上贴的一知半解的代码。
iBATIS是一个持久化框架，封面了sql过程，虽然sql语句需要自己写。另外，我觉得对于初学者来说，完整的示例真的很重要，不然不知道文件是如果放置的。
所有的第三包都需要加上，spring、ibatis.-2.3.3.720.jar、sqlijdbc.jar、oscache-2.4.jar、commons-pool-1.3.jar、commons-dbcp-1.4.jar,mysql-connector-5.0.5.jar。不然运行的时候都要报错。
xml文件的位置也很关键，因为访问配置文件需要确定他的路径。
有三个包：
1.bean。
bean包封装了POJO对象Ibatis，如下：
[java]
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package com.tmall.bean; public class Ibatis { private String id; private String name; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Ibatis(){ } public Ibatis(String id, String name) { super(); this.id = id; this.name = name; } }
2. Dao包
Dao里面有一个Dao和DaoImp。Dao是一个接口，DaoImp实现了Dao的接口。
Dao.java如下：
[java]
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package com.tmall.dao; import java.util.List; import com.tmall.bean.Ibatis;; public interface Dao { public List<Ibatis> getList(); public Ibatis getByName(String name); public Ibatis getById(String id); public void insert(Ibatis ibatis); public void delete(String id); public void update(Ibatis ibatis); }
DaoImp.java如下
[java]
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package com.tmall.dao; import java.util.List; import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport; import com.tmall.bean.Ibatis; public class DaoImp extends SqlMapClientDaoSupport implements Dao { public void delete(String id) { getSqlMapClientTemplate().delete("deleteUsers", id); } public Ibatis getById(String id) { return (Ibatis)getSqlMapClientTemplate().queryForObject("getUsersById",id); } public Ibatis getByName(String name) { return (Ibatis)getSqlMapClientTemplate().queryForObject("getUsersByName",name); } @SuppressWarnings("unchecked") public List<Ibatis> getList() { return getSqlMapClientTemplate().queryForList("getAllUsers",null); } public void insert(Ibatis ibatis) { getSqlMapClientTemplate().insert("insertUsers",ibatis); } public void update(Ibatis ibatis) { getSqlMapClientTemplate().update("updateUsers", ibatis); } }
除此之外，关键的问题还有三个配置文件。applicationcontext.xml、ibatis.xml、sqlMapConfig.xml。
applicationContext.xml文件是spring的配置文件，如下：
[java]
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ibatis.xml内容如下：
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<?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 type="com.tmall.bean.Ibatis" alias="user"/> <resultMap id="ibatisTest" class="user" > <result column="id" property="id" jdbcType="VARCHAR" /> <result column="name" property="name" jdbcType="VARCHAR" /> </resultMap> <!-- 获得全查询列表 --> <select id="getAllUsers" resultMap="ibatisTest"> select * from Ibatis </select> <!-- 根据用户名获得用户对象 --> <select id="getUsersByName" resultMap="ibatisTest"> select * from Ibatis where name=#value# </select> <!-- 根据id获得用户对象 --> <select id="getUsersById" resultMap="ibatisTest"> select * from Ibatis where id=#value# </select> <!-- 新增用户对象 --> <insert id="insertUsers" parameterClass="user"> insert into ibatis (id,name) values (#id#,#name#) </insert> <!-- 删除用户对象 --> <delete id="deleteUsers"> delete from ibatis where id=#value# </delete> <!-- 更新用户对象 --> <delete id="updateUsers" parameterClass="user"> update ibatis set name=#name# where id=#id# </delete> </sqlMap>
sqlMapConfig.xml文件如下：
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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" "http://www.ibatis.com/dtd/sql-map-config-2.dtd"> <sqlMapConfig> <sqlMap resource="Ibatis.xml" /> </sqlMapConfig>
测试语句
[java]
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package com.tmall.test;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.tmall.bean.Ibatis;
import com.tmall.dao.Dao;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
Dao dao = (Dao)context.getBean("DaoImp");
dao.insert(new Ibatis("3","new3"));
Ibatis ibatis3 = dao.getById("2");
ibatis3.setName("new7");
dao.update(ibatis3);
// testDAOImpl.delete("3");
System.out.println("获得全查询列表");
List<Ibatis> result=new ArrayList<Ibatis>();
result = dao.getList();
for (Iterator<Ibatis> iter = result.iterator(); iter.hasNext();) {
Ibatis element = (Ibatis) iter.next();
System.out.println(element.getName());
}
}
}
别忘了在mysql语句中建立一个表，然后通过mysql query这个工具来看结果。
转 http://blog.csdn.net/randyjiawenjie/article/details/7529314
最近研究了一下Spring + iBATIS。发现看别人的例子是一回事，自己写一个完整的应用又是另外一回事。自己受够了网上贴的一知半解的代码。
iBATIS是一个持久化框架，封面了sql过程，虽然sql语句需要自己写。另外，我觉得对于初学者来说，完整的示例真的很重要，不然不知道文件是如果放置的。
所有的第三包都需要加上，spring、ibatis.-2.3.3.720.jar、sqlijdbc.jar、oscache-2.4.jar、commons-pool-1.3.jar、commons-dbcp-1.4.jar,mysql-connector-5.0.5.jar。不然运行的时候都要报错。
xml文件的位置也很关键，因为访问配置文件需要确定他的路径。
有三个包：
1.bean。
bean包封装了POJO对象Ibatis，如下：
[java]
view plaincopyprint?
package com.tmall.bean; public class Ibatis { private String id; private String name; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Ibatis(){ } public Ibatis(String id, String name) { super(); this.id = id; this.name = name; } }
package com.tmall.bean;
public class Ibatis {
private String id;
private String name;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Ibatis(){
}
public Ibatis(String id, String name) {
super();
this.id = id;
this.name = name;
}
}2. Dao包
Dao里面有一个Dao和DaoImp。Dao是一个接口，DaoImp实现了Dao的接口。
Dao.java如下：
[java]
view plaincopyprint?
package com.tmall.dao; import java.util.List; import com.tmall.bean.Ibatis;; public interface Dao { public List<Ibatis> getList(); public Ibatis getByName(String name); public Ibatis getById(String id); public void insert(Ibatis ibatis); public void delete(String id); public void update(Ibatis ibatis); }
package com.tmall.dao;
import java.util.List;
import com.tmall.bean.Ibatis;;
public interface Dao {
public List<Ibatis> getList();
public Ibatis getByName(String name);
public Ibatis getById(String id);
public void insert(Ibatis ibatis);
public void delete(String id);
public void update(Ibatis ibatis);
}DaoImp.java如下
[java]
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package com.tmall.dao; import java.util.List; import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport; import com.tmall.bean.Ibatis; public class DaoImp extends SqlMapClientDaoSupport implements Dao { public void delete(String id) { getSqlMapClientTemplate().delete("deleteUsers", id); } public Ibatis getById(String id) { return (Ibatis)getSqlMapClientTemplate().queryForObject("getUsersById",id); } public Ibatis getByName(String name) { return (Ibatis)getSqlMapClientTemplate().queryForObject("getUsersByName",name); } @SuppressWarnings("unchecked") public List<Ibatis> getList() { return getSqlMapClientTemplate().queryForList("getAllUsers",null); } public void insert(Ibatis ibatis) { getSqlMapClientTemplate().insert("insertUsers",ibatis); } public void update(Ibatis ibatis) { getSqlMapClientTemplate().update("updateUsers", ibatis); } }
package com.tmall.dao;
import java.util.List;
import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;
import com.tmall.bean.Ibatis;
public class DaoImp extends SqlMapClientDaoSupport implements Dao {
public void delete(String id) {
getSqlMapClientTemplate().delete("deleteUsers", id);
}
public Ibatis getById(String id) {
return (Ibatis)getSqlMapClientTemplate().queryForObject("getUsersById",id);
}
public Ibatis getByName(String name) {
return (Ibatis)getSqlMapClientTemplate().queryForObject("getUsersByName",name);
}
@SuppressWarnings("unchecked")
public List<Ibatis> getList() {
return getSqlMapClientTemplate().queryForList("getAllUsers",null);
}
public void insert(Ibatis ibatis) {
getSqlMapClientTemplate().insert("insertUsers",ibatis);
}
public void update(Ibatis ibatis) {
getSqlMapClientTemplate().update("updateUsers", ibatis);
}
}除此之外，关键的问题还有三个配置文件。applicationcontext.xml、ibatis.xml、sqlMapConfig.xml。
applicationContext.xml文件是spring的配置文件，如下：
[java]
view plaincopyprint?
</pre><div class="dp-highlighter bg_html"><div class="bar"><div class="tools"><strong>[html]</strong> <a target=_blank title="view plain" class="ViewSource" href="http://blog.csdn.net/randyjiawenjie/article/details/7529314#">view plain</a><a target=_blank title="copy" class="CopyToClipboard" href="http://blog.csdn.net/randyjiawenjie/article/details/7529314#">copy</a><a target=_blank title="print" class="PrintSource" href="http://blog.csdn.net/randyjiawenjie/article/details/7529314#">print</a><a target=_blank title="?" class="About" href="http://blog.csdn.net/randyjiawenjie/article/details/7529314#">?</a></div></div><ol class="dp-xml"><li class="alt"><span><span class="tag"><?</span><span class="tag-name">xml</span><span> </span><span class="attribute">version</span><span>=</span><span class="attribute-value">"1.0"</span><span> </span><span class="attribute">encoding</span><span>=</span><span class="attribute-value">"UTF-8"</span><span class="tag">?></span><span> </span></span></li><li><span><span class="tag"><</span><span class="tag-name">beans</span><span> </span></span></li><li class="alt"><span> <span class="attribute">xmlns</span><span>=</span><span class="attribute-value">"http://www.springframework.org/schema/beans"</span><span> </span></span></li><li><span> <span class="attribute">xmlns:xsi</span><span>=</span><span class="attribute-value">"http://www.w3.org/2001/XMLSchema-instance"</span><span> </span></span></li><li class="alt"><span> <span class="attribute">xsi:schemaLocation</span><span>=</span><span class="attribute-value">"http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"</span><span class="tag">></span><span> </span></span></li><li><span> </span></li><li class="alt"><span> </span></li><li><span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"dataSource"</span><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.apache.commons.dbcp.BasicDataSource"</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"driverClassName"</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>com.mysql.jdbc.Driver</span><span class="tag"></</span><span class="tag-name">value</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"></</span><span class="tag-name">property</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"username"</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>root</span><span class="tag"></</span><span class="tag-name">value</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"></</span><span class="tag-name">property</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"password"</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>123456</span><span class="tag"></</span><span class="tag-name">value</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"></</span><span class="tag-name">property</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"url"</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>jdbc:mysql://localhost:3306/test</span><span class="tag"></</span><span class="tag-name">value</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"></</span><span class="tag-name">property</span><span class="tag">></span><span> </span></span></li><li class="alt"><span><span class="tag"></</span><span class="tag-name">bean</span><span class="tag">></span><span> </span></span></li><li><span> </span></li><li class="alt"><span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"sqlMapClient"</span><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"org.springframework.orm.ibatis.SqlMapClientFactoryBean"</span><span class="tag">></span><span> </span></span></li><li><span> <span class="comments"><!-- 此处应注入ibatis配置文件，而非sqlMap文件，否则会出现“there is no statement.....异常” --></span><span> </span></span></li><li class="alt"><span> <span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"configLocation"</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>sqlMapConfig.xml</span><span class="tag"></</span><span class="tag-name">value</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"></</span><span class="tag-name">property</span><span class="tag">></span><span> </span></span></li><li><span> </span></li><li class="alt"><span><span class="tag"></</span><span class="tag-name">bean</span><span class="tag">></span><span> </span></span></li><li><span> </span></li><li class="alt"><span><span class="tag"><</span><span class="tag-name">bean</span><span> </span><span class="attribute">id</span><span>=</span><span class="attribute-value">"DaoImp"</span><span> </span><span class="attribute">class</span><span>=</span><span class="attribute-value">"com.tmall.dao.DaoImp"</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"dataSource"</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"><</span><span class="tag-name">ref</span><span> </span><span class="attribute">bean</span><span>=</span><span class="attribute-value">"dataSource"</span><span class="tag">/></span><span> </span></span></li><li><span> <span class="tag"></</span><span class="tag-name">property</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> <span class="tag"><</span><span class="tag-name">property</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"sqlMapClient"</span><span class="tag">></span><span> </span></span></li><li><span> <span class="tag"><</span><span class="tag-name">ref</span><span> </span><span class="attribute">bean</span><span>=</span><span class="attribute-value">"sqlMapClient"</span><span class="tag">/></span><span> </span></span></li><li class="alt"><span> <span class="tag"></</span><span class="tag-name">property</span><span class="tag">></span><span> </span></span></li><li><span><span class="tag"></</span><span class="tag-name">bean</span><span class="tag">></span><span> </span></span></li><li class="alt"><span> </span></li><li><span><span class="tag"></</span><span class="tag-name">beans</span><span class="tag">></span><span> </span></span></li></ol></div><pre class="html" style="display: none;" name="code"><?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName"> <value>com.mysql.jdbc.Driver</value> </property> <property name="username"> <value>root</value> </property> <property name="password"> <value>123456</value> </property> <property name="url"> <value>jdbc:mysql://localhost:3306/test</value> </property> </bean> <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"> <!-- 此处应注入ibatis配置文件，而非sqlMap文件，否则会出现“there is no statement.....异常” --> <property name="configLocation"> <value>sqlMapConfig.xml</value> </property> </bean> <bean id="DaoImp" class="com.tmall.dao.DaoImp"> <property name="dataSource"> <ref bean="dataSource"/> </property> <property name="sqlMapClient"> <ref bean="sqlMapClient"/> </property> </bean> </beans>
ibatis.xml内容如下：
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<?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 type="com.tmall.bean.Ibatis" alias="user"/> <resultMap id="ibatisTest" class="user" > <result column="id" property="id" jdbcType="VARCHAR" /> <result column="name" property="name" jdbcType="VARCHAR" /> </resultMap> <!-- 获得全查询列表 --> <select id="getAllUsers" resultMap="ibatisTest"> select * from Ibatis </select> <!-- 根据用户名获得用户对象 --> <select id="getUsersByName" resultMap="ibatisTest"> select * from Ibatis where name=#value# </select> <!-- 根据id获得用户对象 --> <select id="getUsersById" resultMap="ibatisTest"> select * from Ibatis where id=#value# </select> <!-- 新增用户对象 --> <insert id="insertUsers" parameterClass="user"> insert into ibatis (id,name) values (#id#,#name#) </insert> <!-- 删除用户对象 --> <delete id="deleteUsers"> delete from ibatis where id=#value# </delete> <!-- 更新用户对象 --> <delete id="updateUsers" parameterClass="user"> update ibatis set name=#name# where id=#id# </delete> </sqlMap>
<?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 type="com.tmall.bean.Ibatis" alias="user"/> <resultMap id="ibatisTest" class="user" > <result column="id" property="id" jdbcType="VARCHAR" /> <result column="name" property="name" jdbcType="VARCHAR" /> </resultMap> <!-- 获得全查询列表 --> <select id="getAllUsers" resultMap="ibatisTest"> select * from Ibatis </select> <!-- 根据用户名获得用户对象 --> <select id="getUsersByName" resultMap="ibatisTest"> select * from Ibatis where name=#value# </select> <!-- 根据id获得用户对象 --> <select id="getUsersById" resultMap="ibatisTest"> select * from Ibatis where id=#value# </select> <!-- 新增用户对象 --> <insert id="insertUsers" parameterClass="user"> insert into ibatis (id,name) values (#id#,#name#) </insert> <!-- 删除用户对象 --> <delete id="deleteUsers"> delete from ibatis where id=#value# </delete> <!-- 更新用户对象 --> <delete id="updateUsers" parameterClass="user"> update ibatis set name=#name# where id=#id# </delete> </sqlMap>
sqlMapConfig.xml文件如下：
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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" "http://www.ibatis.com/dtd/sql-map-config-2.dtd"> <sqlMapConfig> <sqlMap resource="Ibatis.xml" /> </sqlMapConfig>
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN" "http://www.ibatis.com/dtd/sql-map-config-2.dtd"> <sqlMapConfig> <sqlMap resource="Ibatis.xml" /> </sqlMapConfig>
测试语句
[java]
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package com.tmall.test;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.tmall.bean.Ibatis;
import com.tmall.dao.Dao;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
Dao dao = (Dao)context.getBean("DaoImp");
dao.insert(new Ibatis("3","new3"));
Ibatis ibatis3 = dao.getById("2");
ibatis3.setName("new7");
dao.update(ibatis3);
// testDAOImpl.delete("3");
System.out.println("获得全查询列表");
List<Ibatis> result=new ArrayList<Ibatis>();
result = dao.getList();
for (Iterator<Ibatis> iter = result.iterator(); iter.hasNext();) {
Ibatis element = (Ibatis) iter.next();
System.out.println(element.getName());
}
}
}
package com.tmall.test;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.tmall.bean.Ibatis;
import com.tmall.dao.Dao;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
Dao dao = (Dao)context.getBean("DaoImp");
dao.insert(new Ibatis("3","new3"));
Ibatis ibatis3 = dao.getById("2");
ibatis3.setName("new7");
dao.update(ibatis3);
// testDAOImpl.delete("3");
System.out.println("获得全查询列表");
List<Ibatis> result=new ArrayList<Ibatis>();
result = dao.getList();
for (Iterator<Ibatis> iter = result.iterator(); iter.hasNext();) {
Ibatis element = (Ibatis) iter.next();
System.out.println(element.getName());
}
}
}别忘了在mysql语句中建立一个表，然后通过mysql query这个工具来看结果。
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