ibatis用例

第一步，在數據庫中創建一個表，同時在代碼中相應的添加上和這張表數據預一一對應的類 如下

Java語言: Codee#21575

01 package com.foreverlin;
02 /*
03 * 數據表結構
04 */
05 public class Stu {
06
07     private int stuId;
08     private String name;
09     private String like;
10
11     public int getStuId() {
12         return stuId;
13     }
14     public void setStuId(int stuId) {
15         this.stuId = stuId;
16     }
17     public String getName() {
18         return name;
19     }
20     public void setName(String name) {
21         this.name = name;
22     }
23     public String getLike() {
24         return like;
25     }
26     public void setLike(String like) {
27         this.like = like;
28     }
29     @Override
30     public String toString() {
31         return "Stu [stuId=" + stuId + ", name=" + name + ", like=" + like + "]";
32     }
33
34 }

第二步，把相應的操作配上，面向接口編程哈

Java語言: Codee#21576

01 package com.foreverlin;
02
03 import java.util.List;
04
05 import org.springframework.stereotype.Repository;
06 /*
07 * 數據表操作接口
08 */
09 @Repository
10 public interface StuDao {
11     public void addStu(Stu stu);
12     public Stu getStuById(Integer id);
13     public Integer deleteStuById(Integer id);
14     public Integer updateStuById(Stu stu);
15     public List<Stu> queryAllStu();
16 }

Java語言: Codee#21577

01 package com.foreverlin;
02
03 import java.util.List;
04
05 import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;
06 /*
07 * 數據表操作實現
08 */
09 public class StuDaoImpl extends SqlMapClientDaoSupport implements StuDao {
10
11     @Override
12     public void addStu(Stu stu) {
13         getSqlMapClientTemplate().insert("StuDaoImpl.addStu", stu);
14     }
15
16     @Override
17     public Stu getStuById(Integer id) {
18         return (Stu) getSqlMapClientTemplate().queryForObject("StuDaoImpl.getStuById", id);
19     }
20
21     @Override
22     public Integer deleteStuById(Integer id) {
23         return getSqlMapClientTemplate().delete("StuDaoImpl.deleteStuById", id);
24     }
25
26     @Override
27     public Integer updateStuById(Stu stu) {
28         return getSqlMapClientTemplate().update("StuDaoImpl.updateStuById", stu);
29     }
30
31     @Override
32     @SuppressWarnings("unchecked")
33     public List<Stu> queryAllStu() {
34         return getSqlMapClientTemplate().queryForList("StuDaoImpl.queryAllStu");
35     }
36
37 }

第三步，開始要和配置文件打交道了，對於入門而言，這裏是最容易出問題的

首先我們來配置spring的applicationConfig.xml文件，這裏要添加入dataSource，transactionManager，sqlMapClient以及相應的操作對象的bean配置

各自的作用分別爲數據源(你數據庫的基本信息) 事物管理 ，存儲指定的映射文件，是操作數據庫的接口，其實主要就是配置上sqlMapConfig的文件路徑。

XML語言: Codee#21578

01 <?xml version="1.0" encoding="UTF-8"?>
02 <beans default-autowire="byName"
03     xmlns="http://www.springframework.org/schema/beans"
04     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
05     xmlns:p="http://www.springframework.org/schema/p"
06     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
07
08     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
09         <property name="driverClassName" value="com.mysql.jdbc.Driver" />
10         <property name="url" value="jdbc:mysql://localhost:3306/test" />
11         <property name="username" value="root" />
12         <property name="password" value="1" />
13     </bean>
14
15     <!-- 配置 -->
16     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
17         <property name="dataSource" ref="dataSource" />
18     </bean>
19
20
21     <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
22         <property name="configLocation" value="com/foreverlin/SqlMapConfig.xml" />
23         <property name="dataSource" ref="dataSource" />
24     </bean>
25
26
27     <!-- dao -->
28     <bean id="stuDao" class="com.foreverlin.StuDaoImpl">
29          <property name="sqlMapClient" ref="sqlMapClient"/>
30     </bean>
31 </beans>

sqlMapConfig.xml其實主要就一句話，告訴編譯器我的ibatis操作映射文件在哪裏

XML語言: Codee#21579

1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"
3     "http://www.ibatis.com/dtd/sql-map-config-2.dtd">
4 <sqlMapConfig>
5
6     <sqlMap resource="com/foreverlin/stu.xml"/>
7 </sqlMapConfig>

ibatis操作映射文件stu.xml

XML語言: Codee#21580

01 <?xml version="1.0" encoding="UTF-8"?>
02 <!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN" "http://www.ibatis.com/dtd/sql-map-2.dtd">
03
04 <sqlMap namespace="Stu">
05        
06     <typeAlias alias="Stu" type="com.foreverlin.Stu"/>       
07
08     <resultMap id="Stu" class="com.foreverlin.Stu">
09         <result property="stuId" column="STU_ID" />
10         <result property="name" column="STU_NAME" />
11         <result property="like" column="STU_LIKE" />
12     </resultMap>
13
14     <select id="StuDaoImpl.queryAllStu" resultMap="Stu">
15         SELECT * FROM STU
16     </select>
17    
18     <insert id="StuDaoImpl.addStu" parameterClass="com.foreverlin.Stu">
19         INSERT INTO STU (STU_ID,STU_NAME,STU_LIKE)
20         VALUES(#stuId#,#name#,#like#)
21     </insert>
22    
23     <delete id="StuDaoImpl.deleteStuById">
24         DELETE FROM STU WHERE STU_ID = #value#
25     </delete>
26      
27     <update id="StuDaoImpl.updateStuById" parameterClass="com.foreverlin.Stu">
28         UPDATE STU
29         SET STU_ID = #stuId#, STU_NAME = #name#, STU_LIKE = #like# WHERE STU_ID = #stuId#
30     </update>
31
32 </sqlMap>

parameterClass代表要傳入的參數路徑和名稱,返回參數推薦用resultMap哦親，它可以取出多，而resultClass只能取出單個！