spring+ibatis【基本配置及動態sql】
阿新 • • 發佈：2019-02-02
1、準備jar：commons-dbcp.jar、commons-logging.jar、commons-pool.jar、ibatis-common-2.jar、ibatis-sqlmap-2.jar、javax.servlet-5.1.12.jar、log4j-1.2.14.jar、spring-2.0.jar、spring-beans-2.0.6.jar、spring-context-2.0.6.jar、spring-core-2.0.6.jar、spring-web-2.0.6.jar、spring-webmvc.jar
JDBC jar：本文以oracle為例，ojdbc14.jar
2、工程目錄：
3、實體配置 Ibatis.xml 、Eq.xml
Ibatis.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 > <!-- 配置實體；user：相當於取了一個別名 --> <typeAlias type="com.tmall.bean.Ibatis" alias="user"/> <!-- 設定resultMap,column是資料表的列，property實際是實體bean中的屬性 --> <resultMap id="ibatisTest" class="user" > <result column="id" property="id" jdbcType="VARCHAR" /> <result column="name" property="name" jdbcType="VARCHAR" /> </resultMap> <!-- id:為這個sql取一個別名；resultMap:返回值型別 --> <!-- 獲得全查詢列表 --> <select id="getAllUsers" resultMap="ibatisTest"> select * from Ibatis </select> <!-- 根據使用者名稱獲得使用者物件 --> <select id="getUsersByName" resultMap="ibatisTest"> select * from Ibatis where name=#value# </select> <!-- 根據id獲得使用者物件 --> <select id="getUsersById" resultMap="ibatisTest"> select * from Ibatis where id=#value# </select> <!-- 根據id和name獲得使用者物件 --> <select id="getUsersByIdAndName" resultMap="ibatisTest" parameterClass="java.util.Map" > select * from Ibatis where id=#id# and name=#name# </select> <!-- 新增使用者物件 --> <insert id="insertUsers" parameterClass="user" > insert into ibatis (id,name) values (#id#,#name#) </insert> <!-- 刪除使用者物件 --> <delete id="deleteUsers"> delete from ibatis where id=#value# </delete> <!-- 更新使用者物件 --> <delete id="updateUsers" parameterClass="user"> update ibatis set name=#name# where id=#id# </delete> </sqlMap>
Eq.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> <!-- 配置實體；eqinfo：相當於取了一個別名 --> <typeAlias type="com.tmall.bean.Eq" alias="eqinfo" /> <!-- 設定resultMap --> <resultMap id="eqInfo" class="eqinfo"> <result column="eq_id" property="eq_id" jdbcType="VARCHAR" /> <result column="eq_name" property="eq_name" jdbcType="VARCHAR" /> </resultMap> <!-- 根據id獲得使用者物件 --> <select id="getEqInfoById" resultMap="eqInfo"> select eq_id,eq_name from eq where eq_id=#value# </select> <!-- 根據id或者名稱獲得使用者物件 --> <select id="getEqInfoByIdAadName" resultMap="eqInfo" parameterClass="java.util.Map"> select eq_id,eq_name from eq <!-- 動態新增sql --> <dynamic prepend="where"> <!-- 不為空就新增條件 --> <isNotEmpty prepend="and" property="id"> eq_id=#id# </isNotEmpty> <isNotEmpty prepend="or" property="name"> eq_name like '%$name$%' </isNotEmpty> </dynamic> </select> </sqlMap>
4、sql對映檔案：sqlMapConfig.xml
<?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>
<!-- 配置實體xml檔案路徑，支援多個實體 -->
<sqlMap resource="Ibatis.xml" />
<sqlMap resource="Eq.xml" />
</sqlMapConfig>5、spring配置檔案：applicationContext.xml檔案配置
<?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">
<!-- 資料庫jdbc配置 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName">
<value>oracle.jdbc.OracleDriver</value>
</property>
<property name="username">
<value>test</value>
</property>
<property name="password">
<value>test123</value>
</property>
<property name="url">
<value>jdbc:oracle:thin:@127.0.0.1:1521:test</value>
</property>
</bean>
<!-- 此處應注入ibatis配置檔案，而非sqlMap檔案，否則會出現“there is no statement.....異常” -->
<!-- org.springframework.orm.ibatis.SqlMapClientFactoryBean spring檔案 -->
<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
<property name="configLocation">
<!-- sqlMap配置檔案路徑 -->
<value>sqlMapConfig.xml</value>
</property>
</bean>
<!-- 注入javabean -->
<bean id="DaoImp" class="com.tmall.dao.DaoImp">
<property name="dataSource">
<ref bean="dataSource"/>
</property>
<property name="sqlMapClient">
<ref bean="sqlMapClient"/>
</property>
</bean>
</beans>6、javaBean Eq、Ibatis
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;
}
/**
* 需要一個空的建構函式
*/
public Ibatis() {
}
public Ibatis(String id, String name) {
super();
this.id = id;
this.name = name;
}
}
package com.tmall.bean;
public class Eq {
private String eq_id;
private String eq_name;
public Eq() {
super();
}
public Eq(String eq_id, String eq_name) {
super();
this.eq_id = eq_id;
this.eq_name = eq_name;
}
public String getEq_id() {
return eq_id;
}
public void setEq_id(String eq_id) {
this.eq_id = eq_id;
}
public String getEq_name() {
return eq_name;
}
public void setEq_name(String eq_name) {
this.eq_name = eq_name;
}
@Override
public String toString() {
return "Eq [eq_id=" + eq_id + ", eq_name=" + eq_name + "]";
}
}
7、Dao、DaoImp
package com.tmall.dao;
import java.util.List;
import com.tmall.bean.Eq;
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);
public Ibatis getByNameAndId(String name, String id);
public Eq getEqInfoById(String id);
public List<Eq> getEqList(String name, String id);
}
package com.tmall.dao;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;
import com.tmall.bean.Eq;
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);
}
@Override
public Ibatis getByNameAndId(String name, String id) {
Map<String, String> map = new HashMap<String, String>();
map.put("name", "1");
map.put("id", "1");
return (Ibatis) getSqlMapClientTemplate().queryForObject(
"getUsersByIdAndName", map);
}
@Override
public Eq getEqInfoById(String eq_id) {
return (Eq) getSqlMapClientTemplate().queryForObject("getEqInfoById",
eq_id);
}
@SuppressWarnings("unchecked")
@Override
public List<Eq> getEqList(String name, String id) {
Map<String, String> map = new HashMap<String, String>();
map.put("name", name);
map.put("id", id);
return getSqlMapClientTemplate().queryForList("getEqInfoByIdAadName",
map);
}
}
8、好了完成以上操作，下面測試呼叫了
package com.tamll.test;
import java.util.Iterator;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.tmall.bean.Eq;
import com.tmall.bean.Ibatis;
import com.tmall.dao.DaoImp;
public class Test {
public static void main(String[] args) {
ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
DaoImp dao = (DaoImp)context.getBean("DaoImp");
Iterator<Ibatis> iterator = dao.getList().iterator();
while(iterator.hasNext()){
Ibatis i = iterator.next();
System.out.println(i.getId()+i.getName());
}
Ibatis ibatis = dao.getByNameAndId("1", "1");
System.out.println(ibatis.getId()+ibatis.getName());
Eq eq = dao.getEqInfoById("test");
System.out.println(eq.getEq_name());
List<Eq> eqs = dao.getEqList("test","test");
Iterator<Eq> i = eqs.iterator();
while(i.hasNext()){
Eq e = i.next();
System.out.println(e.toString());
}
}
}
以上簡單學習之後整的一個測試，包含基本配置以及動態sql的配置。
ibatis的優缺點：
ibatis 是一種“半 自動化”的ORM實現，可以自定義返回結果。ibatis是一種半自動化的ORM, 需要手工編寫sql ；hibernate不需要手工編寫sql，完全由hibernate實現反射。