MyBatis簡單的增刪改查以及簡單的分頁查詢實現
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<!-- give a alias for model -->
<typeAlias alias="goods" type="com.clark.model.Goods"></typeAlias>
</typeAliases>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@172.30.0.125:1521:oradb01" />
<property name="username" value="settlement" />
<property name="password" value="settlement" />
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="com/clark/model/goodsMapper.xml" />
</mappers>
</configuration> <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="clark">
<!-- 將db查詢出來的結果映射到Model--Goods -->
<resultMap type="com.clark.model.Goods" id="t_good">
<id column="id" property="id"/>
<result column="cate_id" property="cateId"/>
<result column="name" property="name"/>
<result column="price" property="price"/>
<result column="description" property="description"/>
<result column="order_no" property="orderNo"/>
<result column="update_time" property="updateTime"/>
</resultMap>
<!-- 根據id查詢 返回Goods類型 <typeAlias alias="goods" type="com.clark.model.Goods"></typeAlias>-->
<!--resultMap 和 resultType的使用區別-->
<select id="selectGoodById" parameterType="int" resultType="goods">
select id,cate_id,name,price,description,order_no,update_time
from goods where id = #{id}
</select>
<!-- 查詢所有Goods 返回resultMap類型-->
<select id="selectAllGoods" resultMap="t_good">
select id,cate_id,name,price,description,order_no,update_time from goods
</select>
<!-- 指定parameterType=map 其中map的形式為Map<String,PageBean> map-->
<select id="selectGoodsByPage" resultMap="t_good" parameterType="map">
<!-- order by id asc是指對查詢后的結果進行升序排序 -->
<![CDATA[
select * from
(select g.*,rownum rn from (select * from goods) g where 1=1 and rownum <= #{pageBean.endNumber})
where rn >= #{pageBean.startNumber}
order by id asc
]]>
</select>
<!-- 新增Goods 參數類型為Goods-->
<insert id="insertGood" parameterType="goods">
insert into goods(id,cate_id,name,price,description,order_no,update_time)
values(#{id},#{cateId},#{name},#{price},#{description},#{orderNo},#{updateTime})
</insert>
<!-- 更新Goods 參數類型為Goods-->
<update id="updateGood" parameterType="goods">
update goods g
set g.name = #{name},g.order_no =#{orderNo}
where g.id = #{id}
</update>
<!-- 刪除Goods 參數類型為int-->
<delete id="deleteGood" parameterType="int">
delete from goods g
where g.id = #{id}
</delete>
</mapper> package com.clark.model;import java.util.Date; public class Goods { private Integer id; private Integer cateId; private String name; private double price; private String description; private Integer orderNo; private Date updateTime; public Goods(){ } public Goods(Integer id, Integer cateId, String name, double price, String description, Integer orderNo, Date updateTime) { super(); this.id = id; this.cateId = cateId; this.name = name; this.price = price; this.description = description; this.orderNo = orderNo; this.updateTime = updateTime; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public Integer getCateId() { return cateId; } public void setCateId(Integer cateId) { this.cateId = cateId; } public String getName() { return name; } public void setName(String name) { this.name = name; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public Integer getOrderNo() { return orderNo; } public void setOrderNo(Integer orderNo) { this.orderNo = orderNo; } public Date getTimeStamp() { return updateTime; } public void setTimeStamp(Date updateTime) { this.updateTime = updateTime; } @Override public String toString() { return "[goods include:Id="+this.getId()+",name="+this.getName()+ ",orderNo="+this.getOrderNo()+",cateId="+this.getCateId()+ ",updateTime="+this.getTimeStamp()+"]"; } } </pre><a style="text-indent:0px;" title="派生到我的代碼片" href="/misc/goto?guid=4959615104961912255" target="_blank"></a></div></div> </div>
package com.clark.model;
//模擬的一個分頁對象PageBean
public class PageBean {
//開始數
private Integer startNumber;
//結束數
private Integer endNumber;public PageBean(){ } public PageBean(Integer startNumber, Integer endNumber) { super(); this.startNumber = startNumber; this.endNumber = endNumber; } public Integer getStartNumber() { return startNumber; } public void setStartNumber(Integer startNumber) { this.startNumber = startNumber; } public Integer getEndNumber() { return endNumber; } public void setEndNumber(Integer endNumber) { this.endNumber = endNumber; } } </pre><a style="text-indent:0px;" title="派生到我的代碼片" href="/misc/goto?guid=4959615104961912255" target="_blank"></a></div></div> </div>
package com.clark.mybatis;import java.io.IOException;
import java.io.Reader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;import com.clark.model.Goods;
import com.clark.model.PageBean;public class TestGoods {
public static void main(String[] args) throws IOException {
String resource = "configuration.xml";
Reader reader = null;
SqlSessionFactory sessionFactory = null;
SqlSession session = null;
try {
reader = Resources.getResourceAsReader(resource);
sessionFactory = new SqlSessionFactoryBuilder().build(reader);
session = sessionFactory.openSession();
PageBean pageBean = new PageBean(8, 20);
Map<String,PageBean> map = new HashMap<String, PageBean>();
map.put("pageBean", pageBean);
List<Goods> gs = findGoodsByPage(session,map);
for (Goods goods2 : gs) {
System.out.println(goods2.toString());
}
} catch (IOException e) {
e.printStackTrace();
}finally{
session.close();
reader.close();
}
}
//find by id
public static Goods findGoodById(SqlSession session,Integer id){
//clark對應著goodMapper.xml配置文件中的namespace name="clark"
Goods goods = (Goods)session.selectOne("clark.selectGoodById", id);
return goods;
}
//find all
public static List<Goods> findAllGoods(SqlSession session){
List<Goods> goods = session.selectList("clark.selectAllGoods");
return goods;
}
public static List<Goods> findGoodsByPage(SqlSession session,Map<String,PageBean> map){
List<Goods> goods = session.selectList("clark.selectGoodsByPage",map);
return goods;
}
//insert a goods
public static int insertGoods(SqlSession session,Goods goods){
int result = session.insert("clark.insertGood", goods);
session.commit();
return result;
}
//update goods
public static int updateGoods(SqlSession session,Goods goods){
int result = session.update("clark.updateGood", goods);
session.commit();
return result;
}
//delete goods
public static int deleteGood(SqlSession session,Integer id){
int result = session.delete("clark.deleteGood", id);
session.commit();
return result;
}
} </pre></div> </div> </div> 來自:http://blog.csdn.net/caolipeng_918/article/details/39346657本文由用戶 jopen 自行上傳分享,僅供網友學習交流。所有權歸原作者,若您的權利被侵害,請聯系管理員。轉載本站原創文章,請注明出處,并保留原始鏈接、圖片水印。本站是一個以用戶分享為主的開源技術平臺,歡迎各類分享!相關經驗
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