表和数据：
CREATE TABLE weather (city varchar(80),temp_lo int, -- low temperaturetemp_hi int, -- high temperatureprcp real, -- average temperaturedate date
);insert into weather values ('Wuhan', 15, 30, 25.5, '2011-09-21');
insert into weather values ('Beijing', 10, 22, 15.3, '2011-09-22');
insert into weather values ('Shanghai', 17, 35, 28.6, '2011-09-22');
insert into weather values ('Guangzhou', 30, 36, 32.7, '2011-09-22');
insert into weather values ('Xiamen', 24, 32, 30.3, '2011-09-22');文件目录及说明：
配置文件，WeatherRecord.xml，描述操作细节
<?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 namespace="WeatherRecord"><!-- Use type aliases to avoid typing the full classname every time. --><typeAlias alias="WeatherRecord" type="com.gq.ibatis.WeatherRecord"/><!-- Result maps describe the mapping between the columns returnedfrom a query, and the class properties. A result map isn'tnecessary if the columns (or aliases) match to the properties exactly. --><resultMap id="WeatherResult" class="WeatherRecord"><result property="city" column="city"/><result property="lowTemperature" column="temp_lo"/><result property="highTemperature" column="temp_hi"/><result property="avgTemperature" column="prcp"/><result property="date" column="date"/></resultMap><!-- Select with no parameters using the result map for WeatherResult class. --><select id="selectAllWeatherRecords" resultMap="WeatherResult">select * from weather</select><!-- A simpler select example with the result map. Using the String parameter class --><select id="selectWeatherRecordByCity" parameterClass="String" resultMap="WeatherResult">select * from weather where city = #city#</select><!-- Insert example, using the WeatherResult parameter class --><insert id="insertWeatherRecord" parameterClass="WeatherRecord">insert into weather (city,temp_lo,temp_hi,prcp,date)values (#city#, #lowTemperature#, #highTemperature#, #avgTemperature#, #date#)</insert><!-- Update example, using the WeatherResult parameter class --><update id="updateWeatherRecord" parameterClass="WeatherRecord">update weather setcity = #city#,temp_lo = #lowTemperature#,temp_hi = #highTemperature#,prcp = #avgTemperature#,date = #date#wherecity = #city#</update><!-- Delete example, using an String as the parameter class --><delete id="deleteWeatherRecordByCity" parameterClass="String">delete from weather where city = #city#</delete></sqlMap><?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><!-- Configure a built-in transaction manager. If you're using an app server, you probably want to use its transaction manager and a managed datasource --><transactionManager type="JDBC"><dataSource type="SIMPLE"><property name="JDBC.Driver" value="org.postgresql.Driver"/><property name="JDBC.ConnectionURL" value="jdbc:postgresql://localhost:5432/testdb"/><property name="JDBC.Username" value="postgres"/><property name="JDBC.Password" value="postgres"/></dataSource></transactionManager><!-- List the SQL Map XML files. They can be loaded from the classpath, as they are here (com.domain.data...) --><sqlMap resource="com/gq/ibatis/WeatherRecord.xml"/><!-- List more here...<sqlMap resource="com/mydomain/data/Order.xml"/><sqlMap resource="com/mydomain/data/Documents.xml"/>--></sqlMapConfig>
注意：数据库中的 date 为 date类型，则Java 中对应为 java.sql.Date ！
不能改为 String 类型，会映射出错。
/**
*Create Date :2011-9-22
*Create User :GongQiang
*Modify Status :
*File Location $Archive:Test-WebService/com.gq.ibatis/WeatherRecord.java$
*Last Modify $Author: $
*Modify Date $Date: $
*Now Revision $Revision: $
*
*Copyright (c) 2004 Sino-Japanese Engineering Corp, Inc. All Rights Reserved.
*/package com.gq.ibatis;import java.sql.Date;public class WeatherRecord {private String city;private int lowTemperature;private int highTemperature;private float avgTemperature;private Date date;public String getCity() {return city;}public void setCity(String city) {this.city = city;}public int getLowTemperature() {return lowTemperature;}public void setLowTemperature(int lowTemperature) {this.lowTemperature = lowTemperature;}public int getHighTemperature() {return highTemperature;}public void setHighTemperature(int highTemperature) {this.highTemperature = highTemperature;}public float getAvgTemperature() {return avgTemperature;}public void setAvgTemperature(float avgTemperature) {this.avgTemperature = avgTemperature;}public Date getDate() {//DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");//return dateFormat.format(date);return date;}public void setDate(Date date) {this.date = date;}}
package com.gq.ibatis;import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
import com.ibatis.common.resources.Resources;import java.io.Reader;
import java.io.IOException;
import java.util.List;
import java.sql.SQLException;/*** This is not a best practices class. It's just an example to give you an idea* of how iBATIS works. For a more complete example, see JPetStore 5.0 at* http://www.ibatis.com.*/
public class SimpleExample {/*** SqlMapClient instances are thread safe, so you only need one. In this* case, we'll use a static singleton. So sue me. ;-)*/private static SqlMapClient sqlMapper;/*** It's not a good idea to put code that can fail in a class initializer,* but for sake of argument, here's how you configure an SQL Map.*/static {try {Reader reader = Resources.getResourceAsReader("com/gq/ibatis/SqlMapConfig.xml");sqlMapper = SqlMapClientBuilder.buildSqlMapClient(reader);reader.close();} catch (IOException e) {// Fail fast.throw new RuntimeException("Something bad happened while building the SqlMapClient instance."+ e, e);}}@SuppressWarnings("unchecked")/** It is safe cast, because list contain just WeatherRecord **/public static List<WeatherRecord> selectAllWeatherRecords() throws SQLException {return (List<WeatherRecord>) sqlMapper.queryForList("selectAllWeatherRecords");}public static WeatherRecord selectWeatherRecordByCity(String city)throws SQLException {return (WeatherRecord) sqlMapper.queryForObject("selectWeatherRecordByCity", city);}public static void insertWeatherRecord(WeatherRecord WeatherRecord)throws SQLException {sqlMapper.insert("insertWeatherRecord", WeatherRecord);}public static void updateWeatherRecord(WeatherRecord WeatherRecord)throws SQLException {sqlMapper.update("updateWeatherRecord", WeatherRecord);}public static void deleteWeatherRecordByCity(String city) throws SQLException {sqlMapper.delete("deleteWeatherRecordByCity", city);}}
/**
*Create Date :2011-9-22
*Create User :GongQiang
*Modify Status :
*File Location $Archive:Test-WebService/com.gq.ibatis/TestIbatis.java$
*Last Modify $Author: $
*Modify Date $Date: $
*Now Revision $Revision: $
*
*Copyright (c) 2004 Sino-Japanese Engineering Corp, Inc. All Rights Reserved.
*/package com.gq.ibatis;import java.sql.SQLException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.List;public class TestIbatis {public static void main(String[] args) throws SQLException {testSelectAll();testSelectByCity();testInsert();System.out.println("---- After insert ----");testSelectAll();testUpdate();System.out.println("---- After update ----");testSelectAll();testDeleteByCity();System.out.println("---- After delete ----");testSelectAll();}/** 查询所有*/private static void testSelectAll() throws SQLException{List<WeatherRecord> weatherRecords = null;weatherRecords = SimpleExample.selectAllWeatherRecords();for( WeatherRecord wr : weatherRecords ){System.out.print( wr.getCity() + "\t" );System.out.print( wr.getLowTemperature() + "\t" );System.out.print( wr.getHighTemperature() + "\t" );System.out.print( wr.getAvgTemperature() + "\t" );System.out.println( wr.getDate() + "\t" );}}/** 根据城市名查询**/private static void testSelectByCity() throws SQLException{WeatherRecord wr = SimpleExample.selectWeatherRecordByCity("Beijing");System.out.println("Find record by city: "+ wr.getCity());System.out.print( wr.getCity() + "\t");System.out.print( wr.getLowTemperature() + "\t");System.out.print( wr.getHighTemperature() + "\t");System.out.print( wr.getAvgTemperature() + "\t");System.out.println( wr.getDate());}/** 插入操作**/private static void testInsert() throws SQLException{WeatherRecord wr = new WeatherRecord();wr.setCity( "Changchun" );wr.setLowTemperature( 5 );wr.setHighTemperature( 15 );wr.setAvgTemperature( 8.6f );wr.setDate( parseDate("2011-09-22") );SimpleExample.insertWeatherRecord(wr);}private static java.sql.Date parseDate( String dateStr ){DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");try {return new java.sql.Date(dateFormat.parse( dateStr ).getTime());} catch (ParseException e) {e.printStackTrace();}return null;}/** 更新操作**/private static void testUpdate() throws SQLException{WeatherRecord wr = new WeatherRecord();wr.setCity( "Changchun" );wr.setLowTemperature( 5 );wr.setHighTemperature( 15 );wr.setAvgTemperature( 8.6f );wr.setDate( parseDate("2012-01-01") );SimpleExample.updateWeatherRecord(wr);}private static void testDeleteByCity() throws SQLException{SimpleExample.deleteWeatherRecordByCity( "Changchun" );}}
