銆銆鏈榪戞娊絀哄涔犱簡Mybatis榪欎釜妗嗘灦錛屽湪瀛︿範鐨勮繃紼嬩腑涔熸壘浜嗗緢澶氱殑鏂囩珷錛屼釜浜烘劅瑙夊畼緗戜笂鐨勪笢瑗垮お澶氬お鏉傦紝涓嶉傚悎璁稿甯屾湜涓姝ユ蹇熶笂鎵嬬殑鏈嬪弸浠紝褰撶劧瑙夊緱鏌ラ槄闂鐨勬椂鍊欏彲浠ョ洿鎺ラ氳繃瀹樼綉鎵捐繕姣旇緝蹇垨鑰呮槸StackOverflow錛岄壌浜庢鍘熷洜鎶婅嚜宸辨兂鎶婅嚜宸卞涔犺繃紼嬩腑鐨勭粡楠岀暀浣滅瑪璁頒互渚涘垎浜弬鑰冧箣鐢紝灝介噺灝戠粫寮礬銆傚洜涓烘兂鐩存帴浜嗚ВMybatis鐨勪嬌鐢ㄦ柟寮忥紝鑰岀綉涓婃湁璁稿瀛︿範鏂囩珷鏄疢ybatis涓嶴pring鐨勭粨鍚堣寖渚嬶紝鎴栬呰鐩存帴鍦╓eb Project欏圭洰涓嬪垱绔嬬殑鑼冧緥錛屾劅瑙夊浜庡彧鏄函綺規(guī)兂浜嗚В閭ｄ釜涓滆タ鎬庝箞浣跨敤鐨勬湅鍙嬪簲璇ヤ笉闇瑕侀偅涔堝闄勫姞鐨勬潯浠訛紝鎵浠ユ湰緋誨垪涓洿鎺ョ敤鏈綆鍗曠殑Java Project浣滆寖渚嬫紨紺恒?/p>
銆銆浠涔堟槸Mybatis錛屽墠韜玦Batis錛堜釜浜烘病鐢ㄨ繃錛屾墍浠ユ病浠涔堝彂璦鏉冿級錛屽紩榪板畼緗戠殑鍘熸剰鏉ヨ錛孧ybatis鏄敮鎸佹櫘閫歋QL鏌ヨ錛屽彲浠ユ洿綆鍗曠洿鎺ョ殑鎿嶄綔SQL錛屽瓨鍌ㄨ繃紼嬪拰楂樼駭鏄犲皠鐨勪竴縐嶄紭縐鐨勬寔涔呭眰妗嗘灦錛屼嬌鐢ㄥ畠鍩烘湰鍙互娑堥櫎鎵鏈夌殑JDBC澶ч害鍜屽弬鏁扮殑鎵嬪伐璁劇疆浠ュ強緇撴灉闆嗙殑媯绱紝鍏跺疄涓漢浣跨敤涓嬫潵鎰熻錛屽叾瀹炰富瑕佸伐浣滈兘鏄湪閰嶇疆XML鎴栬呮敞瑙ｄ笂錛岀劧鍚庡皢鎺ュ彛鍜孞ava鐨凱OJO錛堟櫘閫欽ava瀵硅薄鏄犲皠鎴愭暟鎹簱鐨勮褰曪級錛屼釜浜烘病鐢ㄨ繃Java鐨凥b錛屾墍浠ュ浜庝袱鑰呬箣闂寸殑宸紓鎬т篃娌℃潈闄愬彂琛ㄦ剰瑙侊紝鎴戠浉淇″悇涓簨鐗╃殑浜х敓鎬繪湁瀹冭嚜宸辯殑鐩殑銆?/p>
銆銆榪欐鏃墮棿瀛︿範涓嬫潵錛屽叾瀹炲Mybatis鏉ヨ涓昏鐨勮繃紼嬫棤娉曟槸浠ヤ笅鍑犳
銆銆1. 浠嶺ML閰嶇疆鏂囦歡涓幏鍙朣essionFactory錛岀劧鍚庣敱SessionFactory浜х敓鐩稿簲鐨凷ession銆?/p>
銆銆2. 鏄敤Session瀵硅薄瀵逛笟鍔℃暟鎹畬鎴愮浉搴旂殑CRUD鎿嶄綔錛堝鍒犳敼鏌ワ級鍜岀浉搴旂殑浜嬪姟鎺у埗銆?/p>
銆銆3. 浣跨敤瀹屾瘯鍚庡叧闂浉搴旂殑Session錛屼互鍏嶈繃搴﹀崰鐢ㄨ祫婧?/p>
銆銆4. 浣跨敤閰嶇疆鐩稿簲鐨凪apper xml鏂囦歡榪涜涓氬姟瀹炰綋鐨凧avaBean涓庢暟鎹簱琛ㄤ箣闂村仛鐩稿簲鐨凪ap鎿嶄綔
鎴樺墠鍑嗗錛?/p>
銆銆1. 寮鍙戠幆澧僂clipse JavaEE IDE錛孞DK 1.6錛屾暟鎹簱mysql 5.5
銆銆2. 涓嬭澆鐩稿簲Jar鍖咃紝浠ュ鍚庣敤
銆銆銆銆mybatis-3.2.3.zip 瑙ｅ帇鍚庢嬁鍑?mybatis-3.2.3.jar錛?> 涓嬭澆鍦板潃錛?http://code.google.com/p/mybatis/ 錛圡ybatis鏍稿績鍖咃級
銆銆銆銆mybatis-generator-core-1.3.1.jar => 涓嬭澆鍦板潃錛?http://code.google.com/p/mybatis/wiki/Generator 錛圡ybatis鑷姩鐢熸垚閰嶇疆鏂囦歡鍖咃級
銆銆銆銆mysql-connector-java-5.1.26-bin.jar => 涓嬭澆鍦板潃錛?a data-mce->http://dev.mysql.com/downloads/connector/j/ 錛圡ysql 鐨刯dbc椹卞姩鍖咃級
銆銆
銆銆鎺ヤ笅鏉ュぇ瀹跺彲浠ュ啀Eclipse涓嬮潰寤轟竴涓悕涓篗ybatisDemo鐨凧ava Project欏圭洰錛屾寜鐓у涓嬪浘涓墍紺烘柊寤虹浉搴旂殑鍖呯粨鏋勫拰鏂囦歡澶圭粨鏋勶紝鍏朵腑config涓巑apper鍒嗗埆涓烘枃浠跺す錛?/p>
銆銆鍖卍avid.mybatis.demo涓庡寘david.mybatis.model涓嬪垎鍒瓨鏀劇浉搴旂殑demo榪愯紼嬪簭涓嶫avabean瀵硅薄錛宭ib鏂囦歡澶逛笅瀛樻斁鍒氬垰涓嬭澆鐨勯偅鍑犱釜絎笁鏂筳ar鍖呫?/p>
銆銆銆銆銆銆銆銆銆銆銆銆
銆銆
銆銆寤哄畬涓嬮潰鐨勭洰褰曪紝鎴戜滑鍙互娣誨姞鐩稿簲鐨凧ar鍖咃紝濡備笅鍥?/p>
銆銆
銆銆瀹屾垚鍚庯紝鎵ц涓嬮潰SQL錛屽緩绔婦EMO鎵闇鐨勮〃緇撴瀯錛屽垎鍒湁3寮犺〃錛孷isitor錛堣闂呰〃錛夛紝Website錛堢綉绔欒〃錛夛紝Channel錛堥閬撹〃錛夈
寤鴻〃SQL
/*鍒涘緩Visitor*/
CREATE TABLE Visitor
(
Id INT(11) NOT NULL AUTO_INCREMENT,
Name VARCHAR(1000) NOT NULL,
Email VARCHAR(1000) NOT NULL,
Status INT NOT NULL DEFAULT 1,
CreateTime DateTime,
PRIMARY KEY(Id)
)
/*鍒涘緩緗戠珯琛?/span>*/
CREATE TABLE Website
(
Id INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
Name VARCHAR(1000) NOT NULL,
VisitorId INT REFERENCES Visitor(Id),
Status INT NOT NULL DEFAULT 1,
CreateTime DateTime
)
/*鍒涘緩棰戦亾琛?/span>*/
CREATE TABLE Channel
(
Id INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
Name VARCHAR(1000) NOT NULL,
WebsiteId INT REFERENCES Website(Id),
Status INT NOT NULL DEFAULT 1,
CreateTime DateTime
)
鎵鏈夎繖浜涢兘瀹屾垚鍚庯紝鎴戜滑灝辮寮濮嬪姩鎵嬪暒~
灝卞儚寮澶磋鐨勶紝Mybatis鐨勬墍鏈夐厤緗兘婧愪簬涓浠絏ML閰嶇疆鏂囦歡錛屾垜浠渶瑕佸湪config鏂囦歡澶逛笅錛屾柊寤哄悕涓簃ybatis_demo_config.xml鐨勯厤緗枃浠訛紝榪欎竴浠戒笢瑗垮氨鏄垜浠悗闈㈡墍闇瑕佹搷浣滅殑鏍稿績涔嬩竴銆?/p>
鍦ㄩ厤緗繖涓枃浠?span style="background-color: #ffff00;" data-mce-style="background-color: #ffff00;">鍗冧竾瑕佹敞鎰?/strong><configuration>鑺傜偣鍐呯殑鍏冪礌閮芥槸鏈夊眰綰ч『搴?/strong>鐨勮姹傜殑錛屼笉鑳藉闅忔剰鏇存崲嬈″簭錛屽惁鍒欏湪鍔犺澆xml閰嶇疆鏂囦歡鐨勬椂鍊欎細鍑虹幇寮傚父鑰屽鑷村悗緇搷浣滀笉鎴愬姛銆?/span>
鍏蜂綋鐨勮妭鐐硅鏄庡ぇ瀹跺彲浠ユ煡鐪?a data-mce->http://mybatis.github.io/mybatis-3/zh/configuration.html#錛岃繖閲屽彧璇存瘮杈冨父鐢ㄧ殑鑺傜偣錛宼ypeAliases錛宔nvironments錛宮appers銆?/span>
1. typeAliases => 鍒悕鑺傜偣錛屽彲浠ラ氳繃璁劇疆榪欎釜鑺傜偣鐨勫睘鎬э紝榪欐牱閰嶇疆鏂囦歡涓叾浠栭渶瑕佸疄浣撳悕瀛楃殑鍦版柟閮藉彲浠ヤ嬌鐢ㄦ鍒悕鑰屼笉鏄畬鍏ㄩ檺瀹氬悕錛屼緥濡?<typeAlias type="david.mybatis.model.Visitor" alias="Visitor" />
2. environments => 鐜鑺傜偣錛岄厤緗暟鎹繛鎺ョ浉鍏崇殑淇℃伅
3. mappers => 閰嶇疆SQL鏄犲皠璇彞銆?/p>
鏈綆鍗曠殑閰嶇疆濡備笅錛?br />
XML閰嶇疆
<?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>
<typeAlias type="david.mybatis.model.Visitor" alias="Visitor" />
</typeAliases>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"></transactionManager>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver" />
<!-- ?useUnicode=true&characterEncoding=utf8涓轟簡鏀寔涓枃鏁版嵁鐨勫啓鍏?nbsp;-->
<property name="url"
value="jdbc:mysql://127.0.0.1:3306/mybatis_db?useUnicode=true&characterEncoding=utf8" />
<property name="username" value="root" />
<property name="password" value="123456" />
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="mapper/VisitorMapper.xml" />
</mappers>
</configuration>
鍦ㄥ寘david.mybatis.demo涓嬮潰鏂板緩涓涓悕涓篗yBatisUtils綾伙紝閲岄潰瀛樻斁鑾峰彇SqlSession涓庡叧闂璖qlSession鐨勬柟娉曪紝鎻愮偧鍑烘潵鏂逛究澶氭澶嶇敤銆?/p>
MybatisUtils綾?/span>
package david.mybatis.demo;
import java.io.InputStream;
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 david.mybatis.model.CRUD_Enum;
public class MybatisUtils {
private static final String CONFIG_PATH = "config/mybatis_demo_config.xml";
/*
* 鑾峰彇鏁版嵁搴撹闂摼鎺?br />
*/
public static SqlSession getSqlSession() {
SqlSession session = null;
try {
InputStream stream = Resources.getResourceAsStream(CONFIG_PATH);
//鍙互鏍規(guī)嵁閰嶇疆鐨勭浉搴旂幆澧冭鍙栫浉搴旂殑鏁版嵁搴撶幆澧?br />
// SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(
// stream, "development");
SqlSessionFactory factory = new SqlSessionFactoryBuilder()
.build(stream);
session = factory.openSession();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
return session;
}
/*
* 鑾峰彇鏁版嵁搴撹闂摼鎺?br />
*/
public static void closeSession(SqlSession session) {
session.close();
}
/*
* 榪斿洖鎿嶄綔璁板綍娑堟伅
*/
public static void showMessages(CRUD_Enum type, int count) {
switch (type) {
case Add:
System.out.println("娣誨姞浜?/span>" + count + "鏉¤褰曘?/span>");
break;
case Delete:
System.out.println("鍒犻櫎浜?/span>" + count + "鏉¤褰曘?/span>");
break;
case Update:
System.out.println("鏇存柊浜?/span>" + count + "鏉¤褰曘?/span>");
break;
case Query:
System.out.println("鍖歸厤浜?/span>" + count + "鏉¤褰曘?/span>");
break;
case List:
System.out.println("鍏辨湁" + count + "鏉¤褰曘?/span>");
break;
default:
break;
}
}
}
鍦ㄥ寘david.mybatis.model涓嬮潰鏂板緩涓涓悕涓篤isitor鐨勭被錛岀敤鏉ヤ綔鐩稿簲鐨凮R Mapping銆?/p>
Visit綾?/span>
package david.mybatis.model;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Visitor {
private int id;
private String name;
private String email;
private int status;
private Date createTime;
public Visitor() {
// TODO Auto-generated constructor stub
createTime = new Date();
}
public Visitor(String name, String email) {
this.name = name;
this.email = email;
this.status = 1;
this.createTime = new Date();
}
public int getId() {
return id;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setEmail(String email) {
this.email = email;
}
public String getEmail() {
return email;
}
public Date getCreateTime() {
return createTime;
}
@Override
public String toString() {
// TODO Auto-generated method stub
return String.format("{Id: %d, Name: %s, CreateTime: %s}", id, name,
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(createTime));
}
}
鍦ㄥ寘david.mybatis.demo涓嬮潰鏂板緩涓涓猇isitorMapper.xml錛岀敤鏉ユ槧灝勭浉搴擲QL璇彞銆?/p>
榪欓噷瑕佹敞鎰弉amespace=>david.mybatis.demo.IVisitorOperation涓瀹氳涓庡搴旇繖涓寘涓嬮潰鐨勫疄闄呮枃浠跺悕錛孖VisitorOperation鍚﹀垯鏃犳硶鎴愬姛鍔犺澆鐩稿簲鐨勬槧灝勬枃浠?/strong>
VisitorMapper閰嶇疆
<mapper namespace="david.mybatis.demo.IVisitorOperation">
<!-- 姝ゅ鐨剅esultType灝辨槸瀵瑰簲鍒氬垰浣犲湪typeAlias鑺傜偣閲岄潰瑙勫畾鐨勫埆鍚?nbsp;-->
<select id="basicQuery" parameterType="int" resultType="Visitor">
select * from visitor where id=#{id} and
Status>0 order by Id
</select>
</mapper>
鎺ヤ笅鏉ヨ繍琛屼笅闈㈢殑紼嬪簭
鍩烘湰鏌ヨ
public static void testBasicQuery(int id) {
SqlSession session = MybatisUtils.getSqlSession();
try {
Visitor visitor = (Visitor) session.selectOne("david.mybatis.demo.IVisitorOperation.basicQuery", id);
MybatisUtils.closeSession(session);
System.out.println(visitor);
} catch (Exception e) {
// TODO: handle exception
}
}
涓涓渶綆鍗曠殑鎵ц緇撴灉灝卞嚭鏉ュ暒
榪欑畻鏄疢ybatis緋誨垪鐨凥elloWord錛屼笅鍥炰細璁茶堪鍏充簬浣跨敤鎺ュ彛鐨勬柟寮忚繘琛岀浉搴旀搷浣溿?/p>
]]>