学习sharding-jdbc（二）之spring+mybatis+sharding-jdbc整合

引用

http://blog.csdn.net/linuu/article/details/50929904

新建Maven项目


pom.xml
[html] view plain copy
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
  <modelVersion>4.0.0</modelVersion> 
 
  <groupId>org.study</groupId> 
  <artifactId>sharding-jdbc-mybatis</artifactId> 
  <version>0.0.1-SNAPSHOT</version> 
  <packaging>jar</packaging> 
 
  <name>sharding-jdbc-mybatis</name> 
  <url>http://maven.apache.org</url> 
 
<properties> 
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
        <spring.version>3.2.5.RELEASE</spring.version> 
        <mybatis.version>3.2.4</mybatis.version> 
    </properties> 
 
    <dependencies> 
        <dependency> 
            <groupId>junit</groupId> 
            <artifactId>junit</artifactId> 
            <version>4.10</version> 
        </dependency> 
        <dependency> 
            <groupId>com.dangdang</groupId> 
            <artifactId>sharding-jdbc-core</artifactId> 
            <version>1.0.0</version> 
        </dependency> 
        <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>spring-orm</artifactId> 
            <version>${spring.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>commons-dbcp</groupId> 
            <artifactId>commons-dbcp</artifactId> 
            <version>1.4</version> 
        </dependency> 
        <dependency> 
            <groupId>org.mybatis</groupId> 
            <artifactId>mybatis-spring</artifactId> 
            <version>1.2.2</version> 
        </dependency> 
        <dependency> 
            <groupId>org.mybatis</groupId> 
            <artifactId>mybatis</artifactId> 
            <version>${mybatis.version}</version> 
        </dependency> 
 
        <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>spring-expression</artifactId> 
            <version>${spring.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>spring-aop</artifactId> 
            <version>${spring.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>spring-beans</artifactId> 
            <version>${spring.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>spring-context</artifactId> 
            <version>${spring.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>spring-context-support</artifactId> 
            <version>${spring.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>spring-test</artifactId> 
            <version>${spring.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>spring-tx</artifactId> 
            <version>${spring.version}</version> 
        </dependency> 
        <dependency> 
            <groupId>mysql</groupId> 
            <artifactId>mysql-connector-java</artifactId> 
            <version>5.1.28</version> 
        </dependency> 
        <dependency> 
            <groupId>log4j</groupId> 
            <artifactId>log4j</artifactId> 
            <version>1.2.16</version> 
        </dependency> 
        <dependency> 
            <groupId>org.slf4j</groupId> 
            <artifactId>slf4j-log4j12</artifactId> 
            <version>1.7.5</version> 
        </dependency> 
    </dependencies> 
</project> 

新建2个库，sharding_0和sharding_1


分别在这2个库运行sql：
[java] view plain copy
/*
Navicat MySQL Data Transfer

Source Server         : PMS
Source Server Version : 50624
Source Host           : localhost:3306
Source Database       : sharding_0

Target Server Type    : MYSQL
Target Server Version : 50624
File Encoding         : 65001

Date: 2016-03-19 14:18:22
*/ 
 
SET FOREIGN_KEY_CHECKS=0; 
 
-- ---------------------------- 
-- Table structure for t_student_0 
-- ---------------------------- 
DROP TABLE IF EXISTS `t_student_0`; 
CREATE TABLE `t_student_0` ( 
  `id` int(11) NOT NULL AUTO_INCREMENT, 
  `student_id` int(11) NOT NULL, 
  `name` varchar(255) NOT NULL, 
  `age` int(11) NOT NULL, 
  PRIMARY KEY (`id`) 
) ENGINE=InnoDB  DEFAULT CHARSET=utf8; 
 
DROP TABLE IF EXISTS `t_student_1`; 
CREATE TABLE `t_student_1` ( 
  `id` int(11) NOT NULL AUTO_INCREMENT, 
  `student_id` int(11) NOT NULL, 
  `name` varchar(255) NOT NULL, 
  `age` int(11) NOT NULL, 
  PRIMARY KEY (`id`) 
) ENGINE=InnoDB  DEFAULT CHARSET=utf8; 
 
DROP TABLE IF EXISTS `t_user_0`; 
CREATE TABLE `t_user_0` ( 
  `id` int(11) NOT NULL AUTO_INCREMENT, 
  `user_id` int(11) NOT NULL, 
  `name` varchar(255) NOT NULL, 
  `age` int(11) NOT NULL, 
  PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
 
DROP TABLE IF EXISTS `t_user_1`; 
CREATE TABLE `t_user_1` ( 
  `id` int(11) NOT NULL AUTO_INCREMENT, 
  `user_id` int(11) NOT NULL, 
  `name` varchar(255) NOT NULL, 
  `age` int(11) NOT NULL, 
  PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
 
DROP TABLE IF EXISTS `t_user_2`; 
CREATE TABLE `t_user_2` ( 
  `id` int(11) NOT NULL AUTO_INCREMENT, 
  `user_id` int(11) NOT NULL, 
  `name` varchar(255) NOT NULL, 
  `age` int(11) NOT NULL, 
  PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
Student.Java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.entity; 
 
import java.io.Serializable; 
 
public class Student implements Serializable{ 
     
    /**
     * 
     */ 
    private static final long serialVersionUID = 8920597824668331209L; 
 
    private Integer id; 
     
    private Integer studentId; 
     
    private String name; 
     
    private Integer age; 
 
    public Integer getId() { 
        return id; 
    } 
 
    public void setId(Integer id) { 
        this.id = id; 
    } 
 
    public Integer getStudentId() { 
        return studentId; 
    } 
 
    public void setStudentId(Integer studentId) { 
        this.studentId = studentId; 
    } 
 
    public String getName() { 
        return name; 
    } 
 
    public void setName(String name) { 
        this.name = name; 
    } 
 
    public Integer getAge() { 
        return age; 
    } 
 
    public void setAge(Integer age) { 
        this.age = age; 
    } 
     
} 
User.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.entity; 
 
import java.io.Serializable; 
 
public class User implements Serializable{ 
     
    /**
     * 
     */ 
    private static final long serialVersionUID = 1L; 
     
 
    private Integer id; 
     
    private Integer userId; 
     
    private String name; 
     
    private Integer age; 
 
    public Integer getId() { 
        return id; 
    } 
 
    public void setId(Integer id) { 
        this.id = id; 
    } 
 
    public Integer getUserId() { 
        return userId; 
    } 
 
    public void setUserId(Integer userId) { 
        this.userId = userId; 
    } 
 
    public String getName() { 
        return name; 
    } 
 
    public void setName(String name) { 
        this.name = name; 
    } 
 
    public Integer getAge() { 
        return age; 
    } 
 
    public void setAge(Integer age) { 
        this.age = age; 
    } 
 
    @Override 
    public String toString() { 
        return "User [id=" + id + ", userId=" + userId + ", name=" + name + ", age=" + age + "]"; 
    } 
     
} 

StudentMapper.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.mapper; 
 
import java.util.List; 
 
import com.study.dangdang.sharding.jdbc.entity.Student; 
 
public interface StudentMapper { 
     
    Integer insert(Student s); 
     
    List<Student> findAll(); 
     
    List<Student> findByStudentIds(List<Integer> studentIds); 
 
} 

UserMapper.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.mapper; 
 
import java.util.List; 
 
import com.study.dangdang.sharding.jdbc.entity.User; 
 
public interface UserMapper { 
     
    Integer insert(User u); 
     
    List<User> findAll(); 
     
    List<User> findByUserIds(List<Integer> userIds); 
     
 
} 

StudentMapper.xml
[html] view plain copy
<?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="com.study.dangdang.sharding.jdbc.mapper.StudentMapper" > 
  <resultMap id="resultMap" type="com.study.dangdang.sharding.jdbc.entity.Student" > 
    <id column="id" property="id" jdbcType="INTEGER" /> 
    <result column="student_id" property="studentId" jdbcType="INTEGER" /> 
    <result column="name" property="name" jdbcType="VARCHAR" /> 
    <result column="age" property="age" jdbcType="INTEGER" /> 
  </resultMap> 
   
  <insert id="insert"> 
    insert into t_student (student_id,name,age) values (#{studentId},#{name},#{age}) 
  </insert> 
   
  <select id="findAll" resultMap="resultMap"> 
   select <include refid="columnsName"/> from t_student 
  </select> 
   
  <select id="findByStudentIds" resultMap="resultMap"> 
    select <include refid="columnsName"/> from t_student where student_id in ( 
     <foreach collection="list" item="item" separator=","> 
        #{item} 
     </foreach> 
    ) 
     
  </select> 
   
  <sql id="columnsName"> 
     id,student_id,name,age 
  </sql> 
   
    
   
</mapper> 

UserMapper.xml
[html] view plain copy
<?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="com.study.dangdang.sharding.jdbc.mapper.UserMapper" > 
  <resultMap id="resultMap" type="com.study.dangdang.sharding.jdbc.entity.User" > 
    <id column="id" property="id" jdbcType="INTEGER" /> 
    <result column="user_id" property="userId" jdbcType="INTEGER" /> 
    <result column="name" property="name" jdbcType="VARCHAR" /> 
    <result column="age" property="age" jdbcType="INTEGER" /> 
  </resultMap> 
   
  <insert id="insert"> 
    insert into t_user (user_id,name,age) values (#{userId},#{name},#{age}) 
  </insert> 
   
  <select id="findAll" resultMap="resultMap"> 
   select <include refid="columnsName"/> from t_user  
  </select> 
   
  <select id="findByUserIds" resultMap="resultMap"> 
    select <include refid="columnsName"/> from t_user where user_id in ( 
     <foreach collection="list" item="item" separator=","> 
        #{item} 
     </foreach> 
    ) 
     
  </select> 
   
  <sql id="columnsName"> 
     id,user_id,name,age 
  </sql> 
   
    
   
</mapper> 

StudentService.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.service; 
 
import com.study.dangdang.sharding.jdbc.entity.Student; 
 
public interface StudentService { 
 
    boolean insert(Student student); 
 
} 

UserService.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.service; 
 
import java.util.List; 
 
import com.study.dangdang.sharding.jdbc.entity.User; 
 
public interface UserService { 
     
    public boolean insert(User u); 
     
    public List<User> findAll(); 
     
    public List<User> findByUserIds(List<Integer> ids); 
     
    public void transactionTestSucess(); 
     
    public void transactionTestFailure() throws IllegalAccessException; 
 
} 

StudentServiceImpl.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.service.impl; 
 
import javax.annotation.Resource; 
 
import org.springframework.stereotype.Service; 
 
import com.study.dangdang.sharding.jdbc.entity.Student; 
import com.study.dangdang.sharding.jdbc.mapper.StudentMapper; 
import com.study.dangdang.sharding.jdbc.service.StudentService; 
 
@Service 
public class StudentServiceImpl implements StudentService{ 
     
    @Resource 
    public StudentMapper studentMapper; 
 
    public boolean insert(Student student) { 
        return studentMapper.insert(student) > 0 ? true : false; 
    } 
 
} 

UserServiceImpl.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.service.impl; 
 
import java.util.List; 
 
import javax.annotation.Resource; 
 
import org.springframework.stereotype.Service; 
import org.springframework.transaction.annotation.Propagation; 
import org.springframework.transaction.annotation.Transactional; 
 
import com.study.dangdang.sharding.jdbc.entity.Student; 
import com.study.dangdang.sharding.jdbc.entity.User; 
import com.study.dangdang.sharding.jdbc.mapper.StudentMapper; 
import com.study.dangdang.sharding.jdbc.mapper.UserMapper; 
import com.study.dangdang.sharding.jdbc.service.UserService; 
 
@Service 
@Transactional 
public class UserServiceImpl implements UserService { 
 
    @Resource 
    public UserMapper userMapper; 
     
    @Resource 
    public StudentMapper studentMapper; 
 
    public boolean insert(User u) { 
        return userMapper.insert(u) > 0 ? true :false; 
    } 
 
    public List<User> findAll() { 
        return userMapper.findAll(); 
    } 
 
    public List<User> findByUserIds(List<Integer> ids) { 
        return userMapper.findByUserIds(ids); 
    } 
 
    @Transactional(propagation=Propagation.REQUIRED) 
    public void transactionTestSucess() { 
        User u = new User(); 
        u.setUserId(13); 
        u.setAge(25); 
        u.setName("war3 1.27"); 
        userMapper.insert(u); 
         
        Student student = new Student(); 
        student.setStudentId(21); 
        student.setAge(21); 
        student.setName("hehe"); 
        studentMapper.insert(student); 
    } 
 
    @Transactional(propagation=Propagation.REQUIRED) 
    public void transactionTestFailure() throws IllegalAccessException { 
        User u = new User(); 
        u.setUserId(13); 
        u.setAge(25); 
        u.setName("war3 1.27 good"); 
        userMapper.insert(u); 
         
        Student student = new Student(); 
        student.setStudentId(21); 
        student.setAge(21); 
        student.setName("hehe1"); 
        studentMapper.insert(student); 
        throw new IllegalAccessException(); 
    } 
     
} 

StudentSingleKeyDatabaseShardingAlgorithm.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.algorithm; 
 
import java.util.Collection; 
import java.util.LinkedHashSet; 
 
import com.dangdang.ddframe.rdb.sharding.api.ShardingValue; 
import com.dangdang.ddframe.rdb.sharding.api.strategy.database.SingleKeyDatabaseShardingAlgorithm; 
import com.google.common.collect.Range; 
 
/**
* user表分库的逻辑函数
* @author lyncc
*
*/ 
public class StudentSingleKeyDatabaseShardingAlgorithm implements SingleKeyDatabaseShardingAlgorithm<Integer>{ 
 
    /**
     * sql 中关键字 匹配符为 =的时候，表的路由函数
     */ 
    public String doEqualSharding(Collection<String> availableTargetNames, ShardingValue<Integer> shardingValue) { 
        for (String each : availableTargetNames) { 
            if (each.endsWith(shardingValue.getValue() % 2 + "")) { 
                return each; 
            } 
        } 
        throw new IllegalArgumentException(); 
    } 
 
    /**
     * sql 中关键字 匹配符为 in 的时候，表的路由函数
     */ 
    public Collection<String> doInSharding(Collection<String> availableTargetNames, ShardingValue<Integer> shardingValue) { 
        Collection<String> result = new LinkedHashSet<String>(availableTargetNames.size()); 
        for (Integer value : shardingValue.getValues()) { 
            for (String tableName : availableTargetNames) { 
                if (tableName.endsWith(value % 2 + "")) { 
                    result.add(tableName); 
                } 
            } 
        } 
        return result; 
    } 
 
    /**
     * sql 中关键字 匹配符为 between的时候，表的路由函数
     */ 
    public Collection<String> doBetweenSharding(Collection<String> availableTargetNames, 
            ShardingValue<Integer> shardingValue) { 
        Collection<String> result = new LinkedHashSet<String>(availableTargetNames.size()); 
        Range<Integer> range = (Range<Integer>) shardingValue.getValueRange(); 
        for (Integer i = range.lowerEndpoint(); i <= range.upperEndpoint(); i++) { 
            for (String each : availableTargetNames) { 
                if (each.endsWith(i % 2 + "")) { 
                    result.add(each); 
                } 
            } 
        } 
        return result; 
    } 
 
} 
StudentSingleKeyTableShardingAlgorithm.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.algorithm; 
 
import java.util.Collection; 
import java.util.LinkedHashSet; 
 
import com.dangdang.ddframe.rdb.sharding.api.ShardingValue; 
import com.dangdang.ddframe.rdb.sharding.api.strategy.table.SingleKeyTableShardingAlgorithm; 
import com.google.common.collect.Range; 
 
/**
* 因为t_student实际表在每个库中只有2个，所以 %2
* @author lyncc
*
*/ 
public class StudentSingleKeyTableShardingAlgorithm implements SingleKeyTableShardingAlgorithm<Integer>{ 
 
    /**
     * sql 中 = 操作时，table的映射
     */ 
    public String doEqualSharding(Collection<String> tableNames, ShardingValue<Integer> shardingValue) { 
        for (String each : tableNames) { 
            if (each.endsWith(shardingValue.getValue() % 2 + "")) { 
                return each; 
            } 
        } 
        throw new IllegalArgumentException(); 
    } 
 
    /**
     * sql 中 in 操作时，table的映射
     */ 
    public Collection<String> doInSharding(Collection<String> tableNames, ShardingValue<Integer> shardingValue) { 
        Collection<String> result = new LinkedHashSet<String>(tableNames.size()); 
        for (Integer value : shardingValue.getValues()) { 
            for (String tableName : tableNames) { 
                if (tableName.endsWith(value % 2 + "")) { 
                    result.add(tableName); 
                } 
            } 
        } 
        return result; 
    } 
 
    /**
     * sql 中 between 操作时，table的映射
     */ 
    public Collection<String> doBetweenSharding(Collection<String> tableNames, 
            ShardingValue<Integer> shardingValue) { 
        Collection<String> result = new LinkedHashSet<String>(tableNames.size()); 
        Range<Integer> range = (Range<Integer>) shardingValue.getValueRange(); 
        for (Integer i = range.lowerEndpoint(); i <= range.upperEndpoint(); i++) { 
            for (String each : tableNames) { 
                if (each.endsWith(i % 2 + "")) { 
                    result.add(each); 
                } 
            } 
        } 
        return result; 
    } 
 
} 
UserSingleKeyDatabaseShardingAlgorithm.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.algorithm; 
 
import java.util.Collection; 
import java.util.LinkedHashSet; 
 
import com.dangdang.ddframe.rdb.sharding.api.ShardingValue; 
import com.dangdang.ddframe.rdb.sharding.api.strategy.database.SingleKeyDatabaseShardingAlgorithm; 
import com.google.common.collect.Range; 
 
/**
* user表分库的逻辑函数
* @author lyncc
*
*/ 
public class UserSingleKeyDatabaseShardingAlgorithm implements SingleKeyDatabaseShardingAlgorithm<Integer>{ 
 
    /**
     * sql 中关键字 匹配符为 =的时候，表的路由函数
     */ 
    public String doEqualSharding(Collection<String> availableTargetNames, ShardingValue<Integer> shardingValue) { 
        for (String each : availableTargetNames) { 
            if (each.endsWith(shardingValue.getValue() % 2 + "")) { 
                return each; 
            } 
        } 
        throw new IllegalArgumentException(); 
    } 
 
    /**
     * sql 中关键字 匹配符为 in 的时候，表的路由函数
     */ 
    public Collection<String> doInSharding(Collection<String> availableTargetNames, ShardingValue<Integer> shardingValue) { 
        Collection<String> result = new LinkedHashSet<String>(availableTargetNames.size()); 
        for (Integer value : shardingValue.getValues()) { 
            for (String tableName : availableTargetNames) { 
                if (tableName.endsWith(value % 2 + "")) { 
                    result.add(tableName); 
                } 
            } 
        } 
        return result; 
    } 
 
    /**
     * sql 中关键字 匹配符为 between的时候，表的路由函数
     */ 
    public Collection<String> doBetweenSharding(Collection<String> availableTargetNames, 
            ShardingValue<Integer> shardingValue) { 
        Collection<String> result = new LinkedHashSet<String>(availableTargetNames.size()); 
        Range<Integer> range = (Range<Integer>) shardingValue.getValueRange(); 
        for (Integer i = range.lowerEndpoint(); i <= range.upperEndpoint(); i++) { 
            for (String each : availableTargetNames) { 
                if (each.endsWith(i % 2 + "")) { 
                    result.add(each); 
                } 
            } 
        } 
        return result; 
    } 
 
} 
UserSingleKeyTableShardingAlgorithm.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc.algorithm; 
 
import java.util.Collection; 
import java.util.LinkedHashSet; 
 
import com.dangdang.ddframe.rdb.sharding.api.ShardingValue; 
import com.dangdang.ddframe.rdb.sharding.api.strategy.table.SingleKeyTableShardingAlgorithm; 
import com.google.common.collect.Range; 
 
public class UserSingleKeyTableShardingAlgorithm implements SingleKeyTableShardingAlgorithm<Integer>{ 
 
    /**
     * sql 中 = 操作时，table的映射
     */ 
    public String doEqualSharding(Collection<String> tableNames, ShardingValue<Integer> shardingValue) { 
        for (String each : tableNames) { 
            if (each.endsWith(shardingValue.getValue() % 3 + "")) { 
                return each; 
            } 
        } 
        throw new IllegalArgumentException(); 
    } 
 
    /**
     * sql 中 in 操作时，table的映射
     */ 
    public Collection<String> doInSharding(Collection<String> tableNames, ShardingValue<Integer> shardingValue) { 
        Collection<String> result = new LinkedHashSet<String>(tableNames.size()); 
        for (Integer value : shardingValue.getValues()) { 
            for (String tableName : tableNames) { 
                if (tableName.endsWith(value % 3 + "")) { 
                    result.add(tableName); 
                } 
            } 
        } 
        return result; 
    } 
 
    /**
     * sql 中 between 操作时，table的映射
     */ 
    public Collection<String> doBetweenSharding(Collection<String> tableNames, 
            ShardingValue<Integer> shardingValue) { 
        Collection<String> result = new LinkedHashSet<String>(tableNames.size()); 
        Range<Integer> range = (Range<Integer>) shardingValue.getValueRange(); 
        for (Integer i = range.lowerEndpoint(); i <= range.upperEndpoint(); i++) { 
            for (String each : tableNames) { 
                if (each.endsWith(i % 3 + "")) { 
                    result.add(each); 
                } 
            } 
        } 
        return result; 
    } 
 
} 

spring-database.xml
[html] view plain copy
<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring" 
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd 
        http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd 
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> 
         
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 
        <property name="locations"> 
            <list> 
                <value>classpath:config/resource/jdbc_dev.properties</value> 
            </list> 
        </property> 
    </bean> 
         
    <bean name="sharding_0" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> 
        <property name="url" value="${jdbc_url0}" /> 
        <property name="username" value="${jdbc_username0}" /> 
        <property name="password" value="${jdbc_password0}" /> 
<!--         <property name="driverClass" value="${jdbc_driver0}" /> --> 
        <!-- 初始化连接大小 --> 
        <property name="initialSize" value="0" /> 
        <!-- 连接池最大使用连接数量 --> 
        <property name="maxActive" value="20" /> 
        <!-- 连接池最小空闲 --> 
        <property name="minIdle" value="0" /> 
        <!-- 获取连接最大等待时间 --> 
        <property name="maxWait" value="60000" /> 
        <property name="validationQuery" value="${validationQuery}" /> 
        <property name="testOnBorrow" value="false" /> 
        <property name="testOnReturn" value="false" /> 
        <property name="testWhileIdle" value="true" /> 
        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> 
        <property name="timeBetweenEvictionRunsMillis" value="60000" /> 
        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> 
        <property name="minEvictableIdleTimeMillis" value="25200000" /> 
        <!-- 打开removeAbandoned功能 --> 
        <property name="removeAbandoned" value="true" /> 
        <!-- 1800秒，也就是30分钟 --> 
        <property name="removeAbandonedTimeout" value="1800" /> 
        <!-- 关闭abanded连接时输出错误日志 --> 
        <property name="logAbandoned" value="true" /> 
        <property name="filters" value="stat" /> 
    </bean> 
     
    <bean name="sharding_1" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> 
        <property name="url" value="${jdbc_url1}" /> 
        <property name="username" value="${jdbc_username1}" /> 
        <property name="password" value="${jdbc_password1}" /> 
<!--         <property name="driverClass" value="${jdbc_driver1}" /> --> 
        <!-- 初始化连接大小 --> 
        <property name="initialSize" value="0" /> 
        <!-- 连接池最大使用连接数量 --> 
        <property name="maxActive" value="20" /> 
        <!-- 连接池最小空闲 --> 
        <property name="minIdle" value="0" /> 
        <!-- 获取连接最大等待时间 --> 
        <property name="maxWait" value="60000" /> 
        <property name="validationQuery" value="${validationQuery}" /> 
        <property name="testOnBorrow" value="false" /> 
        <property name="testOnReturn" value="false" /> 
        <property name="testWhileIdle" value="true" /> 
        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> 
        <property name="timeBetweenEvictionRunsMillis" value="60000" /> 
        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> 
        <property name="minEvictableIdleTimeMillis" value="25200000" /> 
        <!-- 打开removeAbandoned功能 --> 
        <property name="removeAbandoned" value="true" /> 
        <!-- 1800秒，也就是30分钟 --> 
        <property name="removeAbandonedTimeout" value="1800" /> 
        <!-- 关闭abanded连接时输出错误日志 --> 
        <property name="logAbandoned" value="true" /> 
        <property name="filters" value="stat" /> 
    </bean> 
     
 
</beans> 

spring-sharding.xml
[html] view plain copy
<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring" 
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd 
        http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd 
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> 
         
    <context:component-scan base-package="com.study.dangdang.sharding.jdbc" /> 
     
     
     
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 
        <property name="basePackage" value="com.study.dangdang.sharding.jdbc.mapper"/> 
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> 
    </bean> 
     
    <!-- 配置sqlSessionFactory --> 
     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 
        <property name="dataSource" ref="shardingDataSource"/> 
        <property name="mapperLocations" value="classpath*:config/mapper/*Mapper.xml"/> 
    </bean> 
     
     
    <!-- 配置好dataSourceRulue,即对数据源进行管理 --> 
    <bean id="dataSourceRule" class="com.dangdang.ddframe.rdb.sharding.api.rule.DataSourceRule"> 
        <constructor-arg> 
            <map> 
                <entry key="sharding_0" value-ref="sharding_0"/> 
                <entry key="sharding_1" value-ref="sharding_1"/> 
            </map> 
        </constructor-arg> 
    </bean> 
     
    <!-- 对t_user表的配置，进行分库配置，逻辑表名为t_user，每个库有实际的三张表 --> 
    <bean id="userTableRule" class="com.dangdang.ddframe.rdb.sharding.api.rule.TableRule"> 
        <constructor-arg value="t_user" index="0"/> 
        <constructor-arg index="1"> 
            <list> 
                <value>t_user_0</value> 
                <value>t_user_1</value> 
                <value>t_user_2</value> 
            </list> 
        </constructor-arg> 
        <constructor-arg index="2" ref="dataSourceRule"/> 
        <constructor-arg index="3" ref="userDatabaseShardingStrategy"/> 
        <constructor-arg index="4" ref="userTableShardingStrategy"/> 
    </bean> 
     
    <!-- t_user分库策略 --> 
    <bean id="userDatabaseShardingStrategy" class="com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy"> 
        <constructor-arg index="0" value="user_id"/> 
        <constructor-arg index="1"> 
            <bean class="com.study.dangdang.sharding.jdbc.algorithm.UserSingleKeyDatabaseShardingAlgorithm" /> 
        </constructor-arg> 
    </bean> 
     
    <!-- t_user 分表策略 --> 
    <bean id="userTableShardingStrategy" class="com.dangdang.ddframe.rdb.sharding.api.strategy.table.TableShardingStrategy"> 
        <constructor-arg index="0" value="user_id"/> 
        <constructor-arg index="1"> 
            <bean class="com.study.dangdang.sharding.jdbc.algorithm.UserSingleKeyTableShardingAlgorithm" /> 
        </constructor-arg> 
    </bean> 
     
     
     
      <!-- 对t_student表的配置，进行分库配置，逻辑表名为t_user，每个库有实际的三张表 --> 
    <bean id="studentTableRule" class="com.dangdang.ddframe.rdb.sharding.api.rule.TableRule"> 
        <constructor-arg value="t_student" index="0"/> 
        <constructor-arg index="1"> 
            <list> 
                <value>t_student_0</value> 
                <value>t_student_1</value> 
            </list> 
        </constructor-arg> 
        <constructor-arg index="2" ref="dataSourceRule"/> 
        <constructor-arg index="3" ref="studentDatabaseShardingStrategy"/> 
        <constructor-arg index="4" ref="studentTableShardingStrategy"/> 
    </bean> 
     
     <!-- t_student分库策略 --> 
    <bean id="studentDatabaseShardingStrategy" class="com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy"> 
        <constructor-arg index="0" value="student_id"/> 
        <constructor-arg index="1"> 
            <bean class="com.study.dangdang.sharding.jdbc.algorithm.StudentSingleKeyDatabaseShardingAlgorithm" /> 
        </constructor-arg> 
    </bean> 
     
    <!-- t_student 分表策略 --> 
    <bean id="studentTableShardingStrategy" class="com.dangdang.ddframe.rdb.sharding.api.strategy.table.TableShardingStrategy"> 
        <constructor-arg index="0" value="student_id"/> 
        <constructor-arg index="1"> 
            <bean class="com.study.dangdang.sharding.jdbc.algorithm.StudentSingleKeyTableShardingAlgorithm" /> 
        </constructor-arg> 
    </bean> 
     
     
    <!-- 构成分库分表的规则 传入数据源集合和每个表的分库分表的具体规则 --> 
    <bean id="shardingRule" class="com.dangdang.ddframe.rdb.sharding.api.rule.ShardingRule"> 
        <constructor-arg index="0" ref="dataSourceRule"/> 
        <constructor-arg index="1"> 
            <list> 
                <ref bean="userTableRule"/> 
                <ref bean="studentTableRule"/> 
            </list> 
        </constructor-arg> 
    </bean> 
     
    <!-- 对datasource进行封装 --> 
    <bean id="shardingDataSource" class="com.dangdang.ddframe.rdb.sharding.api.ShardingDataSource"> 
        <constructor-arg ref="shardingRule"/> 
    </bean> 
 
    <!-- 事务 --> 
    <bean id="transactionManager" 
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 
        <property name="dataSource" ref="shardingDataSource" /> 
    </bean> 
 
    <tx:annotation-driven transaction-manager="transactionManager" /> 
         
 
</beans> 
jdbc_dev.properties
[plain] view plain copy
jdbc_driver0   = com.mysql.jdbc.Driver 
jdbc_url0      = jdbc:mysql://localhost:3306/sharding_0?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true 
jdbc_username0 = root 
jdbc_password0 =  
 
jdbc_driver1   = com.mysql.jdbc.Driver 
jdbc_url1      = jdbc:mysql://localhost:3306/sharding_1?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true 
jdbc_username1 = root 
jdbc_password1 =  
 
 
validationQuery=SELECT 1 

log4j.xml
[html] view plain copy
<?xml version="1.0" encoding="UTF-8"?>     
<!DOCTYPE log4j:configuration PUBLIC "-//APACHE//DTD LOG4J 1.2//EN" "log4j.dtd">   
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">   
  <!-- [控制台STDOUT] -->   
  <appender name="console" class="org.apache.log4j.ConsoleAppender">   
     <param name="encoding" value="GBK" />   
     <param name="target" value="System.out" />   
     <layout class="org.apache.log4j.PatternLayout">   
       <param name="ConversionPattern" value="%-5p %c{2} - %m%n" />   
     </layout>   
  </appender>   
   
  <!-- [公共Appender] -->   
  <appender name="DEFAULT-APPENDER" class="org.apache.log4j.DailyRollingFileAppender">   
     <param name="File" value="${webapp.root}/logs/common-default.log" />   
     <param name="Append" value="true" />   
     <param name="encoding" value="GBK" />   
     <param name="DatePattern" value="'.'yyyy-MM-dd'.log'" />   
     <layout class="org.apache.log4j.PatternLayout">   
    <param name="ConversionPattern" value="%d %-5p %c{2} - %m%n" />   
     </layout>   
   </appender>   
   
   <!-- [错误日志APPENDER] -->   
   <appender name="ERROR-APPENDER" class="org.apache.log4j.DailyRollingFileAppender">   
     <param name="File" value="${webapp.root}/logs/common-error.log" />   
     <param name="Append" value="true" />   
     <param name="encoding" value="GBK" />   
     <param name="threshold" value="error" />   
     <param name="DatePattern" value="'.'yyyy-MM-dd'.log'" />   
     <layout class="org.apache.log4j.PatternLayout">   
        <param name="ConversionPattern" value="%d %-5p %c{2} - %m%n" />   
     </layout>   
   </appender>   
   
   <!-- [组件日志APPENDER] -->   
   <appender name="COMPONENT-APPENDER"   
class="org.apache.log4j.DailyRollingFileAppender">   
     <param name="File" value="${webapp.root}/logs/logistics-component.log" />   
     <param name="Append" value="true" />   
     <param name="encoding" value="GBK" />   
     <param name="DatePattern" value="'.'yyyy-MM-dd'.log'" />   
     <layout class="org.apache.log4j.PatternLayout">   
    <param name="ConversionPattern" value="%d %-5p %c{2} - %m%n" />   
     </layout>   
   </appender>   
   
   <!-- [组件日志] -->   
   <logger name="LOGISTICS-COMPONENT">   
      <level value="${loggingLevel}" />   
      <appender-ref ref="COMPONENT-APPENDER" />   
      <appender-ref ref="ERROR-APPENDER" />   
   </logger>   
   
   <!-- Root Logger -->   
   <root>   
       <level value="${rootLevel}"></level>   
       <appender-ref ref="DEFAULT-APPENDER" />   
       <appender-ref ref="ERROR-APPENDER" />   
       <appender-ref ref="console" />  
       <appender-ref ref="COMPONENT-APPENDER" />  
   </root>   
</log4j:configuration>   

好了，到此为止，所有代码都贴出来了，我们开始测试：
ShardingJdbcMybatisTest.java
[java] view plain copy
package com.study.dangdang.sharding.jdbc; 
 
import java.util.Arrays; 
import java.util.List; 
 
import javax.annotation.Resource; 
 
import org.junit.Assert; 
import org.junit.Test; 
import org.junit.runner.RunWith; 
import org.springframework.test.context.ContextConfiguration; 
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; 
 
import com.study.dangdang.sharding.jdbc.entity.Student; 
import com.study.dangdang.sharding.jdbc.entity.User; 
import com.study.dangdang.sharding.jdbc.service.StudentService; 
import com.study.dangdang.sharding.jdbc.service.UserService; 
 
@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(locations = { "classpath*:config/spring/spring-database.xml", 
        "classpath*:config/spring/spring-sharding.xml" }) 
public class ShardingJdbcMybatisTest { 
 
    @Resource 
    public UserService userService; 
     
    @Resource 
    public StudentService studentService; 
 
    @Test 
    public void testUserInsert() { 
        User u = new User(); 
        u.setUserId(11); 
        u.setAge(25); 
        u.setName("github"); 
        Assert.assertEquals(userService.insert(u), true); 
    } 
     
    @Test 
    public void testStudentInsert() { 
        Student student = new Student(); 
        student.setStudentId(21); 
        student.setAge(21); 
        student.setName("hehe"); 
        Assert.assertEquals(studentService.insert(student), true); 
    } 
 
    @Test 
    public void testFindAll(){ 
        List<User> users = userService.findAll(); 
        if(null != users && !users.isEmpty()){ 
            for(User u :users){ 
                System.out.println(u); 
            } 
        } 
    } 
     
    @Test 
    public void testSQLIN(){ 
        List<User> users = userService.findByUserIds(Arrays.asList(2,10,1)); 
        if(null != users && !users.isEmpty()){ 
            for(User u :users){ 
                System.out.println(u); 
            } 
        } 
    } 
     
    @Test 
    public void testTransactionTestSucess(){ 
        userService.transactionTestSucess(); 
    } 
     
    @Test(expected = IllegalAccessException.class) 
    public void testTransactionTestFailure() throws IllegalAccessException{ 
        userService.transactionTestFailure(); 
    } 
     
     
} 
testUserInsert的运行结果是：

替换了我们sql中的数据源和表名

testFindAll的运行结果是：

注意：看日记，一共发出了6条sql，也就是说每个库的每个表都发出一条sql，在平常开发中，这种sql还是少执行，会很大程度上降低性能

testSQLIN的运行结果是：

注意：根据id的路由规则，定位到表后，其实此时已经知道该表中的id了，没必要用3个参数的in了，sharding-jdbc这边还不是很智能的，虽然IN也是支持索引的~有待更进一步的优化


最后事务测试也是没有问题的~
大家自己动手来一遍吧~

代码下载地址：http://download.csdn.NET/detail/linuu/9466514