SpringBoot+MyBatis+Sharding-jdbc单建单库分表的操作
SpringBoot +MyBatis + Sharding-jdbc单建单库分表的操作
项⽬在启动的过程中，报出了数据源循环依赖，解决⽅案需要排除数据源本⾝的⾃动配置：@SpringBootApplication(exclude={DataSourceAutoConfiguration.class})
第⼀步：新建⼀个项⽬ singledata-mutipletable-sharding-jdbc:
第⼆步：导⼊依赖：如下所⽰：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="/POM/4.0.0"
xmlns:xsi="/2001/XMLSchema-instance"
xsi:schemaLocation="/POM/4.0.0 /xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>davidtao</groupId>
<artifactId>singledata-mutipletable-sharding-jdbc</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
&porting.outEncoding>UTF-8</porting.outEncoding>
<java.verison>1.8</java.verison>
<aop.version>1.5.14.RELEASE</aop.version>
</properties>
<dependencies>
<dependency>
springboot是啥<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.6.1</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.6.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.0.6</version>
</dependency>
<!--yinrushading-jdbc-->
<dependency>
<dependency>
<groupId>io.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-boot-starter</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>io.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-namespace</artifactId>
<version>3.0.0</version>
</dependency>
</dependencies>
<build>
<!--build 的⽬标，默认为 install-->
<defaultGoal>compile</defaultGoal>
<!--directory：build ⽬标⽂件的存放⽬录，默认在 ${basedir}/target ⽬录-->
<directory>${project.basedir}/target</directory>
<!--finalName：build ⽬标⽂件的⽂件名，默认情况下为 ${artifactId}-${version}-->
<finalName>${project.artifactId}</finalName>
<plugins>
<!--注释该插件，mvn package 时不会进⾏ repackage ⽣成可以直接运⾏的 jar-->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<!--热部署需要开启该选项-->
<configuration>
<fork>true</fork>
</configuration>
</plugin>
<!--maven-surefire-plugin 是 maven ⾥执⾏测试⽤例的插件，不显式配置就会⽤默认配置--> <!--⼀般我们执⾏ maven 打包命令 mvn package 前 maven 会默认执⾏ mvn test 命令.--> <plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<!--在打包时会跳过单元测试-->
<skip>true</skip>
<!--<skipTests>true</skipTests>-->
<!--测试失败时忽略，不停⽌打包-->
<!--<testFailureIgnore>true</testFailureIgnore>-->
</configuration>
</plugin>
</plugins>
</build>
</project>
第三步：进⾏数据源的配置(⾥⾯包含了sharding的配置) package fig;
import fig.GlobalConfig;
import sion.injector.LogicSqlInjector;
import sion.plugins.PaginationInterceptor;
import sion.plugins.PerformanceInterceptor;
import sion.plugins.SqlExplainInterceptor;
import sion.spring.MybatisSqlSessionFactoryBean;
import com.dangdang.ddframe.rdb.sharding.api.ShardingDataSourceFactory;
import com.dangdang.ddframe.rdb.sharding.api.rule.BindingTableRule;
import com.dangdang.ddframe.rdb.sharding.api.rule.DataSourceRule;
import com.dangdang.ddframe.rdb.sharding.api.rule.ShardingRule;
import com.dangdang.ddframe.rdb.sharding.api.rule.TableRule;
import com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy;
import com.dangdang.ddframe.rdb.sharding.api.strategy.database.DatabaseShardingStrategy; import com.dangdang.ddframe.rdb.sharding.api.strategy.table.TableShardingStrategy; import com.zaxxer.hikari.HikariDataSource;
import david.soft.algorithm.ModuloTableShardingAlgorithm;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
batis.spring.SqlSessionFactoryBean;
batis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.jdbc.DataSourceBuilder;
import t.annotation.Bean;
import t.annotation.Configuration;
import t.annotation.Primary;
import nv.Environment;
import io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.*;
@Configuration
public class DataSourceConfig {
@Autowired
private Environment environment;
private String url;
private String username;
private String password;
private String driverClassName;
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getDriverClassName() {
return driverClassName;
}
public void setDriverClassName(String driverClassName) {
this.driverClassName = driverClassName;
this.driverClassName = driverClassName;
}
/**
*
* peizhishujuyuan
*/
@Bean(value="sharding")
public DataSource getDataSource(){
HikariDataSource hikariDataSource = DataSourceBuilder
.create()
.url(url)
.driverClassName(driverClassName)
.username(username)
.password(password)
.type(HikariDataSource.class)
.
build();
return hikariDataSource;
}
/**
* 配置数据源规则，即将单个数据源交给sharding-jdbc管理，并且可以设置默认的数据源，
* 当表没有配置分库规则时会使⽤默认的数据源
* @param dataSource0
* @return
*/
@Bean
public DataSourceRule dataSourceRule(@Qualifier("sharding") DataSource dataSource0){
Map<String, DataSource> dataSourceMap = new HashMap<>(); //设置分库映射
dataSourceMap.put("dataSource0", dataSource0);
//设置默认库，两个库以上时必须设置默认库。默认库的数据源名称必须是dataSourceMap的key之⼀
//这⾥我修改成了⼀个库了，我准备的是单库分表
return new DataSourceRule(dataSourceMap,"dataSource0");
}
/**
* 配置数据源策略和表策略，具体策略需要⾃⼰实现
* @param dataSourceRule
* @return
*/
@Bean
public ShardingRule shardingRule(DataSourceRule dataSourceRule){
//具体分库分表策略
TableRule orderTableRule = TableRule.builder("t_order")
.actualTables(Arrays.asList("t_order_0", "t_order_1"))
.tableShardingStrategy(new TableShardingStrategy("order_id", new ModuloTableShardingAlgorithm()))
.dataSourceRule(dataSourceRule)
.build();
//绑定表策略，在查询时会使⽤主表策略计算路由的数据源，因此需要约定绑定表策略的表的规则需要⼀致，可以⼀定程度提⾼效率 List<BindingTableRule> bindingTableRules = new ArrayList<BindingTableRule>();
bindingTableRules.add(new BindingTableRule(Arrays.asList(orderTableRule)));
return ShardingRule.builder()
.dataSourceRule(dataSourceRule)
.tableRules(Arrays.asList(orderTableRule))
.bindingTableRules(bindingTableRules)
.tableShardingStrategy(new TableShardingStrategy("order_id", new ModuloTableShardingAlgorithm()))
.build();
}
/**
* 创建sharding-jdbc的数据源DataSource，MybatisAutoConfiguration会使⽤此数据源
* @param shardingRule
* @return
* @throws SQLException
*/
*/
@Bean(name="dataSource")
public DataSource shardingDataSource(ShardingRule shardingRule) throws SQLException {
ateDataSource(shardingRule);
}
/**
* 需要⼿动配置事务管理器
* @param dataSource
* @return
*/
@Bean
public DataSourceTransactionManager transactitonManager(@Qualifier("dataSource") DataSource dataSource){
return new DataSourceTransactionManager(dataSource);
}
@Bean(name = "shardingSqlSessionFactory")
@Primary
public SqlSessionFactory shardingSqlSessionFactory(@Qualifier("dataSource") DataSource dataSource) throws Exception {
MybatisSqlSessionFactoryBean bean = new MybatisSqlSessionFactoryBean();
bean.setDataSource(dataSource);
bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mybatis/mapper/*.xml"));
bean.setPlugins(new Interceptor[]{
//这个插件⼲啥⽤的，注册分页插件
new PaginationInterceptor(),
//这个插件⼲啥⽤的，注册性能分析插件
new PerformanceInterceptor(),
//这个插件⼲啥⽤的，注册SQL 执⾏分析
new SqlExplainInterceptor()
});
/
/这⾥⼀般设置包的实体类的位置 <property name="typeAliasesPackage" value="com.xiaomu.**.model"/>
bean.setTypeAliasesPackage("david.soft");
GlobalConfig globalConfig = new GlobalConfig();
//LogicSqlInjector -> 逻辑sql处理器, (逻辑删除)
globalConfig.setSqlInjector(new LogicSqlInjector());
//全局配置
globalConfig.setDbConfig(new GlobalConfig.DbConfig());
bean.setGlobalConfig(globalConfig);
Object();
}
@Bean(name = "shardingSqlSessionTemplate")
@Primary
public SqlSessionTemplate shardingSqlSessionTemplate(@Qualifier("shardingSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Excep tion {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
第四步：最后的controller层，service层，mapper层，算法的编写，看我的github：需要如果需要密码，请留⾔。
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