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如何解决shardingsphere报错Missing the data source name:‘null‘

2024-11-04 08:44:21 作者：一盏红烛，一杯烧酒

使用ShardingSphere进行分库操作时,如果遇到“Missing the datasource name: ‘null’”的错误,通常是因为所操作的表没有配置相关的路由信息,例如,如果在properties中仅配置了health_record和health_task的路由规则

问题描述

使用shardingsphere 尝试进行分库时，报错 Missing the data source name: ‘null’

详细错误内容

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. Cause: java.lang.IllegalStateException: Missing the data source name: 'null'### The error may involve defaultParameterMap### The error occurred while setting parameters### SQL: INSERT INTO user (user_id, user_name) VALUES (?, ?)### Cause: java.lang.IllegalStateException: Missing the data source name: 'null'

at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:79) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:447) at com.sun.proxy.$Proxy60.insert(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:279) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:57) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59) at com.sun.proxy.$Proxy65.addEntity(Unknown Source) at com.tianyilan.shardingsphere.demo.service.impl.UserServiceImpl.insertUsers(UserServiceImpl.java:57) at com.tianyilan.shardingsphere.demo.service.impl.UserServiceImpl.processUsers(UserServiceImpl.java:31) at com.tianyilan.shardingsphere.demo.UserServiceTest.testProcessUsers(UserServiceTest.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:73) at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83) at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. Cause: java.lang.IllegalStateException: Missing the data source name: 'null'### The error may involve defaultParameterMap### The error occurred while setting parameters### SQL: INSERT INTO user (user_id, user_name) VALUES (?, ?)### Cause: java.lang.IllegalStateException: Missing the data source name: 'null' at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:200) at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:185) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:434) ... 38 moreCaused by: java.lang.IllegalStateException: Missing the data source name: 'null' at com.google.common.base.Preconditions.checkState(Preconditions.java:197) at org.apache.shardingsphere.shardingjdbc.jdbc.adapter.AbstractConnectionAdapter.getConnections(AbstractConnectionAdapter.java:110) at org.apache.shardingsphere.shardingjdbc.executor.PreparedStatementExecutor$1.getConnections(PreparedStatementExecutor.java:79) at org.apache.shardingsphere.core.execute.sql.prepare.SQLExecutePrepareTemplate.getSQLExecuteGroups(SQLExecutePrepareTemplate.java:89) at org.apache.shardingsphere.core.execute.sql.prepare.SQLExecutePrepareTemplate.getSynchronizedExecuteUnitGroups(SQLExecutePrepareTemplate.java:67) at org.apache.shardingsphere.core.execute.sql.prepare.SQLExecutePrepareTemplate.getExecuteUnitGroups(SQLExecutePrepareTemplate.java:59) at org.apache.shardingsphere.shardingjdbc.executor.PreparedStatementExecutor.obtainExecuteGroups(PreparedStatementExecutor.java:75) at org.apache.shardingsphere.shardingjdbc.executor.PreparedStatementExecutor.init(PreparedStatementExecutor.java:70) at org.apache.shardingsphere.shardingjdbc.jdbc.core.statement.ShardingPreparedStatement.initPreparedStatementExecutor(ShardingPreparedStatement.java:198) at org.apache.shardingsphere.shardingjdbc.jdbc.core.statement.ShardingPreparedStatement.execute(ShardingPreparedStatement.java:171) at org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:46) at org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:74) at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:50) at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117) at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198) ... 44 more

解决方法

你所插入的表没有配置相关的路由信息。

例如我的properties内容如下

spring.shardingsphere.datasource.names=ds0,ds1
spring.shardingsphere.datasource.ds0.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.ds0.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.ds0.url = jdbc:mysql://localhost:3306/shardingsphere_1
spring.shardingsphere.datasource.ds0.username=root
spring.shardingsphere.datasource.ds0.password=123
spring.shardingsphere.datasource.ds1.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.ds1.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.ds1.url = jdbc:mysql://localhost:3306/shardingsphere_2
spring.shardingsphere.datasource.ds1.username=root
spring.shardingsphere.datasource.ds1.password=123
spring.shardingsphere.sharding.default-database-strategy.inline.sharding-column= user_id
spring.shardingsphere.sharding.default-database-strategy.inline.algorithm-expression= ds$->{user_id %2}

spring.shardingsphere.sharding.binding-tables=health_record,health_task
spring.shardingsphere.sharding.broadcast-tables=health_level

#spring.shardingsphere.sharding.tables.user.actual-data-nodes=ds$->{0..1}.user

spring.shardingsphere.sharding.tables.health_record.actual-data-nodes=ds$->{0..1}.health_record
spring.shardingsphere.sharding.tables.health_record.key-generator.column=record_id
spring.shardingsphere.sharding.tables.health_record.key-generator.type=SNOWFLAKE
spring.shardingsphere.sharding.tables.health_record.key-generator.props.worker.id=33
spring.shardingsphere.sharding.tables.health_task.actual-data-nodes=ds$->{0..1}.health_task
spring.shardingsphere.sharding.tables.health_task.key-generator.column=task_id
spring.shardingsphere.sharding.tables.health_task.key-generator.type=SNOWFLAKE
spring.shardingsphere.sharding.tables.health_task.key-generator.props.worker.id=33

#logging.level.com.tianyilan.shardingsphere.demo.entity=debug
spring.shardingsphere.props.sql.show=true

我配置了 health_record,health_task 的路由规则，但是我测试数据插入的表是 user表。

由于没有配置，所以定位不了数据库。

如果更改一下，变成