使用foreach与mybatis进行批量插入

Question

我正在使用mybatis，我想将ArrayList插入到某个表中。
可以在mapper中使用foreach，这最终会得到oracle异常ORA_00933。
这是mybatis映射器：

 <insert id="batchInsert" parameterType="java.util.List"> insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values <foreach collection="list" item="model" index="index" separator=","> (#{model.role_id}, #{model.permissiongroup_id}) </foreach> </insert> 

 org.springframework.jdbc.BadSqlGrammarException: ### Error updating database. Cause: java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束### The error may involve com.gaotime.platform.system.mapper.RolePermissiongroupMapper.batchInsert-Inline ### The error occurred while setting parameters ### SQL: insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values (?, ?) , (?, ?) , (?, ?) ### Cause: java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束at org.springframework.jdbc.support.SQLExceptionSubclassTranslator.doTranslate(SQLExceptionSubclassTranslator.java:95) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80) at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:71) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:364) at com.sun.proxy.$Proxy5.insert(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:236) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:51) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52) at com.sun.proxy.$Proxy15.batchInsert(Unknown Source) at com.gaotime.platform.system.service.RolePermissiongroupService.batchInsert(RolePermissiongroupService.java:18) at com.gaotime.platform.system.action.RolePermissiongroupAction.execute(RolePermissiongroupAction.java:54) at com.gaotime.platform.handler.MqMessageHandler.handle(MqMessageHandler.java:20) at unitask.ums.activemq.HandlerThread.run(HandlerThread.java:51) at java.lang.Thread.run(Unknown Source) Caused by: java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:439) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:395) at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:802) at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:436) at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:186) at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:521) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:205) at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1008) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1307) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3449) at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:3550) at oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(OraclePreparedStatementWrapper.java:1374) at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.execute(NewProxyPreparedStatement.java:989) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:62) at com.sun.proxy.$Proxy27.execute(Unknown Source) at org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:44) at org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:69) at org.apache.ibatis.executor.ReuseExecutor.doUpdate(ReuseExecutor.java:50) at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:105) at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:71) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:152) at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:141) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:354) 

请帮帮我，谢谢

另一个映射器配置

 <insert id="batchInsert" parameterType="java.util.List"> <foreach collection="list" item="model" index="index" separator=","> insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values (#{model.role_id}, #{model.permissiongroup_id}) </foreach> </insert> 

我收到了这条消息

 org.springframework.jdbc.BadSqlGrammarException: ### Error updating database. Cause: java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束### The error may involve com.gaotime.platform.system.mapper.RolePermissiongroupMapper.batchInsert-Inline ### The error occurred while setting parameters ### SQL: insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values (?, ?) , insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values (?, ?) , insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values (?, ?) ### Cause: java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: ORA-00933: SQL 命令未正确结束 

这是静态插入语句

 <insert id="batchInsert" parameterType="java.util.List"> <!-- <foreach collection="list" item="model" index="index" separator=";"> insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values (#{model.role_id,jdbcType=NUMERIC}, #{model.permissiongroup_id,jdbcType=NUMERIC}) </foreach> --> insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values(5,5); insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values(6,6) </insert> 

和例外

 19:00:21,531 DEBUG Thread-11 RolePermissiongroupMapper.batchInsert:139 - ==> Preparing: insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values(5,5); insert into SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id) values(6,6) 19:00:21,535 DEBUG Thread-11 RolePermissiongroupMapper.batchInsert:139 - ==> Parameters: 19:00:21,553 DEBUG Thread-11 impl.NewPooledConnection:430 - com.mchange.v2.c3p0.impl.NewPooledConnection@699238ad handling a throwable. java.sql.SQLSyntaxErrorException: ORA-00911: 无效字符 

为了更新，我仍然需要帮助。 过来谷歌小组

Answer 1

在Mybatis中插入 foreach不是批处理 ，这是一个单独的（可能变成巨大的）SQL语句，这带来了一些缺点：

• 某些数据库如Oracle在这里不支持。
• 在相关情况下：将插入大量记录，并且将命中数据库配置限制（默认情况下每个语句大约2000个参数），如果语句本身变得太大，最终可能会出现DB堆栈错误。

不能在mybatis XML中对集合进行迭代。 只需在Java Foreach循环中执行一个简单的Insert语句。 最重要的是会话Executor类型 。

SqlSession session = sessionFactory.openSession(ExecutorType.BATCH);
for (Model model : list) {
    session.insert("insertStatement", model);
}
session.flushStatements();

我认为在这里使用ExecutorType.REUSE而不刷新语句就足够了。

与默认的ExecutorType.SIMPLE不同，语句将准备一次并为每个要插入的记录执行。

Answer 2

尝试提取foreach（并更改分隔符）：

<insert id="batchInsert" parameterType="java.util.List">
  <foreach collection="list" item="model" index="index" separator=";">
    insert into SYS_ROLES_PERMISSIONGROUP
    (role_id, permissiongroup_id)
    values   
    (#{model.role_id}, #{model.permissiongroup_id})
  </foreach>
</insert>

我认为您当前的代码为每个元素创建了一个新的值角色，但是只有一个insert语句（这不是您想要的，您希望为每个元素插入一个）

Answer 3

Oracle不支持

插入xxx值（xxx，xxx），（xxx，xxx）

也许你可以像这样使用insert

    <insert id="batchInsert">
    INSERT ALL
    <foreach collection="list" item="model">
        INTO
        SYS_ROLES_PERMISSIONGROUP (role_id, permissiongroup_id)
        VALUES
        (#{model.role_id}, #{model.permissiongroup_id})
    </foreach>
   </insert>