my batis 에서 foreach 대량 insert 이상 문 제 를 해결 합 니 다.

17646 단어 mybatisforeachinsert
이상 하 다

org.springframework.jdbc.BadSqlGrammarException: 
### Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO t_user_role(userid,roleid)VALUES(1,3)
		 ; 
			INSERT INTO t_user_ro' at line 3
### The error may involve defaultParameterMap
### The error occurred while setting parameters
### SQL: INSERT INTO t_user_role(userid,roleid)VALUES(?,?) ;  INSERT INTO t_user_role(userid,roleid)VALUES(?,?) ;  INSERT INTO t_user_role(userid,roleid)VALUES(?,?)
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO t_user_role(userid,roleid)VALUES(1,3)
		 ; 
			INSERT INTO t_user_ro' at line 3
; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO t_user_role(userid,roleid)VALUES(1,3)
		 ; 
			INSERT INTO t_user_ro' at line 3
	at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:231)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)
	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371)
	at com.sun.proxy.$Proxy13.insert(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:240)
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:51)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
	at com.sun.proxy.$Proxy14.addRoles(Unknown Source)
	at com.atguigu.atcrowdfunding.manager.service.impl.UserServiceImpl.addRoles(UserServiceImpl.java:139)
	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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
	at com.sun.proxy.$Proxy17.addRoles(Unknown Source)
	at com.atguigu.atcrowdfunding.manager.controller.UserController.doAddRoles(UserController.java:271)
	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.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:931)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:833)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:807)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1526)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1482)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Unknown Source)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO t_user_role(userid,roleid)VALUES(1,3)
		 ; 
			INSERT INTO t_user_ro' at line 3
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
	at com.mysql.jdbc.Util.getInstance(Util.java:387)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:941)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3870)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3806)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2470)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2617)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2550)
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)
	at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1192)
	at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.execute(NewProxyPreparedStatement.java:823)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:62)
	at com.sun.proxy.$Proxy24.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.SimpleExecutor.doUpdate(SimpleExecutor.java:48)
	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:358)
	... 65 more
이상 분석
mapper.xml 로 인 한 오류

 <insert id="addRoles">
 <foreach collection="data.ids" item="id" separator=";">
 INSERT INTO t_user_role(userid,roleid)VALUES(#{userId},#{id})
 </foreach>
 </insert>
이상 설

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO t_user_role(userid,roleid)VALUES(1,3)
먼저 sql 문장의 문제 라 고 생각 하지만 sqlyog 테스트 를 통 해 문제 가 없 음 을 발견 하 였 습 니 다.
나중에 발견 한 것 은 데이터베이스 가 여러 문장 을 한데 묶 은 조작 에 대해 지원 하지 않 는 문제 이다
해결 방법
jdbcUrl 에 allow MultiQueries=true 를 추가 하면 해결 할 수 있 습 니 다.

jdbc.url=jdbc:mysql://localhost:3306/atcrowdfunding?allowMultiQueries=true&rewriteBatchedStatements=true&useUnicode=true&characterEncoding=utf8
추가:Mybatis foreach 내장 대량 삽입 맵 목록 데이터
방식 1:
Teacher 와 Students 를 예 로 들 면 둘 은 한 쌍 의 다 관계 이다.**

Teacher 실체 클래스

private String tid;
private String tName;
private List<Student> studentList; 
public String getTid() {
 return tid;
}
 
public void setTid(String tid) {
 this.tid = tid;
}
 
public String gettName() {
 return tName;
}
 
public void settName(String tName) {
 this.tName = tName;
}
 
public List<Student> getStudentList() {
 return studentList;
}
 
public void setStudentList(List<Student> studentList) {
 this.studentList = studentList;
}
학생 실체 클래스

private String sid;
private String sName;
public String getSid() {
 return sid;
}
 
public void setSid(String sid) {
 this.sid = sid;
}
 
public String getsName() {
 return sName;
}
 
public void setsName(String sName) {
 this.sName = sName;
}
응용 장면:선생님 의 service 층 에 선생님 데 이 터 를 대량으로 삽입 합 니 다.

int nums=1000;
  
 //  teacher list
 List<Teacher> teaList=new ArrayList<Teacher>();
 //     excel            excel row  
 for(int rowi=0;rowi<nums;rowi++){
  Teacher teacher=new Teacher();
  teacher.settName("xxx");
 
  List<Student> stuList=new ArrayList<Student>();
  Student student=new Student();
  //    Students  
  for(xxx){
   stuList.add(student);
  }
  // student   teacher  
  teacher.setStudentList(stuList);
 
  // teacher  list
  teaList.add(teacher);
 }
 //         
 teacherMapper.batchInsertTeacher(teaList);
 //    teacher         id 
 //         list(    ) map
 Map<String,List<Student>> stuMap=new HashMap<>();
 //                
 for(Teacher tea:teaList){
  //                  （                      ）
  if(tea.getStudentList()!=null&&tea.getStudentList().size()>0){
   stuMap.put(tea.getTid(),tea.getStudentList());
  }
 }
 //    service         
 studentService.batchInsertStudent(stuMap);
학생 Mapper 인터페이스 파일

int batchInsertStudent(@Param("stuMap") Map<String,List<Student>> stuMap);
student mapper.xml 파일(쓰기 1:)

<insert id="batchInsertStudent" parameterType="java.util.Map">
 INSERT INTO bs_student (sid,sName,tid) 
 values
 <foreach collection="stuMap.keys" index="key" item="itemKey" separator=",">
   <foreach collection="stuMap[itemKey]" index="index_list" item="list" separator="," >
    ( (select REPLACE(UUID(),'-','') AS sid) ,#{list.sName},#{itemKey} )
   </foreach>
 </foreach>
</insert>
student mapper.xml 파일(쓰기 2:)

<insert id="batchInsertStudent" >
　　INSERT INTO bs_student (sid,sName,tid)
　　<foreach collection="stuMap.keys" index="index" item="itemKey" separator="UNION ALL">
　　<foreach collection="stuMap[itemKey]" index="index_list" item="list" separator="UNION ALL">
　　　　　　（
　　　　　　SELECT 
　　　　　　(select REPLACE(UUID(),'-','') AS sid)
　　　　　　,#{list.sName}
　　　　　　,#{itemKey}
　　　　　　FROM DUAL
　　　　　　）
　　</foreach>
　　</foreach>
</insert>
stuMap:인터페이스 에@Param("stuMap")을 사용 하여 변 수 를 표시 합 니 다.
stuMap.keys 를 사용 하면 모든 key 를 가 져 와 옮 겨 다 닐 수 있 습 니 다.
내부 순환 에서 stuMap[itemKey]와 유사 한 stuMap.get("key")을 사용 하여 현재 key 에 대응 하 는 value 값 을 가 져 옵 니 다.value 는 list 이기 때문에 옮 겨 다 녀 야 합 니 다.
결과 저장 에 성 공 했 습 니 다.강력 한 마 이 바 티 스 를 다시 한 번 경 배 합 니 다.
이로써 student 데 이 터 를 성공 적 으로 삽입 하 였 습 니 다.
방식 2(추천):
사용자 정의 클래스

class EnclosingType{
 private String uuid;
 private List<ElementType> elements;
}

class ElementType{
 String a;
 String b;
 (...)
}
Mapper.xml(방법 1)

<mapper namespace="my.example.ElementType">
 <insert id="insertElements" parameterType="EnclosingType">
  INSERT INTO table1(enclosingTypeId,column_a,column_b)
  VALUES
  <foreach collection="elements" index="index" item="list" separator=",">  
   ( 
   #{uuid,jdbcType=VARCHAR}
   ,#{list.a,jdbcType=VARCHAR}
   ,#{list.b,jdbcType=VARCHAR}
   )
  </foreach>
 </insert>
</mapper>
Mapper.xml(방법 2)

<mapper namespace="my.example.ElementType">
 <insert id="insertElements" parameterType="EnclosingType">
  INSERT INTO table1(enclosingTypeId,column_a,column_b)
  <foreach collection="elements" index="index" item="list" separator="union all">
   (
   select #{uuid,jdbcType=VARCHAR}
   ,#{list.a,jdbcType=VARCHAR}
   ,#{list.b,jdbcType=VARCHAR}
   from dual
   )
  </foreach>
 </insert>
</mapper>
이상 은 개인 적 인 경험 이 므 로 여러분 에 게 참고 가 되 기 를 바 랍 니 다.여러분 들 도 저 희 를 많이 응원 해 주시 기 바 랍 니 다.만약 잘못 이 있 거나 완전히 고려 하지 않 은 부분 이 있다 면 아낌없이 가르침 을 주시 기 바 랍 니 다.
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