问题描述：当我在model中添加了一下代码以后数据库报错:

添加的代码为:

private Viewpoint viewpoint;

public Viewpoint getViewpoint() {

    return viewpoint;

}

public void setViewpoint(Viewpoint viewpoint) {

    this.viewpoint = viewpoint;

}

错误信息为:

-- ::56.473 [http-nio--exec-] ERROR [CsrfFilter:] - doFilter

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.jdbc.BadSqlGrammarException:

### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'viewpoint' in 'field list'

### The error may exist in com/bim/bdip/cloud/home/mapper/BimWorkflowCollisionMapper.java (best guess)

### The error may involve defaultParameterMap

### The error occurred while setting parameters

### SQL: SELECT  id_ AS id,viewpoint,guid,workflow_id AS workflowId,zybh,lbbh,yzdjbh,sjzy,zxwz,lcbh,tzhz,th,wtms,yhjy,sjtxgyj,mxyzyj,vp_id AS vpId,vp_picture AS vpPicture,ex_field1 AS exField1,ex_field2 AS exField2,ex_field3 AS exField3,ex_field4 AS exField4,enable_ AS `enable`,remark_ AS remark,create_by AS createBy,create_time AS createTime,update_by AS updateBy,update_time AS updateTime  FROM bim_workflow_collision   WHERE  (workflow_id=?)

### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'viewpoint' in 'field list'

; bad SQL grammar []; nested exception is java.lang.Throwable: Unknown column 'viewpoint' in 'field list'

    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:) ~[spring-webmvc-5.0..RC3.jar:5.0..RC3]

    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:) ~[spring-webmvc-5.0..RC3.jar:5.0..RC3]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:) ~[servlet-api.jar:?]

    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:) ~[spring-webmvc-5.0..RC3.jar:5.0..RC3]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:) ~[servlet-api.jar:?]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) ~[catalina.jar:8.5.]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) ~[catalina.jar:8.5.]

    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:) ~[tomcat-websocket.jar:8.5.]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) ~[catalina.jar:8.5.]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) ~[catalina.jar:8.5.]

    at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:) ~[spring-session-2.0..M2.jar:?]

    at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:) ~[spring-session-2.0..M2.jar:?]

    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:) ~[spring-web-5.0..RC3.jar:5.0..RC3]

    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:) ~[spring-web-5.0..RC3.jar:5.0..RC3]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) ~[catalina.jar:8.5.]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) ~[catalina.jar:8.5.]

    at com.bim.bdip.cloud.home.core.filter.XssFilter.doFilter(XssFilter.java:) ~[bim-bdip-cloud-home-common-1.1..jar:?]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) ~[catalina.jar:8.5.]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) ~[catalina.jar:8.5.]

    at com.bim.bdip.cloud.home.core.filter.CsrfFilter.doFilter(CsrfFilter.java:) [bim-bdip-cloud-home-common-1.1..jar:?]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) [catalina.jar:8.5.]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) [catalina.jar:8.5.]

    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:) [spring-web-5.0..RC3.jar:5.0..RC3]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:) [spring-web-5.0..RC3.jar:5.0..RC3]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) [catalina.jar:8.5.]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) [catalina.jar:8.5.]

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:) [catalina.jar:8.5.]

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:) [catalina.jar:8.5.]

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:) [catalina.jar:8.5.]

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:) [catalina.jar:8.5.]

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:) [catalina.jar:8.5.]

    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:) [catalina.jar:8.5.]

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:) [catalina.jar:8.5.]

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:) [catalina.jar:8.5.]

    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:) [tomcat-coyote.jar:8.5.]

    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:) [tomcat-coyote.jar:8.5.]

    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:) [tomcat-coyote.jar:8.5.]

    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:) [tomcat-coyote.jar:8.5.]

    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:) [tomcat-coyote.jar:8.5.]

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:) [?:1.8.0_131]

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:) [?:1.8.0_131]

    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:) [tomcat-util.jar:8.5.]

    at java.lang.Thread.run(Thread.java:) [?:1.8.0_131]

Caused by: org.springframework.jdbc.BadSqlGrammarException:

### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'viewpoint' in 'field list'

### The error may exist in com/bim/bdip/cloud/home/mapper/BimWorkflowCollisionMapper.java (best guess)

### The error may involve defaultParameterMap

### The error occurred while setting parameters

### SQL: SELECT  id_ AS id,viewpoint,guid,workflow_id AS workflowId,zybh,lbbh,yzdjbh,sjzy,zxwz,lcbh,tzhz,th,wtms,yhjy,sjtxgyj,mxyzyj,vp_id AS vpId,vp_picture AS vpPicture,ex_field1 AS exField1,ex_field2 AS exField2,ex_field3 AS exField3,ex_field4 AS exField4,enable_ AS `enable`,remark_ AS remark,create_by AS createBy,create_time AS createTime,update_by AS updateBy,update_time AS updateTime  FROM bim_workflow_collision   WHERE  (workflow_id=?)

### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'viewpoint' in 'field list'

; bad SQL grammar []; nested exception is java.lang.Throwable: Unknown column 'viewpoint' in 'field list'

    at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:) ~[spring-jdbc-5.0..RC3.jar:5.0..RC3]

    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:) ~[spring-jdbc-5.0..RC3.jar:5.0..RC3]

    at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:) ~[mybatis-spring-1.3..jar:1.3.]

    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:) ~[mybatis-spring-1.3..jar:1.3.]

    at com.sun.proxy.$Proxy52.selectList(Unknown Source) ~[?:?]

    at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:) ~[mybatis-spring-1.3..jar:1.3.]

    at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:) ~[mybatis-3.4..jar:3.4.]

    at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:) ~[mybatis-3.4..jar:3.4.]

    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:) ~[mybatis-3.4..jar:3.4.]

    at com.sun.proxy.$Proxy93.selectList(Unknown Source) ~[?:?]

    at com.bim.bdip.cloud.home.service.BimWorkflowDetailService.getBimWorkflowInfoById(BimWorkflowDetailService.java:) ~[?:?]

    at com.bim.bdip.cloud.home.service.BimWorkflowDetailService$$FastClassBySpringCGLIB$$ad33165e.invoke(<generated>) ~[?:?]

    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:) ~[spring-core-5.0..RC3.jar:5.0..RC3]

    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:) ~[spring-aop-5.0..RC3.jar:5.0..RC3]

    at com.bim.bdip.cloud.home.service.BimWorkflowDetailService$$EnhancerBySpringCGLIB$$ac4e3918.getBimWorkflowInfoById(<generated>) ~[?:?]

    at com.bim.bdip.cloud.home.service.BimWorkflowDetailService$$EnhancerBySpringCGLIB$$ac4e3918MethodAccess.invoke(Unknown Source) ~[?:?]

    at com.esotericsoftware.reflectasm.MethodAccess.invoke(MethodAccess.java:) ~[reflectasm-1.09.jar:?]

    at com.bim.bdip.cloud.home.core.util.InstanceUtil.invokeMethod(InstanceUtil.java:) ~[bim-bdip-cloud-home-common-1.1..jar:?]

    at com.bim.bdip.cloud.home.core.base.BaseProviderImpl.execute(BaseProviderImpl.java:) ~[bim-bdip-cloud-home-common-1.1..jar:?]

    at sun.reflect.GeneratedMethodAccessor141.invoke(Unknown Source) ~[?:?]

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:) ~[?:1.8.0_131]

    at java.lang.reflect.Method.invoke(Method.java:) ~[?:1.8.0_131]

    at com.weibo.api.motan.rpc.DefaultProvider.invoke(DefaultProvider.java:) ~[motan-core-0.3..jar:?]

    at com.weibo.api.motan.rpc.AbstractProvider.call(AbstractProvider.java:) ~[motan-core-0.3..jar:?]

    at com.weibo.api.motan.transport.ProviderMessageRouter.call(ProviderMessageRouter.java:) ~[motan-core-0.3..jar:?]

    at com.weibo.api.motan.transport.ProviderProtectedMessageRouter.call(ProviderProtectedMessageRouter.java:) ~[motan-core-0.3..jar:?]

    at com.weibo.api.motan.transport.ProviderMessageRouter.handle(ProviderMessageRouter.java:) ~[motan-core-0.3..jar:?]

    at com.weibo.api.motan.transport.support.DefaultRpcHeartbeatFactory$HeartMessageHandleWrapper.handle(DefaultRpcHeartbeatFactory.java:) ~[motan-core-0.3..jar:?]

    at com.weibo.api.motan.transport.netty.NettyChannelHandler.processRequest(NettyChannelHandler.java:) ~[motan-transport-netty-0.3..jar:?]

    at com.weibo.api.motan.transport.netty.NettyChannelHandler.access$(NettyChannelHandler.java:) ~[motan-transport-netty-0.3..jar:?]

    at com.weibo.api.motan.transport.netty.NettyChannelHandler$.run(NettyChannelHandler.java:) ~[motan-transport-netty-0.3..jar:?]

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:) ~[?:1.8.0_131]

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:) ~[?:1.8.0_131]

    ...  more

Caused by: java.lang.Throwable: Unknown column 'viewpoint' in 'field list'

原因是mybatis查询以后在数据库找不到这个字段，所以报错了。

解决：

在private ViewPoint viewpoint;加上@TableField(exist = false)这个注解就可以了

@TableField(exist = false)

private Viewpoint viewpoint;

public Viewpoint getViewpoint() {

    return viewpoint;

}

public void setViewpoint(Viewpoint viewpoint) {

    this.viewpoint = viewpoint;

}

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