mybatis批量插入报错
报错内容
org.springframework.jdbc.UncategorizedSQLException:
### Error updating database. Cause: java.sql.SQLException: sql injection violation, syntax error: syntax error, expect ')' : INSERT INTO ke_online_course_student ( occ_id,class_id,class_name,teacher_id,student_id,oc_id,oc_title,study_date,study_progress,create_time,is_delete ) VALUES
### SQL: INSERT INTO ke_online_course_student ( occ_id,class_id,class_name,teacher_id,student_id,oc_id,oc_title,study_date,study_progress,create_time,is_delete ) VALUES
### Cause: java.sql.SQLException: sql injection violation, syntax error: syntax error, expect ')' : INSERT INTO ke_online_course_student ( occ_id,class_id,class_name,teacher_id,student_id,oc_id,oc_title,study_date,study_progress,create_time,is_delete ) VALUES
; uncategorized SQLException for SQL []; SQL state [null]; error code [0]; sql injection violation, syntax error: syntax error, expect ')' : INSERT INTO ke_online_course_student ( occ_id,class_id,class_name,teacher_id,student_id,oc_id,oc_title,study_date,study_progress,create_time,is_delete ) VALUES; nested exception is java.sql.SQLException: sql injection violation, syntax error: syntax error, expect ')' : INSERT INTO ke_online_course_student ( occ_id,class_id,class_name,teacher_id,student_id,oc_id,oc_title,study_date,study_progress,create_time,is_delete ) VALUES
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
at com.sun.proxy.$Proxy96.insert(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:278)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:57)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
at com.sun.proxy.$Proxy197.insertList(Unknown Source)
at com.wangtiansoft.ke.modules.apis.onlineCourse.service.impl.OnlineCourseTeacherServiceImpl.addOc(OnlineCourseTeacherServiceImpl.java:125)
at com.wangtiansoft.ke.modules.apis.onlineCourse.service.impl.OnlineCourseTeacherServiceImpl.addOnlineCourse(OnlineCourseTeacherServiceImpl.java:96)
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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
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$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy199.addOnlineCourse(Unknown Source)
at com.wangtiansoft.ke.modules.apis.onlineCourse.controller.OnlineCourseTeacherController$5.execute(OnlineCourseTeacherController.java:161)
at com.wangtiansoft.ke.core.support.common.BaseController.buildMobileAjaxResponseForAccount(BaseController.java:435)
at com.wangtiansoft.ke.modules.apis.onlineCourse.controller.OnlineCourseTeacherController.addOnlineCourse(OnlineCourseTeacherController.java:147)
at com.wangtiansoft.ke.modules.apis.onlineCourse.controller.OnlineCourseTeacherController$$FastClassBySpringCGLIB$$4894a0d2.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85)
at com.wangtiansoft.ke.config.ApiLogAspect.monitorElapsedTime(ApiLogAspect.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:629)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:618)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
at com.wangtiansoft.ke.modules.apis.onlineCourse.controller.OnlineCourseTeacherController$$EnhancerBySpringCGLIB$$57970565.addOnlineCourse(<generated>)
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.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:150)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:167)
at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:80)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.sql.SQLException: sql injection violation, syntax error: syntax error, expect ')' : INSERT INTO ke_online_course_student ( occ_id,class_id,class_name,teacher_id,student_id,oc_id,oc_title,study_date,study_progress,create_time,is_delete ) VALUES
at com.alibaba.druid.wall.WallFilter.check(WallFilter.java:725)
at com.alibaba.druid.wall.WallFilter.connection_prepareStatement(WallFilter.java:268)
at com.alibaba.druid.filter.FilterChainImpl.connection_prepareStatement(FilterChainImpl.java:459)
at com.alibaba.druid.filter.FilterAdapter.connection_prepareStatement(FilterAdapter.java:934)
at com.alibaba.druid.filter.FilterEventAdapter.connection_prepareStatement(FilterEventAdapter.java:132)
at com.alibaba.druid.filter.FilterChainImpl.connection_prepareStatement(FilterChainImpl.java:459)
at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.prepareStatement(ConnectionProxyImpl.java:350)
at com.alibaba.druid.pool.DruidPooledConnection.prepareStatement(DruidPooledConnection.java:498)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.instantiateStatement(PreparedStatementHandler.java:80)
at org.apache.ibatis.executor.statement.BaseStatementHandler.prepare(BaseStatementHandler.java:88)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.prepare(RoutingStatementHandler.java:59)
at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:85)
at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:49)
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
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.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63)
at com.sun.proxy.$Proxy255.update(Unknown Source)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)
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:433)
... 136 more
Caused by: com.alibaba.druid.sql.parser.ParserException: syntax error, expect ')'
at com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser.parseValueClause(MySqlStatementParser.java:2102)
at com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser.parseInsert(MySqlStatementParser.java:2050)
at com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser.parseInsert(MySqlStatementParser.java:193)
at com.alibaba.druid.sql.parser.SQLStatementParser.parseStatementList(SQLStatementParser.java:130)
at com.alibaba.druid.sql.parser.SQLStatementParser.parseStatementList(SQLStatementParser.java:79)
at com.alibaba.druid.wall.WallProvider.checkInternal(WallProvider.java:620)
at com.alibaba.druid.wall.WallProvider.check(WallProvider.java:574)
at com.alibaba.druid.wall.WallFilter.check(WallFilter.java:712)
... 163 more
原因是批量插入的list为空
mybatis批量插入报错的更多相关文章
- 解决Oracle+Mybatis批量插入报错：SQL 命令未正确结束
Mybatis批量插入需要foreach元素.foreach元素有以下主要属性: (1)item:集合中每一个元素进行迭代时的别名. (2)index:指定一个名字,用于表示在迭代过程中,每次迭代到的 ...
- Mybatis批量insert报错的解决办法【the right syntax to use near '' at line...】
Java中使用Mybatis批量插入数据时Mapper.xml中的sql如下: <insert id="batchSave"> into t_emp(emp_name, ...
- druid + mysql + mybatis 批量更新报错
首先 批量更新报错 sql injection violation, multi-statement not allow 然后看了博客:https://blog.csdn.net/qq_3634595 ...
- mybatis批量更新报错badsql
mybatis批量更新时语法写的都对,但是报错,需要在连接上面加上allowMultiQueries=true 示例:jdbc:MySQL://192.168.1.236:3306/test?useU ...
- Mybatis批量更新报错com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException
批量更新数据,非常简单的一段代码,硬是报错,插入的数据也能显示出来 List<User> userlist = new ArrayList<User>(); userlist. ...
- mybatis批量更新报错 org.mybatis.spring.MyBatisSystemException
具体报错信息: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.Bin ...
- mybatis批量更新报错
批量更新sql <update id="updateAutoAppraiseInfo" parameterType="Object"> <fo ...
- mybatis批量新增报错 BadSqlGrammarException
org.springframework.jdbc.BadSqlGrammarException: ### Error updating database. Cause: com.mysql.jdbc. ...
- mybatis+oracle批量插入报不符合协议和sql未正确结束
在Java中循环save,需要加useGeneratedKeys="false",否则报错不符合协议 mybatis批量插入,也需要在insert里加入 useGeneratedK ...
随机推荐
- 3. [leetcode] Longest Substring Without Repeating Characters
Given a string, find the length of the longest substring without repeating characters. Examples Give ...
- Android 开发学习资源汇总
下面这些资源对Android开发来说是很有帮助的! 1. 在线代码运行工具 地址:https://tool.lu/coderunner/ 说明:此工具站能在线运行C.C++.Java,基本能满足相关基 ...
- C语言字符/字符串相关函数收藏
字符串的声明与使用 定义一个可变的字符串: char ch[]={"123456abc"}; char ch2[5]={"123456789"}; //会出现警 ...
- .NET Core微服务之基于Polly+AspectCore实现熔断与降级机制
Tip: 此篇已加入.NET Core微服务基础系列文章索引 一.熔断.降级与AOP 1.1 啥是熔断? 在广义的解释中,熔断主要是指为控制股票.期货或其他金融衍生产品的交易风险,为其单日价格波动幅度 ...
- MS SQL 锁与事务
加锁的主要目的是为了防止并发操作时导致的数据不一致等问题,锁分为共享锁(S).更新锁(U).排他锁(X),共享锁与更新只是单向兼容?传说中的单相思? 事务 事务能保证数据操作的原子性,要么内部操作都提 ...
- C#反射调用方法实例
下面是两个反射的实例 案例1: 动态调用类中的方法.传入参数,并获得返回值. xxxx:类名 Event:类中的方法 pra1,pra2,pra3:方法对应的入参 DoRet:方法返回的执行结果 Ty ...
- ASP.NET Core - 开篇
由来 ASP.NET Core 是一个跨平台的高性能开源框架,ASP.NET Core第一次出现在我们眼前是以 ASP.NET vNext 命名的,然后又重新命名为ASP.NET 5,为了表明它并不是 ...
- [开源]Dapper Repository 一种实现方式
接着上篇[开源]Entity Framework 6 Repository 一种实现方式 由于Dapper 本身就是轻量级Orm特性,这里参考Creating a Data Repository us ...
- SQL优化 MySQL版 -分析explain SQL执行计划与笛卡尔积
SQL优化 MySQL版 -分析explain SQL执行计划 作者 Stanley 罗昊 [转载请注明出处和署名,谢谢!] 首先我们先创建一个数据库,数据库中分别写三张表来存储数据; course: ...
- 遇到一道经典的java面试题
在文件 nameList.txt 中按下图格式存放着超过50万人的姓名与身份证信息.请使用您熟悉的编程语言(Java或C/C++)编写一段程序, 将出生日期落在1995年1月1日与1999年12月31 ...