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无法使用spring jdbc模板在myql表中设置自动增量值

  •  0
  • Yakhoob  · 技术社区  · 7 年前

    我创建了一个包含三列的简单表,->empid、名称和位置。这里empid具有属性主键,不为null,并且自动递增。

    当我使用jdbctemplate设置值时,它会引发sql异常

    org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [insert into employees values(?,?)]; nested exception is java.sql.SQLException: Column count doesn't match value count at row 1

    我的代码如下

    @Override
    public boolean addEmployee(EmployeeMO emp) throws EmiratesException {
        boolean isEmployeeAdded = false;
        try {
            String sql = "insert into employees values(?,?)";
    
    
            jdbcTemplate.update(sql, new Object[] { emp.getEmpName(), emp.getLocation() });
    
    
            isEmployeeAdded = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return isEmployeeAdded;
    }
    

    我的总异常日志为

    PreparedStatementCallback; bad SQL grammar [insert into employees values(?,?)]; nested exception is java.sql.SQLException: Column count doesn't match value count at row 1
    at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:99)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:649)
    at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:870)
    at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:931)
    at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:941)
    at com.emirates.dao.EmployeeDAOImpl.addEmployee(EmployeeDAOImpl.java:24)
    at com.emirates.service.EmployeeServiceImpl.addEmployee(EmployeeServiceImpl.java:17)
    at com.emirates.controller.EmployeeAddController.loginProcess(EmployeeAddController.java:33)
    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:650)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1115)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
    
    Caused by: java.sql.SQLException: Column count doesn't match value count at row 1
    

    为什么empid设置不正确?有什么想法吗

    1 回复  |  直到 7 年前
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  •  2
  •   Community CDub    4 年前

    您需要在insert语句中指定列的名称。SQL应为:

    insert into employees (name, location) values (?, ?)
    

    MySQL documentation :

    指定语句为其提供值的列,如下所示:

    在表名称后面提供一个带括号的逗号分隔列名列表。在这种情况下,必须通过值列表或SELECT语句为每个命名列提供一个值。

    如果未指定要插入的列名列表。。。值或插入。。。SELECT,表中每列的值必须由值列表或SELECT语句提供。如果您不知道表中列的顺序,请使用descripe tbl\u name查找。