org.apache.ibatis.binding.BindingException: Invalid bound statement (not found):-白红宇

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.dao.mapper.UserInfoMapper.countByExample        at org.apache.ibatis.binding.MapperMethod$SqlCommand.
     
      (MapperMethod.java:196)        at org.apache.ibatis.binding.MapperMethod.
      
       (MapperMethod.java:44)        at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:59)        at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)        at com.sun.proxy.$Proxy93.countByExample(Unknown Source)        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:302)        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)        at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java

报错原因是Mapper.xml文件中没有id为countByExample的语句

如果出现：

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found)

一般的原因是Mapper interface和xml文件的定义对应不上，需要检查包名，namespace，函数名称等能否对应上，需要比较细致的对比，

我经常就是写错了一两个字母搞的很长时间找不到错误

按以下步骤一一执行：

1：检查xml文件所在的package名称是否和interface对应的package名称一一对应

2：检查xml文件的namespace是否和xml文件的package名称一一对应

3：检查函数名称能否对应上

4：去掉xml文件中的中文注释

5：随意在xml文件中加一个空格或者空行然后保存

一般来说到此就可以排除错误了

http://blog.csdn.net/softwarehe/article/details/8889206

mybatis Mapper插件中，updateByPrimaryKey 方法在使用时，入参必须包含id,

实际使用的sql如下：

2016-11-14 11:23:18.885 DEBUG 640 --- [ main] t.m.s.m.U.updateByPrimaryKey : ==> Preparing: UPDATE user_info SET username = ?,password = ?,usertype = ?,enabled = ?,qq = ?,email = ?,tel = ? WHERE Id = ?

2016-11-14 11:23:18.915 DEBUG 640 --- [ main] t.m.s.m.U.updateByPrimaryKey : ==> Parameters: test1(String), 12345678(String), 1(String), null, null, null, null, null

2016-11-14 11:23:18.924 DEBUG 640 --- [ main] t.m.s.m.U.updateByPrimaryKey : <== Updates: 0

如果只想更新指定字段的值，可以使用api: userInfoMapper.updateByPrimaryKeySelective

/**     * 根据主键更新属性不为null的值     *     * @param record     * @return     */    @UpdateProvider(type = BaseUpdateProvider.class, method = "dynamicSQL")    int updateByPrimaryKeySelective(T record);