mybatis 自带的框架，使用时有问题
在测试用例中直接调用selectPage 会出现错误：
### Error querying database. Cause: org.apache.ibatis.builder.BuilderException: Error evaluating expression 'criteria.valid'. Cause: org.apache.ibatis.ognl.NoSuchPropertyException: cn.com.baby.weibo.dao.ibatis.Critirias$Criteria.valid
### The error may exist in cn/com/baby/weibo/dao/ibatis/sqlmap/Tweet.xml
### The error may involve TweetMapper.selectByCritirias
### The error occurred while executing a query
### Cause: org.apache.ibatis.builder.BuilderException: Error evaluating expression 'criteria.valid'. Cause: org.apache.ibatis.ognl.NoSuchPropertyException: cn.com.baby.weibo.dao.ibatis.Critirias$Criteria.valid
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:8)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:61)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:53)
at cn.com.baby.weibo.dao.ibatis.IbatisBaseDao.list(IbatisBaseDao.java:92)
at cn.com.baby.weibo.dao.ibatis.IbatisTweetDao.selectByCritirias(IbatisTweetDao.java:77)
at cn.com.baby.weibo.dao.ibatis.IbatisTweetDao.selectPage(IbatisTweetDao.java:122)
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:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy18.selectPage(Unknown Source)
at cn.com.baby.weibo.dao.ibatis.EntityManager.selectPage(EntityManager.java:186)
... 25 more
Caused by: org.apache.ibatis.builder.BuilderException: Error evaluating expression 'criteria.valid'. Cause: org.apache.ibatis.ognl.NoSuchPropertyException: cn.com.baby.weibo.dao.ibatis.Critirias$Criteria.valid
at org.apache.ibatis.builder.xml.dynamic.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:20)
at org.apache.ibatis.builder.xml.dynamic.IfSqlNode.apply(IfSqlNode.java:15)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:14)
at org.apache.ibatis.builder.xml.dynamic.ForEachSqlNode.apply(ForEachSqlNode.java:55)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:14)
at org.apache.ibatis.builder.xml.dynamic.TrimSqlNode.apply(TrimSqlNode.java:27)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:14)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:14)
at org.apache.ibatis.builder.xml.dynamic.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:22)
at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:198)
at org.apache.ibatis.executor.BaseExecutor.createCacheKey(BaseExecutor.java:114)
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:83)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:68)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:59)
... 41 more
Caused by: org.apache.ibatis.ognl.NoSuchPropertyException: cn.com.baby.weibo.dao.ibatis.Critirias$Criteria.valid
at org.apache.ibatis.ognl.ObjectPropertyAccessor.getProperty(ObjectPropertyAccessor.java:115)
at org.apache.ibatis.ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1529)
at org.apache.ibatis.ognl.ASTProperty.getValueBody(ASTProperty.java:84)
at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:175)
at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:213)
at org.apache.ibatis.ognl.ASTChain.getValueBody(ASTChain.java:107)
at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:175)
at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:213)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:314)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:394)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:435)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:414)
at org.apache.ibatis.builder.xml.dynamic.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:15)
... 54 more
selectPage中有两次查询调用
this.selectByCritirias(critirias);
this.countByCritirias(critirias);
debug ibatis 源码发现，ibatis内嵌的ognl，在解析表达式criteria.valid，第一次解析出来 criteria.valid 的 readmethod, returnType, 并存入缓存map，第二次直接获得map的value时，丢失了readmethod。所以出现异常
这个异常在测试系统和正式系统中都不会出现，怀疑是jdk的bug。
如果需要在本地测试。可在调用 selectPage 前先调用一次selectByPrimaryKey。
### Error querying database. Cause: org.apache.ibatis.builder.BuilderException: Error evaluating expression 'criteria.valid'. Cause: org.apache.ibatis.ognl.NoSuchPropertyException: cn.com.baby.weibo.dao.ibatis.Critirias$Criteria.valid
### The error may exist in cn/com/baby/weibo/dao/ibatis/sqlmap/Tweet.xml
### The error may involve TweetMapper.selectByCritirias
### The error occurred while executing a query
### Cause: org.apache.ibatis.builder.BuilderException: Error evaluating expression 'criteria.valid'. Cause: org.apache.ibatis.ognl.NoSuchPropertyException: cn.com.baby.weibo.dao.ibatis.Critirias$Criteria.valid
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:8)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:61)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:53)
at cn.com.baby.weibo.dao.ibatis.IbatisBaseDao.list(IbatisBaseDao.java:92)
at cn.com.baby.weibo.dao.ibatis.IbatisTweetDao.selectByCritirias(IbatisTweetDao.java:77)
at cn.com.baby.weibo.dao.ibatis.IbatisTweetDao.selectPage(IbatisTweetDao.java:122)
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:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy18.selectPage(Unknown Source)
at cn.com.baby.weibo.dao.ibatis.EntityManager.selectPage(EntityManager.java:186)
... 25 more
Caused by: org.apache.ibatis.builder.BuilderException: Error evaluating expression 'criteria.valid'. Cause: org.apache.ibatis.ognl.NoSuchPropertyException: cn.com.baby.weibo.dao.ibatis.Critirias$Criteria.valid
at org.apache.ibatis.builder.xml.dynamic.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:20)
at org.apache.ibatis.builder.xml.dynamic.IfSqlNode.apply(IfSqlNode.java:15)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:14)
at org.apache.ibatis.builder.xml.dynamic.ForEachSqlNode.apply(ForEachSqlNode.java:55)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:14)
at org.apache.ibatis.builder.xml.dynamic.TrimSqlNode.apply(TrimSqlNode.java:27)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:14)
at org.apache.ibatis.builder.xml.dynamic.MixedSqlNode.apply(MixedSqlNode.java:14)
at org.apache.ibatis.builder.xml.dynamic.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:22)
at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:198)
at org.apache.ibatis.executor.BaseExecutor.createCacheKey(BaseExecutor.java:114)
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:83)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:68)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:59)
... 41 more
Caused by: org.apache.ibatis.ognl.NoSuchPropertyException: cn.com.baby.weibo.dao.ibatis.Critirias$Criteria.valid
at org.apache.ibatis.ognl.ObjectPropertyAccessor.getProperty(ObjectPropertyAccessor.java:115)
at org.apache.ibatis.ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1529)
at org.apache.ibatis.ognl.ASTProperty.getValueBody(ASTProperty.java:84)
at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:175)
at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:213)
at org.apache.ibatis.ognl.ASTChain.getValueBody(ASTChain.java:107)
at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:175)
at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:213)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:314)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:394)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:435)
at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:414)
at org.apache.ibatis.builder.xml.dynamic.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:15)
... 54 more
selectPage中有两次查询调用
this.selectByCritirias(critirias);
this.countByCritirias(critirias);
debug ibatis 源码发现，ibatis内嵌的ognl，在解析表达式criteria.valid，第一次解析出来 criteria.valid 的 readmethod, returnType, 并存入缓存map，第二次直接获得map的value时，丢失了readmethod。所以出现异常
这个异常在测试系统和正式系统中都不会出现，怀疑是jdk的bug。
如果需要在本地测试。可在调用 selectPage 前先调用一次selectByPrimaryKey。