[简单]Ibatis Error setting property Cause: java.lang.IllegalArgumentException错误记录

       今天用Ibatis的时候写了个简单的查询语句，如下：

       

 <select id="getAllBean" parameterClass="int" resultClass="TestBean">
		SELECT *
		 FROM TEST_BEAN START WITH ID =#orgId# 
		CONNECT BY PRIOR PARENTID = ID
	</select>

    测试的时候报错了，错误信息如下：

   

Caused by: java.lang.RuntimeException: Error setting property 'setParentId' of 'com.ai.educore.bean.TestBean@3450f068'.  Cause: java.lang.IllegalArgumentException
	at com.ibatis.sqlmap.engine.accessplan.PropertyAccessPlan.setProperties(PropertyAccessPlan.java:52)
	at com.ibatis.sqlmap.engine.exchange.JavaBeanDataExchange.setData(JavaBeanDataExchange.java:112)
	at com.ibatis.sqlmap.engine.mapping.result.ResultMap.setResultObjectValues(ResultMap.java:371)
	at com.ibatis.sqlmap.engine.mapping.result.AutoResultMap.setResultObjectValues(AutoResultMap.java:57)
	at com.ibatis.sqlmap.engine.mapping.statement.RowHandlerCallback.handleResultObject(RowHandlerCallback.java:64)
	at com.ibatis.sqlmap.engine.execution.SqlExecutor.handleResults(SqlExecutor.java:385)
	at com.ibatis.sqlmap.engine.execution.SqlExecutor.handleMultipleResults(SqlExecutor.java:300)
	at com.ibatis.sqlmap.engine.execution.SqlExecutor.executeQuery(SqlExecutor.java:189)
	at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.sqlExecuteQuery(MappedStatement.java:221)
	at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.executeQueryWithCallback(MappedStatement.java:189)
	... 65 more
Caused by: java.lang.IllegalArgumentException
	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 com.ibatis.common.beans.MethodInvoker.invoke(MethodInvoker.java:17)
	at com.ibatis.sqlmap.engine.accessplan.PropertyAccessPlan.setProperties(PropertyAccessPlan.java:46)
	... 74 more  

    错误原因可能是数据库中parentId字段为空。

    解决方法：把JavaBean中parentId类型改为基础类型的包装类，如int改为Integer。

 

     全文完。