mybitas的一個錯誤

今天工做中遇到的一個問題，第二次了，忘記上次怎麼解決的了

標記下

報錯信息

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named 'subejctrelid' in 'class java.lang.Integer'
	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:75)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371)
	at com.sun.proxy.$Proxy16.selectList(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:198)
	at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:119)
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
	at com.sun.proxy.$Proxy19.findIndiectSubejctRelRelationS(Unknown Source)
	at com.kbs.platform.service.impl.ARAnalysisServiceImpl.ARAnalysis(ARAnalysisServiceImpl.java:151)
	at com.kbs.service.ARServiceTest.test(ARServiceTest.java:41)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: org.apache.ibatis.reflection.ReflectionException: There is no getter for property named 'subejctrelid' in 'class java.lang.Integer'
	at org.apache.ibatis.reflection.Reflector.getGetInvoker(Reflector.java:380)
	at org.apache.ibatis.reflection.MetaClass.getGetInvoker(MetaClass.java:170)
	at org.apache.ibatis.reflection.wrapper.BeanWrapper.getBeanProperty(BeanWrapper.java:152)
	at org.apache.ibatis.reflection.wrapper.BeanWrapper.get(BeanWrapper.java:48)
	at org.apache.ibatis.reflection.MetaObject.getValue(MetaObject.java:116)
	at org.apache.ibatis.scripting.xmltags.DynamicContext$ContextMap.get(DynamicContext.java:97)
	at org.apache.ibatis.scripting.xmltags.DynamicContext$ContextAccessor.getProperty(DynamicContext.java:116)
	at org.apache.ibatis.ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1657)
	at org.apache.ibatis.ognl.ASTProperty.getValueBody(ASTProperty.java:92)
	at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
	at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:210)
	at org.apache.ibatis.ognl.ASTNotEq.getValueBody(ASTNotEq.java:49)
	at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
	at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:210)
	at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:333)
	at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:310)
	at org.apache.ibatis.scripting.xmltags.OgnlCache.getValue(OgnlCache.java:45)
	at org.apache.ibatis.scripting.xmltags.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:32)
	at org.apache.ibatis.scripting.xmltags.IfSqlNode.apply(IfSqlNode.java:33)
	at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:32)
	at org.apache.ibatis.scripting.xmltags.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:40)
	at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:278)
	at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:75)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
	... 32 more

 主要信息

There is no getter for property named 'subejctrelid' in 'class java.lang.Integer'

找到一個相同的問題，大概意思是

引發問題的緣由是由於在DAO方法中定義的參數 與 實體中定義的屬性不一致 致使的，
 好比DAO方法定義的是：
 
 public int deleteUser(String userIds);
 
 SQL語句以下：
 <!-- 刪除用戶(邏輯刪除) -->
 <update id="deleteUser" parameterType="String">
  UPDATE t_user t SET t.user_status = '禁用' WHERE t.user_pk_id IN(#{userIds})
 </update>
 
 UserEntity的定義：
 public class UserEntity extends AbstractEntity{
  private int userPkId;
  private String userId;
  private String userName;
  private String sex;
  private byte age;
 }
 
 這個userIds並不在UserEntity中存在，而userId是存在的，若是使用UserEntity中不存在userIds的屬性 因此會報此錯誤。改爲userId 問題便可解決。

 

我經過改成map傳參能解決，不知道是我認識有誤仍是什麼問題，先標記下，有時間再測試一下

我是在作兩個表聯合查詢的時候遇到的，sql中用到了另外一張表的字段。結果集爲 整型

語句以下

<select id="findIndiectSubejctRelRelations" resultType="java.lang.Integer" parameterType="java.lang.Integer" >
    select r.RelationId from subjectrel r,indirectrelation i where r.id=i.InDirectRelId 
    <if test="subjectRelid!=null">
     and i.SubjectRel = #{subjectRelid}
    </if>
  </select>

mapper是一開始這麼寫的：報上面的錯誤。

List<Integer> findIndiectSubejctRelRelations(Integer subjectRelid);

後來改成map傳值：

List<Integer> findIndiectSubejctRelRelations(Map map);

調用：

Map<String, Object> params=new HashMap<>();
   params.put("subjectRelid", subjectRelPo.getId());
   List<Integer> relations= subjectRelDao.findIndiectSubejctRelRelations(params);

測試經過。

估計是mybitas 有什麼機制吧，傳一個參數的時候會認爲這個參數必定是這個javabean的一個屬性。不然就會報錯