Ten, java.lang.ClassCastException: [Ljava.lang.Object; cannot is cast to Xxx.action.entity.Category

Java.lang.ClassCastException: [Ljava.lang.Object; cannot being cast to xxx.action.entity.Category at Chentailei.action.test.SSH_CategoryDao.findByParentId (ssh_categorydao.java:61) at Sun.reflect.NativeMethodAccessorImpl.invoke0 (Native method) at Sun.reflect.NativeMethodAccessorImpl.invoke ( nativemethodaccessorimpl.java:39) at Sun.reflect.DelegatingMethodAccessorImpl.invoke ( DELEGATINGMETHODACCESSORIMPL.JAVA:25) at Java.lang.reflect.Method.invoke (method.java:597) at Org.junit.internal.runners.TestMethod.invoke (testmethod.java:59) at Org.junit.internal.runners.MethodRoadie.runTestMethod (methodroadie.java:98) at Org.junit.internal.runners.methodroadie$2.run (methodroadie.java:79) at Org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters (methodroadie.java:87) at Org.junit.internal.runners.MethodRoadie.runTest (methodroadie.java:77) at Org.junit.internal.runners.MethodRoadie.run (methodroadie.java:42) at Org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod (junit4classrunner.java:88) at Org.junit.internal.runners.JUnit4ClassRunner.runMethods (junit4classrunner.java:51) at Org.junit.internal.runners.junit4classrunner$1.run (junit4classrunner.java:44) at Org.junit.internal.runners.ClassRoadie.runUnprotected (classroadie.java:27) at Org.junit.internal.runners.ClassRoadie.runProtected (classroadie.java:37) at Org.junit.internal.runners.JUnit4ClassRunner.run (junit4classrunner.java:42) at Org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run (junit4testreference.java:46) at Org.eclipse.jdt.internal.junit.runner.TestExecution.run (testexecution.java:38) at Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests (remotetestrunner.java:467) at Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests (remotetestrunner.java:683) at Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run (remotetestrunner.java:390) at

 Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main (remotetestrunner.java:197)

Reason:

Interface output label such as: ${categorys.name}, Need is: List<category>, and Hibernate callback function return is object[], both to shield.

Solve:

1. List<category> the output type, change to: list<object[]>, change page output ${CATEGORYS[1]}, compare the position of the array elements in detail;

2. Return the callback function object[], strong to:list<object[]> (not strong to LIST<CATEGORY> Because the SQL statement is a multiple-table join query, the execution will report the above error), and then Traverse, Add to List<category> by assigning the element value of the Category object (which will be object[] to the Category property), and converting the code as follows:

Executes the callback object, gets the result set
list<object[]> list =
 (list) this.gethibernatetemplate (). Execute (action);
Convert
list<category> prolist = new arraylist<category> ();
for (int i=0; i<list.size (); i++) {
 object[] obs=list.get (i);
 Category cate = new Category ();
 Cate.setid ((Integer) obs[0]);
 Cate.setturn ((Integer) obs[1]);
 Cate.setname ((String) obs[2]);
 Cate.setenname ((String) obs[3]);
 Cate.setdescription ((String) obs[4]);
 Cate.setparentid ((Integer) obs[5]);
 Cate.setpnum ((BigInteger) obs[6]);
 Prolist.add (Cate);
}