异常处理：java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.Parameterized

获取父类泛型的class:

Class<T> entityClass =(Class<T>)((ParameterizedType)getClass().getGenericSuperclass()).getActualTypeArguments()[0];

出现问题：

java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType

解决方法

import java.lang.reflect.ParameterizedType;import java.lang.reflect.Type;/*** my name is kiki ,/11/16.*/public class GenericsUtils {/**通过反射,获得定义Class时声明的父类的范型参数的类型.* 如public BookManager extends GenricManager<Book>* @param clazz The class to introspect* @return the first generic declaration, or <code>Object.class</code> if cannot be determined*/public static Class getSuperClassGenricType(Class clazz) {return getSuperClassGenricType(clazz, 0);}/**通过反射,获得定义Class时声明的父类的范型参数的类型.* 如public BookManager extends GenricManager<Book>* @param clazz clazz The class to introspect* @param index the Index of the generic ddeclaration,start from 0.*/public static Class getSuperClassGenricType(Class clazz, int index) throws IndexOutOfBoundsException {Type genType = clazz.getGenericSuperclass();if (!(genType instanceof ParameterizedType)) {return Object.class;}Type[] params = ((ParameterizedType) genType).getActualTypeArguments();if (index >= params.length || index < 0) {return Object.class;}if (!(params[index] instanceof Class)) {return Object.class;}return (Class) params[index];}}

Class<T> entityClass = GenericsUtils.getSuperClassGenricType(Account.class, 0);