com.vip.vjtools.vjkit.reflect

Class ClassUtil

java.lang.Object

com.vip.vjtools.vjkit.reflect.ClassUtil

public class ClassUtil
extends Object

获取Class信息的工具类 1. 获取类名，包名，循环向上的全部父类，全部接口 2. 其他便捷函数

Constructor Summary

Constructors

Constructor and Description
ClassUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static List<Class<?>>	getAllInterfaces(Class<?> cls) 递归返回本类及所有基类继承的接口，及接口继承的接口，比Spring中的相同实现完整
static List<Class<?>>	getAllSuperclasses(Class<?> cls) 递归返回所有的SupperClasses，包含Object.class
static <T> Class<T>	getClassGenericType(Class clazz) 通过反射, 获得Class定义中声明的泛型参数的类型, 注意泛型必须定义在父类处.
static Class	getClassGenericType(Class clazz, int index) 通过反射, 获得Class定义中声明的父类的泛型参数的类型.
static String	getPackageName(Class<?> cls) 返回PackageName
static String	getPackageName(String className) 返回PackageName
static String	getShortClassName(Class<?> cls) 返回短Class名, 不包含PackageName.
static String	getShortClassName(String className) 返回Class名，不包含PackageName 内部类的话，返回"主类.内部类"
static boolean	isSubClassOrInterfaceOf(Class subclass, Class superclass) https://github.com/linkedin/linkedin-utils/blob/master/org.linkedin.util-core/src/main/java/org/linkedin/util/reflect/ReflectUtils.java The purpose of this method is somewhat to provide a better naming / documentation than the javadoc of Class.isAssignableFrom method.
static Class<?>	unwrapCglib(Object instance) 获取CGLib处理过后的实体的原Class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClassUtil

public ClassUtil()

Method Detail

getShortClassName

public static String getShortClassName(Class<?> cls)

返回短Class名, 不包含PackageName. 内部类的话，返回"主类.内部类"

getShortClassName

public static String getShortClassName(String className)

返回Class名，不包含PackageName 内部类的话，返回"主类.内部类"

getPackageName

public static String getPackageName(Class<?> cls)

返回PackageName

getPackageName

public static String getPackageName(String className)

返回PackageName

getAllSuperclasses

public static List<Class<?>> getAllSuperclasses(Class<?> cls)

递归返回所有的SupperClasses，包含Object.class

getAllInterfaces

public static List<Class<?>> getAllInterfaces(Class<?> cls)

递归返回本类及所有基类继承的接口，及接口继承的接口，比Spring中的相同实现完整

isSubClassOrInterfaceOf

public static boolean isSubClassOrInterfaceOf(Class subclass,
                              Class superclass)

https://github.com/linkedin/linkedin-utils/blob/master/org.linkedin.util-core/src/main/java/org/linkedin/util/reflect/ReflectUtils.java The purpose of this method is somewhat to provide a better naming / documentation than the javadoc of Class.isAssignableFrom method.

Returns:

true if subclass is a subclass or sub interface of superclass

unwrapCglib

public static Class<?> unwrapCglib(Object instance)

获取CGLib处理过后的实体的原Class.

getClassGenericType

public static <T> Class<T> getClassGenericType(Class clazz)

通过反射, 获得Class定义中声明的泛型参数的类型, 注意泛型必须定义在父类处. 这是唯一可以通过反射从泛型获得Class实例的地方. 如无法找到, 返回Object.class. eg. public UserDao extends HibernateDao

Parameters:

clazz - The class to introspect

Returns:

the first generic declaration, or Object.class if cannot be determined

getClassGenericType

public static Class getClassGenericType(Class clazz,
                        int index)

通过反射, 获得Class定义中声明的父类的泛型参数的类型. 注意泛型必须定义在父类处. 这是唯一可以通过反射从泛型获得Class实例的地方. 如无法找到, 返回Object.class. 如public UserDao extends HibernateDao

Parameters:

clazz - clazz The class to introspect

index - the Index of the generic declaration, start from 0.

Returns:

the index generic declaration, or Object.class if cannot be determined