cn.crane4j.core.util

类 ReflectUtils

java.lang.Object

cn.crane4j.core.util.ReflectUtils

public class ReflectUtils
extends Object

ReflectUtils

作者:

huangchengxing

构造器概要

构造器

构造器和说明
ReflectUtils()

方法概要

限定符和类型	方法和说明
static Optional<Method>	findGetterMethod(Class<?> beanType, Field field) find getter method
static Optional<Method>	findGetterMethod(Class<?> beanType, String fieldName) find getter method
static Optional<Method>	findMethod(Class<?> beanType, String methodName, int parameterCount)
static Optional<Method>	findSetterMethod(Class<?> beanType, Field field) find setter method
static Optional<Method>	findSetterMethod(Class<?> beanType, String fieldName) find setter method
static @Nullable Field	getDeclaredField(Class<?> type, String fieldName) Get declared field by name.
static Field[]	getDeclaredFields(Class<?> type) Get declared fields.
static @Nullable Method	getDeclaredMethod(Class<?> type, String methodName, Class<?>... parameterTypes) Get method by name and parameter types.
static Method[]	getDeclaredMethods(Class<?> type) Get declared methods of type.
static Set<Class<?>>	getDeclaredSuperClassWithInterface(Class<?> type) Get declared super class with interface.
static @Nullable Field	getField(Class<?> type, String fieldName) Get field by name.
static Field[]	getFields(Class<?> type) Get fields.
static <T> T	getFieldValue(Object target, Field field) Get field value.
static <T> T	getFieldValue(Object target, String fieldName) Get field value.
static @Nullable Method	getMethod(Class<?> type, String methodName, Class<?>... parameterTypes) Get method by name and parameter types.
static Method[]	getMethods(Class<?> type) Get methods.
static <T> T	invoke(Object object, Method method, Object... args) Invoke method.
static <T> T	invokeRaw(Object object, Method method, Object... args) Invoke method.
static boolean	isJdkElement(AnnotatedElement element) Whether the element is from jdk.
static Object[]	resolveMethodInvocationArguments(Method method, Object... args) Resolve invocation arguments of method.
static Map<String,Parameter>	resolveParameterNames(ParameterNameFinder finder, Method method) Resolve method parameter names.
static <A extends Annotation,E extends AnnotatedElement> void	scanAllAnnotationFromElements(AnnotationFinder annotationFinder, Class<A> annotationType, E[] elements, BiConsumer<E,A> consumer) Get annotations for elements.
static <T extends AccessibleObject> void	setAccessible(T accessibleObject)
static void	traverseTypeHierarchy(Class<?> beanType, Consumer<Class<?>> consumer) Traverse type hierarchy.

从类继承的方法 java.lang.Object

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

构造器详细资料

ReflectUtils

public ReflectUtils()

方法详细资料

invokeRaw

public static <T> T invokeRaw(Object object,
                              Method method,
                              Object... args)

Invoke method.

类型参数:

T - return type

参数:

object - object

method - method to invoke

args - arguments

返回:

return value of method invocation

invoke

public static <T> T invoke(Object object,
                           Method method,
                           Object... args)

Invoke method.

类型参数:

T - return type

参数:

object - object

method - method to invoke

args - arguments

返回:

return value of method invocation

resolveMethodInvocationArguments

public static Object[] resolveMethodInvocationArguments(Method method,
                                                        Object... args)

Resolve invocation arguments of method.

参数:

method - method to invoke

args - arguments

返回:

invocation arguments

resolveParameterNames

public static Map<String,Parameter> resolveParameterNames(ParameterNameFinder finder,
                                                          Method method)

Resolve method parameter names.

参数:

finder - discoverer

method - method

返回:

collection of parameter name and parameter

getDeclaredMethods

public static Method[] getDeclaredMethods(Class<?> type)

Get declared methods of type.

参数:

type - type

返回:

method list

getDeclaredMethod

public static @Nullable Method getDeclaredMethod(Class<?> type,
                                                 String methodName,
                                                 Class<?>... parameterTypes)

Get method by name and parameter types.

参数:

type - type

methodName - method name

parameterTypes - parameter types

返回:

method if found, otherwise null

getMethods

public static Method[] getMethods(Class<?> type)

Get methods.

参数:

type - type

返回:

method list

另请参阅:

Class.getMethods()

getMethod

public static @Nullable Method getMethod(Class<?> type,
                                         String methodName,
                                         Class<?>... parameterTypes)

Get method by name and parameter types.

参数:

type - type

methodName - method name

parameterTypes - parameter types

返回:

method if found, otherwise null

findGetterMethod

public static Optional<Method> findGetterMethod(Class<?> beanType,
                                                Field field)

find getter method

参数:

beanType - bean's type

field - field

返回:

java.util.Optional

findGetterMethod

public static Optional<Method> findGetterMethod(Class<?> beanType,
                                                String fieldName)

find getter method

参数:

beanType - bean's type

fieldName - field's name

返回:

java.util.Optional

findSetterMethod

public static Optional<Method> findSetterMethod(Class<?> beanType,
                                                Field field)

find setter method

参数:

beanType - bean's type

field - field

返回:

java.util.Optional

findSetterMethod

public static Optional<Method> findSetterMethod(Class<?> beanType,
                                                String fieldName)

find setter method

参数:

beanType - bean's type

fieldName - field's name

返回:

java.util.Optional

findMethod

public static Optional<Method> findMethod(Class<?> beanType,
                                          String methodName,
                                          int parameterCount)

isJdkElement

public static boolean isJdkElement(AnnotatedElement element)

Whether the element is from jdk.

参数:

element - element

返回:

boolean

scanAllAnnotationFromElements

public static <A extends Annotation,E extends AnnotatedElement> void scanAllAnnotationFromElements(AnnotationFinder annotationFinder,
                                                                                                   Class<A> annotationType,
                                                                                                   E[] elements,
                                                                                                   BiConsumer<E,A> consumer)

Get annotations for elements.

类型参数:

A - annotation type

E - element type

参数:

annotationFinder - annotation finder

annotationType - annotation type

elements - elements

consumer - consumer

另请参阅:

AnnotationFinder.getAllAnnotations(java.lang.reflect.AnnotatedElement, java.lang.Class<A>)

getDeclaredSuperClassWithInterface

public static Set<Class<?>> getDeclaredSuperClassWithInterface(Class<?> type)

Get declared super class with interface.

参数:

type - type

返回:

declared super class with interface

traverseTypeHierarchy

public static void traverseTypeHierarchy(Class<?> beanType,
                                         Consumer<Class<?>> consumer)

Traverse type hierarchy.

参数:

beanType - bean type

consumer - operation for each type

getDeclaredField

public static @Nullable Field getDeclaredField(Class<?> type,
                                               String fieldName)

Get declared field by name.

参数:

type - type

fieldName - field name

返回:

specified field, or null if not found

getDeclaredFields

public static Field[] getDeclaredFields(Class<?> type)

Get declared fields.

参数:

type - type

返回:

field array

getField

public static @Nullable Field getField(Class<?> type,
                                       String fieldName)

Get field by name.

参数:

type - type

fieldName - field name

返回:

specified field, or null if not found

getFields

public static Field[] getFields(Class<?> type)

Get fields.

参数:

type - type

返回:

field array

getFieldValue

public static <T> T getFieldValue(Object target,
                                  String fieldName)

Get field value.

类型参数:

T - field type

参数:

target - target object

fieldName - field name

返回:

field value

getFieldValue

public static <T> T getFieldValue(Object target,
                                  Field field)

Get field value.

类型参数:

T - field type

参数:

target - target object

field - field

返回:

field value

抛出:

NullPointerException - thrown when field is null

setAccessible

public static <T extends AccessibleObject> void setAccessible(T accessibleObject)