cn.taketoday.context.utils

类 ClassUtils

java.lang.Object

cn.taketoday.context.utils.ClassUtils

public abstract class ClassUtils
extends java.lang.Object

作者:

Today
2018-06-0? ?

构造器概要

构造器

构造器和说明
ClassUtils()

方法概要

限定符和类型	方法和说明
static void	addIgnoreAnnotationClass(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass)
static void	clearCache() clear cache
static <T> java.util.Collection<java.lang.Class<?>>	filter(java.util.function.Predicate<java.lang.Class<?>> predicate)
static java.lang.Class<?>	forName(java.lang.String name) Load class
static java.util.Collection<java.lang.Class<?>>	getAnnotatedClasses(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass) Find class by annotation.
static <T extends java.lang.annotation.Annotation> java.util.Collection<T>	getAnnotation(java.lang.reflect.AnnotatedElement annotatedElement, java.lang.Class<T> annotationClass) Get Annotation by proxy
static <T extends java.lang.annotation.Annotation> java.util.Collection<T>	getAnnotation(java.lang.reflect.AnnotatedElement annotatedElement, java.lang.Class<T> annotationClass, java.lang.Class<? extends T> implClass) Get Annotation by reflect
static <T extends java.lang.annotation.Annotation> T[]	getAnnotationArray(java.lang.reflect.AnnotatedElement annotatedElement, java.lang.Class<T> annotationClass) Get the array of Annotation instance
static <T extends java.lang.annotation.Annotation> T[]	getAnnotationArray(java.lang.reflect.AnnotatedElement annotatedElement, java.lang.Class<T> annotationClass, java.lang.Class<? extends T> implClass) Get the array of Annotation instance
static <T extends java.lang.annotation.Annotation> java.util.Collection<AnnotationAttributes>	getAnnotationAttributes(java.lang.reflect.AnnotatedElement annotatedElement, java.lang.Class<T> annotationClass) Get attributes the 'key-value' of annotations
static AnnotationAttributes	getAnnotationAttributes(java.lang.annotation.Annotation annotation) Get Annotation Attributes from an annotation instance
static <T extends java.lang.annotation.Annotation> AnnotationAttributes	getAnnotationAttributes(java.lang.annotation.Annotation annotation, java.lang.Class<T> annotationClass) Get target AnnotationAttributes
static <T extends java.lang.annotation.Annotation> T	getAnnotationProxy(java.lang.Class<T> annotationClass, AnnotationAttributes attributes) Get Annotation by proxy
static java.util.Collection<java.lang.Class<?>>	getClassCache() get all classes loaded in class path
static java.util.Collection<java.lang.Class<?>>	getClasses(java.lang.String... packages) Get Collection of class under the packages
static java.lang.ClassLoader	getClassLoader()
static java.lang.reflect.Field[]	getFieldArray(java.lang.Class<?> targetClass) Get all Field array
static java.util.Collection<java.lang.reflect.Field>	getFields(java.lang.Class<?> targetClass) Get all Field list
static java.util.Collection<java.lang.Class<?>>	getImplClasses(java.lang.Class<?> superClass) Get all child classes in class path
static java.util.Collection<java.lang.Class<?>>	getImplClasses(java.lang.Class<?> superClass, java.lang.String packageName) Get all child classes in class path filter with package name
static java.lang.String[]	getMethodArgsNames(java.lang.reflect.Method method) Find method parameter list, and cache it.
static <T extends java.lang.annotation.Annotation> AnnotationAttributes	getTargetAnnotationAttributes(java.lang.Class<T> targetAnnotationType, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType) Use recursive to find the target annotation instance
static boolean	isCollection(java.lang.Class<?> cls)
static boolean	isPresent(java.lang.String className)
static void	loadClassInJar(java.util.jar.JarEntry jarEntry, java.lang.String packageName, java.util.Collection<java.lang.Class<?>> scanClasses) Load classes from a JarEntry
static <T> T	newInstance(java.lang.Class<T> beanClass) Get instance with bean class
static <T> T	newInstance(java.lang.String beanClassName) Get instance with bean class
static void	scan(java.util.Collection<java.lang.Class<?>> scanClasses, java.lang.String packageName)
static java.util.Collection<java.lang.Class<?>>	scan(java.lang.String... packages) Scan class with given package.
static void	setClassCache(java.util.Collection<java.lang.Class<?>> classes)
static void	setClassLoader(java.lang.ClassLoader classLoader)

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

ClassUtils

public ClassUtils()

方法详细资料

addIgnoreAnnotationClass

public static void addIgnoreAnnotationClass(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass)

isCollection

public static final boolean isCollection(java.lang.Class<?> cls)

参数:

cls -

返回:

isPresent

public static boolean isPresent(java.lang.String className)

参数:

className -

返回:

forName

public static java.lang.Class<?> forName(java.lang.String name)
                                  throws java.lang.ClassNotFoundException

Load class

参数:

name - a class full name

返回:

a class

抛出:

java.lang.ClassNotFoundException - when class could not be found

getAnnotatedClasses

public static java.util.Collection<java.lang.Class<?>> getAnnotatedClasses(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass)

Find class by annotation.

参数:

annotationClass - annotation class

返回:

the set of class

getImplClasses

public static java.util.Collection<java.lang.Class<?>> getImplClasses(java.lang.Class<?> superClass)

Get all child classes in class path

参数:

superClass - super class or a interface class

返回:

a Collection of impl class

getImplClasses

public static java.util.Collection<java.lang.Class<?>> getImplClasses(java.lang.Class<?> superClass,
                                                                      java.lang.String packageName)

Get all child classes in class path filter with package name

参数:

superClass - super class or a interface class

packageName - package name

返回:

a Collection of impl class

filter

public static final <T> java.util.Collection<java.lang.Class<?>> filter(java.util.function.Predicate<java.lang.Class<?>> predicate)

参数:

predicate - a non-interfering, stateless predicate to apply to each element to determine if it should be included

getClasses

public static java.util.Collection<java.lang.Class<?>> getClasses(java.lang.String... packages)

Get Collection of class under the packages

参数:

packages - package name

返回:

a Collection of class under the packages

scan

public static java.util.Collection<java.lang.Class<?>> scan(java.lang.String... packages)

Scan class with given package.

参数:

packages - the packages to scan

返回:

class set

scan

public static void scan(java.util.Collection<java.lang.Class<?>> scanClasses,
                        java.lang.String packageName)

参数:

scanClasses -

packageName -

loadClassInJar

public static void loadClassInJar(java.util.jar.JarEntry jarEntry,
                                  java.lang.String packageName,
                                  java.util.Collection<java.lang.Class<?>> scanClasses)

Load classes from a JarEntry

参数:

jarEntry - the entry of jar

scanClasses - class set

getMethodArgsNames

public static java.lang.String[] getMethodArgsNames(java.lang.reflect.Method method)
                                             throws java.io.IOException

Find method parameter list, and cache it.

参数:

method - target method

返回:

method parameter list

抛出:

java.io.IOException - when could not access to the class file

从以下版本开始:

1.0.0

getAnnotationArray

public static <T extends java.lang.annotation.Annotation> T[] getAnnotationArray(java.lang.reflect.AnnotatedElement annotatedElement,
                                                                                 java.lang.Class<T> annotationClass,
                                                                                 java.lang.Class<? extends T> implClass)

Get the array of Annotation instance

参数:

annotatedElement - annotated element

annotationClass - target annotation class

implClass - impl class

返回:

the array of Annotation instance

从以下版本开始:

2.1.1

getAnnotationArray

public static <T extends java.lang.annotation.Annotation> T[] getAnnotationArray(java.lang.reflect.AnnotatedElement annotatedElement,
                                                                                 java.lang.Class<T> annotationClass)

Get the array of Annotation instance

参数:

annotatedElement - annotated element

annotationClass - target annotation class

返回:

the array of Annotation instance

从以下版本开始:

2.1.1

getAnnotation

public static <T extends java.lang.annotation.Annotation> java.util.Collection<T> getAnnotation(java.lang.reflect.AnnotatedElement annotatedElement,
                                                                                                java.lang.Class<T> annotationClass,
                                                                                                java.lang.Class<? extends T> implClass)

Get Annotation by reflect

参数:

annotatedElement - The annotated element

annotationClass - The annotation class

implClass - The implementation class

返回:

the Collection of Annotation instance

从以下版本开始:

2.0.x

getAnnotationAttributes

public static AnnotationAttributes getAnnotationAttributes(java.lang.annotation.Annotation annotation)

Get Annotation Attributes from an annotation instance

参数:

annotation - annotation instance

返回:

AnnotationAttributes

从以下版本开始:

2.1.1

getAnnotation

public static <T extends java.lang.annotation.Annotation> java.util.Collection<T> getAnnotation(java.lang.reflect.AnnotatedElement annotatedElement,
                                                                                                java.lang.Class<T> annotationClass)

Get Annotation by proxy

参数:

annotatedElement - The annotated element

annotationClass - The annotation class

返回:

the Collection of Annotation instance

从以下版本开始:

2.1.1

getAnnotationProxy

public static <T extends java.lang.annotation.Annotation> T getAnnotationProxy(java.lang.Class<T> annotationClass,
                                                                               AnnotationAttributes attributes)

Get Annotation by proxy

参数:

annotationClass - The annotation class

attributes - The annotation attributes key-value

返回:

the target Annotation instance

从以下版本开始:

2.1.1

getAnnotationAttributes

public static <T extends java.lang.annotation.Annotation> java.util.Collection<AnnotationAttributes> getAnnotationAttributes(java.lang.reflect.AnnotatedElement annotatedElement,
                                                                                                                             java.lang.Class<T> annotationClass)

Get attributes the 'key-value' of annotations

参数:

annotatedElement - The annotated element

annotationClass - The annotation class

返回:

从以下版本开始:

2.1.1

getAnnotationAttributes

public static <T extends java.lang.annotation.Annotation> AnnotationAttributes getAnnotationAttributes(java.lang.annotation.Annotation annotation,
                                                                                                       java.lang.Class<T> annotationClass)

Get target AnnotationAttributes

参数:

annotationClass - The annotation class

annotation - The annotation instance

返回:

AnnotationAttributes

从以下版本开始:

2.1.1

getTargetAnnotationAttributes

public static <T extends java.lang.annotation.Annotation> AnnotationAttributes getTargetAnnotationAttributes(java.lang.Class<T> targetAnnotationType,
                                                                                                             java.lang.Class<? extends java.lang.annotation.Annotation> annotationType)

Use recursive to find the target annotation instance

参数:

targetAnnotationType - target Annotation thye

annotationType -

返回:

从以下版本开始:

2.1.1

newInstance

public static <T> T newInstance(java.lang.Class<T> beanClass)

Get instance with bean class

参数:

beanClass - bean class

返回:

the instance of target class

从以下版本开始:

2.1.2

newInstance

public static <T> T newInstance(java.lang.String beanClassName)

Get instance with bean class

参数:

beanClassName - bean class name string

返回:

the instance of target class

从以下版本开始:

2.1.2

getFields

public static java.util.Collection<java.lang.reflect.Field> getFields(java.lang.Class<?> targetClass)

Get all Field list

参数:

targetClass - target class

返回:

get all the Field

从以下版本开始:

2.1.2

getFieldArray

public static java.lang.reflect.Field[] getFieldArray(java.lang.Class<?> targetClass)

Get all Field array

参数:

targetClass - target class

返回:

get all the Field array

从以下版本开始:

2.1.2

clearCache

public static void clearCache()

clear cache

setClassLoader

public static void setClassLoader(java.lang.ClassLoader classLoader)

getClassLoader

public static java.lang.ClassLoader getClassLoader()

getClassCache

public static java.util.Collection<java.lang.Class<?>> getClassCache()

get all classes loaded in class path

setClassCache

public static void setClassCache(java.util.Collection<java.lang.Class<?>> classes)