java.lang.Object
- java.lang.ClassLoader
- - org.springframework.core.DecoratingClassLoader
  - - org.springframework.core.OverridingClassLoader

直接已知子类:
SimpleInstrumentableClassLoader, SimpleThrowawayClassLoader
```
public class OverridingClassLoader
extends DecoratingClassLoader
```
ClassLoader that does not always delegate to the parent loader as normal class loaders do. This enables, for example, instrumentation to be forced in the overriding ClassLoader, or a "throwaway" class loading behavior where selected application classes are temporarily loaded in the overriding ClassLoader for introspection purposes before eventually loading an instrumented version of the class in the given parent ClassLoader.
从以下版本开始:
2.0.1
作者:
Rod Johnson, Juergen Hoeller

字段概要
字段
修饰符和类型字段说明
static String[] DEFAULT_EXCLUDED_PACKAGES
Packages that are excluded by default.

构造器概要

构造器
构造器	说明
`OverridingClassLoader(ClassLoader parent)`	Create a new OverridingClassLoader for the given ClassLoader.
`OverridingClassLoader(ClassLoader parent, ClassLoader overrideDelegate)`	Create a new OverridingClassLoader for the given ClassLoader.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`protected boolean`	`isEligibleForOverriding(String className)`	Determine whether the specified class is eligible for overriding by this class loader.
`protected byte[]`	`loadBytesForClass(String name)`	Load the defining bytes for the given class, to be turned into a Class object through a `ClassLoader.defineClass(byte[], int, int)` call.
`Class<?>`	`loadClass(String name)`
`protected Class<?>`	`loadClass(String name, boolean resolve)`
`protected Class<?>`	`loadClassForOverriding(String name)`	Load the specified class for overriding purposes in this ClassLoader.
`protected InputStream`	`openStreamForClass(String name)`	Open an InputStream for the specified class.
`protected byte[]`	`transformIfNecessary(String name, byte[] bytes)`	Transformation hook to be implemented by subclasses.

从类继承的方法 org.springframework.core.DecoratingClassLoader
excludeClass, excludePackage, isExcluded

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - DEFAULT_EXCLUDED_PACKAGES
```
public static final String[] DEFAULT_EXCLUDED_PACKAGES
```
    Packages that are excluded by default.
- 构造器详细资料
  - OverridingClassLoader
```
public OverridingClassLoader(@Nullable
                             ClassLoader parent)
```
    Create a new OverridingClassLoader for the given ClassLoader.
    参数:
    parent - the ClassLoader to build an overriding ClassLoader for
  - OverridingClassLoader
```
public OverridingClassLoader(@Nullable
                             ClassLoader parent,
                             @Nullable
                             ClassLoader overrideDelegate)
```
    Create a new OverridingClassLoader for the given ClassLoader.
    参数:
    parent - the ClassLoader to build an overriding ClassLoader for
    overrideDelegate - the ClassLoader to delegate to for overriding
    从以下版本开始:
    4.3
- 方法详细资料
  - loadClass
```
public Class<?> loadClass(String name)
                   throws ClassNotFoundException
```
    覆盖:
    loadClass 在类中 ClassLoader
    抛出:
    ClassNotFoundException
  - loadClass
```
protected Class<?> loadClass(String name,
                             boolean resolve)
                      throws ClassNotFoundException
```
    覆盖:
    loadClass 在类中 ClassLoader
    抛出:
    ClassNotFoundException
  - isEligibleForOverriding
```
protected boolean isEligibleForOverriding(String className)
```
    Determine whether the specified class is eligible for overriding by this class loader.
    参数:
    className - the class name to check
    返回:
    whether the specified class is eligible
    另请参阅:
    DecoratingClassLoader.isExcluded(java.lang.String)
  - loadClassForOverriding
```
@Nullable
protected Class<?> loadClassForOverriding(String name)
                                   throws ClassNotFoundException
```
    Load the specified class for overriding purposes in this ClassLoader.
    The default implementation delegates to ClassLoader.findLoadedClass(java.lang.String), loadBytesForClass(java.lang.String) and ClassLoader.defineClass(byte[], int, int).
    参数:
    name - the name of the class
    返回:
    the Class object, or null if no class defined for that name
    抛出:
    ClassNotFoundException - if the class for the given name couldn't be loaded
  - loadBytesForClass
```
@Nullable
protected byte[] loadBytesForClass(String name)
                            throws ClassNotFoundException
```
    Load the defining bytes for the given class, to be turned into a Class object through a ClassLoader.defineClass(byte[], int, int) call.
    The default implementation delegates to openStreamForClass(java.lang.String) and transformIfNecessary(java.lang.String, byte[]).
    参数:
    name - the name of the class
    返回:
    the byte content (with transformers already applied), or null if no class defined for that name
    抛出:
    ClassNotFoundException - if the class for the given name couldn't be loaded
  - openStreamForClass
```
@Nullable
protected InputStream openStreamForClass(String name)
```
    Open an InputStream for the specified class.
    The default implementation loads a standard class file through the parent ClassLoader's getResourceAsStream method.
    参数:
    name - the name of the class
    返回:
    the InputStream containing the byte code for the specified class
  - transformIfNecessary
```
protected byte[] transformIfNecessary(String name,
                                      byte[] bytes)
```
    Transformation hook to be implemented by subclasses.
    The default implementation simply returns the given bytes as-is.
    参数:
    name - the fully-qualified name of the class being transformed
    bytes - the raw bytes of the class
    返回:
    the transformed bytes (never null; same as the input bytes if the transformation produced no changes)

类 OverridingClassLoader

字段概要

构造器概要

方法概要

从类继承的方法 org.springframework.core.DecoratingClassLoader

从类继承的方法 java.lang.ClassLoader

从类继承的方法 java.lang.Object

字段详细资料

DEFAULT_EXCLUDED_PACKAGES

构造器详细资料

OverridingClassLoader

OverridingClassLoader

方法详细资料

loadClass

loadClass

isEligibleForOverriding

loadClassForOverriding

loadBytesForClass

openStreamForClass

transformIfNecessary