java.lang.Object
- java.lang.ClassLoader
- - org.apache.catalina.loader.WebappClassLoader
  - - org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader

```
public class TomcatInstrumentableClassLoader
extends WebappClassLoader
```
Extension of Tomcat's default class loader which adds instrumentation to loaded classes without the need to use a VM-wide agent.
To be registered using a Loader tag in Tomcat's Context definition in the server.xml file, with the Spring-provided "spring-instrument-tomcat.jar" file deployed into Tomcat's "lib" directory. The required configuration tag looks as follows:
```
<Loader loaderClass="org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader"/>
```
Typically used in combination with a ReflectiveLoadTimeWeaver defined in the Spring application context. The addTransformer and getThrowawayClassLoader methods mirror the corresponding methods in the LoadTimeWeaver interface, as expected by ReflectiveLoadTimeWeaver.
NOTE: Requires Apache Tomcat version 6.0 or higher, as of Spring 4.0. This class is not intended to work on Tomcat 8.0+; please rely on Tomcat's own InstrumentableClassLoader facility instead, as autodetected by Spring's TomcatLoadTimeWeaver.
从以下版本开始:
2.0
作者:
Costin Leau, Juergen Hoeller
另请参阅:
addTransformer(java.lang.instrument.ClassFileTransformer), getThrowawayClassLoader(), ReflectiveLoadTimeWeaver, TomcatLoadTimeWeaver

构造器概要

构造器
构造器	说明
`TomcatInstrumentableClassLoader()`	Create a new `TomcatInstrumentableClassLoader` using the current context class loader.
`TomcatInstrumentableClassLoader(ClassLoader parent)`	Create a new `TomcatInstrumentableClassLoader` with the supplied class loader as parent.

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
`void`	`addTransformer(ClassFileTransformer transformer)`	Delegate for LoadTimeWeaver's `addTransformer` method.
`protected org.apache.catalina.loader.ResourceEntry`	`findResourceInternal(String name, String path)`
`protected org.apache.catalina.loader.ResourceEntry`	`findResourceInternal(String name, String path, boolean manifestRequired)`
`ClassLoader`	`getThrowawayClassLoader()`	Delegate for LoadTimeWeaver's `getThrowawayClassLoader` method.
`String`	`toString()`

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

- 构造器详细资料
  - TomcatInstrumentableClassLoader
```
public TomcatInstrumentableClassLoader()
```
    Create a new TomcatInstrumentableClassLoader using the current context class loader.
    另请参阅:
    TomcatInstrumentableClassLoader(ClassLoader)
  - TomcatInstrumentableClassLoader
```
public TomcatInstrumentableClassLoader(ClassLoader parent)
```
    Create a new TomcatInstrumentableClassLoader with the supplied class loader as parent.
    参数:
    parent - the parent ClassLoader to be used
- 方法详细资料
  - addTransformer
```
public void addTransformer(ClassFileTransformer transformer)
```
    Delegate for LoadTimeWeaver's addTransformer method. Typically called through ReflectiveLoadTimeWeaver.
    另请参阅:
    LoadTimeWeaver.addTransformer(java.lang.instrument.ClassFileTransformer), ReflectiveLoadTimeWeaver
  - getThrowawayClassLoader
```
public ClassLoader getThrowawayClassLoader()
```
    Delegate for LoadTimeWeaver's getThrowawayClassLoader method. Typically called through ReflectiveLoadTimeWeaver.
    另请参阅:
    LoadTimeWeaver.getThrowawayClassLoader(), ReflectiveLoadTimeWeaver
  - findResourceInternal
```
protected org.apache.catalina.loader.ResourceEntry findResourceInternal(String name,
                                                                        String path)
```
    覆盖:
    findResourceInternal 在类中 WebappClassLoader
  - findResourceInternal
```
protected org.apache.catalina.loader.ResourceEntry findResourceInternal(String name,
                                                                        String path,
                                                                        boolean manifestRequired)
```
    覆盖:
    findResourceInternal 在类中 WebappClassLoader
  - toString
```
public String toString()
```
    覆盖:
    toString 在类中 Object

类 TomcatInstrumentableClassLoader

构造器概要

方法概要

从类继承的方法 java.lang.ClassLoader

从类继承的方法 java.lang.Object

构造器详细资料

TomcatInstrumentableClassLoader

TomcatInstrumentableClassLoader

方法详细资料

addTransformer

getThrowawayClassLoader

findResourceInternal

findResourceInternal

toString