classloader

there are three different types of sharedclasshelper that can be returned by the factory, each of which is designed for use by a different type of classloader

这个工厂可以返回三种不同的SharedClassHelper，分别供不同类型的类装载器使用

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so you need to get an object of type classloader from the application.

因此，需要从应用程序获取ClassLoader类型的对象。

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in this case, when you deploy the war or at runtime, classloader errors may occur.

在此情况下，当您部署WAR时或在运行时，类加载器错误可能就会出现。

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If the count steadily rises, then you can assume that either the app server or your code has a ClassLoader leak somewhere and will run out of PermGen space before long.

如果数量稳定上升，您可以假设应用程序服务器或者您的代码某个地方有一个ClassLoader漏洞，不久之后将耗尽PermGen空间。

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this location is part of the application server's extended classloader, where the bulk of the websphere personalization and wpcp classes are loaded from.

这个位置是应用程序服务器的扩展类装入器的一部分，WebSphere Personalization和WPCP类大多从这里装入。

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class can be a life-saver for trying to diagnose classloader and/ or mismatched class conflicts.

想要诊断ClassLoader和/或不匹配的类冲突，class可以帮上大忙。

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to accomplish my goal of intercepting the classloading process we need to go a step further, by defining and using our own classloader for the application classes.

为了实现拦截类加载过程的目标，我们需要采取进一步的动作，对应用程序类定义和使用我们自己的classloader。

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every classloader must delegate up the hierarchy to the bootstrap loader to find a class.

在寻找类时，每个类装载器必须沿着层次结构向上委托请求，直到到达引导装载器。

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checks to see if a parent classloader can load it.

检查上级类装入器能否装入类。

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use a custom securitymanager or classloader that prevents loading of anonymous classes or other classes not under your direct control.

使用定制的SecurityManager或ClassLoader阻止加载匿名类或其他无法直接控制的类。

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by inspection, you can see if multiple copies of a classloader exist.

通过检查，您可以确定类加载器是否有多个副本。

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typically, all classes are loaded from the system classloader; however, some systems partition their runtime space with different classloaders.

通常情况下，所有类都是由系统ClassLoader装载的；可是有些系统使用不同的ClassLoader将其运行时空间进行了划分。

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components can be updated by stopping the usage of one component classloader and loading a new version of the component using a new classloader.

组件可以通过停止某个组件类加载器的使用和使用新的类加载器加载新版本组件而进行更新。

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once the class is in this classloader, all resources are able to access it.

只要类在这个类库加载器中，所有的资源就都可以访问它。

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if you go this route, each individual situation will probably require a customized wrapping classloader.

如果您采用这种方法，那么每种个别情况可能都需要一个定制的包装类装入器。

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the deployment options available are dependent upon the application server's classloader mode.

可用的部署选项取决于应用服务器的类装载器（classloader）模式。

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no objects of any class loaded by that classloader are alive ( referenced) on the java heap.

该类加载器加载的任何类的对象在Java堆中都处于非活动状态（即未被引用）。

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As a rule of thumb, unless there are strong constraints due to a specific application or environment, it is usually preferable to use the Multiple server classloader policy.

根据一般经验，除非特定的应用程序或环境存在严格约束，使用“多个”服务器类加载器策略通常较为可取。

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then select the created classloader and click the libraries link.

然后选择创建的类加载器并单击libraries链接。

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in time, the old version is freed by garbage collection, assuming the application contains no external references to classes or objects or the classloader.

最后，如果应用程序没有任何引用类、对象或类加载器，旧版本组件会被垃圾收集器释放。

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the bootstrap classloader loads core java libraries.

引导类加载器加载核心Java类库。

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a set of java class instances that reference one another must all be defined under the scope of a classloader.

一组相互引用的Java类实例必须在ClassLoader作用域下定义。

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When the applications are executed in capture mode,$ X is replaced with the timestamp and the object ID of the application classloader.

当应用在捕获模式下执行时，$X将被时间戳和应用类加载器的对象ID取代。

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you control the classloader for parent-child child-parent delegation.

您控制了父-子、子-父委托的类加载器。

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the jsp engine's classloader knows how to load jsp classes when they are all in the same package.

JSP引擎的类加载器知道当所有的JSP类都在同一个包中时该如何加载它们。

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if you use the suffix in a single-server environment, the result is one file with the timestamp and classloader id suffix.

如果在单服务环境中使用后缀，结果将是带有时间戳和类加载器ID后缀的文件。

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this policy allows an application classloader to override and provide its own version of a class that exists in the parent classloader.

该方案允许应用程序类装载器优先于父类，并提供存于父类中的自身的类版本。

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if next to no instances of classes are defined by a classloader, then it is likely that the classloader is idle.

如果类加载器几乎没有定义任何的类实例，那么这个类加载器很可能是空闲的。

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all the other classes used by the run class are core java classes, which are loaded by delegation through the parent classloader.

Run使用的其他所有类都是核心Java类，它们是通过父classloader使用委托来加载的。

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i decided that i would have to create a custom classloader to do the heavy lifting.

我决定应当创建定制类装入器来承担这个重任。

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