Because the JNDI lookup can be expensive, it is good practice to store the provider object as a member variable of the portlet, and to initialize it in the init method.
因为JNDI查找开销非常大，所以最好的做法是将提供程序对象存储为Portlet的成员变量，并在init方法中对其初始化。
A callback function that creates the provider object.
一个回调函数，用于创建提供程序对象。
Error occurred when calling methods on object link provider object.
调用对象链接提供程序对象中方法出错。
Error occurred when calling methods on object link provider object. Contact your administrator.
调用对象链接提供程序对象的方法时出错。请与管理员联系。
Represents a class that is responsible for creating a new instance of a form-value provider object.
表示一个类，该类负责创建窗体值提供程序对象的新实例。
Error occurred when calling methods on object link provider object. Please contact your administrator.
调用对象链接提供程序对象中方法出错。请与您的管理员联系。
Error occurred when calling methods on object link provider object. Contact your server administrator.
调用对象链接提供程序对象的方法时出错。请与服务器管理员联系。
Represents a class that is responsible for creating a new instance of a query-string value-provider object.
表示一个类，该类负责创建查询字符串值提供程序对象的新实例。
Represents a class that is responsible for creating a new instance of an HTTP file collection value provider object.
表示一个类，该类负责创建HTTP文件集合值提供程序对象的新实例。
The property provided by the extender provider actually resides in the extender provider object itself and therefore is not a true property of the component it modifies.
扩展程序提供程序提供的属性实际驻留在扩展程序提供程序对象本身，因此并不是它修改的组件的真正属性。
The property provided by the extender provider actually resides in the extender provider object itself and therefore is not a true property of the component it modifies.
扩展程序提供程序提供的属性实际驻留在扩展程序提供程序对象本身，因此并不是它修改的组件的真正属性。
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