org.jretty.util.resource

类 DefaultResourceLoader

java.lang.Object

org.jretty.util.resource.DefaultResourceLoader

所有已实现的接口:

ResourceLoader

直接已知子类:

ClassRelativeResourceLoader, FileSystemResourceLoader

public class DefaultResourceLoader
extends Object
implements ResourceLoader

Default implementation of the ResourceLoader interface. Used by ResourceEditor, and serves as base class for org.springframework.context.support.AbstractApplicationContext. Can also be used standalone.

Will return a UrlResource if the location value is a URL, and a ClassPathResource if it is a non-URL path or a "classpath:" pseudo-URL.

从以下版本开始:

10.03.2004

作者:

Juergen Hoeller

另请参阅:

FileSystemResourceLoader, org.springframework.context.support.ClassPathXmlApplicationContext

字段概要

从接口继承的字段 org.jretty.util.resource.ResourceLoader

CLASSPATH_URL_PREFIX

构造器概要

构造器

构造器和说明
DefaultResourceLoader() Create a new DefaultResourceLoader.
DefaultResourceLoader(ClassLoader classLoader) Create a new DefaultResourceLoader.

方法概要

限定符和类型	方法和说明
ClassLoader	getClassLoader() Return the ClassLoader to load class path resources with.
Resource	getResource(String location) DefaultResourceLoader取resource的顺序： 判断是否为 classpath URL，例如 classpath:test.dat 判断是否为 标准URL 路径，例如 file:C:/test.dat，http://www.math.com/test.html 交给子类的 getResourceByPath(location) 方法进一步去判断。
protected Resource	getResourceByPath(String path) Return a Resource handle for the resource at the given path.
void	setClassLoader(ClassLoader classLoader) Specify the ClassLoader to load class path resources with, or null for using the thread context class loader at the time of actual resource access.

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

DefaultResourceLoader

public DefaultResourceLoader()

Create a new DefaultResourceLoader.

ClassLoader access will happen using the thread context class loader at the time of this ResourceLoader's initialization.

另请参阅:

Thread.getContextClassLoader()

DefaultResourceLoader

public DefaultResourceLoader(ClassLoader classLoader)

Create a new DefaultResourceLoader.

参数:

classLoader - the ClassLoader to load class path resources with, or null for using the thread context class loader at the time of actual resource access

方法详细资料

setClassLoader

public void setClassLoader(ClassLoader classLoader)

Specify the ClassLoader to load class path resources with, or null for using the thread context class loader at the time of actual resource access.

The default is that ClassLoader access will happen using the thread context class loader at the time of this ResourceLoader's initialization.

getClassLoader

public ClassLoader getClassLoader()

Return the ClassLoader to load class path resources with.

Will get passed to ClassPathResource's constructor for all ClassPathResource objects created by this resource loader.

指定者:

getClassLoader 在接口中 ResourceLoader

返回:

the ClassLoader (only null if even the system ClassLoader isn't accessible)

另请参阅:

ClassPathResource

getResource

public Resource getResource(String location)

 DefaultResourceLoader取resource的顺序：
  判断是否为 classpath URL，例如 classpath:test.dat
  判断是否为 标准URL 路径，例如 file:C:/test.dat，http://www.math.com/test.html
  交给子类的 getResourceByPath(location) 方法进一步去判断。
  例如，
    对于FileSystemResourceLoader子类，则按照FileSystemResource去解析
    对于ServletContextResourceLoader子类，则按照ServletContextResource去解析
  
  注意：如果文件不存在，该方法不会报错，而是会返回一个不可用的Resource实例，
    对于 DefaultResourceLoader，返回的是 DefaultResourceLoader.ClassPathContextResource
    对于 FileSystemResourceLoader，返回的是 FileSystemResourceLoader.FileSystemContextResource
    对于 ServletContextResourceLoader，返回的是 org.zollty.util.resource.web.ServletContextResource
  

指定者:

getResource 在接口中 ResourceLoader

参数:

location - the resource location

返回:

a corresponding Resource handle

另请参阅:

ResourceLoader.CLASSPATH_URL_PREFIX, org.springframework.core.io.Resource#exists, org.springframework.core.io.Resource#getInputStream

getResourceByPath

protected Resource getResourceByPath(String path)

Return a Resource handle for the resource at the given path.

The default implementation supports class path locations. This should be appropriate for standalone implementations but can be overridden, e.g. for implementations targeted at a Servlet container.

参数:

path - the path to the resource

返回:

the corresponding Resource handle

另请参阅:

ClassPathResource, org.springframework.context.support.FileSystemXmlApplicationContext#getResourceByPath, org.springframework.web.context.support.XmlWebApplicationContext#getResourceByPath