程序包 com.alibaba.nacos.common.packagescan.resource

类 DefaultResourceLoader

  • 所有已实现的接口:
    ResourceLoader
    public class DefaultResourceLoader
extends java.lang.Object
implements ResourceLoader
    Copy from https://github.com/spring-projects/spring-framework.git, with less modifications Default implementation of the ResourceLoader interface. 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

    • 嵌套类概要

      嵌套类 
      修饰符和类型 类 说明
      protected static class  DefaultResourceLoader.ClassPathContextResource
      ClassPathResource that explicitly expresses a context-relative path through implementing the ContextResource interface.

    • 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 addProtocolResolver​(ProtocolResolver resolver)
      Register the given resolver with this resource loader, allowing for additional protocols to be handled.
      void clearResourceCaches()
      Clear all resource caches in this resource loader.
      java.lang.ClassLoader getClassLoader()
      Return the ClassLoader to load class path resources with.
      java.util.Collection<ProtocolResolver> getProtocolResolvers()
      Return the collection of currently registered protocol resolvers, allowing for introspection as well as modification.
      Resource getResource​(java.lang.String location)
      Return a Resource handle for the specified resource location.
      protected Resource getResourceByPath​(java.lang.String path)
      Return a Resource handle for the resource at the given path.
      <T> java.util.Map<Resource,​T> getResourceCache​(java.lang.Class<T> valueType)
      Obtain a cache for the given value type, keyed by Resource.
      void setClassLoader​(java.lang.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

    • 字段详细资料

      • classLoader

        private java.lang.ClassLoader classLoader

      • protocolResolvers

        private final java.util.Set<ProtocolResolver> protocolResolvers

      • resourceCaches

        private final java.util.Map<java.lang.Class<?>,​java.util.Map<Resource,​?>> resourceCaches

    • 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 actual resource access (since 5.3). For more control, pass a specific ClassLoader to DefaultResourceLoader(ClassLoader).

        另请参阅:
        Thread.getContextClassLoader()

      • DefaultResourceLoader

        public DefaultResourceLoader​(java.lang.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​(java.lang.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 actual resource access (since 5.3).

      • getClassLoader

        public java.lang.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

      • addProtocolResolver

        public void addProtocolResolver​(ProtocolResolver resolver)
        Register the given resolver with this resource loader, allowing for additional protocols to be handled.

        Any such resolver will be invoked ahead of this loader's standard resolution rules. It may therefore also override any default rules.

        从以下版本开始:
        4.3
        另请参阅:
        getProtocolResolvers()

      • getProtocolResolvers

        public java.util.Collection<ProtocolResolver> getProtocolResolvers()
        Return the collection of currently registered protocol resolvers, allowing for introspection as well as modification.
        从以下版本开始:
        4.3

      • getResourceCache

        public <T> java.util.Map<Resource,​T> getResourceCache​(java.lang.Class<T> valueType)
        Obtain a cache for the given value type, keyed by Resource.
        参数:
        valueType - the value type, e.g. an ASM MetadataReader
        返回:
        the cache Map, shared at the ResourceLoader level
        从以下版本开始:
        5.0

      • clearResourceCaches

        public void clearResourceCaches()
        Clear all resource caches in this resource loader.
        从以下版本开始:
        5.0
        另请参阅:
        getResourceCache(java.lang.Class<T>)

      • getResource

        public Resource getResource​(java.lang.String location)
        从接口复制的说明: ResourceLoader
        Return a Resource handle for the specified resource location.

        The handle should always be a reusable resource descriptor, allowing for multiple InputStreamSource.getInputStream() calls.

        • Must support fully qualified URLs, e.g. "file:C:/test.dat".
        • Must support classpath pseudo-URLs, e.g. "classpath:test.dat".
        • Should support relative file paths, e.g. "WEB-INF/test.dat". (This will be implementation-specific, typically provided by an ApplicationContext implementation.)

        Note that a Resource handle does not imply an existing resource; you need to invoke Resource.exists() to check for existence.

        指定者:
        getResource 在接口中 ResourceLoader
        参数:
        location - the resource location
        返回:
        a corresponding Resource handle (never null)
        另请参阅:
        ResourceLoader.CLASSPATH_URL_PREFIX, Resource.exists(), InputStreamSource.getInputStream()

      • getResourceByPath

        protected Resource getResourceByPath​(java.lang.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