com.vip.vjtools.vjkit.io

Class ResourceUtil

java.lang.Object

com.vip.vjtools.vjkit.io.ResourceUtil

public class ResourceUtil
extends Object

针对Jar包内的文件的工具类.

1.ClassLoader 不指定contextClass时，优先使用Thread.getContextClassLoader()， 如果ContextClassLoader未设置则使用Guava Resources类的ClassLoader 指定contextClass时，则直接使用该contextClass的ClassLoader.

2.路径 不指定contextClass时，按URLClassLoader的实现, 从jar file中查找resourceName， 所以resourceName无需以"/"打头即表示jar file中的根目录，带了"/" 反而导致JarFile.getEntry(resouceName)时没有返回. 指定contextClass时，class.getResource()会先对name进行处理再交给classLoader，打头的"/"的会被去除，不以"/"打头则表示与该contextClass package的相对路径, 会先转为绝对路径.

3.同名资源 如果有多个同名资源，除非调用getResources()获取全部资源，否则在URLClassLoader中按ClassPath顺序打开第一个命中的Jar文件.

Constructor Summary

Constructors

Constructor and Description
ResourceUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static InputStream	asStream(Class<?> contextClass, String resourceName) 读取文件的每一行，读取规则见本类注释.
static InputStream	asStream(String resourceName) 读取规则见本类注释.
static URL	asUrl(Class<?> contextClass, String resourceName) 读取规则见本类注释.
static URL	asUrl(String resourceName) 读取规则见本类注释.
static List<URL>	getResourcesQuietly(String resourceName)
static List<URL>	getResourcesQuietly(String resourceName, ClassLoader contextClassLoader)
static List<String>	toLines(Class<?> contextClass, String resourceName) 读取文件的每一行，读取规则见本类注释.
static List<String>	toLines(String resourceName) 读取文件的每一行，读取规则见本类注释.
static String	toString(Class<?> contextClass, String resourceName) 读取文件的每一行，读取规则见本类注释.
static String	toString(String resourceName) 读取文件的每一行，读取规则见本类注释.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ResourceUtil

public ResourceUtil()

Method Detail

asUrl

public static URL asUrl(String resourceName)

读取规则见本类注释.

asUrl

public static URL asUrl(Class<?> contextClass,
        String resourceName)

读取规则见本类注释.

asStream

public static InputStream asStream(String resourceName)
                            throws IOException

读取规则见本类注释.

Throws:

IOException

asStream

public static InputStream asStream(Class<?> contextClass,
                   String resourceName)
                            throws IOException

读取文件的每一行，读取规则见本类注释.

Throws:

IOException

toString

public static String toString(String resourceName)
                       throws IOException

读取文件的每一行，读取规则见本类注释.

Throws:

IOException

toString

public static String toString(Class<?> contextClass,
              String resourceName)
                       throws IOException

读取文件的每一行，读取规则见本类注释.

Throws:

IOException

toLines

public static List<String> toLines(String resourceName)
                            throws IOException

读取文件的每一行，读取规则见本类注释.

Throws:

IOException

toLines

public static List<String> toLines(Class<?> contextClass,
                   String resourceName)
                            throws IOException

读取文件的每一行，读取规则见本类注释.

Throws:

IOException

getResourcesQuietly

public static List<URL> getResourcesQuietly(String resourceName)

getResourcesQuietly

public static List<URL> getResourcesQuietly(String resourceName,
                            ClassLoader contextClassLoader)