一、工具类代码ResourceLoadUtil.java
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import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
public class ResourceLoadUtil {
/**
* @param args
*/
public static void main(String[] args) {
System.out.println( "ByClazz...\n--------------------------" );
System.out.println(loadResourceByClazz(String. class , "/java/lang/String.class" ));
System.out.println(loadResourceByClazz(String. class , "/ResourceLoadUtil.class" ));
System.out.println();
System.out.println( "ByClasLoader...\n--------------------------" );
System.out.println(loadResourceByClassLoader( "java/lang/String.class" ));
System.out.println(loadResourceByClassLoader( "ResourceLoadUtil.class" ));
System.out.println();
System.out.println( "sByClasLoader...\n--------------------------" );
System.out.println(loadResourcesByClassLoader( "java/lang/String.class" ));
System.out.println(loadResourcesByClassLoader( "ResourceLoadUtil.class" ));
System.out.println(loadResourcesByClassLoader( "struts-plugin.xml" ));
}
/**
* 根据Class加载资源文件
*
* @param clazz
* @param path
* 以'/'开头的路径: 使用绝对路径寻找文件(以ClassPath为根路径开始)<br>
* 否则: 使用相对路径寻找文件(相对于clazz位置路径开始)
* @return
*/
public static InputStream loadResourceByClazz(Class<?> clazz, String path) {
return clazz.getResourceAsStream(path);
}
/**
* 根据ClassLoader加载资源文件(单个), 使用默认的ClassLoader!
*
* @param path
* 不能以'/'开头的路径
* @return
*/
public static InputStream loadResourceByClassLoader(String path) {
return loadResourceByClassLoader( null , path);
}
/**
* 根据ClassLoader加载资源文件(单个), 使用默认的ClassLoader!
*
* @param path
* 不能以'/'开头的路径
* @return
*/
public static InputStream loadResourceByClassLoader(ClassLoader cl, String path) {
if (cl == null ) {
cl = Thread.currentThread().getContextClassLoader();
}
return cl.getResourceAsStream(path);
}
/**
* 根据ClassLoader加载资源文件(多个),使用默认的ClassLoader!
*
* @param path
* 不能以'/'开头的路径
* @return
*/
public static List<URL> loadResourcesByClassLoader(String path) {
return loadResourcesByClassLoader( null , path);
}
/**
* 根据ClassLoader加载资源文件(多个),使用指定的ClassLoader!
*
* @param path
* 不能以'/'开头的路径
* @return
*/
public static List<URL> loadResourcesByClassLoader(ClassLoader cl, String path) {
if (cl == null ) {
cl = Thread.currentThread().getContextClassLoader();
}
List<URL> urlLst = new ArrayList<URL>();
try {
Enumeration<URL> urlsEnum = cl.getResources(path);
while (urlsEnum.hasMoreElements()) {
URL url = (URL) urlsEnum.nextElement();
urlLst.add(url);
}
} catch (IOException e) {
e.printStackTrace();
}
return urlLst;
}
}
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二、执行结果
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ByClazz...
--------------------------
sun.net.www.protocol.jar.JarURLConnection$JarURLInputStream @11cfb549
java.io.BufferedInputStream @a422ede
ByClasLoader...
--------------------------
sun.net.www.protocol.jar.JarURLConnection$JarURLInputStream @7f12f614
java.io.BufferedInputStream @35d9dc39
sByClasLoader...
--------------------------
[jar:file:/D:/Java/jdk1. 6 .0_25/jre/lib/rt.jar!/java/lang/String. class ]
[file:/E:/workspace/JBDS/Spring+Struts2-Integration/target/classes/ResourceLoadUtil. class ]
[jar:file:/E:/360data/%e9% 87 %8d%e8%a6% 81 %e6% 95 %b0%e6%8d%ae/.m2/repository/org/apache/struts/struts2-spring-plugin/ 2.3 . 4.1 /struts2-spring-plugin- 2.3 . 4.1 .jar!/struts-plugin.xml, jar:file:/E:/360data/%e9% 87 %8d%e8%a6% 81 %e6% 95 %b0%e6%8d%ae/.m2/repository/org/apache/struts/struts2-config-browser-plugin/ 2.3 . 4.1 /struts2-config-browser-plugin- 2.3 . 4.1 .jar!/struts-plugin.xml]
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原文链接:http://feticoolo.iteye.com/blog/1695190