Created
March 1, 2016 02:35
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Locate class jar
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package com.ridge.util; | |
import java.io.File; | |
import java.net.MalformedURLException; | |
import java.net.URL; | |
import java.security.CodeSource; | |
import java.security.ProtectionDomain; | |
/** | |
* @author : chenxh | |
* @date: 13-10-31 | |
*/ | |
public class ClassLocationUtils { | |
/** | |
* 获取类所有的路径 | |
* @param cls | |
* @return | |
*/ | |
public static String where(final Class cls) { | |
if (cls == null)throw new IllegalArgumentException("null input: cls"); | |
URL result = null; | |
final String clsAsResource = cls.getName().replace('.', '/').concat(".class"); | |
final ProtectionDomain pd = cls.getProtectionDomain(); | |
if (pd != null) { | |
final CodeSource cs = pd.getCodeSource(); | |
if (cs != null) result = cs.getLocation(); | |
if (result != null) { | |
if ("file".equals(result.getProtocol())) { | |
try { | |
if (result.toExternalForm().endsWith(".jar") || | |
result.toExternalForm().endsWith(".zip")) | |
result = new URL("jar:".concat(result.toExternalForm()) | |
.concat("!/").concat(clsAsResource)); | |
else if (new File(result.getFile()).isDirectory()) | |
result = new URL(result, clsAsResource); | |
} | |
catch (MalformedURLException ignore) {} | |
} | |
} | |
} | |
if (result == null) { | |
final ClassLoader clsLoader = cls.getClassLoader(); | |
result = clsLoader != null ? | |
clsLoader.getResource(clsAsResource) : | |
ClassLoader.getSystemResource(clsAsResource); | |
} | |
return result.toString(); | |
} | |
} |
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