Java获取绝对路径

源代码转自：http://topic.csdn.net/u/20070511/02/a7b11a71-ed08-4a3d-99b1-92d6933f3ca7.html

import java.net.URL;
/**
* Java通用的绝对路径获取终极解决方案
* 获取classes,WEB-INF等的绝对路径
* @测试系统:
* Windows Linux Unix
* @测试环境:
* Tomcat6.0.10
* Resin3.1.1
* Jboss4.0.0/5.0.0
* WebLogic9.1
* WebSphere6.1
* WasCE1.1
* Apusic4.0.3
* JFox3
* Jetty6.1.3
*
* @author Jxva
* @support Jxva.Com
*
*/
public class JPath
{
public static void main(String args[])
{
JPath j=new JPath();
System.out.println(getClassPath());
System.out.println(getWebinfoPath());
System.out.println(getJxvaHome());
System.out.println(getAppPath());
System.out.println(getRootPath());
System.out.println(getJxvaFramework());
System.out.println(j.getRealPath());
}

/**
*
* @return ~/classes/
*/
public static String getClassPath(){
JPath j=new JPath();
String t=j.getRealPath();
t=t.replaceAll( "file:/ ", " "); //windows
t=t.replaceAll( "file: ", " "); //linux,unix
t=t.replaceAll( "wsjar: ", " "); //websphere wsjar: has to at jar: before
t=t.replaceAll( "jar: ", " "); //tomcat,jboss,resin,wasce,apusic
t=t.replaceAll( "zip: ", " "); //weblogic
t=t.replaceAll( "/./ ", "/ "); //weblogic
//if this class be included .jar file,will replace "/lib/*.!/ " to "/classes/ "
t=t.replaceAll( "/lib/([^/ ' ']+)!/ ", "/classes/ "); //jar
t=t.split( "/classes/ ")[0]+ "/classes/ ";
return t;
}

/**
* if this path include "WEB-INF " will return "WEB-INF " 's absolute path
* @return ~/WEB-INF/
*/
public static String getWebinfoPath(){
//remove string "classes/ "
return getClassPath().substring(0,getClassPath().length()-8);
}

/**
*
* @return ~/JxvaHome/
*/
public static String getJxvaHome(){
return getWebinfoPath()+ "JxvaHome/ ";
}

/**
*
* @return application 's path
*/
public static String getAppPath(){
String[] s=getWebinfoPath().split( "/ ");
StringBuffer sb=new StringBuffer();
for(int i=0;i <s.length-1;i++){
sb.append(s[i]+ "/ ");
}
return sb.toString();
}

/**
*
* @return root 's path
*/
public static String getRootPath(){
return getClassPath().split( "/ ")[0]+ "/ ";
}

/**
* JxvaFramework框架的公共目录,确保对根目录有可写权限,一般虚拟主机将无法使用
* @return JxvaFrameowrk
*/
public static String getJxvaFramework(){
return getRootPath()+ "JxvaFramework/ ";
}

private String getRealPath()
{
String strClassName = getClass().getName();
String strPackageName = " ";
if (getClass().getPackage() != null) strPackageName = getClass().getPackage().getName();
String strClassFileName = " ";
if (! " ".equals(strPackageName))
strClassFileName = strClassName.substring(strPackageName.length() + 1, strClassName.length());
else
strClassFileName = strClassName;
URL url = getClass().getResource(strClassFileName + ".class ");
String strURL = url.toString();
strURL = strURL.replaceAll( "%20 ", " ");
return strURL;
}
}

以下是我修改的方法，满足我的需要

import java.net.URL;<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

public class JasperPath {

/**

* 返回.Jasper文件的路径

*

* @return .Jasper文件的路径

*/

public static String getJasperPath() {

JasperPath j = new JasperPath();

String t = j.getRealPath();

t = t.replaceAll("file:/","");

t = t.replaceAll("/JasperPath.class","");

return t;

}

private String getRealPath() {

String strClassName = getClass().getName();

String strPackageName = " ";

if (getClass().getPackage() != null)

strPackageName = getClass().getPackage().getName();

String strClassFileName = " ";

if (!" ".equals(strPackageName))

strClassFileName = strClassName.substring(

strPackageName.length() + 1, strClassName.length());

else

strClassFileName = strClassName;

URL url = getClass().getResource(strClassFileName + ".class ");

String strURL = url.toString();

strURL = strURL.replaceAll("%20", " ");

return strURL;

}

}