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;

 

 

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;

      

    }

   

}