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1. ÔÚServlet\FilterµÈServlet web»·¾³ÖУ¬Ö»Òª»ñµÃjavax.servlet.ServletContextÀàÐÍ£¬Ôò¿ÉÒÔͨ¹ý getRealPath("...") »ñµÃ·¾¶¡£Ïà¶Ô·¾¶ÖÐ×î¶¥²ãĿ¼¿Éͨ¹ý²ÎÊý“"/"”»ñÈ¡¡£
request.getSession().getServletContext().getRealPath("/");
2. JSP×Ô¶¨Òå±êÇ©javax.servlet.jsp.tagext.TagSupport
((javax.servlet.ServletContext)pageContext).getRealPath("");
3. ÆÕͨJava Class¶ÔÏóÎļþÖÐʹÓãº
this.getClass().getResource("???");
Èç¹ûClassÎļþÔÚ¶¥²ãĿ¼£¨°ü£©ÖУ¬ÇÒ“???”Ϊ¿Õ°××Ö·û´®£¨“""”£©£¬¼°´Ë·½·¨ÔÚjarÎļþÖÐÖ´ÐÐÔò»á·µ»Ønull¡£ÔÚ¶¥²ãĿ¼£¨°ü£©ÒÔϵĸ÷²ãĿ¼£¨°ü£©Ôò»á·µ»Ø°üº¬Ð­ÒéµÄURL¡£¸÷²ãÎļþ¼Ð£¨°ü£©Ö®¼äʹÓÓ/”·Ö¸ô¡£
ÏîĿλÖãºD:\BeyondTrack--reference\jBPMWebDesigner
javacode λÖãºD:\BeyondTrack--reference\jBPMWebDesigner\build\web\classes\net\java\dev\beyondtrack\web\workflow\designer\japplet
ÎļþλÖãºD:\BeyondTrack--reference\jBPMWebDesigner\src\java\net\java\dev\beyondtrack\web\workflow\designer\icon
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package net.java.dev.beyondtrack.web.workflow.designer.japplet;
import javax.swing.ImageIcon;
/**
*
* @author pub32
*/
public class NewMain {
public NewMain () {
  System.out.println(this.getClass().getResource(""));
  System.out.println(this.getClass().getResource("."));
  System.out.println(this.getClass().getResource(".."));
  System.out.println(this.getClass().getResource("/"));
  System.out.println(this.getClass().getResource("point.png"));
  System.out.println(this.getClass().getResource("/point.png"));
  System.out.println(this.getClass().getResource("./point.png"));
  System.out.println(this.getClass().getResource("../point.png"));
  System.out.println(this.getClass().getResource("icon/point.png"));
  System.out.println(this.getClass().getResource("/


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