gdwebpath.java

来自「本书由浅入深、循序渐进地介绍了MVC的体系结构和如何构建一个基于MVC的Web框」· Java 代码 · 共 45 行

package com.gd.mvc.util;
import java.io.IOException;
import java.net.URL;
import java.security.CodeSource;
import java.security.ProtectionDomain;


/**
 * 这是公用类，用来获取Web环境的路径，名称等信息.
 */
public class GdWebPath {
    private String webName;
    private String webPhysicsPath;
    
    private String systemName;
    private String systemPath;
    
    /**
     * 该名称返回的是Web名称，如：myApp
     * @return String
     */
    public String getWebName(){
        return this.webName;
    }
    
    /**
     * 该路径指的是Web环境的物理路径，如：D:/eclipse/workspace/myApp
     * @return String
     */
    public String getWebPhysicsPath(){
        return this.webPhysicsPath;
    }
    
    public void getPath() throws IOException {
	    Class cls2 = this.getClass();
	    ProtectionDomain pDomain = cls2.getProtectionDomain();
	    CodeSource cSource = pDomain.getCodeSource();
	    URL loc = cSource.getLocation();//file:/D:/eclipse/workspace/myApp/WEB-INF/classes/com/gd/web/WebPath.class
	    
	    webPhysicsPath = loc.toString().substring(loc.toString().indexOf("/") + 1, loc.toString().indexOf("WEB-INF") - 1);
	    int num = webPhysicsPath.lastIndexOf("/");
	    webName = webPhysicsPath.substring(num + 1, webPhysicsPath.length());
    }
    
}