java web 获取路径

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1.servlet中取绝对路径

项目中WEB-INF\classes路径

String path =Thread.currentThread().getContextClassLoader().getResource("/").getPath();

读配置文件

            InputStream   is   =new BufferedInputStream(new FileInputStream(path+"jdbc.properties"));
            Properties   pt   =   new   Properties();
            pt.load(is);


            DbConfig.dbUser   =   pt.getProperty("jdbc.dbUser");
            DbConfig.dbPwd    =   pt.getProperty("jdbc.dbPwd");
            DbConfig.dbName   =   pt.getProperty("jdbc.dbName");
            DbConfig.dbHost   =   pt.getProperty("jdbc.dbHost");
            is.close();

本项目绝对路径

String path=this.getServletConfig().getServletContext().getRealPath("/");

2.struts2中项目绝对路径

String path=ServletActionContext.getServletContext().getRealPath("/");

3.spring中项目绝对路径

HttpSession session = request.getSession();

String path=session.getServletContext().getRealPath("/");

4.读web.xml中配置

  ServletContext sc=getServletContext();//getServletContext().getRealPath("/");
  GlobalInfo.proxyHost=sc.getInitParameter("proxyHost");
  GlobalInfo.proxyPort=sc.getInitParameter("proxyPort");
  GlobalInfo.proxyUser=sc.getInitParameter("proxyUser");
  GlobalInfo.proxyPwd=sc.getInitParameter("proxyPwd");

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