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HttpServletRequest客户端获取请求，客户端通过HTTP协议访问服务器时，HTTP请求头中的所有信息都封装在这个对象中。所以我们能够从对象中获取相应信息
端口
request.getServerPort() ;
获取服务器名称
request.getContextPath();
获取工程名称
request.getContextPath()；
获取servlet路径
request.getServletPath().substring(0,request.getServletPath().lastIndexOf("/"))；
request.getServerName();
System.out.println("ServerName:"+request.getServerName());
request.getServerPort();
System.out.println("ServerPort:"+request.getServerPort());
request.getContextPath();
System.out.println("ContextPath" + request.getContextPath());
request.getServletPath();
System.out.println("ServletPath" + request.getServletPath());
request.getRequestURI();
System.out.println("RequestURI" + request.getRequestURI());
request.getRequestURL();
System.out.println("RequestURL" + request.getRequestURL());
/*String beanname = requestPath.substring(requestPath.indexOf("iswust/") + 7,
requestPath.indexOf("iswust/") + 11);*/
java中HttpServletRequest常用获取url、资源名等方法总结
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原文地址：http://www.cnblogs.com/boycelee/p/5930257.html
