JSP中与路径相关的常用的几个方法

最新推荐文章于 2025-12-01 22:54:44 发布

转载最新推荐文章于 2025-12-01 22:54:44 发布 · 862 阅读

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#jsp #application #html #stylesheet #exception #session

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本文详细介绍了JSP页面中的各种内置对象及其使用方法，包括应用、配置、页面上下文、请求、会话等对象的属性与功能。通过实例展示了如何获取服务器信息、请求路径等关键数据。

http:/localhost/123/jsp/test.jsp: <%@ page language="java" pageEncoding="UTF-8"%> <%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %> <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %> <%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %> <%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html:html lang="true"> <head> <html:base /> <title>test.jsp</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page">  </head> <body> <p> <h2>application - javax.servlet.ServletContext</h2> application.getRealPath("/")<%=application.getRealPath("/") %><br> application.getMajorVersion() - <%=application.getMajorVersion() %><br> application.getMimeType("txt") - <%=application.getMimeType("txt") %><br> application.getServerInfo() - <%=application.getServerInfo() %><br> application.getServletContextName() - <%=application.getServletContextName() %><br> application.getContext() </p> <p> <h2>config - javax.servlet.ServletConfig</h2> config.getServletName() - <%=config.getServletName() %><br> config.getServletContext()<br> </p> <p> <h2>pageContext - javax.servlet.jsp.PageContext</h2> pageContext.getRequest()（JSP中的requset隐式对象）<br> pageContext.getResponse()（JSP中的response隐式对象）<br> pageContext.getServletConfig()（JSP中的config隐式对象）<br> pageContext.getServletContext()（JSP中的application隐式对象）<br> pageContext.getException()（JSP中的exception隐式对象）<br> pageContext.getSession()（JSP中的session隐式对象）<br> pageContext.getOut()（JSP中的out隐式对象） </p> <p> <h2>request - javax.servlet.http.HttpServletRequest</h2> request.getLocalAddr() - <%=request.getLocalAddr() %><br> request.getServletPath() - <%=request.getServletPath() %><br> request.getContextPath() - <%=request.getContextPath() %><br> request.getLocalName() - <%=request.getLocalName() %><br> request.getLocalPort() - <%=request.getLocalPort() %><br> request.getPathInfo() - <%=request.getPathInfo() %><br> request.getProtocol() - <%=request.getProtocol() %><br> request.getQueryString() - <%=request.getQueryString() %><br> request.getRemoteAddr() - <%=request.getRemoteAddr() %><br> request.getRemoteHost() - <%=request.getRemoteHost() %><br> request.getRemotePort() - <%=request.getRemotePort() %><br> request.getRemoteUser() - <%=request.getRemoteUser() %><br> request.getRequestedSessionId():<%=request.getRequestedSessionId() %><br> request.getRequestURI() - <%=request.getRequestURI() %><br> request.getRequestURL() - <%=request.getRequestURL() %> </p> <p> <h2>session - javax.servlet.http.HttpSession</h2> session.getServletContext() </p> </body> </html:html> 客户端显示如下： application - javax.servlet.ServletContext application.getRealPath("/")F:/workspace/tomcat/123/ application.getMajorVersion() - 2 application.getMimeType("txt") - null application.getServerInfo() - Apache Tomcat/5.0.30 application.getServletContextName() - null application.getContext() config - javax.servlet.ServletConfig config.getServletName() - jsp config.getServletContext() pageContext - javax.servlet.jsp.PageContext pageContext.getRequest() pageContext.getResponse() pageContext.getServletConfig() pageContext.getServletContext() pageContext.getException() pageContext.getSession() pageContext.getOut() request - javax.servlet.http.HttpServletRequest request.getLocalAddr() - 127.0.0.1 request.getServletPath() - /jsp/test.jsp request.getContextPath() - /123 request.getLocalName() - 127.0.0.1 request.getLocalPort() - 80 request.getPathInfo() - null request.getProtocol() - HTTP/1.1 request.getQueryString() - null request.getRemoteAddr() - 127.0.0.1 request.getRemoteHost() - 127.0.0.1 request.getRemotePort() - 1211 request.getRemoteUser() - null request.getRequestedSessionId():5AFAE9C0A164621D4F8E0DAF2F253C92 request.getRequestURI() - /123/jsp/test.jsp request.getRequestURL() - http://localhost/123/jsp/test.jsp session - javax.servlet.http.HttpSession session.getServletContext() 注： http://localhost/123/taglib/html/result.jsp中使用以下方法 request.getServletPath() :返回request的请求路径的相对于应用程序的相对路径 request.getContextPath()返回应用程序上下文相对路径 this.getRealPath(String str)返回UIL中str对应于本地磁盘的绝对路径 request.getLocalAddr() 返回服务器IP地址