1.JSP入门

一.JSP基础

1.JSP概述

　　JSP（Java Server Pages）是JavaWeb服务器端的动态资源。它与html页面的作用是相同的，显示数据和获取数据。

　　JSP = html + Jsp脚本（代码片段） + JSP动态标签

2.JSP语法　

<%=…%>：输出！打到这里内容等同与打到response.getWriter().print(…)中了。

<%=”hello”%>，可以

<%=System.out.println(“hello”);%>，不可以！

<%= Math.min(10,20)%>，可以

<%...%>：代码片段！打到这里内容等同与打到方法中。注：每次访问不会在原值上加加，因为是局部变量。并且多个代码片段之间是互通的！

<%int i = 10;i = 100;%>，可以。

<%System.out.print(“hello”);%>，可以

<%private int a = 10;%>，不可以

<%public volid fun1() {}%>，不可以

<%!...%>：定义（声明）！打到这里的内容等同与打到类体中。class A {…} 注：每次访问时会在原值上加加，因为是全局变量。

<%! int a;%>：可以；

<%! public void fun2() {..}%>：可以

<%!private class A {}%>：可以

　　　　注：在声明中，不能使用9大内置对象，因为查看JSP真身发现9大内置对象都在_jspservice下方，而声明实在_jspservice上方的，所以不能使用九大内置对象，只有java代码段和表达式可以使用这九大内置对象。

JSP内置对象：不用创建即可直接使用！

l application：SevletContext

l request：HttpServletRequest

l response：HttpServletResponse

l session：HttpSession

l out：JspWriter，等同与response.getWriter()

l config：ServletConfig

l exception：异常对象，它是Throwable

l page：Object，它表示this。例如：Object page = this;

l pageContext：页面上下文！PageContext

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <title>JSP演示</title>

  </head>

  <body>

    <h1>JSP演示</h1>

    <%

        // Java语句

        String s1 = "hello jsp";

        // 不会输出到客户端，而是在服务器端的控制台打印

        System.out.println(s1);

    %>

  <!-- 输出到客户端浏览器上 -->

    输出变量：<%=s1 %><br/>

    输出int类型常量：<%=100 %><br/>

    输出String类型常量：<%="你好" %><br/>

    <br/>

    使用表达式输出常量是很傻的一件事，因为可以直接使用html即可，下面是输出上面的常量：<br/>

    100<br/>

    你好

  </body>

</html>

输出三种形式：
　　1.直接打字
　　2.out.print("你好")
　　3.response.getwriter(),print("你好")

3.JSP原理

jsp就是servlet!
tomcat会把jsp转换成html，其实是把jsp变成.java
然后把.java编译成.class，其实这个类就是一个servlet!
而这个servlet中存在大量out.write(“<html>”)，这就是最终的输出结果，即html

4.jsp注释　

我们现在已经知道JSP是需要先编译成.java，再编译成.class的。其中<%-- ... --%>中的内容在JSP编译成.java时会被忽略的，即JSP注释。

也可以在JSP页面中使用html注释：，但这个注释在JSP编译成的.java中是存在的，它不会被忽略，而且会被发送到客户端浏览器。但是在浏览器显示服务器发送过来的html时，因为是html的注释，所以浏览器是不会显示它的。

附:jsp真身代码

package org.apache.jsp;

import javax.servlet.*;

import javax.servlet.http.*;

import javax.servlet.jsp.*;

import java.util.*;

public final class regist_jsp extends org.apache.jasper.runtime.HttpJspBase

    implements org.apache.jasper.runtime.JspSourceDependent,

                 org.apache.jasper.runtime.JspSourceImports {

  private static final javax.servlet.jsp.JspFactory _jspxFactory =

          javax.servlet.jsp.JspFactory.getDefaultFactory();

  private static java.util.Map<java.lang.String,java.lang.Long> _jspx_dependants;

  static {

    _jspx_dependants = new java.util.HashMap<java.lang.String,java.lang.Long>(2);

    _jspx_dependants.put("jar:file:/F:/tomcat/webapps/day11_30/WEB-INF/lib/jstl-1.2.jar!/META-INF/c.tld", Long.valueOf(1153356282000L));

    _jspx_dependants.put("/WEB-INF/lib/jstl-1.2.jar", Long.valueOf(1480475931708L));

  }

  private static final java.util.Set<java.lang.String> _jspx_imports_packages;

  private static final java.util.Set<java.lang.String> _jspx_imports_classes;

  static {

    _jspx_imports_packages = new java.util.HashSet<>();

    _jspx_imports_packages.add("javax.servlet");

    _jspx_imports_packages.add("java.util");

    _jspx_imports_packages.add("javax.servlet.jsp");

    _jspx_imports_packages.add("javax.servlet.http");

    _jspx_imports_classes = null;

  }

  private org.apache.jasper.runtime.TagHandlerPool _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody;

  private volatile javax.el.ExpressionFactory _el_expressionfactory;

  private volatile org.apache.tomcat.InstanceManager _jsp_instancemanager;

  public java.util.Map<java.lang.String,java.lang.Long> getDependants() {

    return _jspx_dependants;

  }

  public java.util.Set<java.lang.String> getPackageImports() {

    return _jspx_imports_packages;

  }

  public java.util.Set<java.lang.String> getClassImports() {

    return _jspx_imports_classes;

  }

  public javax.el.ExpressionFactory _jsp_getExpressionFactory() {

    if (_el_expressionfactory == null) {

      synchronized (this) {

        if (_el_expressionfactory == null) {

          _el_expressionfactory = _jspxFactory.getJspApplicationContext(getServletConfig().getServletContext()).getExpressionFactory();

        }

      }

    }

    return _el_expressionfactory;

  }

  public org.apache.tomcat.InstanceManager _jsp_getInstanceManager() {

    if (_jsp_instancemanager == null) {

      synchronized (this) {

        if (_jsp_instancemanager == null) {

          _jsp_instancemanager = org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(getServletConfig());

        }

      }

    }

    return _jsp_instancemanager;

  }

  public void _jspInit() {

    _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody = org.apache.jasper.runtime.TagHandlerPool.getTagHandlerPool(getServletConfig());

  }

  public void _jspDestroy() {

    _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.release();

  }

  public void _jspService(final javax.servlet.http.HttpServletRequest request, final javax.servlet.http.HttpServletResponse response)

        throws java.io.IOException, javax.servlet.ServletException {

final java.lang.String _jspx_method = request.getMethod();

if (!"GET".equals(_jspx_method) && !"POST".equals(_jspx_method) && !"HEAD".equals(_jspx_method) && !javax.servlet.DispatcherType.ERROR.equals(request.getDispatcherType())) {

response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED, "JSPs only permit GET POST or HEAD");

return;

}

    final javax.servlet.jsp.PageContext pageContext;

    javax.servlet.http.HttpSession session = null;

    final javax.servlet.ServletContext application;

    final javax.servlet.ServletConfig config;

    javax.servlet.jsp.JspWriter out = null;

    final java.lang.Object page = this;

    javax.servlet.jsp.JspWriter _jspx_out = null;

    javax.servlet.jsp.PageContext _jspx_page_context = null;

    try {

      response.setContentType("text/html;charset=utf-8");

      pageContext = _jspxFactory.getPageContext(this, request, response,

                  null, true, 8192, true);

      _jspx_page_context = pageContext;

      application = pageContext.getServletContext();

      config = pageContext.getServletConfig();

      session = pageContext.getSession();

      out = pageContext.getOut();

      _jspx_out = out;

      out.write("\r\n");

      out.write("\r\n");

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

      out.write("\r\n");

      out.write("\r\n");

      out.write("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\r\n");

      out.write("<html>\r\n");

      out.write("  <head>\r\n");

      out.write("    <base href=\"");

      out.print(basePath);

      out.write("\">\r\n");

      out.write("    \r\n");

      out.write("    <title>My JSP 'regist.jsp' starting page</title>\r\n");

      out.write("    \r\n");

      out.write("\t<meta http-equiv=\"pragma\" content=\"no-cache\">\r\n");

      out.write("\t<meta http-equiv=\"cache-control\" content=\"no-cache\">\r\n");

      out.write("\t<meta http-equiv=\"expires\" content=\"0\">    \r\n");

      out.write("\t<meta http-equiv=\"keywords\" content=\"keyword1,keyword2,keyword3\">\r\n");

      out.write("\t<meta http-equiv=\"description\" content=\"This is my page\">\r\n");

      out.write("\t<!--\r\n");

      out.write("\t<link rel=\"stylesheet\" type=\"text/css\" href=\"styles.css\">\r\n");

      out.write("\t-->\r\n");

      out.write("<script type=\"text/javascript\">\r\n");

      out.write("\tfunction _change(){\r\n");

      out.write("\t\tvar imgEle = document.getElementById(\"imgEle\");\r\n");

      out.write("\t\timgEle.src = \"");

      if (_jspx_meth_c_005furl_005f0(_jspx_page_context))

        return;

      out.write("?\"+ new Date().getTime(); \r\n");

      out.write("\t}\r\n");

      out.write("</script>\r\n");

      out.write("  </head>\r\n");

      out.write("  \r\n");

      out.write("  <body>\r\n");

      out.write("<h1>注册页面</h1>\r\n");

      out.write("<!--\r\n");

      out.write("1.显示表单页面\r\n");

      out.write("2.显示服务器端的输入校验错误信息\r\n");

      out.write("3.显示后台校验错误信息\r\n");

      out.write("4.校验失败时回显数据\r\n");

      out.write("-->\r\n");

      out.write("<p style=\"color:red;font-size:10pt;font-weight:900\">");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${msg}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("</p>\r\n");

      out.write("<form action=\"");

      if (_jspx_meth_c_005furl_005f1(_jspx_page_context))

        return;

      out.write("\" method=\"post\">\r\n");

      out.write("用户名：<input type=\"text\" name=\"username\" value=\"");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${form.username}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("\"/>\r\n");

      out.write("\t\t<span style=\"color:red;font-size:10pt;font-weight:900\">");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${errors.username}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("</span>\r\n");

      out.write("\t\t<br/>\t\t\r\n");

      out.write("性　别：<input type=\"text\" name=\"gender\" value=\"");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${form.gender}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("\"/>\r\n");

      out.write("\t\t<span style=\"color:red;font-size:10pt;font-weight:900\">");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${errors.gender}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("</span>\r\n");

      out.write("\t\t<br/>\r\n");

      out.write("年　龄：<input type=\"text\" name=\"age\" value=\"");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${form.age}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("\"/>\r\n");

      out.write("\t\t<span style=\"color:red;font-size:10pt;font-weight:900\">");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${errors.age}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("</span>\r\n");

      out.write("\t\t<br/>\r\n");

      out.write("密　码：<input type=\"password\" name=\"password\"/>\r\n");

      out.write("\t\t<span style=\"color:red;font-size:10pt;font-weight:900\">");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${errors.password}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("</span>\r\n");

      out.write("\t\t<br/>\r\n");

      out.write("确认密码：<input type=\"password\" name=\"repassword\"/>\r\n");

      out.write("\t\t<span style=\"color:red;font-size:10pt;font-weight:900\">");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${errors.repassword}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("</span>\r\n");

      out.write("\t\t<br/>\r\n");

      out.write("验证码：<input type=\"text\" name=\"verifyCode\" size=\"3\" value=\"");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${form.verifyCode}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("\"/>\r\n");

      out.write("\t\t<img  src=\"");

      if (_jspx_meth_c_005furl_005f2(_jspx_page_context))

        return;

      out.write("\" id=\"imgEle\"/>\r\n");

      out.write("\t\t<a href=\"javascript:_change()\">换一张</a>\r\n");

      out.write("\t\t<span style=\"color:red;font-size:10pt;font-weight:900\">");

      out.write((java.lang.String) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate("${errors.verifyCode}", java.lang.String.class, (javax.servlet.jsp.PageContext)_jspx_page_context, null));

      out.write("</span>\r\n");

      out.write("\t\t<br/>\r\n");

      out.write("\t<input type=\"submit\" value=\"注册\"/>\r\n");

      out.write("</form>\r\n");

      out.write("  </body>\r\n");

      out.write("</html>\r\n");

    } catch (java.lang.Throwable t) {

      if (!(t instanceof javax.servlet.jsp.SkipPageException)){

        out = _jspx_out;

        if (out != null && out.getBufferSize() != 0)

          try {

            if (response.isCommitted()) {

              out.flush();

            } else {

              out.clearBuffer();

            }

          } catch (java.io.IOException e) {}

        if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);

        else throw new ServletException(t);

      }

    } finally {

      _jspxFactory.releasePageContext(_jspx_page_context);

    }

  }

  private boolean _jspx_meth_c_005furl_005f0(javax.servlet.jsp.PageContext _jspx_page_context)

          throws java.lang.Throwable {

    javax.servlet.jsp.PageContext pageContext = _jspx_page_context;

    javax.servlet.jsp.JspWriter out = _jspx_page_context.getOut();

    //  c:url

    org.apache.taglibs.standard.tag.rt.core.UrlTag _jspx_th_c_005furl_005f0 = (org.apache.taglibs.standard.tag.rt.core.UrlTag) _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.get(org.apache.taglibs.standard.tag.rt.core.UrlTag.class);

    _jspx_th_c_005furl_005f0.setPageContext(_jspx_page_context);

    _jspx_th_c_005furl_005f0.setParent(null);

    // /regist.jsp(26,16) name = value type = null reqTime = true required = false fragment = false deferredValue = false expectedTypeName = null deferredMethod = false methodSignature = null

    _jspx_th_c_005furl_005f0.setValue("/VerifyCodeServlet");

    int _jspx_eval_c_005furl_005f0 = _jspx_th_c_005furl_005f0.doStartTag();

    if (_jspx_th_c_005furl_005f0.doEndTag() == javax.servlet.jsp.tagext.Tag.SKIP_PAGE) {

      _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.reuse(_jspx_th_c_005furl_005f0);

      return true;

    }

    _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.reuse(_jspx_th_c_005furl_005f0);

    return false;

  }

  private boolean _jspx_meth_c_005furl_005f1(javax.servlet.jsp.PageContext _jspx_page_context)

          throws java.lang.Throwable {

    javax.servlet.jsp.PageContext pageContext = _jspx_page_context;

    javax.servlet.jsp.JspWriter out = _jspx_page_context.getOut();

    //  c:url

    org.apache.taglibs.standard.tag.rt.core.UrlTag _jspx_th_c_005furl_005f1 = (org.apache.taglibs.standard.tag.rt.core.UrlTag) _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.get(org.apache.taglibs.standard.tag.rt.core.UrlTag.class);

    _jspx_th_c_005furl_005f1.setPageContext(_jspx_page_context);

    _jspx_th_c_005furl_005f1.setParent(null);

    // /regist.jsp(40,14) name = value type = null reqTime = true required = false fragment = false deferredValue = false expectedTypeName = null deferredMethod = false methodSignature = null

    _jspx_th_c_005furl_005f1.setValue("RegistServlet");

    int _jspx_eval_c_005furl_005f1 = _jspx_th_c_005furl_005f1.doStartTag();

    if (_jspx_th_c_005furl_005f1.doEndTag() == javax.servlet.jsp.tagext.Tag.SKIP_PAGE) {

      _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.reuse(_jspx_th_c_005furl_005f1);

      return true;

    }

    _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.reuse(_jspx_th_c_005furl_005f1);

    return false;

  }

  private boolean _jspx_meth_c_005furl_005f2(javax.servlet.jsp.PageContext _jspx_page_context)

          throws java.lang.Throwable {

    javax.servlet.jsp.PageContext pageContext = _jspx_page_context;

    javax.servlet.jsp.JspWriter out = _jspx_page_context.getOut();

    //  c:url

    org.apache.taglibs.standard.tag.rt.core.UrlTag _jspx_th_c_005furl_005f2 = (org.apache.taglibs.standard.tag.rt.core.UrlTag) _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.get(org.apache.taglibs.standard.tag.rt.core.UrlTag.class);

    _jspx_th_c_005furl_005f2.setPageContext(_jspx_page_context);

    _jspx_th_c_005furl_005f2.setParent(null);

    // /regist.jsp(57,13) name = value type = null reqTime = true required = false fragment = false deferredValue = false expectedTypeName = null deferredMethod = false methodSignature = null

    _jspx_th_c_005furl_005f2.setValue("/VerifyCodeServlet");

    int _jspx_eval_c_005furl_005f2 = _jspx_th_c_005furl_005f2.doStartTag();

    if (_jspx_th_c_005furl_005f2.doEndTag() == javax.servlet.jsp.tagext.Tag.SKIP_PAGE) {

      _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.reuse(_jspx_th_c_005furl_005f2);

      return true;

    }

    _005fjspx_005ftagPool_005fc_005furl_0026_005fvalue_005fnobody.reuse(_jspx_th_c_005furl_005f2);

    return false;

  }

}

1.JSP入门的更多相关文章

Jsp入门学习笔记
#Jsp入门一.JSP基础语法 1.JSP指令: page inlcude taglib 2.JSP注释: a.html注释:  b.jsp ...
JSP入门：介绍什么是JSP和Servlet（转）
转自:http://developer.51cto.com/art/200907/134506.htm JSP入门:什么是jsp? JSP(Java Server Pages)是由Sun Micros ...
JSP入门必读
JSP基础知识:转自老师上课梳理的笔记,希望对大家有所帮助.有什么不妥当的地方还望大家批评指正. 特别适用于JSP入门的人员使用.1.JSP [1] 简介1.1 HTML HTML擅长显示一个静 ...
九、JSP入门(1)
JSP入门 1 JSP概述 1.1 什么是JSP JSP(Java Server Pages)是JavaWeb服务器端的动态资源.它与html页面的作用是相同的,显示数据和获取数据. 1.2 JSP的 ...
day11（jsp入门&Cookie&HttpSession&一次性图片校验码）
day11 JSP入门 1 JSP概述 1.1 什么是JSP JSP(Java Server Pages)是JavaWeb服务器端的动态资源.它与html页面的作用是相同的,显示数据和获取数据. ...
JSP入门之自定义标签
第二部分简单讲解:主要讲解el表达式,核心标签库.本章主要讲解:自定义标签库:404页面,505页面,错误页面配置方法全部代码下载:链接 1.JSP自定义标签: 自定义标签是用户定义的JSP语言元素 ...
Jsp入门实战上
前面讲了servlet入门实践现在开始介绍jsp入门实践,开发环境的搭建请参考我前面的tomcat的文章,jsp入门教程分为上下两部分,第一部分简单讲解:jsp语法的规范,以及三大编译指令,七个动作指 ...
Cookie&&Session&&jsp入门
会话技术会话:一次会话中包含多次请求和响应. 一次会话:浏览器第一次给服务器资源发送请求,会话建立,直到有一方断开为止功能:在一次会话的范围内的多次请求间,共享数据方式: 客户端会话技术:Coo ...
JSP入门
JSP简介所谓JSP就是在网页文件中嵌入Java代码或JSP定义的一些标记.JSP是建立在Servlet上的,在执行时JSP容器会先将JSP文件转换成Servlet文件以及class 文件,然后再执 ...
jsp 入门 cookie session
Java Server Page ==> 服务器端的动态页面资源.用来做显示的功能. JSP构成 ==> HTML 脚本代码标签构成. JSP 原理 ==> 实际上就是 servl ...

随机推荐

SALT 加密
大家都知道,MD5加密是不可逆.但事实上,我们通常值的MD5算法.黑客的眼下破解率相对较高.也有非常多站点上干脆就提供批量解密MD5的服务,当然是收费的.http://www.xmd5.org.这里提 ...
mcstructs使用CMake生成Makefile文件
CMakeLists.txt project(MCSTRUCTS) set(SRC_LIST src/main.c src/mcslist.c src/mcsringbuf.c) add_execut ...
php学习之路：php在iconv功能详细解释
iconv函数库可以完毕各种字符集间的转换,是php编程中必不可少的基础函数库. 使用方法例如以下: $string = "亲爱的朋友欢迎訪问胡文芳的博客.希望给您带来一点点的帮助!&quo ...
ReSharper 8.1支持Visual Studio 2013的特色——超强滚动条
自ReSharper 8.1发布以来,便支持Visual Studio 2013.其中peek功能是它的亮点,滚动条则是它的特色. 接下来小编将展示ReSharper在Visual Studio 20 ...
leetcode[89] Merge Sorted Array
合并两个有序数组,放在A中,A中的空间足够. Given two sorted integer arrays A and B, merge B into A as one sorted array. ...
老调重弹--面向对象设计原则--GRASP设计原则
GRASP概述 GRASP,全称General Responsibility Assignment Software Patterns,译为”通用职责分配软件原则“,包含以下原则和模式控制器(Con ...
android gps开发必备资料(含测试demo下载)
入门资料参考: How accurate is Android GPS? Part 1: Understanding Location Data How accurate is Android GPS ...
ThoughtWorks Merchant's Guide To The Galaxy
ThoughtWorks笔试题之Merchant's Guide To The Galaxy解析一.背景在某网站上看到ThoughtWorks在武汉招人,待遇在本地还算不错,就投递了简历.第二天H ...
Ibatis 返回datatable数据类型案例
/// <summary> /// 查询实体 [DataSet数据集] /// </summary> /// <param name="statementNam ...
什么是PHP
PHP(PHP: Hypertext Preprocessor的缩写,中文名:“超文本预处理器”)是一种通用开源脚本语言.语法吸收了C语言.Java和Perl的特点,入门门槛较低,易于学习,使用广泛, ...

1.JSP入门

1.JSP入门的更多相关文章

随机推荐

热门专题