由于项目里面需要用到Java调用php的充值接口，所以学习了一下，以下这个Demo是个小小的例子，写下来做个笔记>
jsp页面：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8" contentType="text/html; charset=GBK"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <base href="<%=basePath%>" /> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <meta http-equiv="x-ua-compatible" content="ie=7" /> <title>Lost Crown</title> <link rel="icon" href="favicon.ico" /> <link rel="shortcut icon" href="favicon.ico" /> <script type="text/javascript"> function getXmlHttp(){ var http_request = false; if (window.XMLHttpRequest){ http_request = new XMLHttpRequest(); if (http_request.overrideMimeType){ http_request.overrideMimeType(‘text/xml‘); } }else if (window.ActiveXObject){ try{ http_request = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e){ try{ http_request = new ActiveXObject("Microsoft.XMLHTTP"); }catch (e) { } } } if (!http_request){ alert("不能创建对象！"); return false; } return http_request; } function result(){ if(req.readyState == 4 && req.status == 200){ var names = req.responseText; alert("Hello:"+names); } } function checkTest(){ var name = document.getElementById("name").value; var ul = "http://localhost:8011/TestAjax/index.php?name=" + name; req = getXmlHttp(); req.onreadystatechange = result; req.open("POST",ul,true); req.setRequestHeader(‘If-Modified-Since‘, ‘0‘); req.send(null); } </script> </head> <body> <center> <table width="300" border=1> <tr align="center"> <td colspan="2"> It‘s A Ajax Test </td> </tr> <tr align="center"> <td> 用户名 </td> <td> <input type="text" name="name" id="name" value="Jerry"/> </td> </tr> <tr align="center"> <td colspan="2"> <input type="button" name="submit" id="submit" value="提交" onclick="checkTest();"/> </td> </tr> </table> </center> </body> </html>
php页面：
<?php $username = $_REQUEST[‘name‘]; echo($username); ?>