鍦↗SP椤甸潰涓細
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
聽
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
聽 <head>
聽 <meta http-equiv="content-type" content="text/html; charset=gbk">
聽聽聽 <title>璇锋敞鍐?lt;/title>
聽<link rel="stylesheet" type="text/css" href="style/style.css" target="_blank" rel="external nofollow" >
聽 <script type="text/javascript">
聽聽 var xhr=null;
聽聽聽
聽聽聽
聽 function checkUname(){
聽 var username=document.myform.uname.value;
聽 //alert(username);
聽 if(username==""||username==null){
聽聽聽 document.getElementById("msgDiv").innerHTML="<font color='red'>璇疯緭鍏ョ敤鎴峰悕</font>";
聽 }
聽 //ajax鐨勬牳蹇冨璞? 聽 //var xhr=new XMLHttpRequest();//鍙闈瀒e娴忚鍣ㄧ敓鏁? 聽聽
聽
聽 if(window.ActiveXObject){
聽聽
聽聽聽 xhr=new ActiveXObject("Microsoft.XMLHTTP");
聽 }else{
聽聽聽聽 xhr=new XMLHttpRequest();
聽 }
聽 var url="http://localhost:8080/12softsms0415/RegServlet?uname="+username;
聽聽 //褰撴牳蹇冨璞＄殑鐘舵€佸彂鐢熸敼鍙橈紝瀹冪殑澶勭悊鍑芥暟
聽 xhr.onreadystatechange=haolejiaowo;
聽 xhr.open("get",url,true);
聽 xhr.send(null);
聽聽
聽聽
聽 }
聽聽
聽 //鎵嶆槸鏍稿績澶勭悊鍑芥暟
聽 function haolejiaowo(){
聽if(xhr.readyState==4&&xhr.status==200){
聽聽 var result=xhr.responseText;//寰楀埌杩滅▼鏈嶅姟鍣ㄨ繑鍥炵殑缁撴灉
聽聽 if(result.indexOf("true")!=-1){
聽聽聽聽 document.getElementById("msgDiv").innerHTML="<font color='red'>鐢ㄦ埛鍚嶅凡瀛樺湪</font>";;
聽聽 }else{
聽聽聽聽 document.getElementById("msgDiv").innerHTML="鍙互娉ㄥ唽";
聽聽 }
聽
聽
聽}
聽聽
聽聽
聽 }
聽 </script>
聽聽
聽 </head>
聽 <body>
聽 <div align="center">
聽 聽<%--聽 鐧诲綍聽 --%>
聽聽
聽聽聽 <div class="login" align="center">
聽聽聽 聽<br/>
聽聽聽聽聽聽聽 <h2>璐﹀彿娉ㄥ唽</h2>
聽聽聽 聽<form action="UserServlet" method="post" name="myform">
聽聽聽 聽聽聽<input type="hidden" name="cmd" value="reg">
聽聽聽 聽聽鐢ㄦ埛鍚?lt;input type="text" name="uname" class="input" 慰nblur="checkUname()"/>
聽聽聽 聽聽<div id="msgDiv" style="display:inline"></div>
聽聽聽 聽聽<br/>
聽聽聽 聽聽瀵?amp;nbsp; 鐮?lt;input type="password" name="upass" class="input"/><br/>
聽聽聽 聽聽閲嶅瀵嗙爜<input type="password" name="upassrep" class="input"/><br/>
聽聽聽 聽聽<input type="submit" value=" 娉ㄥ唽 " class="btn"/>
聽聽聽 聽</form>
聽聽聽 </div>
聽聽聽
聽聽
聽 </div>
聽 </body>
</html>
鍦╯rc鐩綍涓嬫柊寤轰竴涓猂egServlet椤甸潰鏉ュ垽鏂敤鎴峰悕鏄惁鏈夋敞鍐岋細
package com.neusoft.sms.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class RegServlet extends HttpServlet {
聽
聽public boolean isExist(String username){
聽聽聽 //妯℃嫙鍚庡彴鏁版嵁搴撴湁涓変釜鐢ㄦ埛
聽聽String[] names={"jack","marry","ljh"};
聽聽for (String s : names) {
聽聽聽if(username.equalsIgnoreCase(s)){
聽聽聽聽return true;
聽聽聽}
聽聽}
聽聽return false;
聽}
聽
聽public void doGet(HttpServletRequest request, HttpServletResponse response)
聽聽聽throws ServletException, IOException {
聽聽聽聽 try {
聽聽聽Thread.sleep(3000);
聽聽} catch (InterruptedException e) {
聽聽聽// TODO Auto-generated catch block
聽聽聽e.printStackTrace();
聽聽}
聽聽
聽聽response.setContentType("text/html;charset=gbk");
聽聽PrintWriter out = response.getWriter();
聽聽
聽聽String username=request.getParameter("uname");
聽聽boolean flag=isExist(username);
聽聽out.println(flag);
聽聽
聽聽out.flush();
聽聽out.close();
聽}
聽public void doPost(HttpServletRequest request, HttpServletResponse response)
聽聽聽throws ServletException, IOException {
聽聽聽聽聽聽聽聽聽聽聽聽 doGet(request,response);
聽}}
![为JSON 数据加入斜杠 \[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)