ajax验证用户名是否重复

package com.chinasoft.ajax.servlet; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.PrintWriter; public class IndexServlet implements Servlet { @Override public void init(ServletConfig servletConfig) throws ServletException { } @Override public ServletConfig getServletConfig() { return null; } @Override public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException { HttpServletRequest request=(HttpServletRequest)servletRequest; HttpServletResponse response=(HttpServletResponse)servletResponse; PrintWriter out = response.getWriter(); request.setCharacterEncoding("utf-8"); String p=request.getParameter("phone"); String result="0";//默认没有注册的手机号状态 String phones[]={"13888888888","13999999999"}; for(int i=0;i<phones.length;i++){ if(phones[i].equals(p)){ result="1";//这个手机号已经注册过了 break; } } out.println(result); } @Override public String getServletInfo() { return null; } @Override public void destroy() { } }