AJAX相关事例

最新推荐文章于 2025-08-13 22:02:33 发布

jttccw

最新推荐文章于 2025-08-13 22:02:33 发布

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文章标签： ajax import xmlhttprequest string function input

本文链接：https://blog.youkuaiyun.com/jttccw/article/details/2157293

import java.io.IOException;

import java.io.PrintWriter;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import oracle.jdbc.OracleDriver;

publicclass remai extends HttpServlet {

public remai() {

super();

}

public Connection getConnection() throws SQLException{

Connection conn = null;

DriverManager.registerDriver(new OracleDriver());

String url = "jdbc:oracle:thin:@192.168.5.28:1521:w2046";

String user = "scott";

String password = "tiger";

conn = DriverManager.getConnection(url, user, password);

return conn;

}

public dede selectabc() throws SQLException{

dede dede = null;

PreparedStatement pstmt = getConnection().prepareStatement("select * from dede where bbb=(select max(bbb) from dede)");

ResultSet rs = pstmt.executeQuery();

rs.next();

dede = new dede(rs.getString(1),rs.getString(2));

return dede;

}

publicvoid doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/xml");

response.setHeader("Cache-Control","no-cache");

PrintWriter out = response.getWriter();

out.println("<aa>");

try {

dede wc = selectabc();

out.println("<name>"+wc.getAaa()+"</name>");

out.println("<zhi>"+wc.getBbb()+"</zhi>");

out.println("</aa>");

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

package web;

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;

publicclass zuce extends HttpServlet {

public zuce() {

super();

}

publicvoid doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/xml");

response.setHeader("Cache-Control","no-cache");

PrintWriter out = response.getWriter();

String name=null;

String password=null;

name=request.getParameter("name");

password=request.getParameter("password");

out.println("<aa>");

if(name.equals("abc")&&password.equals("abc")){

out.println("<bb>chenggong</bb>");

}else{

out.println("<bb>buchenggong</bb>"); }

out.println("</aa>");

}

publicvoid doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

doGet(request, response);

}

AJAX部分网页代码

var xmlHttp;

function check(){

var name=document.form.name.value;

var password=document.form.password.value;

if(name=="")

{

alert("cuo!meiyoumingzi");

return false;

}if(password=="")

{

alert("cuo!meiyoupassword");

return false;

}

createXMLHttpRequest(name,password);

}

function processResponse(){

if(xmlHttp.readyState==4){

if(xmlHttp.status==200){

var tt=xmlHttp.responseXML.getElementsByTagName("bb");

var he=tt[0].childNodes[0].nodeValue;

alert(he);

}else{

alert("?????????");

} } }

function createXMLHttpRequest(name,password){

if(window.ActiveXObject){

xmlHttp = new ActiveXObject("Microsoft.XmlHttp");

}else if(window.XmlHttpRequest){

xmlHttp = new XmlHttpRequest();

}

xmlHttp.onreadystatechange = processResponse;

alert(name);

alert(password);

xmlHttp.open("POST","zuce",true);

xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

xmlHttp.send("name="+name+"&password="+password);

}

</script></head><body>

<p>

</p>

</p><p>

</p></form></body>

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;

publicclass list extends HttpServlet {

public list() {

super();

}

publicvoid doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/xml");

response.setHeader("Cache-Control","no-cache");

PrintWriter out = response.getWriter();

String select=request.getParameter("select");

out.println("<aa>");

if(select.equals("IBM")){

out.println("<name>IBM 001</name>");

out.println("<name>IBM 002</name>");

out.println("<name>IBM 003</name>");

}if(select.equals("SONY")){

out.println("<name>SONY 001</name>");

out.println("<name>SONY 002</name>");

out.println("<name>SONY 003</name>");

}if(select.equals("LENOVO")){

out.println("<name>LENOVO 001</name>");

out.println("<name>LENOVO 002</name>");

out.println("<name>LENOVO 003</name>");

}

out.println("</aa>");

}