网上的 Jquery ajax Demo 大多都是基于php
很少 有java的 今天就把自己的Demo贴出来 和大家共同学习
先用html写个例子：myajax.html
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<title>ajax_load.html</title>
</head>
<body>
<h2 style="color:#FF0000">我是李云，Jquery很好用！</h2>
</body>
</html>
执行ajax的页面：useAjax.html
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script type="text/javascript" src="jquery-142min.js" ></script>
</head>
<script language="javascript">
$(function(){
$.ajax({
url:"myajax.html",
async:false,
success:function(data)
{
//alert(data);
$("p").html(data);
}
});
});
</script>
<body>
<p></p>
</body>
</html>
$.get()方法实现
<script type="text/javascript">
$(function(){
$.get("myajax.html",function(data){
$("p").html(data);
});
});
</script>
$.post()方法实现
<script type="text/javascript">
$(function(){
$.post("myajax.html",function(data){
$("p").html(data);
});
});
</script>
现在就 Jquery ajax 的 $.ajax(),$.post(),$.get();
首先是 服务端的Servlet 演示这三个函数的用法对都是用的同一个 服务端
Java代码
package com.june.servlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
public class jqueryAjaxServer extends HttpServlet {
public jqueryAjaxServer(){
super();
}
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws IOException ,ServletException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out=response.getWriter();
String account=request.getParameter("account");
if("iamcrzay".equals(account)){
out.print("Sorry,the user is exist");
}
else{
out.print("Congratulation,this accont you can use!!!!");
}
out.close();
}
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws IOException ,ServletException {
this.doGet(request, response);
}
}
package com.june.servlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
public class jqueryAjaxServer extends HttpServlet {
public jqueryAjaxServer(){
super();
}
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws IOException ,ServletException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out=response.getWriter();
String account=request.getParameter("account");
if("iamcrzay".equals(account)){
out.print("Sorry,the user is exist");
}
else{
out.print("Congratulation,this accont you can use!!!!");
}
out.close();
}
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws IOException ,ServletException {
this.doGet(request, response);
}
}
下面是WEB.XML
Xml代码
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>jqueryAjaxServer</servlet-name>
<servlet-class>com.june.servlet.jqueryAjaxServer</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>jqueryAjaxServer</servlet-name>
<url-pattern>/jqueryAjax</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>jqueryAjaxServer</servlet-name>
<servlet-class>com.june.servlet.jqueryAjaxServer</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>jqueryAjaxServer</servlet-name>
<url-pattern>/jqueryAjax</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
下面是Jsp页面
第一个是 jqueryAjax.jsp 本页使用的是$.ajax()
Html代码
<%@ page language="java" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jquery ajax</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script src="js/jquery-1.2.6.js" type="text/javascript"></script>
<script language="javascript">
$(function(){
$('.sumbit').click(function(){
if($('#account').val().length==0){
$('.hint').text("用户名不能位空").css({"background-color":"green"});
}
else{
$.ajax({
url:'jqueryAjax',
data:{account:$('#account').val()},
error:function(){
alert("error occured!!!");
},
success:function(data){
$('body').append("<div>"+data+"</div>").css("color","red");
}
});}
});
});
</script>
</head>
<body>
<h3 align="center">jquery AjaX</h3>
<hr>
<label>请输入用户名 ：</label>
<input id="account" name="account" type="text">
<input class="sumbit" type="button" value="检测">
<div class="hint">
</div>
</body>
</html>
<%@ page language="java" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jquery ajax</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script src="js/jquery-1.2.6.js" type="text/javascript"></script>
<script language="javascript">
$(function(){
$('.sumbit').click(function(){
if($('#account').val().length==0){
$('.hint').text("用户名不能位空").css({"background-color":"green"});
}
else{
$.ajax({
url:'jqueryAjax',
data:{account:$('#account').val()},
error:function(){
alert("error occured!!!");
},
success:function(data){
$('body').append("<div>"+data+"</div>").css("color","red");
}
});}
});
});
</script>
</head>
<body>
<h3 align="center">jquery AjaX</h3>
<hr>
<label>请输入用户名 ：</label>
<input id="account" name="account" type="text">
<input class="sumbit" type="button" value="检测">
<div class="hint">
</div>
</body>
</html>
第二个用的是 $.post()
Html代码
<%@ page language="java" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jquery ajax</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script src="js/jquery-1.2.6.js" type="text/javascript"></script>
<script language="javascript">
$(function(){
$('.sumbit').click(
function(){
if($('#account').val().length==0){
$('.hint').text("The account is cant't be null").css({"color":"red","background-color":"yellow"});
}
else{
$.post("jqueryAjax","account="+$('#account').val(),function(data){
$('.hint').text(data).css({"color":"red","background-color":"yellow"});
})
}
});
});
</script>
</head>
<body>
<h3 align="center">jquery Ajax</h3>
<hr>
<label>请输入用户名 ：</label>
<input id="account" name="account" type="text">
<input class="sumbit" type="button" value="检测">
<div class="hint">
</div>
</body>
</html>
<%@ page language="java" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jquery ajax</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script src="js/jquery-1.2.6.js" type="text/javascript"></script>
<script language="javascript">
$(function(){
$('.sumbit').click(
function(){
if($('#account').val().length==0){
$('.hint').text("The account is cant't be null").css({"color":"red","background-color":"yellow"});
}
else{
$.post("jqueryAjax","account="+$('#account').val(),function(data){
$('.hint').text(data).css({"color":"red","background-color":"yellow"});
})
}
});
});
</script>
</head>
<body>
<h3 align="center">jquery Ajax</h3>
<hr>
<label>请输入用户名 ：</label>
<input id="account" name="account" type="text">
<input class="sumbit" type="button" value="检测">
<div class="hint">
</div>
</body>
</html>
第三个是用的$.get()
Html代码
<%@ page pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jquery get</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script src="js/jquery-1.2.6.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
$('.sumbit').click(function(){
if($('#account').val().length==0){
$('.hint').html("用户名不能位空！！！").css({"color":"#ffoo11","background":"blue"});
}
else{
$.get("jqueryAjax","account="+$('#account').val(),
function(data){
$('.hint').html(data).css({"color":"#ffoo11","background":"green"});
});
}
});
});
</script>
</head>
<body>
<h3 align="center">jquery AjaX</h3>
<hr>
<label>请输入用户名 ：</label>
<input id="account" name="account" type="text">
<input class="sumbit" type="button" value="检测">
<div class="hint">
</div>
</body>
</html>
$(
function(){
// Get a reference to the content div (into which we will load content).
var jContent = $( "#content" );
// Hook up link click events to load content.
$( "a" ).click(
function( objEvent ){
var jLink = $( this );
// Clear status list.
$( "#ajax-status" ).empty();
// Launch AJAX request.
$.ajax(
{
// The link we are accessing.
url: jLink.attr( "href" ),
// The type of request.
type: "get",
// The type of data that is getting returned.
dataType: "html",
error: function(){
ShowStatus( "AJAX - error()" );
// Load the content in to the page.
jContent.html( "<p>Page Not Found!!</p>" );
},
beforeSend: function(){
ShowStatus( "AJAX - beforeSend()" );
},
complete: function(){
ShowStatus( "AJAX - complete()" );
},
success: function( strData ){
ShowStatus( "AJAX - success()" );
// Load the content in to the page.
jContent.html( strData );
}
}
);
// Prevent default click.
return( false );
}
);
}
);