前端jsp頁面代碼：

請選擇版本:
<br/>
<div>
推送版本：<input type="button" id="post1" class = "ver" value="推送"/><br/>
響應版本：<input type="button" id="post2" class = "ver" value="響應"/><br/>
當前版本查看：<button id="post3" value="vercheck">查看</button>
</div>
<br/>
<br/>
<div id = "result"></div>
<script src="<%=path%>/js/jquery.min.js"></script>
<script src="<%=path%>/js/verselect.js"></script>

js控制代碼：

$(function(){
$(‘#post1‘).click(function(){
//alert(1);
$(‘#result‘).innerHTML="";
var vers = "0";
$.ajax({
dataType: "html",
type: ‘POST‘,
url: g.basePath+‘/verSelect.do‘,
data: {
vers
},
success: function(data){
$(‘#result‘).html(data)
}
});
})
$(‘#post2‘).click(function(){
//alert(2);
$(‘#result‘).innerHTML="";
var vers = "1";
$.ajax({
dataType: "html",
type: ‘POST‘,
url: g.basePath+‘/verSelect.do‘,
data: {
vers
},
success: function(data){
$(‘#result‘).html(data)
}
});
})
$(‘#post3‘).click(function(){
//alert(3);
$(‘#result‘).innerHTML="";
var ver = $(‘#post3‘).val();
$.ajax({
dataType: "html",
type: ‘POST‘,
url: g.basePath+‘/verSelect.do‘,
data: {
ver
},
success: function(data){
$(‘#result‘).html(data)
}
});
})
})

後臺請求處理，此處使用post提交請求

import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class VerSelectServlet extends HttpServlet {

public static version = false；

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}

@Override
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String vers = request.getParameter("vers");
if ("1".equals(vers)) {
response.getWriter().print("已切換到當前版本");

version = ture；
}
if ("0".equals(vers)) {
response.getWriter().write("已切換到當前版本");

version = false；

}
String ver = request.getParameter("ver");
if ("vercheck".equals(ver)) {
if (!version) {
response.getWriter().write("當前為0版本");
}
if (version) {
response.getWriter().write("當前為1版本");
}
}
}
}

關於用$.Ajax()控制按鈕的選擇與查看