如何将值从Jquery传递到jsp？
我的 jQuery 代码：
function check_availability(){
//get the username
alert("hai");
var result ="";
var CompanyCode = $('#CompanyCode').val();
alert("Jquery " +CompanyCode);
//use ajax to run the check
$.post("checkUserName.jsp", { CompanyCode: CompanyCode },
function(result){
//if the result is 1
alert("result"+result);
if(result == 1){
//show that the username is available
$('#username_availability_result').html(CompanyCode + ' is Available');
}else{
//show that the username is NOT available
$('#username_availability_result').html(CompanyCode + ' is not Available');
}
});
}
checkUserName.jsp：
String companyCode = request.getParameter("CompanyCode");
out.println("companyCode"+companyCode);
rs = dbAccess.executeQuery("select companycode from yosemitecompany where companycode = '"+companyCode+"'");
如何从 jQuery 获取值？我需要在JSP页面中获取答案来检查该记录是否存在于表中。我没有从 request.getParamater() 方法 获取值。还有其他方法可以检查吗？
My jQuery code:
function check_availability(){
//get the username
alert("hai");
var result ="";
var CompanyCode = $('#CompanyCode').val();
alert("Jquery " +CompanyCode);
//use ajax to run the check
$.post("checkUserName.jsp", { CompanyCode: CompanyCode },
function(result){
//if the result is 1
alert("result"+result);
if(result == 1){
//show that the username is available
$('#username_availability_result').html(CompanyCode + ' is Available');
}else{
//show that the username is NOT available
$('#username_availability_result').html(CompanyCode + ' is not Available');
}
});
}
checkUserName.jsp:
String companyCode = request.getParameter("CompanyCode");
out.println("companyCode"+companyCode);
rs = dbAccess.executeQuery("select companycode from yosemitecompany where companycode = '"+companyCode+"'");
How to get the values from jQuery? I need to get the answer in the JSP page for checking ,whether the record is present or not in the table. I am not getting the value from the request.getParamater() method. Is this any other way to check that ?
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评论（3）
而不是
尝试
也许这是一个将键命名为与该变量相同的问题......
Instead of
Try
Perhaps it's an issue with naming the keys the same as that var...
您的代码绝对有效。只有上面所说的变量命名可能是问题。
您可以尝试 jquery api 中的其他选项
$.post("checkUserName.jsp", $('#CompanyCode').serialize(),..
这应该可以解决您的问题。因为查询字符串值应该被引用（ ''）这个序列化方法可以正确地解决这个问题。
Your code is absolutely valid. Only thing as said above the variable naming may the issue.
You can try the other option from jquery api,
$.post("checkUserName.jsp", $('#CompanyCode').serialize(),..
This should take care of your issue. Because query string values should be quoted ('') properly. This serialize method would take care of that.
看来CompanyCode就是id属性。所以只需创建一个属性name="something"
然后使用 request.getParameter("something")。我希望它能起作用
It seems that CompanyCode is the id attribute.So just create an attribute name="something"
then use request.getParameter("something").I hope it will work