@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
String name = req.getParameter("name");
String pwd = req.getParameter("pwd");
PrintWriter writer = null;
try{
resp.setContentType("text/html");
writer = resp.getWriter();
writer.print("{name:‘"+name+"‘,pwd:‘"+ pwd +"‘}");
}finally{
if(writer != null){
writer.close();
}
}
}
<script type="text/javascript">
function showname(){
$.get("test",{name:$("#name").val(),pwd:$("#pwd").val()},function(data){
var obj = eval(‘(‘+ data+‘)‘);
alert(obj.name);
});
}
</script>
<body>
name: <input id="name" type="text" name="name"/>
passWord:<input id="pwd" type="text" name="pwd"/>
<input type="button" id="stn" value="确定" onclick="showname()">
</body>
以上writer.print中如果参数name和pwd左右不加单引号，js中就不能把字符串解析成json对象取name的值，至于为什么，应该是因为{name:name,pwd:pwd}这样子的字符串，json不认识第二个name是什么吧，如果是数字则可以。
原文：http://my.oschina.net/u/1582930/blog/402251