常用写法备忘

1.ajax写法

        $(function(){
            $("#openDB").click(function(){
                /*$.post("/DBLanguage/LanguageServlet",{"username":"123","password":"456"},function (data) {
                    alert(data);
                });*/

                $.ajax({
                    type:"post",
                    url:'${pageContext.request.contextPath}/LanguageServlet',
                    data:"username=123&password=456",
                    dataType:"text",
                    success:function(data){
                        alert(data);
                    }
                });
            });
        });

 2.jsp页面获取当前路径：${pageContext.request.contextPath}