request.getParameter(“xxx”)的参数的取值

曾经终败给现在 2023-10-06 09:04 47阅读 0赞

request.getParameter(“xxx”)的参数的取值的几种可能：

1.  Html中form表单中标签的name属性：

<form name="form" method="post" action="checkUser">  
    
    请输入用户姓名：<input type="text" name="username">  
    
    <input type="submit" name="Submit" value="提交">  
    
    </form>  
    
    request.getParameter(“username”);

1.  Html中form表单提交时的action的参数

<form name="form" method="post" action="checkUser？Flag=1&Id=2">  
    
    请输入用户姓名：<input type="text" name="username">  
    
    <input type="submit" name="Submit" value="提交">  
    
    </form>  
    
    request.getParameter(“username”);
    
    request.getParameter(“Flag”);
    
    request.getParameter(“Id”);

1.  Html中url的内容

<a href="SortServlet?flag=5&temp=2" οnclick="sort()"><img src="images/cbsj.jpg" /></a>
    
    request.getParameter(“flag”);
    
    request.getParameter(“temp”);

1.  Ajax中的data

<form name="fm" action="" method="post">
    
    <div style="margin-bottom:10px;">
    
    <input class="TxtUserNameCssClass" type="text" id="UserCode" value="" />
    
    </div>
    
    <div style="margin-top:20px;">
    
    <input class="TxtPasswordCssClass" type="Password" id="UserPwd" value="" />
    
    </div>
    
    </form>
    
    <div class=IbtnEnterCssClass id="IbtnEnter" οnclick="submitForm()">登录</div>
    
     
    
    function submitForm(){
        
    
    var UserCode = $("#UserCode").val();
    
    var UserPwd = $("#UserPwd").val();
    
    var mypwd = $.base64.btoa($.md5(UserPwd).toUpperCase());
    
    var checkUserParams = {
        
    
    usercode:UserCode,
    
    userpwd:mypwd
    
    };
    
    $.ajax({
        
    
    url : 'checkUser.asp?mathid='+Math.random(),
    
    type : 'post',
    
    data : checkUserParams,
    
    dataType:'json',//接受数据格式
    
    success : function(data) {
        
    
    },
    
    failure : function(data) {
        
    
    }
    
    });
    
    }
    
     
    
    request.getParameter("usercode");
    
    request.getParameter("userpwd");