Question

jsp页面传值有哪些方式

Answer 1

几种JSP页面传值方式：

1. 隐藏域传值：
<form method="post" action="client_crud.jsp" >
<input type="hidden" name="id" value="<%=id %>">

2. URL传值：
用button
a.
<input name="btnModify" type="button" class="button1" onClick="self.location='client_modify.jsp?id=<%=id %>'"
value="修改分销商" />
b.把input的onClick=”modifyRegion()”
function modifyRegion() {
window.self.location = client_node_modify.jsp?id=<%=id%>";

}
3. JS方式传值
//取得form对象提交表单
with(document.getElementById("userForm")) {
method="post";
action="user_add.jsp?command=add";
submit();
}

function searchItem() {
with(document.forms[0]) {
action="servlet/basedata/SearchItemServlet";
method="post";
submit();
}
}

JSP的几种参数传值：

一、超链接
<a href="P.jsp?username=zhangshan&pwd=123456&age=25"> 链接</a>

二、forma表单
1.可显示的控件
<input type="text" name="username">

2.如果要传递的值,不需要显示在页面上
(1)<input type="hidden" name="pwd" value="<%=pwd%>">
(2)<form action="XXX.jsp" method="post"></form>

三、JSP的include和forward标签
<jsp:include flush="true" page="T.jsp?username=zhangshan&pwd=123456678">
<jsp:param name="age" value="28"/>
</jsp:include>

四、JavaScript方式
script type="text/javascript">
function demo(){
var v = document.all('username').value;
location.replace("V.jsp?username="+v+"&age=25");
}
</script>
<input type="text" name="username"><br>
<input type="button" value="href点击" onclick="location.href='V.jsp?pwd=123456'"><BR>
<input type="button" value="replace点击"
onclick="location.replac('V.jsp?pwd=123456789')">
<br>

<input type="button" value="动态取值" onclick="demo()">