Question

我的网页有多个纽州,每个纽特州都有名称和价值属性。在点击纽顿之后,该网页将转至另一页,该页在行动上以选定的纽顿名称和价值表示的形式归属。

我想将后面一页中附在卢尔的选定国名或国名。我如何能够做到这一点?

Answer 1

如果你给纽特一个名字,那么它就只能作为请求参数提供。

E.g.

<input type="submit" name="add" value="Add" />
<input type="submit" name="edit" value="Edit" />
<input type="submit" name="delete" value="Delete" />

页: 1

if (request.getParameter("add") != null) {
    // Add button was pressed.
} else if (request.getParameter("edit") != null) {
    // Edit button was pressed.
} else if (request.getParameter("delete") != null) {
    // Delete button was pressed.
} else {
    // Handle exceptional/alternative case yourself.
}

or in JSP

<c:choose>
    <c:when test="${not empty param.add}">
        Add button was pressed.
    </c:when>
    <c:when test="${not empty param.edit}">
        Edit button was pressed.
    </c:when>
    <c:when test="${not empty param.delete}">
        Delete button was pressed.
    </c:when>
    <c:otherwise>
        Handle exceptional/alternative case yourself.
    </c:otherwise>
</c:choose>

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