如何在 JSP 的按钮单击事件上调用 Java 方法
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时间：2020-08-13 08:37:09 来源:igfitidea点击:
How do I call a Java method on button click event of JSP
提问by cdLegend
<p>
<form action="logout.java" method="post">
<input type="button" value="Logout">
</form>
</p>
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.sendRedirect("login.jsp");
}
but when i click the button nothing happens?
但是当我点击按钮时没有任何反应？
采纳答案by Happy
You have to use a submit input :
您必须使用提交输入：
<input type="submit" value="Logout">
Make sure the servlet which contains the doPost()method is mapped to logout.java. If not, you have to set the action in your form tag.
确保包含该doPost()方法的 servlet映射到logout.java. 如果没有，您必须在表单标签中设置操作。
回答by user2121527
Use this:
用这个：
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.getRequestDispatcher("/login.jsp").forward(request, response);
}
