将表单单选值发送到 Java servlet，returns null

Question

当我想将单选值从 HTML 页面上的表单发送到 Java Servlet 时，这似乎总是空值，而不是“1”或“2” " 或...

这是我的 HTML 代码：

<form method="post" action="/testWeb/animalsurvey" target="_blank">

<p>What is your favorite pet?</p>

<p><input type="radio" name="animal" value="1" />Dog<br />
<input type="radio" name="animal" value="2" />Cat<br />
<input type="radio" name="animal" value="3" />Bird<br />
<input type="radio" name="animal" value="4" />Snake<br />
<input type="radio" name="animal" value="5" checked="checked" />None</p>

<p><input type="submit" value="Submit" /></p>

这是 Java Servlet 代码：

protected void doPost(HttpServletRequest request,
                      HttpServletResponse response) throws ServletException, IOException {

    PrintWriter out = response.getWriter();

    String value = request.getParameter("name");

    out.println(value);

}

Web.xml 代码，显示 servlet 映射：

<servlet>
    <servlet-name>animalsurvey</servlet-name>
    <description>A survey servlet.</description>
    <servlet-class>be.SurveyServlet</servlet-class>
</servlet>


<servlet-mapping>
    <servlet-name>animalsurvey</servlet-name>
    <url-pattern>/animalsurvey</url-pattern>
</servlet-mapping>

不知道是不是我眼瞎了，我哪里做错了？

Answer 1

好像是参数名：

请尝试：

 String value = request.getParameter("animal");

将表单单选值发送到 Java servlet，returns null

Sending form radio values to Java servlet, returns null

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