关于servlet单选框，复选框取值问题

最新推荐文章于 2022-01-03 21:19:28 发布

原创最新推荐文章于 2022-01-03 21:19:28 发布 · 4.3k 阅读

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#servlet #表单

本文介绍了一个简单的HTML表单创建方法及如何使用Java Servlet处理表单提交的数据，包括单选和多选框的值获取。

先建一个表单：information.jsp

<body>
<form action="${pageContext.request.contextPath }/ServletInfo" method="post">

<input type="radio" name="sex" value="men"/>men
<input type="radio" name="sex" value="women"/>women

<input type="checkbox" name="play" value="nba"/>nba
<input type="checkbox" name="play" value="backball"/>backball
<input type="checkbox" name="play" value="run"/>run
<input type="checkbox" name="play" value="游泳"/>游泳
<input type="submit" value="submit"/>
</form>
</body>

提交表单到servlet：

@WebServlet("/ServletInfo")
public class ServletInfo extends HttpServlet {
private static final long serialVersionUID = 1L;

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

//设置字符编码
response.setContentType("text/html;charset=utf-8");
request.setCharacterEncoding("utf-8");
String sex = request.getParameter("sex");
String[] play = request.getParameterValues("play");
PrintWriter out = response.getWriter();
out.println("<html><center><body align='center'>");
out.println("<table border='1'>");
out.println("<tr>");
out.println("<th>info</th>");
out.println("<th>interesting</th>");
out.println("</tr>");
out.println("<tr><td>sex</td>");
out.println("<td>"+sex);
out.println("</td></tr>");
out.println("<td>play</td>");
out.println("<td>");
if (play!=null && play.length>0) {

//遍历取值
for (int i = 0; i < play.length; i++) {
//System.out.println(play[i]);

//打印
out.println(play[i]);
}
}
out.println("</td>");
out.println("</table></center></body></html>");

out.close();
}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doGet(request, response);
}

}