form表单处理

作者: _String_ | 来源:发表于2017-10-11 16:32 被阅读0次

    表单数据处理通过request.getParameter()获取指定字段内容,通过request.getParameterValues()方式获取前端多个值以数组形式存储。
    表单代码如下:

    <!DOCTYPE html>
    <html>
      <head>
        <title>用户注册</title>
        
        <meta name="keywords" content="keyword1,keyword2,keyword3">
        <meta name="description" content="this is my page">
        <meta name="content-type" content="text/html; charset=UTF-8">
        
        <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
    
      </head>
      
      <body>
        <form name="user" id="f1" action="servlet/userRegedit" method="post">
          <table>
            <tr>
              <td>user name:</td>
              <td><input type="text" name="username" id="login"></td>
            </tr>
            <tr>
              <td>Password:</td>
              <td><input type="password" name="password" id="password"></td>
            </tr> 
            <tr>
                <td>
                    <input type="radio" name="sex" value="1">男
                    <input type="radio" name="sex" value="2">女
                </td>
            </tr>
            <tr>
                <td>
                    <input type="checkbox" name="ah" value="1">运动
                    <input type="checkbox" name="ah" value="2">玩
                </td>
            </tr>
             <tr>
                <td>
                    <select name="zw">
                        <option value="java">java</option>
                        <option value="php">php</option>
                        <option value="python">python</option>
                    </select>
                </td>
            </tr>
             <tr>
                <td>
                    <textarea rows="20" cols="30" name="bz"></textarea>
                </td>
            </tr>
            <tr>
              <td colspan="2"><input type="submit"></td>
            </tr>
          </table>
        </form>
      </body>
    </html>
    

    servlet代码如下:

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
            //获取用户输入表单
            String name = request.getParameter("username");
            String password = request.getParameter("password");
            String sex = request.getParameter("sex");
            String[] hobby = request.getParameterValues("ah");
            String gw = request.getParameter("zw");
            String memo = request.getParameter("bz");
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
            out.println("<HTML>");
            out.println("  <HEAD><TITLE>A Servlet Form</TITLE></HEAD>");
            out.println("  <BODY>");
            out.print("    This is ");
            out.println(name);
            out.println(password);
            out.println(sex);
            for(String x:hobby){
                out.println(x);
            }
            out.println(gw);
            out.println(memo);
            out.print(this.getClass());
            out.println(", using the GET method");
            out.println("  </BODY>");
            out.println("</HTML>");
            out.flush();
            out.close();
        }
    

    可以将前台输入所有内容读入并进行处理。

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        本文标题:form表单处理

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