myeclipse html将注册页面提交到servlet

最新推荐文章于 2023-01-15 19:12:36 发布

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本文介绍了一个使用Java实现的学生信息收集表单案例，包括表单设计、提交方式及处理中文乱码的方法。通过POST和GET两种提交方式演示了如何避免乱码问题，并提供了完整的JSP和Servlet代码。

1、运用java语言，页面编码格式：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

2、form表单，但你提交后，会跳转到servlet/Studentservlet，采用的方式是post，还有另一种方式，是get，一般用post，如果不写则默认为get:

 <form action="servlet/Studentservlet" method="post"> 
	  <h2>学生信息收集：</h2>
	    姓名：<input type="text" name="uname"><br /> <br />
	    身份证号：<input name="sfz" /><br /> <br />
	    职业：<input type="text" name="uwork"><br /> <br />
	    性别：
	    <input type="radio" name="gender" value="男" />男
	    <input type="radio" name="gender" value="女" />女
	    <br /> <br />
	  国籍：
	    <select name="nana">
	    	<option value="中国">中国</option>
	    	<option value="委内瑞拉">委内瑞拉</option>
	    	<option value="美国">美国</option>
	    	<option value="朝鲜">朝鲜</option>
	    </select>
	    <br /> <br />
	    所在地：
	    <select name="szd">
	    	<option value="重庆">重庆</option>
	    	<option value="上海">上海</option>
	    	<option value="北京">北京</option>
	    	<option value="成都">成都</option>
	    	<option value="广州">广州</option>
	    	<option value="厦门">厦门</option>
	    	<option value="福建">福建</option>
	    	<option value="澳门">澳门</option>
	    </select>
	    <br /><br />
	    文凭：
	    <select name="wp">
	    	<option value="小学">小学</option>
	    	<option value="初中">初中</option>
	    	<option value="高中">高中</option>
	    	<option value="大学">大学</option>
	    	<option value="博士">博士</option>
	    	<option value="硕士">硕士</option>
	    </select>
	    <br /><br />
	    联系方式：<input name="phone" /><br /> <br />
	     <br />
	      <br />
	    <input type="submit" value="提交信息" />
    </form>

3、用dopost函数模块时在网页显示出现中文乱码的处理方式:

response.setCharacterEncoding("utf-8");

4、用doget函数模块时在网页显示出现中文乱码的处理方式:

String name = request.getParameter("uname");
name = new String(name.getBytes("iso-8859-1"), "utf-8");

5、完整代码

（1）.jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
  </head>
  
  <body>
     <form action="servlet/Studentservlet" method="post"> 
	  <h2>学生信息收集：</h2>
	    姓名：<input type="text" name="uname"><br /> <br />
	    身份证号：<input name="sfz" /><br /> <br />
	    职业：<input type="text" name="uwork"><br /> <br />
	    性别：
	    <input type="radio" name="gender" value="男" />男
	    <input type="radio" name="gender" value="女" />女
	    <br /> <br />
	  国籍：
	    <select name="nana">
	    	<option value="中国">中国</option>
	    	<option value="委内瑞拉">委内瑞拉</option>
	    	<option value="美国">美国</option>
	    	<option value="朝鲜">朝鲜</option>
	    </select>
	    <br /> <br />
	    所在地：
	    <select name="szd">
	    	<option value="重庆">重庆</option>
	    	<option value="上海">上海</option>
	    	<option value="北京">北京</option>
	    	<option value="成都">成都</option>
	    	<option value="广州">广州</option>
	    	<option value="厦门">厦门</option>
	    	<option value="福建">福建</option>
	    	<option value="澳门">澳门</option>
	    </select>
	    <br /><br />
	    文凭：
	    <select name="wp">
	    	<option value="小学">小学</option>
	    	<option value="初中">初中</option>
	    	<option value="高中">高中</option>
	    	<option value="大学">大学</option>
	    	<option value="博士">博士</option>
	    	<option value="硕士">硕士</option>
	    </select>
	    <br /><br />
	    联系方式：<input name="phone" /><br /> <br />
	     <br />
	      <br />
	    <input type="submit" value="提交信息" />
    </form>
  </body>
</html>

（2）.java文件：

package login;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Studentservlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public Studentservlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		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</TITLE></HEAD>");
		out.println("  <BODY>");
		//处理post提交中文乱码
		request.setCharacterEncoding("utf-8");
		//获取信息
		String name = request.getParameter("uname");
		name = new String(name.getBytes("iso-8859-1"), "utf-8");
		String sfz = request.getParameter("sfz");
		String work = request.getParameter("uwork");
		work = new String(work.getBytes("iso-8859-1"), "utf-8");
		String gender = new String(request.getParameter("gender").getBytes("iso-8859-1"),"utf-8");
		String nana = new String(request.getParameter("nana").getBytes("iso-8859-1"),"utf-8");
		String szd = new String(request.getParameter("szd").getBytes("iso-8859-1"),"utf-8");
		String wp = new String(request.getParameter("wp").getBytes("iso-8859-1"),"utf-8");
		String phone = request.getParameter("phone");
		out.println(name + "<br />");
		out.println(sfz + "<br />");
		out.println(work + "<br />");
		out.println(gender + "<br />");
		out.println(nana + "<br />");
		out.println(szd + "<br />");
		out.println(wp + "<br />");
		out.println(phone + "<br />");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}
			public void doPost(HttpServletRequest request, HttpServletResponse response)
					throws ServletException, IOException {
				response.setContentType("text/html");
				//处理post提交中文乱码
				request.setCharacterEncoding("utf-8");
				response.setCharacterEncoding("utf-8");
				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</TITLE></HEAD>");
				out.println("  <BODY>");
				//获取信息
				String name = request.getParameter("uname");
				String sfz = request.getParameter("sfz");
				String work = request.getParameter("uwork");
				String gender = request.getParameter("gender");
				String nana = request.getParameter("nana");
				String szd = request.getParameter("szd");
				String wp = request.getParameter("wp");
				String phone = request.getParameter("phone");
				out.println(name + "<br />");
				out.println(sfz + "<br />");
				out.println(work + "<br />");
				out.println(gender + "<br />");
				out.println(nana + "<br />");
				out.println(szd + "<br />");
				out.println(wp + "<br />");
				out.println(phone + "<br />");
				out.println("  </BODY>");
				out.println("</HTML>");
				out.flush();
				out.close();
			}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}