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doGet()方法来处理浏览器直接访问和get方式提交的表单

2016-03-18 17:03 423 查看
新建UserForm.jsp:

<%@ page language="java" contentType="text/html; charset=gb2312"
pageEncoding="gb2312"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<%-- 表单,提交方式为get,提交到doGet--%>>
<form action="doGetDemo" method="get">
用户名:<input type="text" name="username"/><br>
密码:<input type="password" name="password"/><br>
<input type="submit" value="提交"/>
<input type="reset" value="重置"/>
</form>
</body>
</html>


新建doGetDemo类:

package web_project;
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 doGetDemo extends HttpServlet{

//doGet方法
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException{
//
response.setContentType("text/html;charset=gb2312");
PrintWriter outp=response.getWriter();
//
request.setCharacterEncoding("gb2312");
//
String username= request.getParameter("username");
//
String password=request.getParameter("password");

outp.println("<html>");
outp.println("<body>");
outp.println("用户名:"+username+"<br>");
outp.println("密码"+password);
outp.println("</body>");
outp.println("</html>");
}
}
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