html部分
<!DOCTYPE html>
<html>
<head>
<title>new.html</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">
<meta name="description" content="this is my page">
<meta name="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<form action="/day023/servlet/RequestDemo1" method="post">
用户名：<input type="text" name="username"><br /> 密 码：<input
type="password" name="password"><br /> 性别：<input
type="radio" name="gender" value= "male">男 <input type="radio"
name="gender" value= "famale" >女 所在地： <select name="city">
<option vaule="bj">北京</option>
<option vaule="sh">上海</option>
<option vaule="cs">太原</option>
</select> <br />
爱好： <input type="checkbox" name="likes" value="sing">双截棍
<input type="checkbox" name="likes" value="dance">篮球 <input
type="checkbox" name="likes" value="basketball">it <input
type="checkbox" name="likes" vaule="football">java <br />
简介：
<textarea rows="6" cols="60" name="description"></textarea>
<br />
照片： <input type="file" name="image"><br /> <input
type="hadden" name="id" value="123456"> <input type="submit"
value="提交">
<form action="/day023/servlet/RequestDemo1" method="post">
用户名：<input type="text" name="username"><br /> 密 码：<input
type="password" name="password"><br /> 性别：<input
type="radio" name="gender" value= "male">男 <input type="radio"
name="gender" value= "famale" >女 所在地： <select name="city">
<option vaule="bj">北京</option>
<option vaule="sh">上海</option>
<option vaule="cs">太原</option>
</select> <br />
爱好： <input type="checkbox" name="likes" value="sing">双截棍
<input type="checkbox" name="likes" value="dance">篮球 <input
type="checkbox" name="likes" value="basketball">it <input
type="checkbox" name="likes" vaule="football">java <br />
简介：
<textarea rows="6" cols="60" name="description"></textarea>
<br />
照片： <input type="file" name="image"><br /> <input
type="hadden" name="id" value="123456"> <input type="submit"
value="提交">
</form>
</body>
</html>
</html>
Servlet部分，与乱码问题
package hyl;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class RequestDemo1 extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//基本获取信息方法
//解决乱码
request.setCharacterEncoding("UTF-8");//只对post有效
System.out.println(request.getParameter("username"));
//如果使用get方法那么只能手动转码，超链接都是get请求
String username = request.getParameter("username");
username = new String(username.getBytes("iso8859-1"),"UTF-8");
//将乱码先找iso8859-1来兑换成数字然后再拿着数字兑换成utf-8的字符串
System.out.println(request.getParameter("password"));
System.out.println(request.getParameter("username"));
System.out.println(request.getParameter("city"));
String[] likes = request.getParameterValues("likes");
for(int i=0;i<likes.length;i++){
System.out.println(likes[i]);
}
System.out.println(request.getParameter("description"));
System.out.println(request.getParameter("id"));
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
}