get方法可以。post方法不可以
index。jsp代碼如下：
<%@ page language="java" import="java.util.*" contentType="text/html; charset=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>
? ? <h1>第一個servlet小例子</h1>
? ? <a href="servlet/HelloServlet">get請求servlet</a><br>
? ??
? ? ?<form action="servlet/HelloServlet" ?method="post">
? ? <input type="submit" value="post請求servlet"/>
??
? </body>
</html>
HelloServlet.java代碼如下：
package servlet;
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 HelloServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("處理get()請求。。。。");
PrintWriter out=response.getWriter();
response.setContentType("text/html;charset=utf-8");
out.println("hello servlet!");
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("處理post()請求。。。。");
PrintWriter out=response.getWriter();
response.setContentType("text/html;charset=utf-8");
out.println("Hello servlet!");
}
}
2017-10-31
你的form結(jié)束標簽?zāi)兀?</form>
? ?<form action="servlet/HelloServlet" ?method="post">
? ? <input type="submit" value="post請求servlet"/>
? </form>
2017-11-01
加了</form>以后post確實可以用了，但是console面和老師的還是不一樣，我的還是紅紅的一片。。