為什么跳轉(zhuǎn)的是空白頁？
<%@ page language="java" contentType="text/html; charset=utf-8"
??? pageEncoding="utf-8"%>
??? <%
??? ?String path=request.getContextPath();
??? ?String basePath=request.getScheme()+"://"+request.getServerName()+":"+request.getRemoteAddr();
?%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<base? href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<h1>第一個servlet小例子</h1>
<hr>
<a href="servlet/HelloServlet">Get方式請求HelloServlet</a>
</body>
</html>
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;
//繼承于HttpServlet
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();
?? ??? ?out.println("<p><strong>HelloServlet</strong></p><br>");
?? ?}
?? ?@Override
?? ?protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
?? ??? ?// TODO Auto-generated method stub
?? ??? ?System.out.println("處理Post（）請求。。。");
?? ?}
}
?<display-name>MyFirstServletDemo</display-name>
? <welcome-file-list>
??? <welcome-file>index.html</welcome-file>
??? <welcome-file>index.htm</welcome-file>
??? <welcome-file>index.jsp</welcome-file>
??? <welcome-file>default.html</welcome-file>
??? <welcome-file>default.htm</welcome-file>
??? <welcome-file>default.jsp</welcome-file>
? </welcome-file-list>
?
? <servlet>
? <servlet-name>HelloServlet</servlet-name>
? <servlet-class>servlet.HelloServlet</servlet-class>
? </servlet>
? <servlet-mapping>
? <servlet-name>HelloServlet</servlet-name>
? <url-pattern>/servlet/HelloServlet</url-pattern>
? </servlet-mapping>
?
</web-app>
2016-11-01
我和你同樣的情況。
在HelloServlet.java里頭加上
?/**
? *
? */
?private static final long serialVersionUID = 1L;
（PS：這是一個警告，我也不知道什么原因讓警告導(dǎo)致空白頁）
2016-07-14
在輸出之前添加一句response.setContentType("text/html;charset=UTF-8");試試看
2016-06-20
?doGet方法沒寫對吧，要依據(jù)完整的HTML格式寫。
response.setContentType("text/html;charset=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>");
out.println("<p><strong>HelloServlet</strong></p><br>");
out.println(" ?</BODY>");
out.println("</HTML>");
out.flush();
out.close();