java 写了一个简单的Server一直说404

最新推荐文章于 2024-11-22 14:26:35 发布

Super____

最新推荐文章于 2024-11-22 14:26:35 发布

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本文介绍了一个简单的Java Servlet示例——HelloServlet。该Servlet接收HTTP GET和POST请求，并响应包含问候消息的HTML页面。通过设置响应类型和使用PrintWriter输出HTML内容实现。

package cc.openhome;

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

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

/**
 * Servlet implementation class HelloServlet
 */
@WebServlet("/hello.view")
public class HelloServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
    /**
     * @see HttpServlet#HttpServlet()
     */
    public HelloServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) 
			throws ServletException, IOException {
		response.setContentType("text/html;charset=UTF-8");
		PrintWriter out = response.getWriter();
		String name = request.getParameter("name");
		
		out.println("<html>");
		out.println("<head>");
		out.println("<title>Hello Servlet</title>");
		out.println("</head>");
		out.println("<body>");
		out.println("<h1>Hello!"+name+"..</h1>");
		out.println("</body>");
		out.println("</html>");
		out.close();
		response.getWriter().append("Served at: ").append(request.getContextPath());
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}

我输入的地址是http://localhost:8080/FirstServlet/hello.view

运行无报错

输入这个地址一直是404

然后我放了个图片进WebContent，可以正常显示