servlet 规范 - Githubissues

saltfish666 commented 6 years ago

实现servlet规范，编译成class文件，注册在web.xml中

saltfish666 commented 6 years ago

想要编译一个 servlet 只能

javac -sourcepath /usr/local/apache-tomcat-8.5.29/webapps/examples/WEB-INF/classes:. -cp /usr/local/apache-tomcat-8.5.29/lib/servlet-api.jar Saltfish.java

前一个目录寻找util 包，后者寻找 servlrt 包

这么长就这么长吧

saltfish666 commented 6 years ago

servlet 之间区别 https://way2java.com/servlets/java-made-clear-difference-servlet-genericservlet-httpservlet/

saltfish666 commented 6 years ago

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Enumeration;
import java.util.ResourceBundle;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import util.HTMLFilter;

public class Saltfish extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private static final ResourceBundle RB = ResourceBundle.getBundle("LocalStrings");

    @Override
    public void doGet(HttpServletRequest request,
                      HttpServletResponse response)
        throws IOException, ServletException
    {
        response.setContentType("text/html");
        response.setCharacterEncoding("UTF-8");

        PrintWriter out = response.getWriter();
        out.println("<!DOCTYPE html><html>");
        out.println("<head>");
        out.println("<meta charset=\"UTF-8\" />");

        String title = RB.getString("sessions.title");
        out.println("<title>" + title + "</title>");
        out.println("</head>");
        out.println("<body bgcolor=\"white\">");

        out.println("<h1>hi</h1>");

        out.println("</body>");
        out.println("</html>");
    }

    @Override
    public void doPost(HttpServletRequest request,
                      HttpServletResponse response)
        throws IOException, ServletException
    {
        doGet(request, response);
    }

}

继承HttpServlet，重写doGet，写入文本，编译成class，注册到web.xml

saltfish666 commented 6 years ago

![][https://imgur.com/J3Hl8Mj]

这算是所谓的约定吧，痛恨。。。

saltfish666 / fileCloud

servlet 规范 #2