servlet入门

使用工具:IDEA

创建Web工程

image.png

image.png

image.png

文件结构

image.png

HelloServlet

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

public class HelloServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setContentType("text/html;charset=utf-8");
        PrintWriter out = resp.getWriter();
        out.println("
Hello Servlet
");
    }
}

web.xml

    
        hello
        com.chen.web.HelloServlet
    
    
        hello
        /hello
    

启动项目

image.png

访问

image.png