Intellijidea建javaWeb以及Servlet简单实现

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 HelloWorld extends HttpServlet { private String message; @Override public void init() throws ServletException { message = "Hello world, this message is from servlet!"; } @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //设置响应内容类型 resp.setContentType("text/html"); //设置逻辑实现 PrintWriter out = resp.getWriter(); out.println("<h3>" + message + "</h3>"); } @Override public void destroy() { super.destroy(); } }