标签:01 http 入门 Servlet WebServlet public import servlet javax
1.创建项目-webapp项目
2.在src下创建包,xom.liuboss.demo servlet
package com.liuboss.demo;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/*@WebServlet("/ser01")*/
@WebServlet(name = "servlet01",value = {"/ser01"})
public class servlet01 extends HttpServlet {
@Override
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("hello servlet!!!");
resp.getWriter().write("hello servlet!!!");
}
}
启动tomact
浏览器输出 控制台输出
@WebServlet("/ser01") 浏览器访问路径
-------实现servlet的三种方法
package com.liuboss.demo;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/*@WebServlet("/ser01")*/
@WebServlet(name = "servlet01",value = {"/ser01"})
public class servlet01 extends HttpServlet {
@Override
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("hello servlet!!!");
resp.getWriter().write("hello servlet!!!");
}
}
02
package com.liuboss.demo;
import javax.servlet.GenericServlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet("/ser02")
public class servlet02 extends GenericServlet {
@Override
public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
System.out.println("GenericServlet hello servlet!!!");
}
}
03
package com.liuboss.demo;
import javax.servlet.*;
import javax.servlet.annotation.WebServlet;
import java.io.IOException;
@WebServlet("/ser03")
public class servlet03 implements Servlet {
@Override
public void init(ServletConfig servletConfig) throws ServletException {
}
@Override
public ServletConfig getServletConfig() {
return null;
}
@Override
public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
System.out.println("实现接口!!!");
}
@Override
public String getServletInfo() {
return null;
}
@Override
public void destroy() {
}
}
控制台输出页面内容。
标签:01,http,入门,Servlet,WebServlet,public,import,servlet,javax 来源: https://blog.csdn.net/qq_39696115/article/details/111352190
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