servlet输出html

我们可以将servlet看作是嵌套了html代码的java类

package com.atchina.servlet;

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;
import java.io.PrintWriter;

@WebServlet(name = "HelloWorldServlet")
public class HelloWorldServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();

        out.println("<html><head><title>hello world</title></head>");
        out.println("<body><h1>Hello world!!! hhh  </h1></body></html>");
        out.flush();
    }
}

web.xml的配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <servlet>
        <servlet-name>HelloWorld</servlet-name>
        <servlet-class>com.atchina.servlet.HelloWorldServlet</servlet-class>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>HelloWorld</servlet-name>
        <url-pattern>/HelloWorld</url-pattern>
    </servlet-mapping>
</web-app>

浏览器永远面向的是服务器端。

将jsp页面看作是嵌套了java代码的html页面。

请叫我大虾

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我们可以将servlet看作是嵌套了html代码的java类

将jsp页面看作是嵌套了java代码的html页面。

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