SpringBoot如何整合Servlet

今天就跟大家聊聊有关SpringBoot如何整合Servlet，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。

SpringBoot 整合 Servlet

一、准备项目：

使用Spring Initializr创建项目，选择Web组件

二、方式1：通过注解方式

1. 创建Servlet类

需要在Servlet类上增加@WebServlet 注解 ，urlPatterns指定匹配Url

//com.zhl.springbootweb.servlet.FirstServlet

package com.zhl.springbootweb.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;/** 整合Servlet方式一* */@WebServlet(name = "FirstServlet",urlPatterns = "/first")public class FirstServlet extends HttpServlet {    @Override    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {        System.out.println("First Servlet");    }}

2.修改启动类

在启动类上增加@ServletComponentScan注解

package com.zhl.springbootweb;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.web.servlet.ServletComponentScan;@SpringBootApplication/*在SpringBoot启动时会扫描@WebServlet注解，并将该类实例化*/@ServletComponentScanpublic class SpringbootWebApplication {    public static void main(String[] args) {        SpringApplication.run(SpringbootWebApplication.class, args);    }}

三、方式二：通过Bean注入方式

1.创建Servlet

• 不需要增加@WebServlet注解

//com.zhl.springbootweb.servlet.SecondServlet

package com.zhl.springbootweb.servlet;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;/*整合Servlet 方式二*/public class SecondServlet extends HttpServlet {@Override    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {        System.out.println("Second Servlet");    }}

2.创建配置类

• 使用@Configuration标识为配置类

• 使用@Bean 标识为组件

• addUrlMappings 方法添加URL匹配

//com.zhl.springbootweb.config.ServletConfig

package com.zhl.springbootweb.config;import com.zhl.springbootweb.servlet.SecondServlet;import org.springframework.boot.web.servlet.ServletRegistrationBean;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class ServletConfig {    /*完成Servlet组件注册*/    @Bean    public ServletRegistrationBean getServletRegistrationBean(){        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new SecondServlet());        servletRegistrationBean.addUrlMappings("/second");        return  servletRegistrationBean;    }}

看完上述内容，你们对SpringBoot如何整合Servlet有进一步的了解吗？如果还想了解更多知识或者相关内容，请关注行业资讯频道，感谢大家的支持。