1. 通過注解掃描完成Servlet組件的注冊(SpringBoot整合Servlet方式一)

1.1. 使用maven構建SpringBoot的名叫spring-boot-servlet項目

1.2. pom.xml?

<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.bjbs</groupId><artifactId>spring-boot-servlet</artifactId><version>0.0.1-SNAPSHOT</version><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.13.RELEASE</version></parent><!-- 修改jdk版本 --><properties><java.version>1.8</java.version></properties><dependencies><!-- springBoot的啟動器 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency></dependencies> </project>

1.3. 編寫FirstServlet.java

package com.bjbs1.controller;import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;/*** SpringBoot整合Servlet方式一** <servlet> * <servlet-name>FirstServlet</servlet-name>* <servlet-class>com.bjsxt1.servlet.FirstServlet</servlet-class> * </servlet>** <servlet-mapping> * <servlet-name>FirstServlet</servlet-name>* <url-pattern>/first</url-pattern> * </servlet-mapping>*/ @WebServlet(name = "FirstServlet", urlPatterns = "/first") public class FirstServlet extends HttpServlet {private static final long serialVersionUID = 1L;@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {resp.getWriter().write("FirstServlet............");} }

1.4. @WebServlet注解

1.5. 編寫App.java啟動類?

package com.bjbs1;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.web.servlet.ServletComponentScan;/*** SpringBoot整合Servlet方式一, SpringBoot啟動類*/ @SpringBootApplication @ServletComponentScan // 在springBoot啟動時會掃描@WebServlet, 并將該類實例化 public class App {public static void main(String[] args) {SpringApplication.run(App.class, args);} }

1.6. 配置@ServletComponentScan注解, 在SpringBoot啟動時會掃描@WebServlet, 并將該類實例化

1.7. 運行項目, 并用瀏覽器訪問FirstServlet?

2. 通過方法完成Servlet組件的注冊(SpringBoot整合Servlet方式二)

2.1. 編寫SecondServlet.java

package com.bjbs2.controller;import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;/*** SpringBoot整合Servlet方式二*/ public class SecondServlet extends HttpServlet {private static final long serialVersionUID = 1L;@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {resp.getWriter().write("SecondServlet............");} }

2.2. 編寫App2.java啟動類

package com.bjbs2;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.web.servlet.ServletRegistrationBean; import org.springframework.context.annotation.Bean; import com.bjbs2.controller.SecondServlet;/*** SpringBoot整合Servlet方式二, SpringBoot啟動類*/ @SpringBootApplication public class App2 {public static void main(String[] args) {SpringApplication.run(App2.class, args);}@Beanpublic ServletRegistrationBean getServletRegistrationBean() {ServletRegistrationBean bean = new ServletRegistrationBean(new SecondServlet());bean.addUrlMappings("/second");return bean;} }

2.3. 使用org.springframework.boot.web.servlet.ServletRegistrationBean類注冊Servlet

2.4. 運行項目, 并用瀏覽器訪問SecondServlet?

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