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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。
使用Spring Initializr创建项目,选择Web组件
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"); } }
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*/ @ServletComponentScan public class SpringbootWebApplication { public static void main(String[] args) { SpringApplication.run(SpringbootWebApplication.class, args); } }
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"); } }
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; @Configuration public 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,请关注亿速云行业资讯频道,感谢大家的支持。
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