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spring boot servlet 注入

spring boot 注入servlet的方法是借助ServletRegistrationBean这个类

例子如下:

先建一个servlet

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;public class TestServlet extends HttpServlet {    private static final long serialVersionUID = 1L;             protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        System.out.println("你的特殊的servlet。。。哦....");        response.getWriter().append("Served at: ").append(request.getContextPath());    }    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        doGet(request, response);    }}

然后注入即可:

    @Bean    public TestServlet servlet(){        return new TestServlet();    }        @Bean    public ServletRegistrationBean testServlet(TestServlet servlet) {        ServletRegistrationBean registration = new ServletRegistrationBean(servlet);        registration.setEnabled(true);        registration.addUrlMappings("/servlet/test");        return registration;    }

最后访问的接口地址即可看见效果了

 

这种运用场景是当你的项目引用第三方插件的时候注入servlet的时候产生,或者你不用springmvc。

spring boot servlet 注入