SpringMVC容器中Servlet如何调用service层接口

    xiaoxiao2021-03-25  56

    标题:在SpringMVC容器中Servlet如何调用Service层接口?

            直接最简单有效的方法,重写Servlet的Init()方法。代码如下:

    1)、 首先新建一个重写Servlet的Init()方法的类继承HttpServlet

    import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import org.springframework.beans.factory.config.AutowireCapableBeanFactory; import org.springframework.web.context.WebApplicationContext; import org.springframework.web.context.support.WebApplicationContextUtils; /**  * 描述:Servlet重写Init()方法  * @author WangKun  */ public class ServletProxy extends HttpServlet {   /** */ private static final long serialVersionUID = 1L; public void init() throws ServletException {          super.init();          WebApplicationContext wac = WebApplicationContextUtils.getWebApplicationContext(getServletContext());          AutowireCapableBeanFactory factory = wac.getAutowireCapableBeanFactory();          factory.autowireBean(this);      }   }   2)、新建自己需要的Servlet再继承重写Servlet的类 ( ServletProxy)   import javax.servlet.ServletException;   import javax.servlet.http.HttpServletRequest;   import javax.servlet.http.HttpServletResponse;   import org.springframework.beans.factory.annotation.Autowired; public class ***Servlet extends ServletProxy { @Autowired private ***Service ***Service;     private static final long serialVersionUID = 2827297299439162553L;          public void doGet(HttpServletRequest request, HttpServletResponse response)   throws Exception {           doPost(request, response);       }         public void doPost(HttpServletRequest request, HttpServletResponse response)    throws Exception {                      ***Service.自己的接口方法。         你自己的东西自己写了。     }    }
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