servlet 使用spring管理bean

servlet 使用spring管理bean

要serlvet使用注解的形式去注入bean，那么如何才能将spring管理的bean注入到servlet中。原本spring管理的bean和servlet不在一个上下文环境中是无法相互注入的。

解决办法创建一个AbstractServlet 抽象类，让你的所有servlet继承于此类

?

?

 import java.io.IOException;import javax.servlet.ServletConfig;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.context.support.SpringBeanAutowiringSupport;/** * Servlet implementation class AbstractServlet */public class AbstractServlet extends HttpServlet {private static final long serialVersionUID = 1L;/** * @see HttpServlet#HttpServlet() */public AbstractServlet() {super();// TODO Auto-generated constructor stub}public void init(ServletConfig config) throws ServletException {SpringBeanAutowiringSupport.processInjectionBasedOnServletContext(this,config.getServletContext());}/** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse *      response) */protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {}/** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse *      response) */protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {doGet(request, response);}}

?关键在于SpringBeanAutowiringSupport.processBInjectionasedOnServletContext(this,

config.getServletContext());

通过使用spring提供的支持可以将当前的servlet上下文环境添加到spring管理的上下文环境中。

当然还有其他一些方法就不在这赘述了。