Question

如何用Spring将Service注入到Servlet中

Answer 1

在applicationContext.xml中定义数据层访问Bean：

<bean id="userDao" class="test.UserDaoImpl"></bean>

public class MyServlet extends HttpServlet {
private static final long serialVersionUID = 1L;

private UserDao userDao;
....
}

注入方法：：在Servlet的init方法中增加以下代码：

public void init(ServletConfig config) throws ServletException {
SpringBeanAutowiringSupport.processInjectionBasedOnServletContext(this,
config.getServletContext());
}

并且在变量userDao上一行增加@Autowired：

@Autowired
private UserDao userDao;

Answer 2

在applicationContext.xml中定义数据层访问Bean： public class MyServlet extends HttpServlet { private static final long serialVersionUID = 1L; private UserDao userDao; ....}注入方法：：在Servlet的init方法中增加以下代码： public v...