spring 注解注入多个实现类(Qualifier)
有如下接口：
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public interface EmployeeService { public EmployeeDto getEmployeeById(Long id); } |
同时有下述两个实现类 EmployeeServiceImpl和EmployeeServiceImpl1：
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@Service("service") public class EmployeeServiceImpl implements EmployeeService { public EmployeeDto getEmployeeById(Long id) { return new EmployeeDto(); } } @Service("service1") public class EmployeeServiceImpl1 implements EmployeeService { public EmployeeDto getEmployeeById(Long id) { return new EmployeeDto(); } } |
调用代码如下：
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@Controller @RequestMapping("/emplayee.do") public class EmployeeInfoControl { @Autowired <strong>@Qualifier(</strong><strong>"service"</strong><strong>)</strong> EmployeeService employeeService; @RequestMapping(params = "method=showEmplayeeInfo") public void showEmplayeeInfo(HttpServletRequest request, HttpServletResponse response, EmployeeDto dto) { #略 } } |
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