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Spring 3请求处理失败; 嵌套异常是java.lang.NullPointerException

我在尝试启动我的应用程序时遇到了困难,我在几天内找到了我的错误,但我被困在代码中的某个地方并请求您的帮助谢谢

SingleTransactionsController

@Controller
public class SingleTransactionsController {
private SingleTransactionsService singleTransactionsService;


@RequestMapping(value="/disableUser/{sicil}", method=RequestMethod.GET)
public String disableUser(@PathVariable String sicil, Model model){
    singleTransactionsService.disableUser(sicil);
    model.addAttribute("message", sicil);
    return "hello";
}

}
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SingleTransactionsDAO

public interface SingleTransactionsDAO {

public void disableUser(String sicil);

}
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SingleTransactionsDAOImpl

@Repository
public class SingleTransactionsDAOImpl implements SingleTransactionsDAO{

@Override
public void disableUser(String sicil) {
    System.out.println(sicil);
}
}
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SingleTransactionsService

public interface SingleTransactionsService {
public void disableUser(String sicil);
}
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SingleTransactionsServiceImpl

@Service
public class SingleTransactionsServiceImpl implements SingleTransactionsService{

@Autowired
private SingleTransactionsDAO singleTransactionsDAO;


public void disableUser(String sicil) {
    singleTransactionsDAO.disableUser(sicil);

} …
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spring-mvc spring-3

0
推荐指数
1
解决办法
8万
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spring-3 ×1

spring-mvc ×1