[英]Spring Autowired service and controller not working
我在這里閱讀了很多關於這種問題的內容,但似乎我的代碼很好但是autowire不能正常工作:
Error creating bean with name 'optionController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private service.InteractionBanque controllers.OptionController.interactionBanque; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [service.InteractionBanque] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
這是我的控制器的代碼:
package controllers;
package controllers;
import javax.annotation.Resource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import model.Banque;
import model.Client;
import service.InteractionBanque;
import serviceimpl.InteractionBanqueImpl;
@Controller
public class OptionController {
@Autowired
private InteractionBanque interactionBanque;
@RequestMapping(value="/virement",method=RequestMethod.GET)
public String index(Model model, @ModelAttribute Client client) {
model.addAttribute("virement", new Virement());
return "virement";
}
@RequestMapping(value="/virement",method=RequestMethod.POST)
public String index(@ModelAttribute Virement virement, Model model) {
return "options";
}
}
我的服務守則:
package serviceimpl;
import java.util.HashMap;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
import dao.BanqueDAO;
import daoimpl.BanqueDaoImpl;
import model.Banque;
import model.Client;
import service.InteractionBanque;
import utils.SendRequest;
@Service
public class InteractionBanqueImpl implements InteractionBanque {
public static final int END_ID_BANQUE = 5;
public static final String LOGIN_URL = "/account";
public boolean connecter(Client client) {
some code
}
}
和接口的代碼:
package service;
public interface InteractionBanque {
boolean connecter(Client client);
}
我的Application類定義了應該用於連接所有內容的@SpringBootApplication
:
package controllers;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
所以我不明白,對我來說,這應該做的工作,但自動裝配不起作用。
幫助將不勝感激:)
@SpringBootApplication
僅在使用它的類中掃描包(遞歸)。 InteractionBanqueImpl
位於另一個包中。
使用Application
類創建一個包'app',然后移動到它的controllers
和其他包。 應該沒事。
正如@Mati所說,你的包有問題。
為您的應用程序創建一個root包並移動它下面的所有內容,所以你有這樣的東西:
+ myapp
Application.java
+ controller
+ service
+ serviceimpl
您將Application
類放在其余代碼的父包中的答案是可行的,但如果您不想更改包結構,則另一種方法是使用@ComponentScan
注釋,指定包包含您要自動裝配的組件,例如:
@ComponentScan(basePackages = {"serviceimpl", ...}
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