我在这里阅读了很多关于这类问题的内容,但似乎我的代码很好但是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)}
以下是我的控制器的代码:
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";
}
}
我的服务守则:
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
}
}
界面代码:
package service;
public interface InteractionBanque {
boolean connecter(Client client);
}
我的Application类定义了应该用于连接所有内容的@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);
}
}
所以我没有得到它,对我来说,这应该做的工作,但自动装配不起作用。
帮助将不胜感激:)
答案 0 :(得分:6)
@SpringBootApplication
仅在使用它的类中扫描包(递归)。 InteractionBanqueImpl
在另一个包中。
使用Application
类创建包'app',然后移至controllers
和其他包。应该没事。
答案 1 :(得分:2)
正如@Mati所说,你的包有问题。
为您的应用程序创建一个根包,并移动它下面的所有内容,所以你可以这样:
+ myapp
Application.java
+ controller
+ service
+ serviceimpl
答案 2 :(得分:1)
您将Application
课程放在其余代码的父包中的答案将有效,但如果您不想更改您的包裹结构,那么另一种方法就是使用@ComponentScan
注释,指定包含要自动装配的组件的包,例如:
@ComponentScan(basePackages = {"serviceimpl", ...}