@RestController中无法自动装入字段

Question

我遇到了问题。我已经研究了很多相同的主题，但我无法解决问题。 我有SpringBoot应用程序。我想开发RestController类。而如何看起来：

@RequestMapping("achievement/") 
@RestController 
public class AchievementController { 

@Autowired 
private AchievementManager manager; 

@RequestMapping(value = "{id}", method = RequestMethod.GET) 
public Achievement showAchievement(@PathVariable("id") Long id) throws DBException { 
    return manager.getAchievementById(id); 
} 

@RequestMapping(value = "/", consumes = "application/json", method = RequestMethod.POST) 
public Achievement createAchievement(@RequestBody Achievement achievement) throws DBException { 
    return manager.createAchievementAndReturn(achievement); 
} 

@RequestMapping(value = "{id}", consumes = "application/json", method = RequestMethod.PUT) 
public Achievement changeAchievement(@PathVariable("id") Long id, @RequestBody Achievement achievement) throws DBException { 
    return manager.saveChangesAndReturn(id, achievement); 
} 
} 

而且我已经麻烦@Autowire经理现场

Exception encountered during context initialization - cancelling 
refresh attempt:org.springframework.beans.factory. 
BeanCreationException: 
Error creating bean with name 'achievementController': Injection of 
autowired dependencies failed; nested exception is 
org.springframework.beans.factory.BeanCreationException: 
Could not autowire field: private 
com.rpglife.data.managers.AchievementManager 
com.rpglife.controller.AchievementController.manager; nested exception 
is org.springframework.beans.factory.NoSuchBeanDefinitionException: No 
qualifying bean of type [com.rpglife.data.managers.AchievementManager] 
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)} 
. 
. 
. 
Caused by: org.springframework.beans.factory. 
NoSuchBeanDefinitionException: No qualifying bean of type 
[com.rpglife.data.managers.AchievementManager] 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)} 

我AchievmentManager类：

@SuppressWarnings("unchecked") 
public class AchievementManager { 

private final Class thisClass = Achievement.class; 
private BaseDAO dao; 

public AchievementManager(BaseDAO dao) { 
    this.dao = dao; 
} 

public Achievement getAchievementById(Long id) { 
    return (Achievement) dao.getItem(thisClass, id); 
} 

public Achievement createAchievementAndReturn(Achievement achievement) { 
    dao.createItem(achievement); 
    return getAchievementById(achievement.getId()); 
} 

public Achievement saveChangesAndReturn(Long id, Achievement achievement) { 
    return dao.updateItem(thisClass, id, achievement); 
} 
} 

Spring的XML是在这里：

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xsi:schemaLocation=" 
    http://www.springframework.org/schema/beans  
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> 

<bean name="manager" class="com.rpglife.data.managers.AchievementManager" > 
    <constructor-arg name="dao" ref="dao"/> 
</bean> 

<bean name="dao" class="com.rpglife.data.BaseDAO" > 
    <constructor-arg name="sessionFactory" ref="sessionFactory"/> 
</bean> 

<bean id="sessionFactory" 
     class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> 
    <property name="configLocation" value="hibernate.cfg.xml"/> 
</bean> 

<context:component-scan base-package="com.rpglife.data"/> 

</beans> 

主类：

@SpringBootApplication 
public class Main { 
    public static void main(String[] args) { 
     SpringApplication.run(Main.class, args); 
    } 
} 

在这里，我的项目结构（我可以在需要太重视资源）： enter image description here

我试图找出：

1. 我试图使用@Qualyfier（ “经理” ）
2. 尝试使用@ComponentScan（basePackages = {“com.rpglife”}）和 @SpringBootApplication（scanBasePackages = {“com.rpglife”}）（但主要的 类留在com.rpglife。其他的包也在这儿，我肯定 这是无用的）

我不知道什么是错的... 我会，如果你给我一些答案和建议非常感谢。希望你有愉快的一天！）

更新： 我认为这可能是我的spring.xml的麻烦。如果它不起作用并且bean不能被定义呢？如何检查它...

更新： 错误，当我加@

Exception encountered during context initialization - cancelling 
refresh attempt: 
org.springframework.beans.factory.BeanCreationException: Error creating 
bean with name 'achievementController': Injection of autowired 
dependencies failed; nested exception is 
org.springframework.beans.factory.BeanCreationException: Could not 
autowire field: private com.rpglife.data.managers.AchievementManager 
com.rpglife.controller.AchievementController.manager; nested exception 
is org.springframework.beans.factory.BeanCreationException: Error 
creating bean with name 'achievementManager' defined in file 
[/Users/eignatik/IdeaProjects/LifeRPG/be/target 
/classes/com/rpglife/data/managers/AchievementManager.class]: 
Instantiation of bean failed; nested exception is 
org.springframework.beans.BeanInstantiationException: Failed to 
instantiate [com.rpglife.data.managers.AchievementManager]: No default 
constructor found; nested exception is java.lang.NoSuchMethodException: 
com.rpglife.data.managers.AchievementManager.<init>() 

Answer 1

你混合春天引导和基于XML的应用程序环境。

默认情况下，Spring Boot不会加载您的应用程序上下文xml文件。 （春季启动巨资促进非基于XML的上下文）

你有两个选择：

1. 不要使用XML和注释你的类的一切。嵌套在您的@SpringBootApplication包中的所有Spring注释类将被扫描。这是如何使用Spring Boot应该使用恕我直言。如果
2. 检查这个你真的想继续attachement基本软件包使用XML http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#using-boot-importing-xml-configuration