Question

我有一个这样的课 -

@Service
public class SomeClass {

@Autowired
Environment env;

private String property;

@Value("${pty}")
public void setPty(String pty) {
    pty = environment.getProperty("pty");
   } 
}

我正在尝试从自动装配的另一个类'Environment'中注入'pty'变量，当我的服务器启动时我得到了这个异常

创建名为'someClass'的bean时出错：注入自动装配依赖失败;嵌套异常是 org.springframework.beans.factory.BeanCreationException：不能 autowire方法：public void service.facade.ActionFacade.setPty（java.lang.String中）; 嵌套异常是java.lang.IllegalArgumentException：不能解决字符串值“$ {pty}”
中的占位符'pty'

Answer 1

异常是因为Spring上下文中没有属性pty。 @Value查找占位符＆＃39; pty＆＃39;在加载的资源文件中。

在您的情况下，它不是必需的，因为您需要从已Environment的{{1}}课程中获取它，下面的代码会给您提供这个想法。

Autowired

Answer 2

尝试@PostConstruct

PostConstruct注释用于在完成依赖注入以执行任何初始化之后需要执行的方法。

ConnectionResult cannot be resolved to a variable   AnalyticsMessages.java  /mixpanel-android/java/com/mixpanel/android/mpmetrics      

GooglePlayServicesUtil cannot be resolved   AnalyticsMessages.java  /mixpanel-android/java/com/mixpanel/android/mpmetrics   

IntDef cannot be resolved to a type Tweaks.java /mixpanel-android/java/com/mixpanel/android/mpmetrics   

The attribute value is undefined for the annotation type IntDef Tweaks.java /mixpanel-android/java/com/mixpanel/android/mpmetrics

The container 'Android Dependencies' references non existing library '/Users/myUser/Downloads/mixpanel-android-4.6.2/src/main/bin/mixpanel-android.jar' 

The import android.support cannot be resolved   Tweaks.java /mixpanel-android/java/com/mixpanel/android/mpmetrics   

The import com.google cannot be resolved    AnalyticsMessages.java  /mixpanel-android/java/com/mixpanel/android/mpmetrics

The project cannot be built until build path errors are resolved

来自自动装配对象的弹簧变量注入

2 个答案: