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创建获取ApplicationContext工具类：



  

1. 1 package com.performancetest.common.utils;
2. 2
3. 3 import org.springframework.beans.BeansException;
4. 4 import org.springframework.context.ApplicationContext;
5. 5 import org.springframework.context.ApplicationContextAware;
6. 6 import org.springframework.stereotype.Component;
7. 7
8. 8 import java.util.Map;
9. 9
10. 10 /**
11. 11  * Spring Context 工具类
12. 12  */
13. 13 @Component
14. 14 public class SpringContextUtils implements ApplicationContextAware {
15. 15     public static ApplicationContext applicationContext;
16. 16
17. 17     @Override
18. 18     public void setApplicationContext(ApplicationContext applicationContext)
19. 19             throws BeansException {
20. 20         SpringContextUtils.applicationContext = applicationContext;
21. 21     }
22. 22
23. 23     public static Object getBean(String name) {
24. 24         return applicationContext.getBean(name);
25. 25     }
26. 26
27. 27     public static <T> T getBean(String name, Class<T> requiredType) {
28. 28         return applicationContext.getBean(name, requiredType);
29. 29     }
30. 30
31. 31     public static boolean containsBean(String name) {
32. 32         return applicationContext.containsBean(name);
33. 33     }
34. 34
35. 35     public static boolean isSingleton(String name) {
36. 36         return applicationContext.isSingleton(name);
37. 37     }
38. 38
39. 39     public static Class<? extends Object> getType(String name) {
40. 40         return applicationContext.getType(name);
41. 41     }
42. 42
43. 43 }

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如果有报ApplicationContext空指针，则可能原因是没加载之前就往下走了，要在要 使用的类 前面加

1. @DependsOn("springContextUtils")

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