Flex和spring集成时需要的SpringFactory

1. package springFactory;
2. import org.springframework.context.ApplicationContext;
3. import org.springframework.web.context.support.WebApplicationContextUtils;
4. import org.springframework.beans.BeansException;
5. import org.springframework.beans.factory.NoSuchBeanDefinitionException;
7. import flex.messaging.FactoryInstance;
8. import flex.messaging.FlexFactory;
9. import flex.messaging.config.ConfigMap;
10. import flex.messaging.services.ServiceException;
13. public class SpringFactory implements FlexFactory
14. {
15. private static final String SOURCE = "source";
18. public void initialize(String id, ConfigMap configMap) {}
21. public FactoryInstance createFactoryInstance(String id, ConfigMap properties)
22. {
23. SpringFactoryInstance instance = new SpringFactoryInstance(this, id, properties);
24. instance.setSource(properties.getPropertyAsString(SOURCE, instance.getId()));
25. return instance;
26. } // end method createFactoryInstance()
29. public Object lookup(FactoryInstance inst)
30. {
31. SpringFactoryInstance factoryInstance = (SpringFactoryInstance) inst;
32. return factoryInstance.lookup();
33. }
36. static class SpringFactoryInstance extends FactoryInstance
37. {
38. SpringFactoryInstance(SpringFactory factory, String id, ConfigMap properties)
39. {
40. super(factory, id, properties);
41. }
44. public String toString()
45. {
46. return "SpringFactory instance for id=" + getId() + " source=" + getSource() + " scope=" + getScope();
47. }
49. public Object lookup()
50. {
51. ApplicationContext appContext = WebApplicationContextUtils.getWebApplicationContext(flex.messaging.FlexContext.getServletConfig().getServletContext());
52. String beanName = getSource();
54. try
55. {
56. return appContext.getBean(beanName);
57. }
58. catch (NoSuchBeanDefinitionException nexc)
59. {
60. ServiceException e = new ServiceException();
61. String msg = "Spring service named '" + beanName + "' does not exist.";
62. e.setMessage(msg);
63. e.setRootCause(nexc);
64. e.setDetails(msg);
65. e.setCode("Server.Processing");
66. throw e;
67. }
68. catch (BeansException bexc)
69. {
70. ServiceException e = new ServiceException();
71. String msg = "Unable to create Spring service named '" + beanName + "' ";
72. e.setMessage(msg);
73. e.setRootCause(bexc);
74. e.setDetails(msg);
75. e.setCode("Server.Processing");
76. throw e;
77. }
78. }
80. }
82. }