Go: How to get spring-managed beans

Original link:http://blog.csdn.net/a9529lty/article/details/42145545

1. When the servlet mode is loaded,
"Web. Xml"

XML code

2. <servlet>
4. <servlet-name>springmvc</servlet-name>
6. <servlet-class>org.springframework.web.servlet.DispatcherServlet</ Servlet-class>
8. <init-param>
10. <param-name>contextconfiglocation</param-name>
12. <param-value>classpath*:/springmvc.xml</param-value>
14. </init-param>
16. <load-on-startup>1</load-on-startup>
18. </servlet>

The key of the spring container placed in the ServletContext is Org.springframework.web.servlet.FrameworkServlet.CONTEXT.springMVC
Note the following SPRINGMVC, which is the value of your servlet-name configuration, be aware of changes in time.

Java code

1. ServletContext sc=
2. Webapplicationcontext attr = (webapplicationcontext) sc.getattribute ("  Org.springframework.web.servlet.FrameworkServlet.CONTEXT.springMVC ");

2, Listener mode load:
"Web. Xml"

XML code

2. <context-param>
4. <param-name>contextconfiglocation</param-name>
6. <param-value>/web-inf/applicationcontext</param-value >
8. </context-param>
12. <listener>
14. <listener-class>org.springframework.web.context.ContextLoaderListener< /Listener-class>
16. </Listener>

"Jsp/servlet" can be achieved in this way

Java code

1. ServletContext context = Getservletcontext ();
2. Webapplicationcontext ApplicationContext = webapplicationcontextutils. Getwebapplicationcontext (context);

3, the general method to, artifact Ah, the former 1, 22 methods are not universal, can be discarded.
In the configuration file, add:

XML code

1. <!--for holding ApplicationContext, you can use the static method of Springcontextholder.getbean (' xxxx ') to get the Spring bean object--
2. <beans class="Com.xxxxx.SpringContextHolder" lazy-init="false" />

Java code

2. Import Org.springframework.context.ApplicationContext;
4. Import Org.springframework.context.ApplicationContextAware;
6. /**
8. * Save the spring applicationcontext with a static variable to remove the Applicaitoncontext from any code anywhere.
10. *
12. */
14. Public class Springcontextholder implements Applicationcontextaware {
16. Private static ApplicationContext ApplicationContext;
20. /**
22. * Implement the context injection function of the Applicationcontextaware interface and store it in a static variable.
24. */
26. Public void Setapplicationcontext (ApplicationContext applicationcontext) {
28. Springcontextholder.applicationcontext = ApplicationContext; //Nosonar
30. }
34. /**
36. * Gets the applicationcontext stored in the static variable.
38. */
40. Public static ApplicationContext Getapplicationcontext () {
42. Checkapplicationcontext ();
44. return applicationcontext;
46. }
50. /**
52. * Gets the bean from static variable ApplicationContext, automatically transforms to the type of the assigned value object.
54. */
56. @SuppressWarnings ("unchecked")
58. Public static <T> T Getbean (String name) {
60. Checkapplicationcontext ();
62. Return (T) Applicationcontext.getbean (name);
64. }
68. /**
70. * Gets the bean from static variable ApplicationContext, automatically transforms to the type of the assigned value object.
72. */
74. @SuppressWarnings ("unchecked")
76. Public static <T> T Getbean (class<t> clazz) {
78. Checkapplicationcontext ();
80. Return (T) Applicationcontext.getbeansoftype (clazz);
82. }
86. /**
88. * Clear ApplicationContext static variables.
90. */
92. Public static void Cleanapplicationcontext () {
94. ApplicationContext = null;
96. }
100. Private static void Checkapplicationcontext () {
102. if (ApplicationContext = = null) {
104. Throw New IllegalStateException ("Applicaitoncontext not injected, please define Springcontextholder in Applicationcontext.xml"  );
106. }
108. }
110. }

Go: How to get spring-managed beans