How to use springAutowired to inject service method call in java

Today, I will talk to you about how to use springAutowired to inject service method calls in java, many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

1. Write service interface and implementation class

two。 Obtain the entity class under its service implementation classpath through class reflection

3. Main code block, related introduction to WebApplicationContext can be found on the Internet.

A reference to ServletContext can be obtained in / WebApplicationContext so that web applications can access the spring context. The getWebApplicationContext (ServletContext src) method of WebApplicationContextUtils is provided in spring to get the WebApplicationContext object WebApplicationContext wac = ContextLoader.getCurrentWebApplicationContext (); / / reflection gets the corresponding javaClass C1 = Class.forName (packageName); / / gets the method name, and methodName is the service layer method Method method = c1.getDeclaredMethod (methodName,String.class) / / get the injected service type. The serviceName value is: xxServceiImpl,// is executing the corresponding method method.invoke (wac.getBean (serviceName), params) through the invoke method.

4. You can also rewrite annotation methods to achieve spring DI injection into service or dao, and java reflection to call service layer or dao layer methods

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