Springboot configuring @PropertySource, @ImportResource, @Bean

First, @PropertySource

@PropertySource: Load the specified configuration file

@PropertySource (value = {"Classpath:person.properties"= "Person")the publicclass Person {}

Second, @ImportResource: Import the Spring configuration file, let the contents of the configuration file take effect

Spring boot does not have a spring configuration file, and the configuration files we write ourselves are not automatically recognized;
Want spring's configuration file to take effect, load it in, @ImportResource label on a configuration class

@ImportResource (locations = {"Classpath:applicationContext.xml"}) @SpringBootApplication Public class springbootconfigapplication {    publicstaticvoid  main (string[] args) {        Springapplication.run (springbootconfigapplication. class , args);}    }

Third, Springboot recommend the way to add components to the container, the recommended way to use full annotation

1. Configuration class @configuration------>spring configuration file
2. Add components to the container using @bean

/** * @Configuration: Indicates that the current class is a configuration class; Replace the previous spring configuration file * * Add components with <bean><bean/> tags in the configuration file * */ @Configuration  Public class myappconfig {  // adds the return value of the method to the container; The default ID of this component in the container is the method name @Bean   Public　　　　HelloService HelloService () {System.out.println ("configuration class @bean adding components to the container ...");　　 returnnew  HelloService (); }}　　

Springboot configuring @PropertySource, @ImportResource, @Bean