EnvironmentProcessor

whatsmars-spring-boot-samples/whatsmars-boot-sample-bean/src/main/java/org/hongxi/whatsmars/boot/sample/bean/Application.java

@@ -2,9 +2,6 @@ package org.hongxi.whatsmars.boot.sample.bean;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
-import org.springframework.context.annotation.Bean;
-import org.springframework.core.annotation.Order;
 
 /**
  * Created by shenhongxi on 2020/6/8.
@@ -15,26 +12,4 @@ public class Application {
     public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
     }
-
-    @Order(1)
-    @ConditionalOnMissingBean
-    @Bean
-    public DemoBean demoBean() {
-        return new DemoBean();
-    }
-
-    @Bean
-    public DemoBean demoBean2() {
-        return new DemoBean();
-    }
-
-    @Bean
-    public OrderedDemoBean orderedDemoBean() {
-        return new OrderedDemoBean();
-    }
-
-    @Bean
-    public DemoBeanPostProcessor demoBeanPostProcessor() {
-        return new DemoBeanPostProcessor();
-    }
 }

whatsmars-spring-boot-samples/whatsmars-boot-sample-bean/src/main/java/org/hongxi/whatsmars/boot/sample/bean/ApplicationConfiguration.java

+package org.hongxi.whatsmars.boot.sample.bean;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Conditional;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.annotation.Order;
+
+/**
+ * Created by shenhongxi on 2020/6/22.
+ */
+@Configuration
+public class ApplicationConfiguration {
+
+    @Order(1)
+    @ConditionalOnMissingBean
+    @Bean
+    public DemoBean demoBean() {
+        return new DemoBean();
+    }
+
+    @Bean
+    public DemoBean demoBean2() {
+        return new DemoBean();
+    }
+
+    @Bean
+    public OrderedDemoBean orderedDemoBean() {
+        return new OrderedDemoBean();
+    }
+
+    @Bean
+    public DemoBeanPostProcessor demoBeanPostProcessor() {
+        return new DemoBeanPostProcessor();
+    }
+
+    @Bean
+    @Conditional(OrCondition.class)
+    public ConditionalBean conditionalBean() {
+        return new ConditionalBean();
+    }
+}

whatsmars-spring-boot-samples/whatsmars-boot-sample-bean/src/main/java/org/hongxi/whatsmars/boot/sample/bean/ConditionalBean.java

+package org.hongxi.whatsmars.boot.sample.bean;
+
+/**
+ * Created by shenhongxi on 2020/6/22.
+ */
+public class ConditionalBean {
+
+    public ConditionalBean() {
+        System.out.println("new ConditionalBean");
+    }
+}

whatsmars-spring-boot-samples/whatsmars-boot-sample-bean/src/main/java/org/hongxi/whatsmars/boot/sample/bean/EnvironmentProcessor.java

+package org.hongxi.whatsmars.boot.sample.bean;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.env.EnvironmentPostProcessor;
+import org.springframework.core.env.ConfigurableEnvironment;
+
+public class EnvironmentProcessor implements EnvironmentPostProcessor {
+    @Override
+    public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) {
+        System.out.println("postProcessEnvironment");
+    }
+}
\ No newline at end of file

whatsmars-spring-boot-samples/whatsmars-boot-sample-bean/src/main/java/org/hongxi/whatsmars/boot/sample/bean/OrCondition.java

+package org.hongxi.whatsmars.boot.sample.bean;
+
+import org.springframework.context.annotation.Condition;
+import org.springframework.context.annotation.ConditionContext;
+import org.springframework.core.env.Environment;
+import org.springframework.core.type.AnnotatedTypeMetadata;
+
+/**
+ * Created by shenhongxi on 2020/6/22.
+ */
+public class OrCondition implements Condition {
+
+    @Override
+    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
+        Environment environment = context.getEnvironment();
+        return environment.containsProperty("a") || environment.containsProperty("b");
+    }
+}

whatsmars-spring-boot-samples/whatsmars-boot-sample-bean/src/main/resources/META-INF/spring.factories

+org.springframework.boot.env.EnvironmentPostProcessor=\
+org.hongxi.whatsmars.boot.sample.bean.EnvironmentProcessor
\ No newline at end of file

whatsmars-spring-boot-samples/whatsmars-boot-sample-bean/src/main/resources/application.yml

+a: xx
\ No newline at end of file