Create a Spring Boot application allowing a user to review Spring's property resolution precedence.

spring-geode/src/test/java/example/app/env/EnvironmentUsingSpringBootApplication.java

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+/*
+ * Copyright 2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+package example.app.env;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.data.cassandra.CassandraDataAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.core.env.Environment;
+
+/**
+ * {@link SpringBootApplication} allowing users to review Spring's property resolution precedence.
+ *
+ * @author John Blum
+ * @see org.springframework.boot.ApplicationRunner
+ * @see org.springframework.boot.SpringApplication
+ * @see org.springframework.boot.autoconfigure.SpringBootApplication
+ * @see org.springframework.context.annotation.Bean
+ * @see org.springframework.core.env.Environment
+ * @since 1.4.0
+ */
+@SuppressWarnings("unused")
+@SpringBootApplication(exclude = CassandraDataAutoConfiguration.class)
+public class EnvironmentUsingSpringBootApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(EnvironmentUsingSpringBootApplication.class, args);
+	}
+
+	@Value("${example.app.property:FROM-CODE}")
+	private String testProperty;
+
+	@Bean
+	ApplicationRunner environmentRunner(Environment environment) {
+
+		return args -> {
+			//System.err.printf("PROPERTY is [%s]%n", environment.getProperty("example.app.property"));
+			System.err.printf("PROPERTY is [%s]%n", this.testProperty);
+		};
+	}
+}

spring-geode/src/test/resources/application.properties

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+# Spring Boot application.properties for testing
+
+example.app.property=FROM-APPLICATION-PROPERTIES