sync source code with article

spring-boot-modules/spring-boot-properties/src/main/java/com/baeldung/properties/ConfigPropertiesDemoApplication.java

@@ -7,7 +7,7 @@ import org.springframework.context.annotation.ComponentScan;
 import com.baeldung.configurationproperties.ConfigProperties;
 
 @SpringBootApplication
-@ComponentScan(basePackageClasses = { ConfigProperties.class, JsonProperties.class, CustomJsonProperties.class })
+@ComponentScan(basePackageClasses = { ConfigProperties.class, JsonProperties.class, CustomJsonProperties.class, Database.class })
 public class ConfigPropertiesDemoApplication {
     public static void main(String[] args) {
         new SpringApplicationBuilder(ConfigPropertiesDemoApplication.class).initializers(new JsonPropertyContextInitializer())

spring-boot-modules/spring-boot-properties/src/main/java/com/baeldung/properties/Database.java

@@ -0,0 +1,33 @@
+package com.baeldung.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ConfigurationProperties(prefix = "database")
+public class Database {
+
+    private String url;
+    private String username;
+    private String password;
+    
+    public String getUrl() {
+        return url;
+    }
+    public void setUrl(String url) {
+        this.url = url;
+    }
+    public String getUsername() {
+        return username;
+    }
+    public void setUsername(String username) {
+        this.username = username;
+    }
+    public String getPassword() {
+        return password;
+    }
+    public void setPassword(String password) {
+        this.password = password;
+    }
+    
+}

spring-boot-modules/spring-boot-properties/src/main/resources/application.properties

@@ -1,4 +1,8 @@
 management.endpoints.web.exposure.include=refresh
 spring.properties.refreshDelay=1000
 spring.config.location=file:extra.properties
-spring.main.allow-bean-definition-overriding=true
+spring.main.allow-bean-definition-overriding=true
+
+database.url=jdbc:postgresql:/localhost:5432/instance
+database.username=foo
+database.password=bar

spring-boot-modules/spring-boot-properties/src/test/java/com/baeldung/configurationproperties/DatabasePropertiesIntegrationTest.java

@@ -0,0 +1,30 @@
+package com.baeldung.configurationproperties;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.properties.ConfigPropertiesDemoApplication;
+import com.baeldung.properties.Database;
+
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = ConfigPropertiesDemoApplication.class)
+@TestPropertySource("classpath:application.properties")
+public class DatabasePropertiesIntegrationTest {
+
+    @Autowired
+    private Database database;
+    
+    @Test
+    public void testDatabaseProperties() {
+        Assert.assertNotNull(database);
+        Assert.assertEquals("jdbc:postgresql:/localhost:5432/instance", database.getUrl());
+        Assert.assertEquals("foo", database.getUsername());
+        Assert.assertEquals("bar", database.getPassword());
+    }
+}

spring-boot-modules/spring-boot-properties/src/test/resources/application.properties

@@ -1,4 +1,8 @@
 management.endpoints.web.exposure.include=refresh
 spring.properties.refreshDelay=1000
 spring.config.location=file:extra.properties
-spring.main.allow-bean-definition-overriding=true
+spring.main.allow-bean-definition-overriding=true
+
+database.url=jdbc:postgresql:/localhost:5432/instance
+database.username=foo
+database.password=bar