#35 springboot: external read - @ConfigurationProperties

springboot/external-read/src/main/java/hello/ExternalReadApplication.java

@@ -1,14 +1,16 @@
 package hello;
 
-import hello.config.MyDataSourceEnvConfig;
-import hello.config.MyDataSourceValueConfig;
+import hello.config.MyDataSourceConfigV1;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.properties.ConfigurationPropertiesScan;
 import org.springframework.context.annotation.Import;
 
 //@Import(MyDataSourceEnvConfig.class)
-@Import(MyDataSourceValueConfig.class)
+//@Import(MyDataSourceValueConfig.class)
+@Import(MyDataSourceConfigV1.class)
 @SpringBootApplication(scanBasePackages = "hello.datasource")
+@ConfigurationPropertiesScan
 public class ExternalReadApplication {
 
     public static void main(String[] args) {

springboot/external-read/src/main/java/hello/config/MyDataSourceConfigV1.java

@@ -0,0 +1,28 @@
+package hello.config;
+
+import hello.datasource.MyDataSource;
+import hello.datasource.MyDatasourcePropertiesV1;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+
+@Slf4j
+@RequiredArgsConstructor
+//@EnableConfigurationProperties(MyDatasourcePropertiesV1.class)
+public class MyDataSourceConfigV1 {
+
+    private final MyDatasourcePropertiesV1 properties;
+
+    @Bean
+    public MyDataSource dataSource() {
+        return new MyDataSource(
+                properties.getUrl(),
+                properties.getUsername(),
+                properties.getPassword(),
+                properties.getEtc().getMaxConnection(),
+                properties.getEtc().getTimeout(),
+                properties.getEtc().getOptions()
+        );
+    }
+}

springboot/external-read/src/main/java/hello/datasource/MyDatasourcePropertiesV1.java

@@ -0,0 +1,26 @@
+package hello.datasource;
+
+import lombok.Data;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.List;
+
+@Data
+@ConfigurationProperties("my.datasource")
+public class MyDatasourcePropertiesV1 {
+
+    private String url;
+    private String username;
+    private String password;
+    private Etc etc;
+
+    @Data
+    public static class Etc {
+
+        private int maxConnection;
+        private Duration timeout;
+        private List<String> options = new ArrayList<>();
+    }
+}