type converter : DefaultFormatterConversionService

typeconverter/src/main/java/hello/typeconverter/WebConfig.java

@@ -4,6 +4,7 @@ import hello.typeconverter.converter.IntegerToStringConverter;
 import hello.typeconverter.converter.IpPortToStringConverter;
 import hello.typeconverter.converter.StringToIntegerConverter;
 import hello.typeconverter.converter.StringToIpPortConverter;
+import hello.typeconverter.fomatter.MyNumberFormatter;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.format.FormatterRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@@ -13,9 +14,11 @@ public class WebConfig implements WebMvcConfigurer {
 
     @Override
     public void addFormatters(FormatterRegistry registry) {
-        registry.addConverter(new StringToIntegerConverter());
+//        registry.addConverter(new StringToIntegerConverter());
-        registry.addConverter(new IntegerToStringConverter());
+//        registry.addConverter(new IntegerToStringConverter());
         registry.addConverter(new StringToIpPortConverter());
         registry.addConverter(new IpPortToStringConverter());
+
+        registry.addFormatter(new MyNumberFormatter());
     }
 }

typeconverter/src/test/java/hello/typeconverter/fomatter/FormattingConversionServiceTest.java

@@ -0,0 +1,34 @@
+package hello.typeconverter.fomatter;
+
+import hello.typeconverter.converter.IpPortToStringConverter;
+import hello.typeconverter.converter.StringToIpPortConverter;
+import hello.typeconverter.type.IpPort;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.format.support.DefaultFormattingConversionService;
+
+import static org.assertj.core.api.Assertions.*;
+
+public class FormattingConversionServiceTest {
+
+    @Test
+    void formattingConversionService() {
+        DefaultFormattingConversionService conversionService = new DefaultFormattingConversionService();
+
+        // 컨버터 등록
+        conversionService.addConverter(new StringToIpPortConverter());
+        conversionService.addConverter(new IpPortToStringConverter());
+
+        // 포맷터 등록
+        conversionService.addFormatter(new MyNumberFormatter());
+
+        // 컨버터 사용
+        IpPort ipPort = conversionService.convert("127.0.0.1:8080", IpPort.class);
+
+        assertThat(ipPort).isEqualTo(new IpPort("127.0.0.1", 8080));
+
+        // 포맷터 사용
+        assertThat(conversionService.convert(1000, String.class)).isEqualTo("1,000");
+        assertThat(conversionService.convert("1,000", Long.class)).isEqualTo(1000L);
+    }
+}