From 3894ada549fca594765c1e2f21a4a90bdea70316 Mon Sep 17 00:00:00 2001
From: haerong22 <haerong22@naver.com>
Date: Sun, 29 Jan 2023 02:07:10 +0900
Subject: [PATCH] #32 multi module: handle exception

---
 .../moduleapi/controller/DemoController.java  |  5 +++
 .../moduleapi/exception/CustomException.java  | 16 +++++++++
 .../exception/GlobalExceptionHandler.java     | 27 +++++++++++++++
 .../moduleapi/response/CommonResponse.java    | 33 +++++++++++++++++++
 .../moduleapi/service/DemoService.java        |  5 +++
 5 files changed, 86 insertions(+)
 create mode 100644 multimodule/module-api/src/main/java/com/example/moduleapi/exception/CustomException.java
 create mode 100644 multimodule/module-api/src/main/java/com/example/moduleapi/exception/GlobalExceptionHandler.java
 create mode 100644 multimodule/module-api/src/main/java/com/example/moduleapi/response/CommonResponse.java

diff --git a/multimodule/module-api/src/main/java/com/example/moduleapi/controller/DemoController.java b/multimodule/module-api/src/main/java/com/example/moduleapi/controller/DemoController.java
index f8cd7210..bdba4008 100644
--- a/multimodule/module-api/src/main/java/com/example/moduleapi/controller/DemoController.java
+++ b/multimodule/module-api/src/main/java/com/example/moduleapi/controller/DemoController.java
@@ -20,4 +20,9 @@ public class DemoController {
     public String find() {
         return demoService.find();
     }
+
+    @GetMapping("/exception")
+    public String exception() {
+        return demoService.exception();
+    }
 }
diff --git a/multimodule/module-api/src/main/java/com/example/moduleapi/exception/CustomException.java b/multimodule/module-api/src/main/java/com/example/moduleapi/exception/CustomException.java
new file mode 100644
index 00000000..0631dda9
--- /dev/null
+++ b/multimodule/module-api/src/main/java/com/example/moduleapi/exception/CustomException.java
@@ -0,0 +1,16 @@
+package com.example.moduleapi.exception;
+
+import com.example.modulecommon.enums.CodeEnum;
+import lombok.Getter;
+
+@Getter
+public class CustomException extends RuntimeException {
+    private final String returnCode;
+    private final String returnMessage;
+
+    public CustomException(CodeEnum codeEnum) {
+        super(codeEnum.getMessage());
+        this.returnCode = codeEnum.getCode();
+        this.returnMessage = codeEnum.getMessage();
+    }
+}
diff --git a/multimodule/module-api/src/main/java/com/example/moduleapi/exception/GlobalExceptionHandler.java b/multimodule/module-api/src/main/java/com/example/moduleapi/exception/GlobalExceptionHandler.java
new file mode 100644
index 00000000..c377ed75
--- /dev/null
+++ b/multimodule/module-api/src/main/java/com/example/moduleapi/exception/GlobalExceptionHandler.java
@@ -0,0 +1,27 @@
+package com.example.moduleapi.exception;
+
+import com.example.moduleapi.response.CommonResponse;
+import com.example.modulecommon.enums.CodeEnum;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(CustomException.class)
+    public CommonResponse<?> handleCustomException(CustomException e) {
+
+        return CommonResponse.builder()
+                .returnCode(e.getReturnCode())
+                .returnMessage(e.getReturnMessage())
+                .build();
+    }
+
+    @ExceptionHandler(Exception.class)
+    public CommonResponse<?> handleException(Exception e) {
+        return CommonResponse.builder()
+                .returnCode(CodeEnum.UNKNOWN_ERROR.getCode())
+                .returnMessage(CodeEnum.UNKNOWN_ERROR.getMessage())
+                .build();
+    }
+}
diff --git a/multimodule/module-api/src/main/java/com/example/moduleapi/response/CommonResponse.java b/multimodule/module-api/src/main/java/com/example/moduleapi/response/CommonResponse.java
new file mode 100644
index 00000000..e503e311
--- /dev/null
+++ b/multimodule/module-api/src/main/java/com/example/moduleapi/response/CommonResponse.java
@@ -0,0 +1,33 @@
+package com.example.moduleapi.response;
+
+import com.example.modulecommon.enums.CodeEnum;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@Builder
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class CommonResponse<T> {
+
+    private String returnCode;
+    private String returnMessage;
+    private T info;
+
+    public CommonResponse(CodeEnum codeEnum) {
+        this.returnCode = codeEnum.getCode();
+        this.returnMessage = codeEnum.getMessage();
+    }
+
+    public CommonResponse(T info) {
+        this.returnCode = CodeEnum.SUCCESS.getCode();
+        this.returnMessage = CodeEnum.SUCCESS.getMessage();
+        this.info = info;
+    }
+
+    public CommonResponse(CodeEnum codeEnum, T info) {
+        this.returnCode = codeEnum.getCode();
+        this.returnMessage = codeEnum.getMessage();
+        this.info = info;
+    }
+}
diff --git a/multimodule/module-api/src/main/java/com/example/moduleapi/service/DemoService.java b/multimodule/module-api/src/main/java/com/example/moduleapi/service/DemoService.java
index b2545ea9..b2a90a28 100644
--- a/multimodule/module-api/src/main/java/com/example/moduleapi/service/DemoService.java
+++ b/multimodule/module-api/src/main/java/com/example/moduleapi/service/DemoService.java
@@ -1,5 +1,6 @@
 package com.example.moduleapi.service;
 
+import com.example.moduleapi.exception.CustomException;
 import com.example.modulecommon.enums.CodeEnum;
 import com.example.modulecommon.sevice.CommonDemoService;
 import lombok.RequiredArgsConstructor;
@@ -20,4 +21,8 @@ public class DemoService {
     public String find() {
         return "find";
     }
+
+    public String exception() {
+        throw new CustomException(CodeEnum.UNKNOWN_ERROR);
+    }
 }