Add exception handler

src/main/kotlin/top/fatweb/api/entity/common/ResponseResult.kt

@@ -0,0 +1,29 @@
+package top.fatweb.api.entity.common
+
+import io.swagger.v3.oas.annotations.media.Schema
+import java.io.Serializable
+
+class ResponseResult<T> private constructor(
+    @Schema(description = "响应码", defaultValue = "200")
+    val code: Int,
+
+    @Schema(description = "是否调用成功")
+    val success: Boolean,
+
+    @Schema(description = "信息")
+    val msg: String,
+
+    @Schema(description = "数据")
+    val data: T?
+) : Serializable {
+    companion object {
+        fun <T> build(code: ResponseCode, success: Boolean, msg: String, data: T?) =
+            ResponseResult(code.code, success, msg, data)
+
+        fun <T> success(code: ResponseCode = ResponseCode.SYSTEM_OK, msg: String = "success", data: T? = null) =
+            build(code, true, msg, data)
+
+        fun <T> fail(code: ResponseCode = ResponseCode.SYSTEM_ERROR, msg: String = "fail", data: T? = null) =
+            build(code, false, msg, data)
+    }
+}