From f5a8ebf9f353f062ee48357fd58a7a5e067ccb2f Mon Sep 17 00:00:00 2001
From: many2many <6168830@qq.com>
Date: Sun, 12 May 2024 17:00:00 +0800
Subject: [PATCH] =?UTF-8?q?=E5=BC=82=E5=B8=B8=E5=A4=84=E7=90=86?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../paopao/exception/AuthFailedException.java |  7 +++
 .../lk/paopao/exception/BaseException.java    | 41 +++++++++++++++++
 .../exception/GlobalExceptionHandler.java     | 46 +++++++++++++++++++
 .../exception/ResourceExistedException.java   |  7 +++
 .../exception/ResourceNotFoundException.java  |  8 ++++
 5 files changed, 109 insertions(+)
 create mode 100644 src/main/java/com/lk/paopao/exception/AuthFailedException.java
 create mode 100644 src/main/java/com/lk/paopao/exception/BaseException.java
 create mode 100644 src/main/java/com/lk/paopao/exception/GlobalExceptionHandler.java
 create mode 100644 src/main/java/com/lk/paopao/exception/ResourceExistedException.java
 create mode 100644 src/main/java/com/lk/paopao/exception/ResourceNotFoundException.java

diff --git a/src/main/java/com/lk/paopao/exception/AuthFailedException.java b/src/main/java/com/lk/paopao/exception/AuthFailedException.java
new file mode 100644
index 0000000..6633027
--- /dev/null
+++ b/src/main/java/com/lk/paopao/exception/AuthFailedException.java
@@ -0,0 +1,7 @@
+package com.lk.paopao.exception;
+
+public class AuthFailedException  extends BaseException{
+    public AuthFailedException(String message) {
+        super(401, message);
+    }
+}
diff --git a/src/main/java/com/lk/paopao/exception/BaseException.java b/src/main/java/com/lk/paopao/exception/BaseException.java
new file mode 100644
index 0000000..3323d91
--- /dev/null
+++ b/src/main/java/com/lk/paopao/exception/BaseException.java
@@ -0,0 +1,41 @@
+package com.lk.paopao.exception;
+
+/**
+ * 定义一个基础异常类，用于封装业务异常信息。
+ * 这个类是 RuntimeException 的子类，意味着它是一个非检查（Unchecked）异常。
+ * 它添加了一个错误码（code）来详细描述异常的类型。
+ */
+public abstract class BaseException extends RuntimeException{
+    // 异常的错误码
+    private final int code;
+
+    /**
+     * 构造函数，用于创建一个带有错误码和消息的基础异常实例。
+     *
+     * @param code 异常的错误码，用于标识异常的类型。
+     * @param message 异常的详细信息，帮助理解异常的原因。
+     */
+    public BaseException(int code, String message){
+       // 调用父类构造函数，将消息传递给父类，以初始化异常的详细信息。
+       super(message);
+       this.code = code;
+    }
+
+    /**
+     * 构造函数，用于创建一个带有错误码、消息和导致异常的原因的基础异常实例。
+     *
+     * @param code 异常的错误码，用于标识异常的类型。
+     * @param message 异常的详细信息，帮助理解异常的原因。
+     * @param cause 导致异常的原因，便于问题追踪和处理。
+     */
+    public BaseException(int code, String message, Throwable cause) {
+        // 调用父类构造函数，将消息和原因传递给父类，以初始化异常的详细信息和原因。
+        super(message, cause);
+        this.code = code;
+    }
+
+    public int getCode() {
+        return code;
+    }
+
+}
diff --git a/src/main/java/com/lk/paopao/exception/GlobalExceptionHandler.java b/src/main/java/com/lk/paopao/exception/GlobalExceptionHandler.java
new file mode 100644
index 0000000..810874a
--- /dev/null
+++ b/src/main/java/com/lk/paopao/exception/GlobalExceptionHandler.java
@@ -0,0 +1,46 @@
+package com.lk.paopao.exception;
+
+import com.lk.paopao.dto.rest.response.Result;
+import com.lk.paopao.dto.rest.response.ResultUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+/**
+ * 全局异常处理器，负责处理Controller层抛出的异常，提供统一的异常响应格式。
+ */
+@ControllerAdvice
+public class GlobalExceptionHandler {
+    private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);
+
+    /**
+     * 处理自定义异常BaseException，返回相应的错误结果。
+     *
+     * @param ex 自定义异常BaseException实例
+     * @return 返回封装了错误信息的Result对象
+     */
+    @ExceptionHandler(BaseException.class)
+    @ResponseBody
+    public Result handleBaseException(BaseException ex) {
+        // 记录未预期异常信息
+        log.info(ex.getMessage(),ex);
+        return ResultUtil.fail(ex.getCode(),ex.getMessage());
+    }
+
+    /**
+     * 处理未预期的异常，返回通用错误结果。
+     *
+     * @param ex 异常实例
+     * @return 返回封装了错误信息的Result对象
+     */
+    @ExceptionHandler(Exception.class)
+    @ResponseBody
+    public Result handleUnexpectedException(Exception ex) {
+        // 记录未预期异常信息
+        log.warn(ex.getMessage(),ex);
+        // 返回通用错误结果, 500表示服务器内部错误
+        return ResultUtil.fail(500,ex.getMessage());
+    }
+}
diff --git a/src/main/java/com/lk/paopao/exception/ResourceExistedException.java b/src/main/java/com/lk/paopao/exception/ResourceExistedException.java
new file mode 100644
index 0000000..5c2728b
--- /dev/null
+++ b/src/main/java/com/lk/paopao/exception/ResourceExistedException.java
@@ -0,0 +1,7 @@
+package com.lk.paopao.exception;
+
+public class ResourceExistedException  extends BaseException{
+    public ResourceExistedException(String resourceName, String condition){
+        super(409, "根据条件:【"+condition+"】可找到"+resourceName+"资源");
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/lk/paopao/exception/ResourceNotFoundException.java b/src/main/java/com/lk/paopao/exception/ResourceNotFoundException.java
new file mode 100644
index 0000000..31591cd
--- /dev/null
+++ b/src/main/java/com/lk/paopao/exception/ResourceNotFoundException.java
@@ -0,0 +1,8 @@
+package com.lk.paopao.exception;
+
+public class ResourceNotFoundException extends BaseException{
+
+    public ResourceNotFoundException(String resourceName, String condition){
+        super(404, "根据条件:【"+condition+"】无法找到"+resourceName+"资源");
+    }
+}
\ No newline at end of file