初始化项目

app/log/logger.go

@@ -0,0 +1,94 @@
+package log
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+var logDir = "./logs" // 日志目录，可根据需要修改
+
+// 初始化日志目录
+func Init() {
+	if err := os.MkdirAll(logDir, 0755); err != nil {
+		fmt.Println("create log dir failed:", err)
+	}
+	cleanupOldLogs()
+}
+
+// Cleanup 删除超过7天的日志文件
+func cleanupOldLogs() {
+	files, err := os.ReadDir(logDir)
+	if err != nil {
+		return
+	}
+	cutoff := time.Now().AddDate(0, 0, -7)
+	for _, f := range files {
+		if f.IsDir() {
+			continue
+		}
+		info, err := f.Info()
+		if err != nil {
+			continue
+		}
+		if info.ModTime().Before(cutoff) {
+			_ = os.Remove(filepath.Join(logDir, f.Name()))
+		}
+	}
+}
+
+// log 内部写文件
+func logToFile(level, msg string) {
+	fmt.Println(msg)
+	t := time.Now()
+	// 确保日志目录存在
+	if err := os.MkdirAll(logDir, 0755); err != nil {
+		fmt.Println("create log dir failed:", err)
+		return
+	}
+
+	filename := filepath.Join(logDir, t.Format("2006-01-02")+".log")
+	f, err := os.OpenFile(filename, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
+	if err != nil {
+		fmt.Println("open log file failed:", err)
+		return
+	}
+	defer f.Close()
+
+	line := fmt.Sprintf("%s [%s] %s\n", t.Format("2006-01-02 15:04:05"), level, msg)
+	_, _ = f.WriteString(line)
+}
+
+// 对外接口
+func Info(msg string) {
+	logToFile("INFO", msg)
+}
+
+// Println 支持多个参数拼接，写 INFO 日志
+func Println(v ...interface{}) {
+	msg := fmt.Sprint(v...)
+	logToFile("INFO", msg)
+}
+func Warn(msg string) {
+	logToFile("WARN", msg)
+}
+
+func Error(msg string) {
+	logToFile("ERROR", msg)
+}
+func Fatal(err error) {
+	if err == nil {
+		return
+	}
+	logToFile("ERROR", err.Error())
+}
+
+// Fatal 打印错误日志并退出程序
+func Fatalf(msg string, args ...interface{}) {
+	if len(args) > 0 {
+		msg = fmt.Sprintf(msg, args...)
+	}
+	logToFile("FATAL", msg)
+	os.Exit(1)
+}