文件创建错误时打印错误内容

main.go

@@ -79,7 +79,7 @@ func downloadFile(client http.Client, path, filename string, wg *sync.WaitGroup)
 	// 创建文件
 	file, err := os.Create(filepath.Join(path, filename))
 	if err != nil {
-		fmt.Printf("create file: %s error\n", filename)
+		fmt.Printf("create file %s error: %s\n", filename, err.Error())
 		return
 	}
 	defer file.Close()
@@ -91,7 +91,7 @@ func downloadFile(client http.Client, path, filename string, wg *sync.WaitGroup)
 				file.Write(buff[:n])
 				break
 			}
-			fmt.Println("error: ", err)
+			fmt.Println("error: ", err.Error())
 			os.Remove(filepath.Join(path, filename))
 			return
 		}