通过锁方式，只能允许单个线程操作文件，避免同时操作同一文件造成“由于另一进程正在访问...”的错误
public class LogServices
{
private static LogServices _instance;
private static readonly object _lock = new object();
private static readonly object _lockFile=new object();
private LogServices()
{
}
public static LogServices Instance()
{
if (_instance == null)
{
lock (_lock)
{
if (_instance == null)
{
_instance = new LogServices();
return _instance;
}
else{
return _instance;
}
}
}
else
{
return _instance;
}
}
public bool GenerateLogFile(string strText, string folder = "")
{
//lock (_lockFile)
{
string filePath = Path.Combine(Directory.GetCurrentDirectory(), "Log");
bool bresult = false;
string currentDate = DateTime.Now.ToString("yyyyMMdd");
string currentTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
if (filePath.Length <= 0)
return bresult;
else
{
filePath = string.IsNullOrWhiteSpace(folder) ? filePath : Path.Combine(filePath, folder);
lock (_lockFile)
{
//路径不存在则创建路径
if (!Directory.Exists(filePath))
{
Directory.CreateDirectory(filePath);
}
filePath = Path.Combine(filePath, currentDate + folder + ".txt");
//文件不存在则生成文件
if (!File.Exists(filePath))
{
File.Create(filePath).Close();
}
StreamWriter sw = new StreamWriter(filePath, true, System.Text.Encoding.Default);//第一个参数代表路径，第二个参数表示文件是否覆盖还是在原有文件基础上添加，第三个参数代表编码格式
sw.WriteLine(currentTime + ":" + strText);//写入txt文件
bresult = true;
sw.Flush();
sw.Close();
}
}
return bresult;
}
}
}
