Logger.java
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package com.essa.framework;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.essa.framework.LogType;
public class Logger {
public static String OutputFileName = getDateTimeByFormat(new Date(), "yyyyMMdd_HHmmss");
private static OutputStreamWriter outputStreamWriter;
private static String logFileName;
public static boolean LogFlag = true;
public Logger() {
}
private static void WriteLog(String logEntry) {
try {
// 定义日志文件保存路径和日志文件名称
logFileName = ".\\Log" + "\\" + OutputFileName + ".log";
if (outputStreamWriter == null) {
File logFile = new File(logFileName);
if (!logFile.exists())
logFile.createNewFile();
//利用OutputStreamWriter往日志文件写内容，字符编码是unicode
outputStreamWriter = new OutputStreamWriter(new FileOutputStream(logFileName), "utf-8");
}
outputStreamWriter.write(logEntry, 0, logEntry.length());
outputStreamWriter.flush();
} catch (Exception e) {
System.out.println(LogType.LogTypeName.ERROR.toString() + ": Failed to write the file " + logFileName);
e.printStackTrace();
}
}
//获取当前系统时间，得到格式化时间字符串
private static String getDateTimeByFormat(Date date, String format) {
SimpleDateFormat df = new SimpleDateFormat(format);
return df.format(date);
}
public static void Output(LogType.LogTypeName logTypeName, String logMessage) {
Date date = new Date();
String logTime = getDateTimeByFormat(date, "yyyy-MM-dd HH:mm:ss.SSS");
String logEntry = logTime + " " + logTypeName.name() + ": " + logMessage + "\r\n";
System.out.print(logEntry);
// 定义一个开关，为True就输出日志，如果你不想输出，改成False
if (LogFlag)
WriteLog(logEntry);
}
}