WriteMessageToFile
来源:互联网 发布:心理学前景怎么样知乎 编辑:程序博客网 时间:2024/04/29 15:02
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
public class WriteMessageToFile {
private String logPath;
public WriteMessageToFile(String logPath){
this.logPath = logPath;
}
public static void main(String[] args) {
String path = "D://log.log";
String logStr = "This is a log Test!";
new WriteMessageToFile(path).writeLogFile(logStr);
}
private synchronized void writeLogFile(String logStr) {
if (logPath.equals("")){
System.out.println("Error: The log path is NULL");
}
try {
File file = new File(logPath);
if (!file.exists()) //如果文件不存在,则创建一个!
file.createNewFile();
BufferedWriter writer = new BufferedWriter(new FileWriter(file, true));
// Write the timestamp.
writer.write("-----------");
writer.newLine();
Date nowTime = new Date();
SimpleDateFormat time=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
writer.write(time.format(nowTime));
writer.newLine();
// Write the output message.
writer.write(logStr);
writer.newLine();
writer.newLine();
// Close file.
writer.close();
} catch (java.io.IOException e) {
System.out.println("IOException:" + e.getMessage());
}
}
}