添加引用
<dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency>
public static void writeFileLineByApacheIO(String fileContent) throws IOException { String fileName = ""; String nowday = DateUtil.getNowDayString(); String os = System.getProperty("os.name"); if (os.toLowerCase().startsWith("win")) { fileName = "C:\\log\\" + nowday + ".txt"; } else { fileName = "//log//" + nowday + ".txt"; } File file = new File(fileName); List<String> lines=new ArrayList<String>(); lines.add(fileContent); FileUtils.writeLines(file,"UTF-8",lines,true); }
import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; public final class DateUtil { //返回当前时间 public static String getNowTimeString() { Date date = new Date(); DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String time = format.format(date); return time; } //设置日期格式 public static String getNowDayString() { SimpleDateFormat dfday = new SimpleDateFormat("yyyy-MM-dd"); String nowday=dfday.format(new Date()); return nowday; } }
FileUtils.writeStringToFile和FileUtils.writeLines如果不加true就是替换而不是增量写。
参考:
使用FileUtils简化你的文件操作
Apache Commons工具集简介