最近在做数据的转换处理，过程需要查看处理过程，所以要记录日志，就闲着来写了个日志工具类练练手，觉得用着还可以，贴出来，有需要的小朋友，可以直接拿去用:
package com.project.handlesapdata.material.syncMaterial;
import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.io.Writer; import java.text.SimpleDateFormat; import java.util.Date;
/** * * @author wangwuji * 2019年10月31日 * description: 日志输出工具类 */ public class LogUtil {
public static void main(String[] args) { LogUtil logUtil = new LogUtil(); logUtil.setMaxLogsize(1); while (logUtil.fileIndex<2) { logUtil.info("yyyy-MM-dd-HH-mm-ss yyyy-MM-dd-HH-mm-ss yyyy-MM-dd-HH-mm-ss"); } logUtil.setWriteTimeONConsole(true); logUtil.refreshLogFileStorePathConfig("d:/logs/dd"); while (logUtil.fileIndex<10) { logUtil.info("yyyy-MM-dd-HH-mm-ss yyyy-MM-dd-HH-mm-ss yyyy-MM-dd-HH-mm-ss"); } }
int fileIndex = 1; private String formatStr = "yyyy-MM-dd HH-mm-ss"; private SimpleDateFormat sdfDirName = new SimpleDateFormat("yyyyMMdd HHmmss"); private SimpleDateFormat sdfConsoleOupt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); private String logFileStorePath=null; private String logPath=null; private File logFile = null; private String originFileName="log.txt"; private BufferedWriter bw = null; private boolean isWriteTimeONConsole=false; private boolean isCreateDirParentWithTime=true; private long maxSize=1024*1024*5;//文件最大大小,单位字节，大于这个数字后生成第二个日志文件
public LogUtil() { initLogConfig(); } public LogUtil(String logFileStorePath) { this.logFileStorePath=logFileStorePath; initLogConfig(); } public LogUtil(String logFileStorePath,String originFileName) { this(logFileStorePath); this.originFileName=originFileName; initLogConfig(); } public LogUtil(String logFileStorePath,String originFileName,boolean isWriteTimeONConsole) { this(logFileStorePath,originFileName); this.isWriteTimeONConsole=isWriteTimeONConsole; initLogConfig(); } public LogUtil(String logFileStorePath,String originFileName, boolean isWriteTimeONConsole,boolean isCreateDirParentWithTime) { this(logFileStorePath,originFileName,isWriteTimeONConsole); this.isCreateDirParentWithTime=isCreateDirParentWithTime; initLogConfig(); } public LogUtil(String logFileStorePath,String originFileName, boolean isWriteTimeONConsole,boolean isCreateDirParentWithTime,long maxSize) { this(logFileStorePath,originFileName,isWriteTimeONConsole,isCreateDirParentWithTime); this.maxSize=maxSize; initLogConfig(); } private void initLogConfig() { initFormatStr(this.formatStr); initLogFileStorePath(this.logFileStorePath); initLogFile(); }
private void initFormatStr(String formatStr){ sdfDirName = new SimpleDateFormat(formatStr); } private void initLogFileStorePath(String logFileStorePath){ if(logFileStorePath==null){ String currentAbsolutePath=this.getClass().getResource("").getPath();//当前class根路径 String curDiskRootPath=currentAbsolutePath.substring(1,4);//当前磁盘分区根路径 logFileStorePath = curDiskRootPath+"/logs"; } if(isCreateDirParentWithTime){ logPath = logFileStorePath + "/" + sdfDirName.format(new Date()); }else{ logPath = logFileStorePath; } } private void initLogFile(){ File parentDirOflogFile = new File(logPath); if (!parentDirOflogFile.exists()) { parentDirOflogFile.mkdirs(); } logFile = new File(logPath + "/"+this.originFileName); try { if (!logFile.exists()) { logFile.createNewFile(); } Writer out = new FileWriter(logFile, true); bw = new BufferedWriter(out); } catch (IOException e) { e.printStackTrace(); } }
private void createNewFile() throws IOException { String fileName=originFileName.substring(0,originFileName.lastIndexOf(".")); String subfix = originFileName.substring(originFileName.lastIndexOf("."), originFileName.length()); String newName = fileName + fileIndex + subfix; logFile = new File(logPath + "/" + newName); logFile.createNewFile(); Writer out = new FileWriter(logFile, true); bw = new BufferedWriter(out); fileIndex++; } public void refreshLogConfig() { this.initLogConfig(); } public void refreshDateFormatConfig(String formatStr) { sdfDirName = new SimpleDateFormat(formatStr); } public void refreshLogFileStorePathConfig(String logFileStorePath) { initLogFileStorePath(logFileStorePath); initLogFile(); }
private void writeToDoc(String str) { try { if (logFile.length() > maxSize) { createNewFile(); } bw.write(str); bw.newLine(); bw.flush(); } catch (IOException e) { e.printStackTrace(); } } public void newLine() { try { bw.newLine(); bw.flush(); } catch (IOException e) { e.printStackTrace(); }
} public String debug(String str) { String outputInfo=null; if(isWriteTimeONConsole){ String time = sdfConsoleOupt.format(new Date()); outputInfo=time + ": " + str; }else{ outputInfo=str; } System.out.println(outputInfo); return outputInfo; } public void info(String str) { writeToDoc(debug(str)); } private void setFormatStr(String formatStr){ this.formatStr=formatStr; }
public void setLogFileStorePath(String logFileStorePath) { this.logFileStorePath = logFileStorePath; } public String getLogFileStorePath() { return logPath; } public void setOriginFileName(String originFileName) { this.originFileName=originFileName; } public String getOriginFileName() { return originFileName; } public void setMaxLogsize(int size){ maxSize=1024*1024*size; } public long getMaxLogsize(){ return maxSize; }
public boolean isCreateDirParentWithTime() { return isCreateDirParentWithTime; }
public void setCreateDirParentWithTime(boolean isCreateDirParentWithTime) { this.isCreateDirParentWithTime = isCreateDirParentWithTime; }
public boolean isWriteTimeONConsole() { return isWriteTimeONConsole; }
public void setWriteTimeONConsole(boolean isWriteTimeONConsole) { this.isWriteTimeONConsole = isWriteTimeONConsole; } }
代码中我封装了debug和info两个级别的输出，debug只输出到控制台，info输出到控制台同时输出到日志文件中。main方法中有调用的例子，需要的小伙伴，拿去用吧。有好的改进意见也可以提出来评论下，一块儿改进。
