日志逻辑优化
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@ -4,9 +4,10 @@ import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.LineNumberReader;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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@ -133,48 +134,89 @@ public class XxlJobFileAppender extends AppenderSkeleton {
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String logFileName = trigger_log_id.concat(".log");
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File logFile = new File(filePathDateDir, logFileName);
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if (!logFile.exists()) {
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try {
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logFile.createNewFile();
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} catch (IOException e) {
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e.printStackTrace();
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return null;
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}
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return null;
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}
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String logData = readLines(logFile);
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return logData;
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}
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/**
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* read log data
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* @param logFile
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* @return
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*/
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public static String readLines(File logFile){
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BufferedReader reader = null;
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try {
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InputStream ins = null;
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BufferedReader reader = null;
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try {
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ins = new FileInputStream(logFile);
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reader = new BufferedReader(new InputStreamReader(ins, "utf-8"));
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if (reader != null) {
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String content = null;
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StringBuilder sb = new StringBuilder();
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while ((content = reader.readLine()) != null) {
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sb.append(content).append("\n");
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}
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return sb.toString();
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reader = new BufferedReader(new InputStreamReader(new FileInputStream(logFile), "utf-8"));
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if (reader != null) {
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StringBuilder sb = new StringBuilder();
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String line = null;
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while ((line = reader.readLine()) != null) {
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sb.append(line).append("\n");
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}
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} finally {
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if (ins != null) {
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try {
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ins.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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if (reader != null) {
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try {
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reader.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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} catch (Exception e) {
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return sb.toString();
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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} finally {
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if (reader != null) {
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try {
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reader.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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return null;
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}
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/**
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* read data from line num
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* @param sourceFile
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* @param fromLineNum
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* @return
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* @throws Exception
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*/
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public static String readLinesFrom(File logFile, int fromLineNum) {
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LineNumberReader reader = null;
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try {
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reader = new LineNumberReader(new FileReader(logFile));
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// sBuffer
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StringBuffer sBuffer = new StringBuffer();
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String line = null;
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int maxLineNum = 0;
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while ((line = reader.readLine())!=null) {
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maxLineNum++;
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if (reader.getLineNumber() >= fromLineNum) {
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sBuffer.append(line).append("\n");
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}
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}
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System.out.println("maxLineNum : " + maxLineNum);
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return sBuffer.toString();
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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if (reader != null) {
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try {
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reader.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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return null;
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/*
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// it will return the number of characters actually skipped
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reader.skip(Long.MAX_VALUE);
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int maxLineNum = reader.getLineNumber();
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maxLineNum++; // 最大行号
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*/
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}
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}
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