Mysql慢查询日志文件转Excel的方法
最近公司生产环境需要排查慢SQL,导出日志txt文件后排查混乱,查找相关资料后并没有找到方便快捷的格式化处理工具,于是自己编写了一套Java读取慢SQL日志转为Excel小工具。
@Data public class SlowQuery { private double queryTime; private double lockTime; private String sqlQuery; private String tableName; private Date executionDate; }
public class mysqlSlowQueryLogParser { // 正则表达式匹配 慢日志内容格式抓取 private static final Pattern QUERY_TIME_PATTERN = Pattern.compile("# Query_time: (\\d+\\.\\d+)"); private static final Pattern LOCK_TIME_PATTERN = Pattern.compile(" Lock_time: (\\d+\\.\\d+)"); private static final Pattern TIMESTAMP_PATTERN = Pattern.compile("SET timestamp=(\\d+);"); publicrlVnUx static void main(String[] args) { MySQLSlowQueryLogParser parser = new MySQLSlowQueryLogParser(); // 慢查询日志存放路径 String filePath = "D:\\日常\\2.OA\\OASERVERLANDB-slow.log"; // 导出Excel路径 String excelPath = "D:\\日常\\2.OA\\slow_queries.xlsx"; // 读取慢查询日志 List<SlowQuery> slowQueries = parser.readSlowQueryLog(filePath); // 写入本地Excel中 parser.writeQueriesToExcel(slowQueries, excelPath); } /** * 读取慢查询日志 返回List对象 * @param filePath 慢查询日志文件路径 * @return List<SlowQuery> 解析结果 * */ public List<SlowQuery> readSlowQueryLog(String filePath) { List<SlowQuery> slowQueries = new ArrayList<>(); // 转流 try (BufferedReader br = new BufferedReader(new FileReader(filePath))) { String line; StringBuilder queryBuilder = new StringBuilder(); // 设定默认值 double queryTime = 0; double lockTime = 0; boolean isSlowQuery = false; long timestamp = 0; // 用于存储时间戳 while ((line = br.readLine()) != null) { if (line.startsWith("# Query_time")) { // 如果前一个查询存在,添加到列表 if (isSlowQuery) { addSlowQuery(slowQueries, queryTime, lockTime, queryBuilder.toString().trim(), timestamp); } // 解析查询时间和锁定时间 Matcher queryTimeMatcher = QUERY_TIME_PATTERN.matcher(line); if (queryTimeMatcher.find()) { queryTime = Double.parseDouble(queryTimeMatcher.group(1)); } Matcher lockTimeMatcher = LOCK_TIME_PATTERN.matcher(line); if (lockTimeMatcher.find()) { lockTime = Double.parseDouble(lockTimeMatcher.group(1)); } // 开始新的慢查询 isSlowQuery = true; // 清空缓存 queryBuilder.setLength(0); } else if (line.startsWith("SET timestamp")) { // 提取时间戳 Matcher timestampMatcher = TIMESTAMP_PATTERN.matcher(line); if (timestampMatcher.find()) { timestamp = Long.parseLong(timestampMatcher.group(1)); // 获取时间戳 } } else if (line.startsWith("#") || line.trim().isEmpty()) { // 忽略注释行和空行 continue; } else { // 记录当前慢查询的内容 if (isSlowQuery) { queryBuilder.append(line).append("\n"); } } } // 处理最后一个慢查询 if (queryBuilder.length() > 0) { addSlowQuery(slowQueries, queryTime, lockTime, queryBuilder.toString().trim(), timestamp); } } catch (IOException e) { System.out.printf(e.toString()); } return slowQueries; } /** * 添加慢查询对象 * @param slowQueries List<SlowQuery> 慢查询对象集合 * @param queryTime 查询时间 * @param lockTime 锁定时间 * @param sqlQuery Sql执行时间 * @param timestamp 时间戳 * */ private void addSlowQuery(List<SlowQuery> slowQueries, double queryTime, double lockTime, String sqlQuery, long timestamp) { SlowQuery slowQuery = new SlowQuery(); slowQuery.setQueryTime(queryTime); slowQuery.setLockTime(lockTime); slowQuery.setSqlQuery(sqlQuery); // 提取表名 slowQuery.setTableName(extractTableName(sqlQuery)); // 设置执行日期 slowQuery.setExecutionDate(new Date(timestamp * 1000)); slowQueries.add(slowQuery); } /** * 通过Sql语句中 提取出表名 * @param sqlQuery 执行的Sql语句 * android@return 表名 * */ private String extractTableName(String sqlQuery) { Pattern pattern = Pattern.compile("FROM\\s+([\\w.]+)", Pattern.CASE_INSENSITIVE); Matcher matcher php= pattern.matcher(sqlQuery); if (matcher.find()) { return matcher.group(1); } return ""; } /** * 通过处理后的集合生成到指定路径 * @param slowQueries 数据集合 * @param filePath 导出的Excel路径 * */ public void writeQueriesToExcel(List<http://www.devze.comSlowQuery> slowQueries, String filePath) { final int MAX_CELL_LENGTH = 32767; SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // 日期格式化 try (Workbook workbook = new XSSFWorkbook()) { Sheet sheet = workbook.createSheet("Slow Queries"); // 创建标题行 Row headerRow = sheet.createRow(0); headerRow.createCell(0).setCellValue("Query Time (s)"); headerRow.createCell(1).setCellValue("Lock Time (s)"); headerRow.createCell(2).setCellValue("SQL Query"); headerRow.createCell(3).setCellValue("Table Name"); headerRow.createCell(4).setCellValue("Execution Date"); // 填充数据行 int rowNum = 1; for (SlowQuery slowQuery : slowQueries) { Row row = sheet.createRow(rowNum++); row.createCell(0).setCellValue(slowQuery.getQueryTime()); row.createCell(1).setCellValue(slowQuery.getLockTime()); // 确保这里写入的是原始 double 值 String sqlQuery = slowQuery.getSqlQuery(); if (sqlQuery.length() > MAX_CELL_LENGTH) { sqlQuery = sqlQuery.substring(0, MAX_CELL_LENGTH); } row.createCell(2).setCellValue(sqlQuery); row.createCell(3).setCellValue(slowQuery.getTableName()); row.createCell(4).setCellValue(dateFormat.format(slowQuery.getExecutionDate())); } // 写入到文件 try (FileOutputStream fileOut = new FileOutputStream(filePath)) { workbook.write(fileOut); php } } catch (IOException e) { System.out.printf(e.toString()); } }
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