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227
day02/src/com/inmind/student/杨靖宇/LogAnalyzer.java
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227
day02/src/com/inmind/student/杨靖宇/LogAnalyzer.java
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package com.inmind.student.杨靖宇;
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import java.io.*;
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import java.net.Socket;
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import java.util.*;
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import java.net.*;
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public class LogAnalyzer {
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private static final String LOG_DIR = "D:\\io_test";
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private static final String SERVER_HOST = "localhost";
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private static final int SERVER_PORT = 8080;
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private final List<Log> logs = Collections.synchronizedList(new ArrayList<>());
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private final List<Thread> threads = new ArrayList<>();
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public static void main(String[] args) {
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LogAnalyzer analyzer = new LogAnalyzer();
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try {
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analyzer.analyze();
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} catch (FileNotFoundException e) {
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System.err.println("[错误] 日志目录不存在: " + e.getMessage());
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} catch (Exception e) {
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System.err.println("[错误] 分析过程中出现异常: " + e.getMessage());
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e.printStackTrace();
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}
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}
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public void analyze() throws FileNotFoundException {
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// 1. 检查并创建日志目录
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ensureLogDirectoryExists();
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// 2. 读取日志文件
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readLogFiles();
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// 3. 等待所有线程完成
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waitForThreads();
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if (logs.isEmpty()) {
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System.out.println("[提示] 没有解析到任何有效日志");
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return;
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}
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// 4. 统计日志数据
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Map<String, Integer> levelStats = countByLevel();
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Map<String, Integer> moduleErrorStats = countModuleErrors();
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List<Log> earliestLogs = getEarliestLogs(3);
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// 5. 上报统计结果
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reportToServer(levelStats, moduleErrorStats, earliestLogs);
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}
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private void ensureLogDirectoryExists() throws FileNotFoundException {
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File logDir = new File(LOG_DIR);
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if (!logDir.exists()) {
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System.out.println("[提示] 日志目录不存在，尝试创建...");
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if (!logDir.mkdirs()) {
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throw new FileNotFoundException("无法创建日志目录: " + LOG_DIR);
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}
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System.out.println("[成功] 已创建日志目录: " + LOG_DIR);
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}
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}
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private void readLogFiles() throws FileNotFoundException {
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File logDir = new File(LOG_DIR);
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File[] logFiles = logDir.listFiles((dir, name) -> name.endsWith(".log"));
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if (logFiles == null || logFiles.length == 0) {
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System.out.println("[提示] 目录中没有找到.log文件");
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return;
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}
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System.out.printf("[信息] 找到 %d 个日志文件\n", logFiles.length);
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for (File file : logFiles) {
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Thread thread = new Thread(() -> parseLogFile(file));
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threads.add(thread);
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thread.start();
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}
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}
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private void waitForThreads() {
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for (Thread thread : threads) {
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try {
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thread.join();
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} catch (InterruptedException e) {
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System.err.println("[警告] 线程等待被中断");
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Thread.currentThread().interrupt();
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break;
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}
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}
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}
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private void parseLogFile(File file) {
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System.out.printf("[信息] 开始解析文件: %s\n", file.getName());
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try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
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String line;
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int lineNum = 0;
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int successCount = 0;
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while ((line = reader.readLine()) != null) {
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lineNum++;
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try {
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Log log = parseLogLine(line);
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logs.add(log);
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successCount++;
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} catch (NumberFormatException e) {
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System.err.printf("[警告] %s 第 %d 行: 时间戳格式错误\n",
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file.getName(), lineNum);
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} catch (IllegalArgumentException e) {
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System.err.printf("[警告] %s 第 %d 行: 日志格式错误\n",
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file.getName(), lineNum);
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}
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}
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System.out.printf("[成功] 文件 %s 解析完成: 总行数 %d, 成功 %d, 失败 %d\n",
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file.getName(), lineNum, successCount, lineNum - successCount);
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} catch (FileNotFoundException e) {
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System.err.printf("[错误] 文件不存在: %s\n", file.getPath());
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} catch (IOException e) {
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System.err.printf("[错误] 读取文件 %s 失败: %s\n", file.getName(), e.getMessage());
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}
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}
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private Log parseLogLine(String line) throws IllegalArgumentException, NumberFormatException {
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String[] parts = line.split(",", 4);
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if (parts.length != 4) {
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throw new IllegalArgumentException("需要4个字段但找到" + parts.length);
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}
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long timestamp = Long.parseLong(parts[0].trim());
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return new Log(timestamp, parts[1].trim(), parts[2].trim(), parts[3].trim());
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}
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private Map<String, Integer> countByLevel() {
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Map<String, Integer> stats = new HashMap<>();
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synchronized (logs) {
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for (Log log : logs) {
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stats.merge(log.getLevel(), 1, Integer::sum);
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}
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}
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return stats;
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}
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private Map<String, Integer> countModuleErrors() {
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Map<String, Integer> stats = new HashMap<>();
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synchronized (logs) {
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for (Log log : logs) {
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if ("ERROR".equals(log.getLevel())) {
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stats.merge(log.getModule(), 1, Integer::sum);
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}
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}
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}
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return stats;
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}
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private List<Log> getEarliestLogs(int count) {
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List<Log> copy;
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synchronized (logs) {
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copy = new ArrayList<>(logs);
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}
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if (copy.isEmpty()) {
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return Collections.emptyList();
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}
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copy.sort(Comparator.comparingLong(Log::getTimestamp));
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return new ArrayList<>(copy.subList(0, Math.min(count, copy.size())));
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}
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private void reportToServer(Map<String, Integer> levelStats,
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Map<String, Integer> moduleErrorStats,
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List<Log> earliestLogs) {
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final int maxRetries = 3;
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int attempt = 0;
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while (attempt < maxRetries) {
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attempt++;
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try (Socket socket = new Socket()) {
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// 设置连接和读取超时
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socket.connect(new InetSocketAddress(SERVER_HOST, SERVER_PORT), 5000);
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socket.setSoTimeout(10000);
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try (ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
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ObjectInputStream ois = new ObjectInputStream(socket.getInputStream())) {
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// 确保发送的是可序列化的ArrayList
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oos.writeObject(new HashMap<>(levelStats));
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oos.writeObject(new HashMap<>(moduleErrorStats));
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oos.writeObject(new ArrayList<>(earliestLogs));
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oos.flush();
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String response = (String) ois.readObject();
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System.out.println("[成功] 服务器响应: " + response);
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return;
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}
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} catch (ConnectException e) {
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System.err.printf("[错误] 连接失败(尝试 %d/%d): %s\n",
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attempt, maxRetries, e.getMessage());
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if (attempt >= maxRetries) {
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System.err.println("[错误] 达到最大重试次数，放弃连接");
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} else {
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try {
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Thread.sleep(1000 * attempt);
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} catch (InterruptedException ie) {
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Thread.currentThread().interrupt();
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return;
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}
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}
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} catch (SocketTimeoutException e) {
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System.err.println("[错误] 连接或读取超时");
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} catch (EOFException e) {
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System.err.println("[错误] 连接意外中断");
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} catch (UnknownHostException e) {
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System.err.println("[错误] 未知主机: " + SERVER_HOST);
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break;
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} catch (IOException e) {
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System.err.println("[错误] 通信错误: " + e.getMessage());
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break;
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} catch (ClassNotFoundException e) {
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System.err.println("[错误] 协议错误: 收到未知响应类型");
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break;
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}
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}
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}
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}
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