java解析log日记

java解析log日志

自己写的一段日志解析的java程序，比较乱，先记录（小文件）：

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

import org.json.JSONObject;

public class ParseLog {

	private static String VIEWSTRING = "正在查看新闻:";
	private static String APPLYSTRING = "写过的新闻";
	private static String SEARCHSTRING = "正在搜索新闻：";
	private static String USERTAG = "用户：";

	/**
	 * 用戶名，用戶行為，以key-value方式存储
	 * 用户行为 以json方式存储
	 */
	public static void readFileByLines(String fileName) {
		File file = new File(fileName);
		BufferedReader reader = null;
		try {
			System.out.println("以行为单位读取文件内容，一次读一整行：");
			InputStreamReader isr = new InputStreamReader(new FileInputStream(file), "UTF-8");
			reader = new BufferedReader(isr);
			String tempString = null;
			Map<String, Object> map = new HashMap<String, Object>();
			// 一次读入一行，直到读入null为文件结束
			while ((tempString = reader.readLine()) != null) {
				if (tempString.contains(VIEWSTRING)) {
					int userindex = tempString.indexOf(USERTAG);
					String username = tempString.substring(userindex + 3, tempString.indexOf(",", userindex));
					int done = tempString.indexOf(VIEWSTRING);
					String ewId = tempString.substring(done + VIEWSTRING.length());
					if (username != null && username != "") {
						try {
							if (map.containsKey(username)) {
								JSONObject json = (JSONObject) map.get(username);
								if (json.has("view")) {
									if (!json.get("view").toString().contains(ewId)) {
										json.put("view", json.get("view") + "," + ewId);
									}
								} else {
									json.put("view", ewId);
								}
								map.put(username, json);
							} else {
								JSONObject json = new JSONObject();
								json.put("view", ewId);
								map.put(username, json);
							}
						} catch (Exception e) {
							e.printStackTrace();
						}
					}
				}

				if (tempString.contains(APPLYSTRING)) {
					int userindex = tempString.indexOf(USERTAG);
					String username = tempString.substring(userindex + 3, tempString.indexOf(",", userindex));
					int done = tempString.indexOf(APPLYSTRING);
					String ewId = tempString.substring(done + APPLYSTRING.length());

					if (username != null && username != "") {
						try {
							if (map.containsKey(username)) {
								JSONObject json = (JSONObject) map.get(username);
								if (json.has("apply")) {
									if (!json.get("apply").toString().contains(ewId)) {
										json.put("apply", json.get("apply") + "," + ewId);
									}
								} else {
									json.put("apply", ewId);
								}
								map.put(username, json);
							} else {
								JSONObject json = new JSONObject();
								json.put("apply", ewId);
								map.put(username, json);
							}
						} catch (Exception e) {
							e.printStackTrace();
						}
					}
				}

				if (tempString.contains(SEARCHSTRING)) {
					int userindex = tempString.indexOf(USERTAG);
					String username = tempString.substring(userindex + 3, tempString.indexOf(",", userindex));
					int done = tempString.indexOf(SEARCHSTRING);
					String keyword = URLDecoder.decode(tempString.substring(done + SEARCHSTRING.length()), "utf-8");

					if (username != null && username != "") {
						try {
							if (map.containsKey(username)) {
								JSONObject json = (JSONObject) map.get(username);
								if (json.has("search")) {
									if (!json.get("search").toString().contains(keyword.trim())) {
										json.put("search", json.get("search") + "," + keyword.trim());
									}
								} else {
									json.put("search", keyword.trim());
								}
								map.put(username, json);
							} else {
								JSONObject json = new JSONObject();
								json.put("search", keyword.trim());
								map.put(username, json);
							}
						} catch (Exception e) {
							e.printStackTrace();
						}
					}
				}
			}
			reader.close();
			Iterator<Entry<String, Object>> it = map.entrySet().iterator();
			while (it.hasNext()) {
				Entry<String, Object> entry = it.next();
				System.out.println(entry.getKey() + "-----------" + entry.getValue());
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (reader != null) {
				try {
					reader.close();
				} catch (IOException e1) {
				}
			}
		}
	}

	public static void main(String[] args) {
		ParseLog.readFileByLines("C:\\Users\\lyh\\Desktop\\log");
	}

}