多线程之实现Callable接口

调用方法:

/**
	 * 点击量/月(年)Callable
	 */
	public void yearlyClickCallable() {
		// 获取参数
		String year = getPara("year");
		// 统计数据集X
		List<String> xList = new ArrayList<String>();
		xList.add("January");
		xList.add("February");
		xList.add("March");
		xList.add("April");
		xList.add("May");
		xList.add("June");
		xList.add("July");
		xList.add("August");
		xList.add("September");
		xList.add("October");
		xList.add("November");
		xList.add("December");
		// 统计数据集Y
		List<Integer> yList = new ArrayList<Integer>();
		// 接收线程值
		List<Future<List<Map<String, Object>>>> futureList = new ArrayList<Future<List<Map<String, Object>>>>();
		// 计数器
		int count = 0;
		// 创建一个线程池(决定开启几个线程)
		ExecutorService pool = Executors.newCachedThreadPool();
		// 每月的日志分析
		for (int m = 1; m <= 12; m++) {
			// 收集日期参数
			List<String> dateList = new ArrayList<String>();
			//
			String date = "";
			// 判断有多少天
			int days = CalendarUtil.weekForMonth(Integer.valueOf(year), m);
			// 组合日期
			for (int i = 1; i <= days; i++) {

				if (i <= 9) {

					if (m <= 9) {
						date = year + "-0" + m + "-0" + i;
					} else {
						date = year + "-" + m + "-0" + i;
					}
				} else {
					if (m <= 9) {
						date = year + "-0" + m + "-" + i;
					} else {
						date = year + "-" + m + "-" + i;
					}
				}
				dateList.add(date);
			}
			// 启动
			Future<List<Map<String, Object>>> future = pool.submit(new ReadLogFileCallableByYear(dateList));

			futureList.add(future);
		}
		// 关闭线程池
		pool.shutdown();
		// 接收结果集
		for (Future<List<Map<String, Object>>> future : futureList) {
			try {
				// 接收参数
				List<Map<String, Object>> list = future.get(1, TimeUnit.SECONDS);

				// 设置参数
				for (int p = 0; p < list.size(); p++) {

					count += (int) list.get(p).get("clickCount");

					if (list.get(p).get("month").equals("01")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("02")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("03")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("04")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("05")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("06")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("07")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("08")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("09")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("10")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("11")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					} else if (list.get(p).get("month").equals("12")) {
						yList.add((Integer) list.get(p).get("clickCount"));
					}

				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}

		setAttr("totalCount", count);
		setAttr("x", xList);
		setAttr("y", yList);
		renderJson();
	}

多线程方法:

package com.ninemax.util.loganalysis;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;

import com.ninemax.util.loganalysis.tool.ConstantUtil;

/**
 * 多线程有返回值
 * 
 * @author Darker
 * 
 */
public class ReadLogFileCallableByYear implements Callable<List<Map<String, Object>>> {
	// 日期数组
	private List<String> clickDate;
	// 返回结果集
	public List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();

	public ReadLogFileCallableByYear(List<String> clickDate) {
		this.clickDate = clickDate;
	}

	@Override
	public List<Map<String, Object>> call() throws Exception {
		// 接收参数
		Map<String, Object> map = new HashMap<String, Object>();
		// 利用FileInputStream读取文件信息
		FileInputStream fis = null;
		// 利用InputStreamReader进行转码
		InputStreamReader reader = null;
		// 利用BufferedReader进行缓冲
		BufferedReader bufReader = null;
		// 利用StringBuffer接收文件内容容器
		StringBuffer buf = new StringBuffer();
		// 点击量/月
		int monthClick = 0;

		for (int i = 0; i < clickDate.size(); i++) {
			// 获取文件
			File clickLogFile = new File(ConstantUtil.LOGLOCATION, "article.click."+ clickDate.get(i) + ".txt");
			// 判断文件是否存在
			if (!clickLogFile.exists() || clickLogFile.isDirectory()) {

				System.err.println(clickDate.get(i) + "的文件不存在...");
				
				map.put("month", clickDate.get(i).substring(5, 7));
				map.put("clickCount", 0);
				list.add(map);
				
				return list;
			} else {
				try {
					// 节点流
					fis = new FileInputStream(clickLogFile);
					// 转换流
					reader = new InputStreamReader(fis, "utf-8");
					// 处理流
					bufReader = new BufferedReader(reader);
					// 计数器
					int count = 0;
					// 按行读取
					String line = "";
					// 读取文件
					while ((line = bufReader.readLine()) != null) {
						// 计数
						count++;
						// 接收数据
						if (!line.equals(null) && !line.equals("")) {

							buf.append(line + "\n");
						}
					}
					if (count == 0) {
						count = 0;
					} else {
						count = count - 1;
					}
					monthClick += count;
				} catch (Exception e) {
					e.printStackTrace();
				} finally {
					// 关闭流
					try {
						bufReader.close();
						reader.close();
						fis.close();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
			}
		}
		// 结果集
		map.put("month", clickDate.get(0).substring(5, 7));
		
		if (monthClick == 0) {
			map.put("clickCount", 0);
		} else {
			map.put("clickCount", monthClick);
		}

		list.add(map);

		return list;
	}

}

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