Java多線程繼承Thread類詳解第1/2頁(yè)

更新時(shí)間：2016年06月19日 15:46:59 投稿：hebedich

Java多線程的兩種實(shí)現(xiàn)方式：繼承Thread類 & 實(shí)現(xiàn)Runable接口，今天我們來(lái)學(xué)習(xí)下繼承Thread類，希望大家能夠喜歡

調(diào)用方法:

/**
 * 點(diǎn)擊量/月(年)Thread
 */
 public void yearlyClickThread() {
 // 獲取參數(shù)
 String year = getPara("year");
 // 統(tǒng)計(jì)數(shù)據(jù)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");
 // 統(tǒng)計(jì)數(shù)據(jù)集Y
 List<Integer> yList = new ArrayList<Integer>();
 // 統(tǒng)計(jì)線程狀態(tài)
 List<Thread> threadList = new ArrayList<Thread>();
 // 線程狀態(tài)碼
 int threadStatusCode = 0;
 // 計(jì)數(shù)器
 int count = 0;
 // 每月的日志分析
 for (int m = 1; m <= 12; m++) {
 // 收集日期參數(shù)
 List<String> dateList = new ArrayList<String>();
 //
 String date = "";
 // 判斷有多少天
 int days = CalendarUtil.weekForMonth(Integer.valueOf(year), m);
 // 組合日期
 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);
 }
 // 啟動(dòng)線程
 Thread thread = new ReadLogFileThreadByYear(dateList);
 thread.start();
 try {
 // 休眠
 Thread.sleep(1000L);
 } catch (InterruptedException e) {
 e.printStackTrace();
 }
 threadList.add(thread);
 }
 // 獲取線程狀態(tài)
 for (Thread t : threadList) {
 if (t.getState().toString().equals("TERMINATED")) {
 threadStatusCode += 1;
 }
 }
 // 判斷線程是否都執(zhí)行完畢
 if (threadStatusCode == 12) {
 // 接收參數(shù)
 // List<Map<String, Object>> list = ReadLogFileThread.list.subList(0, 12);
 List<Map<String, Object>> list = ReadLogFileThreadByYear.list;
 // 設(shè)置參數(shù)
 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"));
 }

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

線程方法:

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

/**
 * 多線程無(wú)返回值
 * 
 * @author Darker
 *
 */
public class ReadLogFileThreadByYear extends Thread {
 // 日期數(shù)組
 private List<String> clickDate;
 // 共享數(shù)據(jù)
 public static List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
 
 public ReadLogFileThreadByYear(List<String> clickDate) {
 this.clickDate = clickDate;
 }

 /**
 * 讀取點(diǎn)擊日志文件
 * 
 * 例子:article.click.2016-05-20.txt
 * 
 * @return
 */
 public void run() {
 // 接收參數(shù)
 Map<String, Object> map = new HashMap<String, Object>();
 // 利用FileInputStream讀取文件信息
 FileInputStream fis = null;
 // 利用InputStreamReader進(jìn)行轉(zhuǎn)碼
 InputStreamReader reader = null;
 // 利用BufferedReader進(jìn)行緩沖
 BufferedReader bufReader = null;
 // 利用StringBuffer接收文件內(nèi)容容器
 StringBuffer buf = new StringBuffer();
 // 點(diǎn)擊量/月
 int monthClick = 0;
 
 for (int i = 0; i < clickDate.size(); i++) {
 // 獲取文件
 File clickLogFile = new File(ConstantUtil.LOGLOCATION, "article.click."+ clickDate.get(i) + ".txt");
 // 判斷文件是否存在
 if (!clickLogFile.exists() || clickLogFile.isDirectory()) {

 System.err.println(clickDate.get(i) + "的文件不存在...");
 } else {
 try {
  // 節(jié)點(diǎn)流
  fis = new FileInputStream(clickLogFile);
  // 轉(zhuǎn)換流
  reader = new InputStreamReader(fis, "utf-8");
  // 處理流
  bufReader = new BufferedReader(reader);
  // 計(jì)數(shù)器
  int count = 0;
  // 按行讀取
  String line = "";
  // 讀取文件
  while ((line = bufReader.readLine()) != null) {
  count++;
  // 接收數(shù)據(jù)
  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 {
  // 關(guān)閉流
  try {
  bufReader.close();
  reader.close();
  fis.close();
  } catch (IOException e) {
  e.printStackTrace();
  }
 }
 }
 }
 map.put("month", clickDate.get(0).subSequence(5, 7));
 if(monthClick==0){
 map.put("clickCount", 0);
 }else{
 map.put("clickCount", monthClick);
 }
 
 // map.put("clickContent", buf.toString());
 list.add(map);

 }
 
}

12 下一頁(yè)閱讀全文

您可能感興趣的文章: