JAVA 多執行緒處理大資料LIST
阿新 • • 發佈:2019-02-01
package com.sinosoft.audit;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;
import com.sinosoft.lis.pubfun.MMap;
import com.sinosoft.lis.pubfun.PubFun;
import com.sinosoft.lis.pubfun.PubSubmit;
import com.sinosoft.utility.VData;
public class FJTest {
private List<String> list;
public static void main(String[] args) {
new FJTest().init();
}
private void init(){
//模擬初始化1W條資料
list = new ArrayList<String>();
/*MMap map = new MMap();
VData mVDate = new VData();*/
for (int i = 0; i < 10000; i++) {
list.add(i + "");
/* System.out.println(" shuzi:"+list.get(i));
map.put(" insert into testName (id,name) values('"+list.get(i)+"','"+list.get(i)+"')", "INSERT");
*/
//直接插入不用執行緒用2分半
}
/* mVDate.clear();
mVDate.add(map);
PubSubmit tSubmit = new PubSubmit();
tSubmit.submitData(mVDate, "");*/
int borf = new Date().getMinutes();
System.out.println(new Date().getMinutes());
int count = 300;
int listSize = list.size();
int RunSize = (listSize / count)+1;
CountDownLatch countDownLatch = new CountDownLatch(RunSize);
ThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(RunSize);
List<String> newList = null;
for(int i=0 ; i < RunSize;i++){
if((i+1)==RunSize){
int startIndex = (i*count);;
int endIndex = list.size();
newList =list.subList(startIndex,endIndex);
}else{
int startIndex = i*count;;
int endIndex = (i+1)*count;
newList =list.subList(startIndex,endIndex);
}
ExecupteHp hpRunnable = new ExecupteHp(newList);
executor.execute(hpRunnable);
}
try {
countDownLatch.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
executor.shutdown();
System.out.println(new Date().getMinutes());
System.out.println(new Date().getMinutes() - borf);
}
//累不了
class ExecupteHp implements Runnable{
private List <String> list;
public ExecupteHp (List <String> list){
this.list = list ;
}
MMap map = new MMap();
VData mVDate = new VData();
public void run() {
if(list != null){
for(int i = 0 ; i <list.size();i++ ){
System.out.println(" shuzi:"+list.get(i));
map.put(" insert into testName (id,name) values('"+list.get(i)+"','"+list.get(i)+"')", "INSERT");
}
}
mVDate.clear();
mVDate.add(map);
PubSubmit tSubmit = new PubSubmit();
tSubmit.submitData(mVDate, "");
}
}
}
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;
import com.sinosoft.lis.pubfun.MMap;
import com.sinosoft.lis.pubfun.PubFun;
import com.sinosoft.lis.pubfun.PubSubmit;
import com.sinosoft.utility.VData;
public class FJTest {
private List<String> list;
public static void main(String[] args) {
new FJTest().init();
}
private void init(){
//模擬初始化1W條資料
list = new ArrayList<String>();
/*MMap map = new MMap();
VData mVDate = new VData();*/
for (int i = 0; i < 10000; i++) {
list.add(i + "");
/* System.out.println(" shuzi:"+list.get(i));
map.put(" insert into testName (id,name) values('"+list.get(i)+"','"+list.get(i)+"')", "INSERT");
*/
//直接插入不用執行緒用2分半
}
/* mVDate.clear();
mVDate.add(map);
PubSubmit tSubmit = new PubSubmit();
tSubmit.submitData(mVDate, "");*/
int borf = new Date().getMinutes();
System.out.println(new Date().getMinutes());
int count = 300;
int listSize = list.size();
int RunSize = (listSize / count)+1;
CountDownLatch countDownLatch = new CountDownLatch(RunSize);
ThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(RunSize);
List<String> newList = null;
for(int i=0 ; i < RunSize;i++){
if((i+1)==RunSize){
int startIndex = (i*count);;
int endIndex = list.size();
newList =list.subList(startIndex,endIndex);
}else{
int startIndex = i*count;;
int endIndex = (i+1)*count;
newList =list.subList(startIndex,endIndex);
}
ExecupteHp hpRunnable = new ExecupteHp(newList);
executor.execute(hpRunnable);
}
try {
countDownLatch.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
executor.shutdown();
System.out.println(new Date().getMinutes());
System.out.println(new Date().getMinutes() - borf);
}
//累不了
class ExecupteHp implements Runnable{
private List <String> list;
public ExecupteHp (List <String> list){
this.list = list ;
}
MMap map = new MMap();
VData mVDate = new VData();
public void run() {
if(list != null){
for(int i = 0 ; i <list.size();i++ ){
System.out.println(" shuzi:"+list.get(i));
map.put(" insert into testName (id,name) values('"+list.get(i)+"','"+list.get(i)+"')", "INSERT");
}
}
mVDate.clear();
mVDate.add(map);
PubSubmit tSubmit = new PubSubmit();
tSubmit.submitData(mVDate, "");
}
}
}