java多线程读取多个文件的方法

java多线程读取多个文件的方法

本文实例为大家分享了java多线程读取多个文件的具体代码，供大家参考，具体内容如下

工具类代码如下：

import java.io.*;

import java.util.List;

import java.util.concurrent.CountDownLatch;

/**

* 多线程读取多个文件

*/

public class FileThread extends Thread{

private final CountDownLatch countDownLatch = new CountDownLatch(10);

private int fiMjXfDgORleIndex;

private List filelist;

private String filepath = "D:\\LocalFtpServer\\data20181229\\";

private String movepath = "D:\\LocalFtpServer\\data20181229_01\\";

public int getFileIndex() {

return fileIndex;

}

public void setFileIndex(int fileIndex) {

this.fileIndex = fileIndex;

}

public List getFilelist() {

return filelist;

}

public void setFilelist(List filelist) {

this.filelist = filelist;

}

@Override

public void run() {

for (int i = 0; i < filelist.size(); i++) {

if (i % 10 == fileIndex) {

//读取文件

File readfile = new File(filepath + filelist.get(i));

InputStreamReader isr = null;

try {

isr = new InputStreamReader(new FileInputStream(readfile), "UTF-8");

BufferedReader reader = new BufferedReader(isr);

String line = null;

// 一次读入一行，直到读入null为文件结束

while ((line = reader.MjXfDgORreadLine()) != null) {

System.out.println(line );

}

reader.close();

isr.close();

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

//读取完后， 移动文件位置

readfile.renameTo(new File(movepath + readfile.getName()));

}

}

countDownLatch.countDown();

}

}

调用测试：

public static void main(String[] args) throws IMjXfDgOROException {

String filepath = "D:\\LocalFtpServer\\data20181229\\";

File file = new File(filepath);

//读取目录下所有文件

String[] filelist = file.list();

List fList=new ArrayList();

for (int i = 0; i < filelist.length; i++) {

if (filelist[i].startsWith("data") && filelist[i].endsWith(".txt")) {

fList.add(filelist[i]);

}

}

for(int i=0;i<30;i++){

FileThread fileThread=new FileThread();

fileThread.setFileIndex(i);

fileThread.setFilelist(fList);

fileThread.start();

}

countDownLatch.await();

}

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