Java 遍历并导入GridFS/MongoDB

我希望整合我写的两个程序。第一个是I/O流，它遍历一个目录并列出每个文件夹中的所有文件。第二种方法使用MongoDB的Java驱动程序，并允许输入文件（在本例中为图像）。我想将两者结合起来，以便在遍历目录时，文件在遇到它们时被上传。感谢您的帮助。以下是我的两个代码源：

流：

import java.io.IOException;
import java.nio.file.DirectoryIteratorException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class StreamTest {
public static void main(String[] args) {
    StreamTest streamTest = new StreamTest();
    Path readyPath = Paths.get("Ready");
    try {
        List<Path> sourceList = streamTest.listSourceFiles(readyPath);
        for (Path p : sourceList) {
            if (Files.isDirectory(p)) {
                streamTest.processFolder(p);
            }
        }
        System.out.println(sourceList);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}
private void processFolder(Path p) throws IOException {
    List<Path> sourceList = listSourceFiles(p);
    Collections.sort(sourceList, new Comparator<Path>() {
        @Override
        public int compare(Path path1, Path path2) {
            if (path1.endsWith(".csv")) {
                return 1;
            } else {
                return -1;
            }
        }
    });
    System.out.println("ID = " + Math.random());
    System.out.println(sourceList);
}
List<Path> listSourceFiles(Path dir) throws IOException {
    List<Path> result = new ArrayList<>();
    try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir, "*")) {
        for (Path entry : stream) {
            result.add(entry);
        }
    } catch (DirectoryIteratorException ex) {
        throw ex.getCause();
    }
    return result;
  }
 }

将此连接到“映像驱动程序”，这是连接和插入Mongo的地方

    private void processImages(List<Path> sourceList) throws IOException { 
    //create same method but for CSV without using GridFS
    for (Path file : sourceList) {
        if (file.getFileName().toString().endsWith(".png")) {

    System.out.println(ImageDriver.uploadImage(file.toAbsolutePath()));

private void processImages（List sourceList）抛出IOException{
//创建相同的方法，但不使用GridFS为CSV创建
用于（路径文件：sourceList）{
if（file.getFileName（）.toString（）.endsWith（“.png”））{
System.out.println（ImageDriver.uploadImage（file.toabsolutionpath（））；

    private void processImages(List<Path> sourceList) throws IOException { 
    //create same method but for CSV without using GridFS
    for (Path file : sourceList) {
        if (file.getFileName().toString().endsWith(".png")) {

    System.out.println(ImageDriver.uploadImage(file.toAbsolutePath()));