您可能需要收集List<FileInfo>到map中，然后将其转换为List<List<FileInfo>>。这可以使用Collectors.collectingAndThen来实现，首先您可以应用Collectors.groupingBy，然后客户将map转换为List<List<FileInfo>>。
在下面的分组示例中，文件大小被加上并除以FILE_GROUP_LIMIT，商用于分组。
希望能帮上忙。

import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
import java.util.function.Function;
import java.util.stream.Collectors;

public class FileInfoProcessor {

  private static Double FILE_GROUP_LIMIT = 200D;

  public static void main(String[] args) throws Exception {
    FileInfoProcessor processor = new FileInfoProcessor();
    List<FileInfo> files = List.of(new FileInfo("A", 100l, "Active"),
        new FileInfo("B", 100l, "Active"),
        new FileInfo("C", 100l, "Active"),
        new FileInfo("D", 100l, "Active"));
    List<List<FileInfo>> finalList = processor.processFiles(files);
    System.out.println(finalList);
  }

  private List<List<FileInfo>> processFiles(List<FileInfo> files) {
    return files
        .stream()
        .collect(
            Collectors.collectingAndThen(
                Collectors.groupingBy(fileInfoFunction(), Collectors.toList()), // This will convert the List<FileInfo> to Map<String, List<FileInfo>>
                map -> map.entrySet().stream().map(entry -> entry.getValue()).collect(Collectors.toList()))); // This will convert Map<String, List<FileInfo>> to List<List<FileInfo>>
  }

  private Function<FileInfo, String> fileInfoFunction() {
    final AtomicLong fileSizeAccumulator = new AtomicLong(0l);
    return (FileInfo file) -> {
      return String.valueOf(Math.ceil((double)fileSizeAccumulator.addAndGet(file.fileSize) / FILE_GROUP_LIMIT)); // This will return the quotient by which the map can be created grouped.
    };
  }

  static class FileInfo {
    private String filePath;
    private Long fileSize;
    private String status;

    public FileInfo(final String filePath, final Long fileSize, final String status) {
      this.filePath = filePath;
      this.fileSize = fileSize;
      this.status = status;
    }

    public String getFilePath() {
      return filePath;
    }

    public void setFilePath(final String filePath) {
      this.filePath = filePath;
    }

    public Long getFileSize() {
      return fileSize;
    }

    public void setFileSize(final Long fileSize) {
      this.fileSize = fileSize;
    }

    public String getStatus() {
      return status;
    }

    public void setStatus(final String status) {
      this.status = status;
    }

    @Override
    public String toString() {
      return "FileInfo{" + "filePath='" + filePath + '\'' + ", fileSize=" + fileSize + ", status='"
          + status + '\'' + '}';
    }
  }

}