import org.bitcoinj.utils.BlockFileLoader; //导入依赖的package包/类
@Test
public void testFirst100KBlocks() throws Exception {
    NetworkParameters params = MainNetParams.get();
    Context context = new Context(params);
    File blockFile = new File(getClass().getResource("first-100k-blocks.dat").getFile());
    BlockFileLoader loader = new BlockFileLoader(params, Arrays.asList(blockFile));
    
    store = createStore(params, 10);
    resetStore(store);
    chain = new FullPrunedBlockChain(context, store);
    for (Block block : loader)
        chain.add(block);
    try {
        store.close();
    } catch (Exception e) {}
}
 

import org.bitcoinj.utils.BlockFileLoader; //导入依赖的package包/类
@Test
public void testFirst100KBlocks() throws Exception {
    NetworkParameters params = MainNetParams.get();
    File blockFile = new File(getClass().getResource("first-100k-blocks.dat").getFile());
    BlockFileLoader loader = new BlockFileLoader(params, Arrays.asList(blockFile));
    
    store = createStore(params, 10);
    resetStore(store);
    chain = new FullPrunedBlockChain(params, store);
    for (Block block : loader)
        chain.add(block);
}
 

import org.bitcoinj.utils.BlockFileLoader; //导入依赖的package包/类
public static void main(String[] args) throws BlockStoreException, VerificationException, PrunedException {
    System.out.println("USAGE: BlockImporter (prod|test) (H2|Disk|MemFull|Mem|SPV) [blockStore]");
    System.out.println("       blockStore is required unless type is Mem or MemFull");
    System.out.println("       eg BlockImporter prod H2 /home/user/bitcoinj.h2store");
    System.out.println("       Does full verification if the store supports it");
    Preconditions.checkArgument(args.length == 2 || args.length == 3);
    
    NetworkParameters params;
    if (args[0].equals("test"))
        params = TestNet3Params.get();
    else
        params = MainNetParams.get();
    
    BlockStore store;
    if (args[1].equals("H2")) {
        Preconditions.checkArgument(args.length == 3);
        store = new H2FullPrunedBlockStore(params, args[2], 100);
    } else if (args[1].equals("MemFull")) {
        Preconditions.checkArgument(args.length == 2);
        store = new MemoryFullPrunedBlockStore(params, 100);
    } else if (args[1].equals("Mem")) {
        Preconditions.checkArgument(args.length == 2);
        store = new MemoryBlockStore(params);
    } else if (args[1].equals("SPV")) {
        Preconditions.checkArgument(args.length == 3);
        store = new SPVBlockStore(params, new File(args[2]));
    } else {
        System.err.println("Unknown store " + args[1]);
        return;
    }
    
    AbstractBlockChain chain = null;
    if (store instanceof FullPrunedBlockStore)
        chain = new FullPrunedBlockChain(params, (FullPrunedBlockStore) store);
    else
        chain = new BlockChain(params, store);
    
    BlockFileLoader loader = new BlockFileLoader(params, BlockFileLoader.getReferenceClientBlockFileList());
    
    for (Block block : loader)
        chain.add(block);
}
 

import org.bitcoinj.utils.BlockFileLoader; //导入依赖的package包/类
public void startImport() {

        for (String fileId : new BlockChainFileSupplier(blockChainFolder, addressesFolder)) {
            Path blockFile = Paths.get(blockChainFolder, "blk" + fileId + ".dat");
            Path addressFile = Paths.get(addressesFolder, "addr" + fileId + ".dat");

            System.out.println("Extracting addresses from " + blockFile.getFileName() + " to " + addressFile.getFileName());

            Context.getOrCreate(MainNetParams.get());
            BlockFileLoader blockFileLoader = new BlockFileLoader(Constants.NETWORK_PARAMS, Arrays.asList(blockFile.toFile()));

            AddressFileWriter addressFileWriter = new AddressFileWriter(addressFile);

            StreamSupport
                    .stream(blockFileLoader.spliterator(), false)
                    .flatMap(block -> block.getTransactions().stream())
                    .flatMap(TransactionProcessor::process)
                    .map(ProgressLogger::logProgress)
                    .distinct()
                    .forEach(addressFileWriter::writeLine);

            addressFileWriter.close();

            System.out.println("Import finished " + addressFile.getFileName());

            // TODO Check bloom filter. In case iterate over all address files and remove duplicates???


        }
    }