android：处理压缩字符串的快速方法

发布于 2024-11-07 07:43:52 字数 769 浏览 5 评论 0原文

我有许多压缩字符串（每个1.5M）存储在一个文件中。我需要读出它们，并对它们进行一些计算。基本上，这就是我所做的：

public static Object fetchRSFB(File inFile) {
    FileInputStream fis = null;
    ObjectInputStream ois = null;
    GZIPInputStream gs = null;
    Object result = null;
    try {
        fis = new FileInputStream(inFile);
        gs = new GZIPInputStream(fis);
        ois = new ObjectInputStream(gs);
        MyBWT.rankArray = (int[]) ois.readObject();
        String str= (String) ois.readObject();
        //do something with the string

唯一的问题是，代码的性能一般来说相当慢，所以我在考虑 2 个选项：

使用 NIO 将压缩文件映射到内存中，并在内存压缩文件（我听说这可能可以实现，但我不知道是不是真的）
我可以不存储对象，而是存储文本的二进制压缩版本，然后读取文本，我听说它可能比 ObjectInputStream 快。

有人知道实现上述选项的方法吗？或者有更好的方法吗，非常感谢。

原文

I have a number of compressed String(1.5M each) stored in a file. I need to read them out, and do some computation on them. Basically, here is what I did:

public static Object fetchRSFB(File inFile) {
    FileInputStream fis = null;
    ObjectInputStream ois = null;
    GZIPInputStream gs = null;
    Object result = null;
    try {
        fis = new FileInputStream(inFile);
        gs = new GZIPInputStream(fis);
        ois = new ObjectInputStream(gs);
        MyBWT.rankArray = (int[]) ois.readObject();
        String str= (String) ois.readObject();
        //do something with the string

The only problem is, the performance of the code is quite slow in general, so I am thinking 2 options:

to use NIO to map the compressed file into memory, and do the above on the memory compressed file(I heard that this may be achievable, but I have no idea if it really is)
Instead of storing objects, I could just store binary compressed version of the text and then read the text, I heard that it may be fast then ObjectInputStream.

Anyone knows a way of achieving the above options? or is there a better way, thanks a lot.

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