node . js zlib . brotlidecompress()方法

原文:https://www . geesforgeks . org/node-js-zlib-brotlidecompress-method/

zlib.brotliDecompress()方法是 zlib 模块的内置应用程序编程接口，用于使用 brotliDecompress 解压缩一大块数据。

语法:

zlib.brotliDecompress( buffer, options, callback )

参数:该方法接受三个参数，如上所述，如下所述:

  • Buffer: it can be buffer, type, data view, array buffer and string type. *option: is an optional parameter for saving zlib options. Callback: It holds the callback function.*

*返回值:*解压后返回数据块。

以下示例说明了在 Node.js 中使用 zlib.brotliDecompress()方法:

*例 1:*

**```js // Node.js program to demonstrate the      // brotliDecompress() method

// Including zlib module const zlib = require("zlib");

// Declaring input and assigning // it a value string var input = "Computer Science";

// Calling brotliCompress method zlib.brotliCompress(input, (err, buffer) => {

// Calling brotliDecompress     zlib.brotliDecompress(buffer, (err, buffer) => {         console.log(buffer.toString('base64'));     }); }); ```**

*输出:*

Q29tcHV0ZXIgU2NpZW5jZQ==

*例 2:*

**```js // Node.js program to demonstrate the      // brotliDecompress() method

// Including zlib module const zlib = require("zlib");

// Declaring input and assigning // it a value string var input = "Computer Science";

// Calling brotliCompress method zlib.brotliCompress(input, (err, buffer) => {

// Calling brotliDecompress     zlib.brotliDecompress(buffer, (err, buffer) => {         console.log(buffer.toString('bas64'));     }); }); ```**

*输出:*

buffer.js:631  throw new ERR_UNKNOWN_ENCODING(encoding);  ^

TypeError [ERR_UNKNOWN_ENCODING]: Unknown encoding: bas64
    at stringSlice (buffer.js:631:9)    at Buffer.toString (buffer.js:667:10)
    at BrotliDecompress.zlib.brotliDecompress [as cb] 
    (/home/runner/BeautifulMiserlySourcecode/index.js:18:28)
    at BrotliDecompress.zlibBufferOnEnd (zlib.js:133:10)
    at BrotliDecompress.emit (events.js:203:15)
    at BrotliDecompress.EventEmitter.emit (domain.js:448:20)
    at endReadableNT (_stream_readable.js:1143:12)
    at process._tickCallback (internal/process/next_tick.js:63:19)?

在这里，编码时发生错误，因此会引发错误。

*参考:*T2【https://nodejs . org/API/zlib . html # zlib _ zlib _ brotlidecompress _ buffer _ options _ callback

版权属于：月萌API www.moonapi.com，转载请注明出处

本文链接：https://www.moonapi.com/news/9961.html