Node.jsStringDecoder

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Node.js StringDecoder用于将缓冲区解码为字符串。它类似于buffer.toString()，但为UTF提供了额外的支持。

const StringDecoder = require('string_decoder').StringDecoder;

StringDecoder 方法

StringDecoder类只有两个方法。

方法	描述
decoder.write(buffer)	它用于返回解码后的字符串。
decoder.end()	如果缓冲区中有剩余字节，则用于返回尾随字节。

StringDecoder 示例

让无涯教程来看一个Node.js StringDecoder的简单示例。

文件:stringdecoder_example1.js.

复制代码

const StringDecoder = require('string_decoder').StringDecoder;
const decoder = new StringDecoder('utf8');

const buf1 = new Buffer('this is a test');
console.log(decoder.write(buf1));//prints: this is a test

const buf2 = new Buffer('7468697320697320612074c3a97374', 'hex');
console.log(decoder.write(buf2));//prints: this is a test

const buf3 = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]);
console.log(decoder.write(buf3));//prints: buffer