javascript，我们如何读取带有重音符号的本地文本文件？ [英] javascript, how could we read a local text file with accent letters into it?

问题描述

我有一个疑问，因为我需要读取一个本地文件，并且我一直在研究一些线程，并且在大多数情况下，我看到了各种处理它的方法，

I have one doubt because I need to read a local file and I have been studying some threads, and I have seen various ways to handle it, in most of the cases there is an input file.

我需要直接通过代码加载它。

I would need to load it directly through code.

我研究了这个线程：

如何读取本地文本文件？

我能读懂。

令人惊讶的是，当我尝试拆分行和单词时，它显示： 替换重音字母。

The surprising part was when I tried to split the lines and words, it showed: � replacing accent letters.

我现在拥有的代码是：

myFileReader.js

myFileReader.js

function readTextFile(file) {

    var rawFile = new XMLHttpRequest();
    rawFile.open("GET", file, false);
    rawFile.onreadystatechange = function () {
        if (rawFile.readyState === 4) {
            if (rawFile.status === 200 || rawFile.status == 0) {
                allText = rawFile.responseText;
                console.log('The complete text is', allText);
                let lineArr = intoLines(allText);
                let firstLineWords = intoWords(lineArr[0]);
                let secondLineWords = intoWords(lineArr[1]);

                console.log('Our  first line is: ', lineArr[0]);

                let atlas = {};
                for (let i = 0; i < firstLineWords.length; i++) {
                    console.log(`Our ${i} word in the first line is : ${firstLineWords[i]}`);
                    console.log(`Our ${i} word in the SECOND line is : ${secondLineWords[i]}`);
                    atlas[firstLineWords[i]] = secondLineWords[i];
                }
                console.log('The atlas is: ', atlas);
                let atlasJson = JSON.stringify(atlas);
                console.log('Atlas as json is: ', atlasJson);

                download(atlasJson, 'atlasJson.txt', 'text/plain');
            }
        }
    };
    rawFile.send(null);
}

function download(text, name, type) {

    var a = document.getElementById("a");
    var file = new Blob([text], {type: type});
    a.href = URL.createObjectURL(file);
    a.download = name;
}

function intoLines(text) {
    // splitting all text data into array "\n" is splitting data from each new line
    //and saving each new line as each element*

    var lineArr = text.split('\n');

    //just to check if it works output lineArr[index] as below


    return lineArr;


}

function intoWords(lines) {


    var wordsArr = lines.split('" "');


    return wordsArr;

}

疑问是：怎么可能我们会处理那些带有重音元音的特殊字符吗？

The doubt is: how could we handle those special character which are the vowels with accent?

我问这个问题，因为即使在IDE中，如果我们将该txt文件以UTF-8格式加载，因此我更改为ISO-8859-1并加载良好。

I ask this, because even in the IDE thet interrogation marks appeared if we load the txt in UTF-8, so then I changed to ISO-8859-1 and it loaded well.

我也研究过：

阅读UTF-8使用Javascript从外部文件中提取特殊字符

将特殊字符转换为JavaScript中的HTML

从本地javascript文件中读取本地文本文件？

此外，您能否解释一下是否存在在客户端javascript中加载文件的更短方法。例如，在Java中，有FileReader / FileWriter / BufferedWriter。

谢谢您的帮助！

推荐答案

听起来文件是用ISO-8859-1（或可能是非常相似的Windows-1252）编码的。

It sounds like the file is encoded with ISO-8859-1 (or possibly the very-similar Windows-1252).

没有BOM

我只能看到的解决方案是：

The only solutions I can see are:

1. 使用（本地）服务器，并使其返回HTTP Content-Type 标头，其编码被标识为字符集，例如 Content-Type：文本/纯文本； encoding = ISO-8859-1

1. Use a (local) server and have it return the HTTP Content-Type header with the encoding identified as a charset, e.g. Content-Type: text/plain; encoding=ISO-8859-1

请改用UTF-8（例如，以ISO-8859在编辑器中打开文件-1，然后将其另存为UTF-8），因为这是默认编码对于XHR响应机构。

Use UTF-8 instead (e.g., open the file in an editor as ISO-8859-1, then save it as UTF-8 instead), as that's the default encoding for XHR response bodies.

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