Javascript 将 Json 对象导出到文本文件
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Export a Json object to a text File
提问by Albeis
I'm trying to write a Json object (JsonExport) and I'd like to write its content into a text file.
我正在尝试编写一个 Json 对象（JsonExport），并且我想将其内容写入一个文本文件中。
I'm using max4live to export data from Audio DAW to Json in order to export to a server, but after that I would like to see the whole Json Object in a text file:
我正在使用 max4live 将数据从音频 DAW 导出到 Json，以便导出到服务器，但之后我想在文本文件中查看整个 Json 对象：
var txtFile = "test.txt";
var file = new File(txtFile);
var str = JSON.stringify(JsonExport);
file.open("write"); // open file with write access
file.write(str);
file.close();
The compiler runs with no error, but i can not get the text file. I have used as well path to some of my directories and nothing.
编译器运行没有错误，但我无法获取文本文件。我也使用了一些目录的路径，但什么也没有。
Any idea what's happening? Thanks
知道发生了什么吗？谢谢
采纳答案by Albeis
Finally I got it! It worked by changing few parameters like this:
最后我明白了！它通过改变几个参数来工作：
var txtFile = "/tmp/test.txt";
var file = new File(txtFile,"write");
var str = JSON.stringify(JsonExport);
log("opening file...");
file.open();
log("writing file..");
file.writeline(str);
file.close();
Path to my directories not allowed, so i had to save it on /tmp directory. Thanks to all!
不允许我的目录路径，所以我不得不将它保存在 /tmp 目录中。谢谢大家！
回答by CBarr
If you have access to an already existing file, just link to it. You can specify what the downloaded file name will be like this:
如果您有权访问已存在的文件，只需链接到该文件即可。您可以指定下载的文件名，如下所示：
<a href="path/to/file.txt" download="example.json">
Download as JSON
</a>
If needed, you could also write out the dataURI as well
如果需要，您也可以写出 dataURI
//Get the file contents
var txtFile = "test.txt";
var file = new File(txtFile);
var str = JSON.stringify(JsonExport);
//Save the file contents as a DataURI
var dataUri = 'data:application/json;charset=utf-8,'+ encodeURIComponent(str);
//Write it as the href for the link
var link = document.getElementById('link').href = dataUri;
Then just give the link an ID and a default href
然后只需给链接一个 ID 和一个默认值 href
<a href="#" id="link" download="example.json">
Download as JSON
</a>
回答by NutCracker
I know this question already has accepted answer but I think my answer could help someone. So, the problem is to export Json data to a text file. Once you execute the following code, file will be downloaded by the browser.
我知道这个问题已经接受了答案，但我认为我的答案可以帮助某人。所以，问题是将 Json 数据导出到文本文件。执行以下代码后，浏览器将下载文件。
const filename = 'data.json';
const jsonStr = JSON.stringify(JsonExport);
let element = document.createElement('a');
element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(jsonStr));
element.setAttribute('download', filename);
element.style.display = 'none';
document.body.appendChild(element);
element.click();
document.body.removeChild(element);
