如何在react-native中使用fetch发布multipart/formdata? [英] How to post multipart/formdata using fetch in react-native?
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问题描述
我想这样发布表单数据.
i want to post Form Data like that.
我应该为发送图像文件数据做些什么?
what should i prepare for sending image file data?
我有Uri,类型,文件名,大小.
i have Uri, type, filename, size.
然后将使用访存.
标题中的内容类型为'multipart/formdata'
Content-type in header is 'multipart/formdata'
感谢您的帮助
推荐答案
您应该具有上传功能,该功能应如下所示:
You should have an upload function, which should look like this:
upload(url, data) {
let options = {
headers: {
'Content-Type': 'multipart/form-data'
},
method: 'POST'
};
options.body = new FormData();
for (let key in data) {
options.body.append(key, data[key]);
}
return fetch(requestUrl, options)
.then(response => {
return response.json()
.then(responseJson => {
//You put some checks here
return responseJson;
});
});
}
您这样称呼,发送图像Blob路径:
And you call it this way, sending the image blob path:
this.upload('http://exampleurl.com/someApiCall', {
file: {
uri: image.path,
type: image.mime,
name: image.name,
}
}).then(r => {
//do something with `r`
});
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