这是我的烧瓶测试路线,应该给出图像:
@app.route('/marknext', methods=['GET', 'POST'])
def marknext():
id = request.form.get("ID")
if request.method == 'POST':
return "OK"
else:
image_file_path = '/home/cnd/contrib/python/input/ChinaSet_AllFiles/CXR_png/CHNCXR_0370_1.png'
# res = make_response(send_file(image_file_path, add_etags=False, cache_timeout=0))
# return res
return send_file(image_file_path, add_etags=False, cache_timeout=0, attachment_filename='CHNCXR_0370_1.png')
在客户端,我正在尝试使用axios获取该文件并将其放入<img>
axios.get('/marknext', {
params: {
ID: 0
}
})
.then(function (response) {
var reader = new window.FileReader();
reader.readAsDataURL(response.data);
reader.onload = function() {
var imageDataUrl = reader.result;
$("#selected-image").attr("src", imageDataUrl)
}
})
.catch(function (error) {
console.log(error);
})
.then(function () {
// always executed
});
而且我在控制台上遇到了错误:
TypeError: Failed to execute 'readAsDataURL' on 'FileReader': parameter 1 is not of type 'Blob'.
at mark.js:14
我在做什么错了?
答案 0 :(得分:2)
使用Axios的经验不足,但是有些Google搜索使我想到了ReactJS subreddit中提出的类似问题。似乎您需要使用Blob
初始化response.data
,然后将其传递给readAsDataURL()
而不是直接传递给response
。
.then(function (response) {
var responseBlob = new Blob([response.data], {type:"image/png"});
var reader = new window.FileReader();
reader.readAsDataURL(responseBlob);
reader.onload = function() {
var imageDataUrl = reader.result;
$("#selected-image").attr("src", imageDataUrl)
}
})