[英]Set Custom Validation for File Upload in angular Form is not working as expected
[英]Angular multiple file upload not working as expected
当我尝试在表单数据中上传多个文件时,api 返回一个空的 arrays。(与邮递员合作)
你能告诉我为什么吗? 谢谢!
这是我的代码:
添加文件 function(保存文件、文件名和客户端预览):
addFile(event: any) {
console.log(event.target.files)
Array.from(event.target.files).forEach((fileData: any) => {
let fileName = fileData.name;
const reader = new FileReader();
reader.addEventListener(
'load',
() => {
// convert image file to base64 string
this.draftImages.push({
preview: reader.result,
file: fileData,
fileName: fileName
})
},
false
);
if (fileData) {
reader.readAsDataURL(fileData);
}
});
}
上传文件function到api:
let formData = new FormData()
let files: any = []
this.draftImages.forEach((fileData: any) => {
files.push(fileData.file)
console.log(fileData.file);
})
formData.append("file", files)
this.http.post<any>("http://localhost:3000/chat/message/dm/uploadImg", formData).subscribe((result) => {
console.log(result, formData)
})
修复。
变了
this.draftImages.forEach((fileData: any) => {
files.push(fileData.file)
console.log(fileData.file);
})
到
formData.append("file", fileData.file, fileData.name)
console.log(fileData.file);
})
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