想用xmlhttprequest formdata 来上传文件。
在web上可以成功。
android上就不行
提示formdata not defined.
难道还要另写一套代码用java去上传？
提供给下demo，我们验证下，应该是可以的才对。
确实不行
我已经改了实现方式 。
按照form-data的格式自己把所有请求体组装为bytearray来上传 成功了。
代码大概这样。
`
//Binary 是 string|ArrayBuffer|Blob|Uint8Array
private async post(xhr: XMLHttpRequest) {
let boundary = `Boundary_${Math.floor(Math.random() * 10000000)}`
xhr.setRequestHeader("Content-Type", `multipart/form-data; boundary=${boundary}`)
let datas: Binary[] = []
for (let v of this.req.blobs) {
let type = v.type || "application/octstream"
let filename = v.filename || "upload"
datas.push(`--${boundary}\r\n`)
datas.push(`Content-Disposition: form-data; name="${v.key}"; filename="${filename}"\r\n`)
datas.push(`Content-Type: ${type}\r\n`)
datas.push("\r\n")
datas.push(v.data)
datas.push("\r\n")
}
datas.push(`--${boundary}--`)
if (cc.sys.isBrowser) {
xhr.send(new Blob(datas))
} else {
let bytes: Array<number>[] = []
for (let v of datas) {
if (typeof v == "string") {
bytes.push(sputils.string2utf8(v))
} else if (v instanceof ArrayBuffer) {
bytes.push(sputils.arraybuffer2array(v))
} else if (v instanceof Uint8Array) {
let array: number[] = []
for (let i = 0; i < v.length; i++) {
array.push(v[i])
}
bytes.push(array)
}
}
let data: number[] = []
for (let v of bytes) {
for (let n of v) {
data.push(n)
}
}
let ab: ArrayBuffer = sputils.array2arraybuffer(data)
xhr.send(ab)
}
}
`
另外原生平台好像也不支持FileReader.
方法调用没有报错，但是onloaded等一些回调方法一直收不到回调。
ios 提示ERROR: ReferenceError: Can’t find variable: FormData, location: src/project.dev.js:19611:32
你好 我也碰到了同样的问题 在ios平台 let formData = new FormData(); 报错 信息如下
ERROR: ReferenceError: Can’t find variable: FormData, location: src/project.js:64661:21
STACK:
request@src/project.js:64661:21
src/project.js:62632:24
src/project.js:587:73
invoke@src/cocos2d-jsb.js:28927:33
global code@(no filename):1:13
你好 请问后来是怎么解决的？
解决了吗？怎么沉了？
no multipart boundary param in Content-Type，您好，我们在使用multipart/form-data做post的时候出现了这个错误，但加了boundary后又不知道怎么组织FormData数据，请大佬指点下
sputils 能分享一下吗，报错了
UploadImageTest.zip (1.3 MB)
export class Form {
//有 FormData
private formData: FormData;
//无 FormData
private boundary: Uint8Array;
public contentType: string;
private data: Array<string | Uint8Array>;
public constructor() {
if (window.FormData) {
this.formData = new FormData();
} else {
const boundary = "------------------------------7m" + (0x100000000000 + Math.floor(Math.random() * 0x100000000000)).toString(16).substr(1);
this.contentType = "multipart/form-data; boundary=" + boundary;
this.boundary = this.cs2u8s("--" + boundary);
this.data = [];
}
}
private cs2u8s(cs: string): Uint8Array {
let i: number = cs.length;
const u8s = new Uint8Array(i);
while (i--) {
u8s[i] = cs.charCodeAt(i);
}
return u8s;
}
private str2u8s(str: string): Uint8Array {
return this.cs2u8s(unescape(encodeURIComponent(str)));
}
public append(key: string, value: Uint8Array | string | number, fileName?: string): void {
if (this.formData) {
if (fileName) {
this.formData.append(key, new Blob([value as Uint8Array], { type: "application/octet-binary" }), fileName);
} else {
this.formData.append(key, value + "");
}
} else {
this.data.push(this.boundary, '\r\nContent-Disposition: form-data; name="', this.str2u8s(key), '"');
if (fileName) {
this.data.push('; filename="', this.str2u8s(fileName), '"\r\nContent-Type: ', contentTypes.get(value as Uint8Array), "\r\n\r\n", value as Uint8Array, "\r\n");
} else {
this.data.push('\r\n\r\n', this.str2u8s(value + ""), "\r\n");
}
}
}
public getBody(): FormData | Uint8Array {
if (this.formData) {
return this.formData;
} else {
const u8ss: Array<Uint8Array> = [];
for (const part of this.data) {
u8ss.push(part instanceof Uint8Array ? part : this.cs2u8s(part));
}
u8ss.push(this.boundary, this.cs2u8s("--\r\n"));
let L: number = 0;
for (const u8s of u8ss) {
L += u8s.length;
}
const bytes = new Uint8Array(L);
let i: number = 0;
for (const u8s of u8ss) {
for (const byte of u8s as any) {
bytes[i++] = byte;
}
}
u8ss.length = 0;
return bytes;
}
}
}
手搓
这是接收端代码：receive.php.zip (1.2 KB)