我使用 NodeJS 开发，Express 为框架，在调用微信提供的 【上传图文消息内的图片获取URL】 接口时，axios 报错为 Error: Request failed with status code 412，我不清楚我是哪里做的不对。接口说明必须要用 form表单的形式发送，但是 node 并没有前端的 formData 类，我使用了 form-data 这个 npm 包，通过它来实现此功能，http 请求代理我使用的是 axios，相关代码如下，希望能帮助我解决这个问题， 谢谢！ const SWAP_IMAGE_URL = 'https://api.weixin.qq.com/cgi-bin/media/uploadimg'; let form = new FormData(); form.append("media", fs.createReadStream("./hello.jpg")); let token = await getAccessToken(app_id); let config = {   params: { access_token: token.message },   headers: form.getHeaders() }; let result = await axios.post(SWAP_IMAGE_URL, form, config); console.log(result); // 我十分确定 URL 和 access_token 都是正常有效的, 请求的头部 content-type 为 multipart/form-data 报错的信息如下: message: Error: Request failed with status code 412       at createError (E:\Desktop\WeChat\Develop\myapp\node_modules\axios\lib\core\createError.js:16:15)       at settle (E:\Desktop\WeChat\Develop\myapp\node_modules\axios\lib\core\settle.js:17:12)       at IncomingMessage.handleStreamEnd (E:\Desktop\WeChat\Develop\myapp\node_modules\axios\lib\adapters\http.js:236:11)         at IncomingMessage.emit (events.js:228:7)       at endReadableNT (_stream_readable.js:1185:12)       at processTicksAndRejections (internal/process/task_queues.js:81:21) {     config: {       url: 'https://api.weixin.qq.com/cgi-bin/media/uploadimg',       method: 'post',       params: [Object],       data: [FormData],       headers: [Object],       transformRequest: [Array],       transformResponse: [Array],       timeout: 0,       adapter: [Function: httpAdapter],       xsrfCookieName: 'XSRF-TOKEN',       xsrfHeaderName: 'X-XSRF-TOKEN',       maxContentLength: -1,       validateStatus: [Function: validateStatus]     },     request: ClientRequest {       _events: [Object: null prototype],       _eventsCount: 6,       _maxListeners: undefined,       outputData: [],       outputSize: 0,       writable: true,       _last: true,       chunkedEncoding: true,       shouldKeepAlive: false,       useChunkedEncodingByDefault: true,       sendDate: false,       _removedConnection: false,       _removedContLen: false,       _removedTE: false,       _contentLength: null,       _hasBody: true,       _trailer: '',       finished: true,       _headerSent: true,       socket: [TLSSocket],       connection: [TLSSocket],       _header: 'POST /cgi-bin/media/uploadimg?access_token=30_EXkR_41Gro2UV5C6WXucnrGcIadJ_KW75FyneOzXKv_SHwtk7RWv91pvMNIfg_M4GcR0PHZDQitEFeDPrn4t09y_6SP5C2qjm5PNSUTBFTgxyPjtkcdsetGHSlwSABeAAAMUV HTTP/1.1\r\n' +         'Accept: application/json, text/plain, */*\r\n' +         'Content-Type: multipart/form-data; boundary=--------------------------115632283931134332760190\r\n' +         'User-Agent: axios/0.19.2\r\n' +         'Host: api.weixin.qq.com\r\n' +         'Connection: close\r\n' +         'Transfer-Encoding: chunked\r\n' +         '\r\n',       _onPendingData: [Function: noopPendingOutput],       agent: [Agent],       socketPath: undefined,       method: 'POST',       path: '/cgi-bin/media/uploadimg?access_token=30_EXkR_41Gro2UV5C6WXucnrGcIadJ_KW75FyneOzXKv_SHwtk7RWv91pvMNIfg_M4GcR0PHZDQitEFeDPrn4t09y_6SP5C2qjm5PNSUTBFTgxyPjtkcdsetGHSlwSABeAAAMUV',       _ended: true,       res: [IncomingMessage],       aborted: false,       timeoutCb: null,       upgradeOrConnect: false,       parser: null,       maxHeadersCount: null,       _redirectable: [Writable],       [Symbol(kNeedDrain)]: true,       [Symbol(isCorked)]: false,       [Symbol(kOutHeaders)]: [Object: null prototype]     },     response: {       [Symbol(isCorked)]: false,       [Symbol(kOutHeaders)]: [Object: null prototype]     },     response: {       status: 412,       statusText: 'Precondition Failed',       headers: [Object],       config: [Object],       request: [ClientRequest],       data: ''     },     isAxiosError: true,     toJSON: [Function]   } 大概是因为 fs.createReadStream 这里的原因, 但是我想不到更好的办法了, 不清楚怎么办

[图片] 在2.4.4章节中，&It和&gt没有正常显示，希望管理员小哥哥可以修改。么么哒~