链接令牌如何返回公共令牌?公共令牌 = request.body.publictoken?

如何解决链接令牌如何返回公共令牌?公共令牌 = request.body.publictoken?

  1. 您能否解释一下 link_token 返回公共令牌的方式和位置?
app.post('/api/create_link_token',async function (request,response) {
  const configs = {
    user: {
      // This should correspond to a unique id for the current user.
      client_user_id: 'user-id',},client_name: 'Plaid Quickstart',products: PLAID_PRODUCTS,country_codes: PLAID_COUNTRY_CODES,language: 'en',};

  if (PLAID_REDIRECT_URI !== '') {
    configs.redirect_uri = PLAID_REDIRECT_URI;
  }

  if (PLAID_ANDROID_PACKAGE_NAME !== '') {
    configs.android_package_name = PLAID_ANDROID_PACKAGE_NAME;
  }
  try {
    const createTokenResponse = await client.linkTokenCreate(configs);
    console.log('Create Token response below')
    prettyPrintResponse(createTokenResponse.data);
    response.json(createTokenResponse.data);
  } catch (error) {
    prettyPrintResponse(error);
    return response.json(formatError(error.response));
  }
});

根据 Plaid 文档: /link/token/create 端点创建了一个link_token,它在初始化Link 时需要作为参数。 Link 初始化完成后,它会返回一个 public_token,然后可以通过 /item/public_token/exchange 作为主 Link 流程的一部分将其交换为 access_token。

  1. PUBLIC_TOKEN= request.body.public_token 怎么样?公共令牌是如何进入 request.body 的?
app.post('/api/set_access_token',response,next) {
// Im inquiring about the line right below//
  PUBLIC_TOKEN = request.body.public_token;
  console.log("after",PUBLIC_TOKEN)
  try {
    const tokenResponse = await client.itemPublicTokenExchange({
      public_token: PUBLIC_TOKEN,});
    prettyPrintResponse(tokenResponse.data);
    ACCESS_TOKEN = tokenResponse.data.access_token;
    ITEM_ID = tokenResponse.data.item_id;
    response.json({
      access_token: ACCESS_TOKEN,item_id: ITEM_ID,error: null,});
  } catch (error) {
    prettyPrintResponse(error);
    return response.json(formatError(error.response));
  }
});

解决方法

  1. 链接令牌正在返回

response.json(createTokenResponse.data);

此代码使用 Express 框架——您可以在此处阅读更多相关信息:https://masteringjs.io/tutorials/express/json

在客户端,createTokenResponse.data 被接收为 data 并从中提取 link_token

`          $.post("/api/create_link_token",{},function (data) {
            ...
            localStorage.setItem("link_token",data.link_token);
            handler = Plaid.create({
              token: data.link_token,

或者,在 React Quickstart 中,在 frontend/src/App.tsx 中:

  const generateToken = useCallback(
    async (paymentInitiation) => {
      const path = paymentInitiation
        ? "/api/create_link_token_for_payment"
        : "/api/create_link_token";
      const response = await fetch(path,{
        method: "POST",});
      ...
      const data = await response.json();
        ...
        dispatch({ type: "SET_STATE",state: { linkToken: data.link_token } });
      }
      localStorage.setItem("link_token",data.link_token); //to use later for Oauth
    },[dispatch]
  );
  1. public_token 在调用 /api/set_access/token 期间设置,此处:
handler = Plaid.create({
              token: data.link_token,onSuccess: function (public_token) {
                $.post(
                  "/api/set_access_token",{
                    public_token: public_token
                  },

或者,如果您使用的是 React Quickstart,则此代码位于

frontend/src/Components/Link/index.tsx:

const onSuccess = React.useCallback(
    (public_token: string) => {
      // send public_token to server
      const setToken = async () => {
        const response = await fetch("/api/set_access_token",{
          method: "POST",headers: {
            "Content-Type": "application/x-www-form-urlencoded;charset=UTF-8",},body: `public_token=${public_token}`,});

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