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Angular 8: URL 編碼形式 POST

[英]Angular 8: URL encoded form POST

我想將表單數據發布到接受並返回 text/html/xml 的服務器。 我正在有效地嘗試模擬普通的 URL 編碼形式的 POST。 My Angular 8 POST function successfully posts (200 OK), but the server can't understand the data because it is JSON and not URL encoded.

響應和請求頭 state Content-Type: text/html; Charset=utf-8 Content-Type: text/html; Charset=utf-8Accept: text/html, application/xhtml+xml, */*我在 httpClient 選項中添加了responseType: "text" 為什么服務器仍在發送 JSON 而不是 URL 編碼數據?

// obj2 = output from ngForm
// baseUrl2 = server that sends and receives text/html/xml

public postForm(obj2) {
    return this.httpClient
    .post(this.baseUrl2, obj2, {
        headers: new HttpHeaders({
            "Content-Type": "application/x-www-form-urlencoded",
            Accept: "text/html, application/xhtml+xml, */*"
        }),
        responseType: "text"
    })
    .map(data => data);
}

發送的表單數據:

{"Form data":{"{\"personsNameText\":\"name9\",\"centreEmailAddressText\":\"name9@name.com\",\"centreTelephoneNumberText\":123456789,\"centreNumberText\":\"ab123\",\"centreNameText\":\"ab123\",\"invoiceText\":\"123456789\",\"currencyText\":\"GBP\",\"amountText\":\"100\",\"cardtypeText\":\"Credit card\",\"commentsText\":\"Comments.\",\"declarationText\":true}":""}}

我想要的是:

personsNameText=name9?centreEmailAddressText=name9@name.com?centreTelephoneNumberText=123456789?centreNumberText=ab123?centreNameText=ab123?invoiceText=123456789?currencyText=GBP?amountText=100?cardtypeText=Credit card?commentsText=Comments.?declarationText=true

我不確定obj2 object 的類型,但我假設它類似於

interface UserFormData {
  ['Form data']: { [name: string]: value };
}

在發布之前,您需要將其轉換為FormData 類似的東西:

const formEncodedObj2 = new FormData();
const obj2Keys = obj2['Form data'];
Object.keys(obj2Keys).forEach(key => formEncodedObj2.append(key, obj2Keys[key]));

然后發送formEncodedObj2 object。

所以,這個解決方案為我解決了各種問題:

  1. 使用 Angular 8 的 forms 和 HttpClient 發布 x-www-form-urlencoded 數據
  2. 更正不需要的編碼字符
    • 我的具體問題是一個唯一的驗證字符串包含被轉換為 HTML 實體的&符號,即&& .
// userdata.service.ts

public postForm(obj) {
  return this.httpClient
    .post(this.baseUrl2, obj, {
      headers: new HttpHeaders({
        "Content-Type": "application/x-www-form-urlencoded",
        "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
        "Referer": "http://referer.com" // Replace with your own.
      }),
      responseType: "text"
    })
    .map(data => data)
    .pipe(
      retry(1),
      catchError(this.handleError)
    );
}

// app.component.ts

PostForm(userdata) {
    // Stringify and convert HTML entity ampersands back to normal ampersands.
    const corrected = JSON.stringify(userdata).replace(/(&)/gm, '&');
    // Convert back to JSON object.
    const corrected2 = JSON.parse(corrected);
    // entries() iterates form key:value pairs, URLSearchParams() is for query strings
    const URLparams = new URLSearchParams(Object.entries(corrected2));
    // Convert to string to post.
    const final = URLparams.toString();
    // Post it
    this.userdataService.postForm(final).subscribe(reponse2 => {
        console.log(reponse2);
    });
}

URLSearchParams()是突破,正如 Vlad 建議的那樣,絕對確定要處理的類型。 我應該使用類型來避免混淆。 我可能應該使用Angular 攔截器來處理字符操作。

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