使用PutsReq测试Angular POST请求时遇JSON语法错误求助

Hey there! Let's figure out why you're hitting that SyntaxError: Unexpected token e in JSON at position error—especially since you've confirmed your payload looks good in the Chrome dev tools. This is a common gotcha when working with Angular's HttpClient, so let's break down the likely causes and fixes:

1. The most common culprit: PutsReq is returning invalid JSON #

Angular's HttpClient automatically expects the server response to be valid JSON by default. If your PutsReq endpoint is returning anything that isn't properly formatted JSON (like plain text, a malformed object, or even a tiny typo in the JSON), Angular will throw this parsing error immediately.

Fix: Check your PutsReq response setup #

• Head to your PutsReq dashboard and confirm the response you're sending back is valid JSON. Even a simple empty object works: {}
• Double-check for easy-to-miss typos: missing commas, unclosed quotes, or mismatched curly brackets/brackets are frequent offenders.
• Test with a super simple response first (e.g., {"status": "success"}) to rule out formatting issues entirely.

2. Tell Angular to skip JSON parsing (if needed) #

If you intentionally want PutsReq to return plain text or another non-JSON format, you can override Angular's default behavior by adding the responseType option to your POST request:

Updated service code: #

postUserRoundsForm(userRounds: UserHandicapRounds) : Observable<any> {
  return this.http.post(
    "https://putsreq.com/ZmOvG1coGYa174oig3r1", 
    userRounds,
    { responseType: 'text' } // This skips automatic JSON parsing
  );    
}

This tells Angular not to attempt to parse the response as JSON, which will eliminate the syntax error if the response isn't meant to be JSON.

3. Quick sanity checks to rule out edge cases #

• Make sure you haven't set up any PutsReq rules that modify the response in a way that breaks JSON formatting (like adding extra text before/after the JSON object).
• Try sending a test POST directly from Postman or curl to your PutsReq endpoint—this lets you see the raw response and spot issues that might not be obvious in Chrome's network tab.

Since you're new to HTTP, it's important to note: this error has nothing to do with your request payload (you already confirmed that's correct!)—it's all about how Angular is trying to interpret the server's response.

内容的提问来源于stack exchange，提问作者Eric Petela