Try-Catch包裹循环重试逻辑失效及CFLog无输出问题求助

Let's walk through the problems in your code that are causing errors, missing logs, and unreliable retries:

1. CFLog Isn't Working Because of a Typo #

You have a typo in your log filename: file = "loogevent" should be file = "logevent". That's why you're not seeing any log entries—ColdFusion can't write to a file with a misspelled name!

2. Retry Count Is Being Doubled #

In your catch block, you're manually incrementing i = i + 1, but your for loop already increments i on each iteration. This means every failed attempt skips an extra retry (e.g., first failure takes i from 1 → 3 instead of 2), so you'll never actually get 10 full retries. Remove that manual increment.

3. Undefined Variable mData Causes Silent Failures #

You're trying to append mData to aData, but mData isn't defined anywhere in your code. You meant to append the a object you just created (ArrayAppend(aData, a)). This is likely throwing an error that's either not being caught properly, or your broken log setup is hiding it.

4. Unscoped Loop Variable i #

Your for loop uses a global i (no var declaration), which could be modified by other code outside the loop and break your retry logic. Always scope loop variables locally with var.

Fixed Code Example #

Here's the corrected version of your code with all these issues addressed:

var aData = []; 
for (var i = 1; i <= 10; i++) { 
    try { 
        var a = {}; 
        var as = calltoapitoogetdata; // Assuming this is your actual API call function
        a['count'] = as; 
        ArrayAppend(aData, a); // Fixed: append 'a' instead of undefined 'mData'
        var retJSON = serializeJSON(aData); 
        writedump(retJSON); 
        break; // Exit loop on success
    } 
    catch (any e) { 
        // Removed manual i increment—loop handles this
        cflog(text = "Call failed on attempt #i#. Error: #e.message#", application = true, file = "logevent"); 
        writedump("Retry attempt #i# failed: #e.message#"); 
    } 
}

Additional Tips #

• Add the error message (e.message) to your log to get more context about why the API call is failing.
• If calltoapitoogetdata is an asynchronous operation, your try/catch won't catch errors thrown later—you'll need to handle async errors with callbacks or promises instead.
• Verify that your ColdFusion log directory has write permissions so cflog can create the file.

内容的提问来源于stack exchange，提问作者simone