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When using SpringMVC, we want to pass array reference types. SpringMVC has some restrictions on array passing: After testing: SpringMVC supports parameter passing for one-dimensional arrays, but does not support parameter passing for multi-dimensional arrays. If we want to pass multi-dimensional arrays, then we I have no choice but to use other methods, such as: 1. Split the multi-dimensional array into a one-dimensional array; 2. Change the multi-dimensional array to a set and transfer it; 3. Or change it to a string, process it during the reception time, etc., 4. Or transfer all arrays The method of splicing and passing values ​​(for example: data=1&data=2&data=3, representing the values ​​​​of three arrays) is very flexible. 1 SpringMVC passes one-dimensional array: When passing the array type, you need to add value in @requestParam(), otherwise the HTTP Status 400 - Required long[] parameter 'data' is not present error will occur. For example: @RequestParam(value =

1. Details and solutions to SpringMVC passing array request issues

Introduction: When using SpringMVC, we want to pass array reference types. SpringMVC has some restrictions on array passing: After testing: SpringMVC supports parameter passing for one-dimensional arrays, but does not support parameter passing for multi-dimensional arrays. , if we want to pass a multi-dimensional array, then we have to use other methods, such as: 1. Split the multi-dimensional array into a one-dimensional array; 2. Change the multi-dimensional array to a set for transmission; 3. Or change it to a string, and process it during the reception time, etc. Wait, 4. Or concatenate and pass the values ​​​​in all the arrays (for example: data=1&data=2&data

##2. javascript - ajax cross-domain request issue

Introduction: The php side has header("Access-Control-Allow-Origin:*"); ajax request {code...} data is empty, for example, {} will report an error CORS header missing 'Access -Control-Allow-Origin' data Just write a parameter such as {dasdsa:1} and it's normal. What's going on? On the test machine before...

##3.

ajax cross-domain request problem

Introduction: The php side has header("Access-Control-Allow-Origin:*"); ajax request {code...} data If you leave {} empty, an error will be reported. The 'Access-Control-Allow-Origin' data is missing. Just write a parameter such as {dasdsa:1} and it will be normal. What happened on the test machine before?

#4. nginx timeout forwarding request problem

Introduction:: This article mainly introduces the nginx timeout forwarding request problem, for PHP tutorial Interested students can refer to it

##5. firefox php verification code image multiple request problem needs to be solved

##Introduction:: This article mainly introduces the problem of multiple request for firefox PHP verification code image to be solved. Students who are interested in PHP tutorials can refer to it ##. #6.

Ask me a question about the http request for background images. _html/css_WEB-ITnose

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7. Kneel down and beg the PHP master to solve the problem! Been stuck for a week! curl proxy request problem!

Introduction: Beg the PHP master to solve the problem! Been stuck for a week! curl proxy request problem!

8. php http request problem

Introduction: php http request problem

9. php http request related issues

#Introduction: php http request related issues error message: {"errcode":41001,"errmsg":" access_token missing"}

10. Kneel down and beg the PHP master to solve the problem! Been stuck for a week! Problems related to curl proxy request

#Introduction: I beg the PHP master to solve the problem! Been stuck for a week! curl proxy request problem! $ch = curl_init();curl_setopt ($ch, CURLOPT_PROXY,'218.66.66.18:80');curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);cu

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