Get and post are two commonly used request methods in the HTTP protocol. They are essentially TCP connections. The main differences are:
Parameter position:
The parameters of the get request are in the URL, separated from the URL by ?, and multiple parameters are connected by &;
The parameters of the post request are in the request body, which can contain any data type, such as form data, Json data, etc.;
safety:
The parameters of the get request are exposed in the URL, so it is not suitable for passing sensitive information;
The parameters of the post request are in the request body, which is relatively safer;
Processing method:
Get requests are generally used to obtain data, request resources from the server, and return response data;
Post requests are generally used to transfer data, upload the data to the server for processing, and return the response result;
Caching mechanism:
The get request enables the browser caching mechanism by default, because the get request has no side effects (the resources on the server will not be modified), and the data obtained by repeated requests is the same;
The post request disables the browser caching mechanism by default, because the post request may modify the resources on the server, and the results of repeated requests may be different;
Request length limit:
The parameter length of the get request is limited by the length of the URL, so long parameters may be truncated;
The parameter length of the post request is theoretically unlimited, but in fact both the server and the client may set a maximum length limit;