Basic ideas for implementing mobile phone SMS verification by Java

This example shares the specific code for Java to implement mobile SMS verification for your reference. The specific content is as follows

Overall process:

1. The client fills in the mobile phone number and clicks the get verification code button through the client to verify whether the mobile phone number is valid. If it is valid, the client sends a request to the background server. The client starts countdown for 60s, and if it does not pass, it will return;
2. Server, verify whether the mobile phone number is registered or valid. After passing, it calls the third party's SMS communication interface and sends relevant data (including mobile phone number and verification code), and then calls back the result. If successful, the verification code is stored in the session. If it fails, it returns a prompt. If it fails, it returns.
3. After the customer receives the verification code, fill in and send the request within the valid time.
4. On the server side, after receiving the request, the verification code sent by the user is compared with the verification code placed in the session in advance. The same passes, otherwise the verification code will be invalid.

After passing, the verification code in the session needs to be invalidated, which is generally set to empty.

The first step is pseudo-code:

 function sendCaptcha(tel) { console.log("sendCaptcha: tel = " + tel); $.ajax({ type: 'post', url: '/sms/captcha/' + tel, dataType: "json", success: function (data) { console.log("sendCaptcha ==> success: data = " + eval(data)); if (data) { countdown(); b_code = false; } else { alert("You send too fast!"); } }, error: function (data) { console.log("sendCaptcha ==> error: data = " + eval(data)); alert("network timeout"); clearTimeout(t); b_code = true; var msg = "get verification code"; $("#code").text(msg); c = 60; } }); }

Step 2 pseudocode:

 @RequestMapping(value = "captcha/{recPhoneNum}", method = RequestMethod.POST) public Object getSmsCaptcha(ModelMap model, @PathVariable("recPhoneNum")String recPhoneNum) { String responseBody = null; /* Verify whether the mobile phone number is registered here*/  // Generate verification code String captcha = Generator.generateCaptcha();  // Set the third-party SMS communication interface parameter to req.setReceive(recPhoneNum); try {  // Send a request responseBody = req.send(); // Put the verification code in session model.addAttribute("captcha", captcha);   // Get the result responseBody = rsp.getBody(); log.debug("getSmsCaptcha: responseBody = " + responseBody); if (rsp.getResult() != null) { model.addAttribute("success_response", rsp.getResult()); } else { model.addAttribute("error_response", rsp.getSubMsg()); } } catch (ApiException e) { log.error("getSmsCaptcha :" + e.getErrMsg()); } // parse result if (successJson != null) { successJson = successJson.getJSONObject("result"); return successJson.getBoolean("success"); } else { return false; } }

The last step pseudocode:

 // Take out the verification code from the session String captcha = session.getAttribute("captcha");// Compare if (reqCaptcha.equals(captcha))// If the same passes, the verification code session.setAttribute("captcha", null);else// If it fails and prompts the invalid verification code

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