<button open-type="getPhoneNumber" bindgetphonenumber="getPhoneNumber"></button>

Page({
  getPhoneNumber (e) {
    console.log(e.detail.code)
  }
})

POST https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=ACCESS_TOKEN

@Autowired
private RestTemplate restTemplate;

@PostMapping("/wx/getPhone")
public R getPhone(@RequestParam(value = "code", required = false) String code) {
    // 獲取token
    String token_url = String.format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s", WXConstant.APPID, WXConstant.SECRET);
    JSONObject token = JSON.parseObject(HttpUtil.get(token_url));
    
    // 使用前端code獲取手機號碼 參數(shù)為json格式
    String url = "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=" + token.getString("access_token");
    Map<String, String> paramMap = new HashMap<>();
    paramMap.put("code", code);
    HttpHeaders headers = new HttpHeaders();
    HttpEntity<Map<String, String>> httpEntity = new HttpEntity<>(paramMap, headers);
    System.out.println(httpEntity);
    ResponseEntity<Object> response = restTemplate.postForEntity(url, httpEntity, Object.class);
    return R.ok().message("獲取手機號碼成功.").data(response.getBody());
}

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.7.16</version>
</dependency>

@Configuration
public class RestTemplateConfig {

    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }

    @Bean
    public ClientHttpRequestFactory simpleClientHttpRequestFactory() {
        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
        factory.setReadTimeout(5000);//ms
        factory.setConnectTimeout(15000);//ms
        return factory;
    }
}