获取令牌协议修改，Method。

brave-spring-boot-starter/src/main/java/cn/quantgroup/tech/brave/job/TokenJob.java

@@ -10,6 +10,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.http.HttpEntity;
 import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
 import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.web.client.RestTemplate;
@@ -55,7 +56,7 @@ public class TokenJob {
         HttpHeaders requestHeaders = new HttpHeaders();
         requestHeaders.add(CREDENTIAL, base64ForCredential());
         HttpEntity<Map<String, Object>> httpEntity = new HttpEntity<>(requestHeaders);
-        TokenResp tokenResp = restTemplate().postForObject(tokenUrl, httpEntity, TokenResp.class);
+        TokenResp tokenResp = restTemplate().exchange(tokenUrl, HttpMethod.GET, httpEntity, TokenResp.class).getBody();
         log.info("getToken tokenResp = 【{}】", tokenResp);
         boolean tokenValid = tokenResp != null && SUCCESS == tokenResp.getCode() && StringUtils.isNotBlank(tokenResp.getToken());
         if (tokenValid) {