Failure to find com.alibaba:fastjson:pom:1.2.49 in https://pkgs.abc.com/maven was cached in the local repository, 
resolution will not be reattempted until the update interval of central has elapsed or updates are forced

<!-- 指定新版本的fastjson: -->
<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>fastjson</artifactId>
  <version>1.2
 
.70</version>
</dependency>

<!-- 排除匯入fastjson依賴: -->
<dependency>
   <groupId>com.weibo</groupId>
   <artifactId>motan-core</artifactId>
   <version>${motan.version}</version>
   <exclusions>
      <exclusion>
         <groupId>com.alibaba</groupId>
         <artifactId>fastjson</artifactId>
      </exclusion>
   </exclusions>
</dependency>