The type okio.ByteString cannot be resolved. It is indirectly referenced from required .class files

开发环境：

eclipse Build id: 20100218-1602 

jdk 1.6 

 

编译出错的关键代码

        okhttp3.RequestBody body = okhttp3.RequestBody.create(contentType, param);

提示： The type okio.ByteString cannot be resolved. It is indirectly referenced from required .class files

解决：

引入  okio-1.14.0.jar （注意版本，作者已经引入了 okhttp-3.10.0.jar）