解决:face++的开发包faceppsdk.jar 和httpclient.jar 冲突,错误如下: Caused by: java.lang.NoSuchFieldError: INSTANCE at org.apache.http.impl.io.DefaultHttpRequestWriterFactory.(DefaultHttpRequestWriterFactory.java:52) 依赖包httpcore-4.4.jar,httpmime-4.5.2.jar,json.jar