环信服务端的集成，报空指针异常

 

response！=null &&200==response.getResponseStatus()&&null!=response.getResponse()

这一行报的错

把报错贴下看看

log4j:WARN No appenders could be found for logger (org.apache.http.client.protocol.RequestAddCookies).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" java.lang.NullPointerException
    at com.easemob.server.example.comm.TokenGenerator.request(TokenGenerator.java:40)
    at com.easemob.server.example.comm.ClientContext.getAuthToken(ClientContext.java:150)
    at com.easemob.server.example.comm.helper.HeaderHelper.getDefaultHeaderWithToken(HeaderHelper.java:15)
    at com.easemob.server.example.api.impl.EasemobIMUsers.createNewIMUserSingle(EasemobIMUsers.java:23)
    at com.easemob.server.example.Main.main(Main.java:45)