如何配置security exits使MQEnvironment.password 能有效验证

用JAVA编写的客户端，
MQEnvironment.hostname = hostName;
MQEnvironment.channel = channel ;
MQEnvironment.properties.put(MQC.TRANSPORT_PROPERTY,MQC.TRANSPORT_MQSERIES_CLIENT);
MQEnvironment.port = port;
MQEnvironment.CCSID = ccsid;
MQEnvironment.userID = "yuanpf";
MQEnvironment.password = "123456";

MQEnvironment.password=""    查资料说这个值在没配置安全出口的情况下并不生效，请问如何配置安全出口让他生效，刚接触，请稍具体一点回答 ，谢谢