针对Beanshell Assertion提供的内置变量，需要区分类型。对于字符串类型可在Beanshell Assertion内部直接使用，而针对对象类型，则可在此类型上调用方法。
SampleResult 对象类型
Response 对象类型
ResponseData byte[]
ResponseCode 字符串
ResponseMessage 字符串
ResponseHeaders 字符串
RequestHeaders 字符串
SampleLabel 字符串
SamplerData 字符串
Successful boolean
log.info("原生的ResponseData============================:"+ResponseData);
log.info("转换后的的ResponseData2========================:"+new String(ResponseData));
String reponseDataAsString = Response.getResponseDataAsString();
String reponseDataAsString2 = SampleResult.getResponseDataAsString();
log.info("reponseDataAsString============================:"+reponseDataAsString);
log.info("reponseDataAsString2============================:"+reponseDataAsString2);
log.info("isSuccessful=============================:"+Successful);
log.info("ResponseCode=============================:"+ResponseCode);
log.info("ResponseMessage=============================:"+ResponseMessage);
log.info("SampleLabel=============================:"+SampleLabel);
log.info("SamplerData=============================:"+SamplerData);
注下：isSuccessful为boolean类型
