loadrunner怎么打印接口返回的参数

//首先使用web_reg_save_param方法保存服务器返回的参数，如下：
web_reg_save_param ("S_respond","LB=","RB=",LAST);
//调用接口
web_custom_request("query",
"URL=http://14.119.110.190/",
"Method=POST",
"TargetFrame=",
"RecContentType=text/html",
"Resource=0",
"Referer=",
"Mode=HTML",//HTML或者HTTP都可以
"Body={"
"\"version\":\"v1.0\"
"\"requestId\":\"{requestId}\","
"}",
LAST);

//第一种方法：直接打印服务器返回的字符串
lr_output_message(lr_eval_string("{S_respond}"));

//第二种方法：对返回的字符串转码
lr_convert_string_encoding ( lr_eval_string ("{S_respond}"),LR_ENC_UTF8 ,NULL,"respond"); 

//打印转码后的响应报文 
lr_output_message ( "%s",lr_eval_string ("{respond}"));

//编辑打印内容：

//\n\nusername is :%s == 换行换行+ username is：+输出类型；

lr_log_message("\n\nusername is :%s",lr_eval_string("{respond}"));