我们在使用loadrunner进行性能测试过程中，常常会碰到服务器返回乱码的情况，网上常常使用的方法如下：

然而在有些时候该方法不是那么的灵光，建议使用Loarunner的函数直接解决该问题，下面附上代码：

char *RespCode;          ///定义需要应用的字段Action()
{web_reg_save_param("RespCode",     //获取返回参数值"LB={\"code\"\:","RB=}",LAST);lr_rendezvous("test");lr_start_transaction("test");web_custom_request("web_custom_request","URL=https://xx.xx.xx.xx//api/v3/getDevData","Method=GET",//"TargetFrame=",//"Resource=0","EncType=application/json",//"Referer=",//"Body=",LAST);//lr_end_transaction("test", LR_AUTO);lr_convert_string_encoding(lr_eval_string("{RespCode}"),LR_ENC_UTF8 ,LR_ENC_SYSTEM_LOCALE, "UnicodeString");       ///lr_convert_string_encoding   ----该函数用来将乱码转义成明文，lr_eval_string函数用来调用参数{RespCode}，Loarunner无法直接调用，语法如此~if(strncmp(lr_eval_string("{UnicodeString}"), "200",3) == 0)   ////比较函数：strncmp比较从头开始指定长度的字符是否相同，相同则为0，否则非0.{lr_end_transaction("test", LR_PASS);}else{lr_end_transaction("test", LR_FAIL); };lr_output_message("收到结果:%s",lr_eval_string("{UnicodeString}"));return 0;
}

按照上述的模板可以套用各种各样的乱码的情况。
（PS：如果仅仅是对接口进行测试的话，需要开启loadrunner的扩展日志去查看：
）
成功的结果如下：

Action.c(30): Notify: Saving Parameter "RespCode = 200,"msg":"璇锋眰鎴愬姛","data":[{"ip":"10.2.88.55","devOnlyId":"09460e4e7f3e208a8a4a1d82d41b0cc1","regState":"0","deviceType":"0"".
Action.c(30): HTML parsing not performed for Content-Type "application/json" ("ParseHtmlContentType" Run-Time Setting is "TEXT"). URL="https://192.168.96.253//api/v3/getDevData"  	[MsgId: MMSG-26548]
Action.c(30): web_custom_request("web_custom_request") was successful, 447 body bytes, 352 header bytes  	[MsgId: MMSG-26386]
Action.c(41): Notify: Parameter Substitution: parameter "RespCode" =  "200,"msg":"璇锋眰鎴愬姛","data":[{"ip":"10.2.88.55","devOnlyId":"09460e4e7f3e208a8a4a1d82d41b0cc1","regState":"0","deviceType":"0""
Action.c(41): Notify: Saving Parameter "UnicodeString = 200,"msg":"请求成功","data":[{"ip":"10.2.88.55","devOnlyId":"09460e4e7f3e208a8a4a1d82d41b0cc1","regState":"0","deviceType":"0"\x00".
Action.c(43): Notify: Parameter Substitution: parameter "UnicodeString" =  "200,"msg":"请求成功","data":[{"ip":"10.2.88.55","devOnlyId":"09460e4e7f3e208a8a4a1d82d41b0cc1","regState":"0","deviceType":"0"\x00"
Action.c(45): Notify: Transaction "test" ended with "Pass" status (Duration: 100.6624 Wasted Time: 85.3840).
Action.c(50): Notify: Parameter Substitution: parameter "UnicodeString" =  "200,"msg":"请求成功","data":[{"ip":"10.2.88.55","devOnlyId":"09460e4e7f3e208a8a4a1d82d41b0cc1","regState":"0","deviceType":"0"\x00"
Action.c(50): 收到结果:200,"msg":"请求成功","data":[{"ip":"10.2.88.55","devOnlyId":"09460e4e7f3e208a8a4a1d82d41b0cc1","regState":"0","deviceType":"0"
Ending action Action.
Ending iteration 1.
Ending Vuser...
Starting action vuser_end.
Ending action vuser_end.
Vuser Terminated.