一、lr_save_string函数
1.该函数主要是将程序中的常量或变量保存为参数；
//将常量保存为参数 lr_save_string("777","page"); web_url(http://www.sina.com.cn/{page}); lr_eval_string("{page}"); //将变量保存为参数,tmp为变量 lr_save_string(tmp,"page"); web_url(http://www.sina.com.cn/{page}); lr_eval_string("{page}");
二、sprintf函数
| 定义函数 | int sprintf( char *str,const char * format,.........); |
| 函数说明 | sprintf()会根据参数format字符串来转换并格式化数据，然后将结果复制到参数str所指的字符串数组，直到出现字符串结束(’\0’)为止。关于参数format字符串的格式请参考printf()。 |
| 返回值 | 成功则返回参数str字符串长度，失败则返回-1，错误原因存于errno中。 |
| 附件说明 | 使用此函数得留意堆栈溢出，或改用snprintf（）。 |
| 示例 | #include<stdio.h>main(){ char * a=”This is string A!”;char buf[80];sprintf(buf,”>>> %s<<<\n”,a);printf(“%s”.buf);} |
| 执行 | >>>This is string A!<<< |
常用该函数代替itoa，将整数格式化为字符串形式。例如：int page=0; char page_ch[60]; page=page + 10;sprintf(page_ch,"%d",page);
三、lr_eval_string函数
用于返回instring参数中的实际字符串值，可以使用该函数来查看参数化取值是否正确；
char *tmp="hello";lr_save_string("777","page"); //将常量777保存为参数pagelr_output_message(lr_eval_string("{page}")); //获取并输出参数page的当前值 lr_save_string(tmp,"page"); //将变量保存为参数,tmp为变量 lr_output_message(lr_eval_string("{page}"));
脚本示例：
example:int count;web_reg_save_param("flight_num","LB=新","RB=闻","ORD=All",LAST);count=atoi(lr_eval_string("{flight_num_count}")); //sprintf The following example uses sprintf to write the name of a file to a string buffer, filename. This name is made up of the word "log", an underscore, the value of i, and the file suffix. example:Action(){int index = 56;char filename[64], *suffix = "txt"; sprintf(filename, "log_%d.%s", index, suffix);lr_output_message("The new file name is %s", filename); return 0;}Output:Action.c(9): The new file name is log_56.txt //lr_save_string Saves a null-terminated string to a parameter. int lr_save_string (const char *param_value, const char *param_name); aram_value The value to assign to the parameter. param_name The name of the parameter. The lr_save_string function assigns the specified null-terminated string to a parameter.This function is useful in correlating queries. To determine the value of the parameter,use the lr_eval_string function. example:lr_save_string("777", "emp_id"); ///#include "as_web.h" Action(){ int i;int count;char param[10][20]; web_reg_save_param("flight_num","LB=新","RB=闻","ORD=All",LAST); web_add_cookie("BAIDUID=643CC8042E92F7FB5EF83827498BDBDC:FG=1; DOMAIN=www.baidu.com"); web_add_cookie("BDSTAT=495409234680ac099258d109b3de9c82d158ccbf6f81800a19d8bc3eb035a10e; DOMAIN=www.baidu.com"); web_add_header("Accept-Language","zh-cn"); web_url("www.baidu.com","URL=http://www.baidu.com/","Resource=0","RecContentType=text/html","Referer=","Snapshot=t1.inf","Mode=HTML",LAST); count=atoi(lr_eval_string("{flight_num_count}"));lr_error_message("已经数量:%d",count);for(i=1;i<=count;i++){sprintf(param[i],"{flight_num_%d}",count);lr_error_message(param[i]);}for(i=1;i