LoadRunner替换url字符串（可以同时替换多个）

/*
* @param char* dest 目标串，也就是替换后的新串
* @param const char* src 源字符串，被替换的字符串
* @param const char* oldstr 旧的子串，将被替换的子串
* @param const char* newstr 新的子串
* @param int len 将要被替换的前len个字符
*/
 
char *lr_strreplace(char *dest, char *src, const char *oldstr, const char *newstr, size_t len){
 
	char *needle;  //子串位置指针
	char *tmp; //临时内存区
 
	//如果串相等，则直接返回
	if(strcmp(oldstr, newstr)==0){   
		return src;
	}
 
	dest = src;   //把源串地址赋给指针dest，即让dest和src都指向src的内存区域
 
	//如果找到子串, 并且子串位置在前len个子串范围内, 则进行替换, 否则直接返回
	while((needle = (char *) strstr(dest, oldstr)) && (needle -dest <= len)){
 
		//分配新的空间: +1 是为了添加串尾的'\0'结束符
		tmp=(char*)malloc(strlen(dest)+(strlen(newstr)-strlen(oldstr))+1);
 
		strncpy(tmp, dest, needle-dest);  //把src内的前needle-dest个内存空间的数据，拷贝到arr
 
		tmp[needle-dest]='\0';  //标识串结束
 
		strcat(tmp, newstr);  //连接arr和newstr, 即把newstr附在arr尾部, 从而组成新串(或说字符数组)arr
 
		strcat(tmp, needle+strlen(oldstr));  //把src中 从oldstr子串位置后的部分和arr连接在一起，组成新串arr
 
		dest = (char *)strdup(tmp);  //把用malloc分配的内存，复制给指针retv
 
		free(tmp);   //释放malloc分配的内存空间
    }
    return dest; 
}

Action()

{	

	char *str;
 
	char *old="/";  //需要替换的字符串","
 
	char *new="%2F";  
 
	char *dest;

	//假设关联的字符串 
	lr_save_string("0DtP9VBnSJ0FNGCx:PoHMKkehhpWxVS+Ckc9QKq93YwJhoRqEaoGl5DUFLjo/US4qEwD4MHAvfcs+DjYa/lXCHpjzzdxo3r/qMjfEYGWM","gridFieldSign");

	str=lr_eval_string( "{gridFieldSign}" );
	str=lr_strreplace( dest,str,":","%3A",strlen(str) );
	str=lr_strreplace( dest,str,"/","%2F",strlen(str) );
	str=lr_strreplace( dest,str,"+","%2B",strlen(str) );

	//转换后的字符串付给新的参数
	lr_save_string( str,"gridFieldSign1" );

	lr_output_message("gridFieldSign1最终替换后字符串: %s", lr_eval_string("{gridFieldSign1}"));


	return 0;
}

　　原代码，可参考：

Action()
{
//11041331","11041372","11041373","11041374
//11041331|11041372|11041373|11041374
 
char *str;
 
char *old="\",\"";  //需要替换的字符串","
 
char *new="|";  
 
char *dest;
 
lr_save_string("11041331\",\"11041372\",\"11041373\",\"11041374", "src");
 
str=lr_eval_string("{src}");
 
lr_output_message("替换前的字符串=%s",lr_eval_string("{src}"));
 
lr_output_message("替换后的字符串=%s",lr_strreplace(dest,str,old,new,strlen(str)));
 
    return 0;
}

　　补充：

int main()
{
char *str="http://192.168.1.1:58763/result.xml";
char *old="192.168.1.1";
char *new="127.0.0.1";
 
char *dest;
//分配内存空间: 大小 == src的长度 ＋ newstr和oldstr长度差(可能是正负或0)+1
printf("%s\n",strreplace(dest, str, old, new,1));
printf("%s\n",strreplace(dest, str, old, new,5));
printf("%s\n",strreplace(dest, str, old, new,9));
printf("%s\n",strreplace(dest, str, old, new,11));
 
printf("%s\n",strreplace(dest, str, old, new,40));
 
if(dest)
{
free(dest);
}
return 0;
 
}