使用loadrunner读取XML文件中的数据

文件名test.xml,保存在D盘根目录下,内容为：
<employee>
    <id>123</id>
    <name>tom</name>
    <add>beijing</add>
    <age>20</age>
</employee>

loadrunner中的代码如下：

long fp; 

int total = 0;
int readbufsize = 0;
int count = 0;
int i = 0;
int NumOfReadbuf_1  = 0;
int NumOfReadbuf_2  = 0;
int NumOfReadbuf_3  = 0;
int NumOfReadbuf_4  = 0;

char *readbuf;
char *file = "D:\\test.xml";

//读取XML文件
if ( (fp = fopen(file, "r")) == NULL)
{
lr_message("open logfile failed!\n");
return -1;
} 

//申请 readbuf

        readbuf = (char*) calloc(50, sizeof(char));
if (readbuf == NULL)
{
lr_message("Insufficient memory available");
return -1;
}

//循环读取文件
while(!feof(fp))
{
// 扩展缓冲区
if( readbufsize - total <= 10 )
{
readbufsize += 50;
readbuf = (char*) realloc(readbuf, readbufsize);
}

count = fread(readbuf + total, sizeof(char), 10, fp);

total += count;
}

//关闭文件句柄
fclose(fp);

//修改readbuf内存值
readbuf = (char*) realloc(readbuf, readbufsize+1);
        *(readbuf+total) = '\0';

//保存参数  
lr_save_string(readbuf,"readbuf_param");

//读取记录
NumOfReadbuf_1 = lr_xml_get_values("XML={readbuf_param}",
      "ValueParam=id",
      "Query=/employee/id",
                      "SelectAll=yes",
       LAST);

NumOfReadbuf_2 = lr_xml_get_values("XML={readbuf_param}",
      "ValueParam=name",
      "Query=/employee/name",
                      "SelectAll=yes",
       LAST);

NumOfReadbuf_3 = lr_xml_get_values("XML={readbuf_param}",
      "ValueParam=add",
      "Query=/employee/add",
                      "SelectAll=yes",
       LAST);

NumOfReadbuf_4 = lr_xml_get_values("XML={readbuf_param}",
      "ValueParam=age",
      "Query=/employee/age",
                      "SelectAll=yes",
       LAST);
     
        //输出结果
lr_log_message("%s",lr_eval_string("{id_1}"));
lr_log_message("%s",lr_eval_string("{name_1}"));
lr_log_message("%s",lr_eval_string("{add_1}"));
lr_log_message("%s",lr_eval_string("{age_1}"));