可以用string来存储mysql_stmt_fetch返回的结果吗?

AAA20090987 2015-04-23 08:59:00

先上代码：

#include <stdio.h>

#include <mysql.h>

#include <string.h>

 

int main(void)

{

    MYSQL *conn = mysql_init(NULL);     //初始化服务器句柄

    /*登陆服务器*/

    if(!mysql_real_connect(conn, "localhost", "root", "", "test", 0, NULL, 0))  

    {

        fprintf(stderr, "mysql_real_connect: %s\n", mysql_error(conn));

        return -1;

    }

   

    MYSQL_STMT *stmt = mysql_stmt_init(conn); //创建MYSQL_STMT句柄

 

    char *query = "select * from stu where id=?;";

    if(mysql_stmt_prepare(stmt, query, strlen(query)))

    {

        fprintf(stderr, "mysql_stmt_prepare: %s\n", mysql_error(conn));

        return -1;

    }

 

    int id = 1; 

    char name[20];

 

    MYSQL_BIND params[2];

    memset(params, 0, sizeof(params));

    params[0].buffer_type = MYSQL_TYPE_LONG;

    params[0].buffer = &id;

    params[1].buffer_type = MYSQL_TYPE_STRING;

    params[1].buffer = name;

    params[1].buffer_length = sizeof(name);

   

    mysql_stmt_bind_param(stmt, params);

    mysql_stmt_bind_result(stmt, params); //用于将结果集中的列与数据缓冲和长度缓冲关联（绑定）起来

    mysql_stmt_execute(stmt);           //执行与语句句柄相关的预处理

    mysql_stmt_store_result(stmt);      //以便后续的mysql_stmt_fetch()调用能返回缓冲数据

   

    while(mysql_stmt_fetch(stmt) == 0) //返回结果集中的下一行

        printf("%d\t%s\n", id, name);

 

    mysql_stmt_close(stmt);             

    mysql_close(conn);

   

    return 0;

}