redis数据库c语言接口

来源：互联网发布：人工智能的英文作文编辑：程序博客网时间：2024/05/16 11:51

redis数据库拥有方便快捷的c语言接口，下面我将用程序操作redis数据库。

首先redis的c语言接口API是hiredis，下载地址为https://github.com/redis/hiredis

将此API下载到本地：

git clone https://github.com/redis/hiredis

编译安装：

make make install

下面是c语言接口代码redisrun.c

#include <stdio.h>#include <stdlib.h>#include <stddef.h>#include <stdarg.h>#include <string.h>#include <assert.h>#include <memory.h>#include <hiredis/hiredis.h>void RedisGet(char* key){        redisContext* c = redisConnect("192.168.3.242", 7000);        if(c->err){                redisFree(c);                printf("Connect to redisServer faile\n");                return ;        }        printf("Connect to redisServer Success, ready to Get\n");        char command[100] = "get ";        strcat(command, key);        redisReply* r = (redisReply*)redisCommand(c, command);        if ( r->type != REDIS_REPLY_STRING){                printf("Failed to execute command[%s]\n",command);                freeReplyObject(r);                redisFree(c);                return;        }        printf("The value of '%s' is %s\n", key, r->str);        freeReplyObject(r);        redisFree(c);}void RedisPut(char* key, char* value){        redisContext* c = redisConnect("192.168.3.242", 7000);        if(c->err){                   redisFree(c);                printf("Connect to redisServer faile\n");                return ;         }               printf("Connect to redisServer Success, ready to Put\n");                        char command[1000] = "set ";        strcat(command, key);        strcat(command," ");        strcat(command, value);        redisReply* r = (redisReply*)redisCommand(c, command);        if(NULL == r){                  printf("Execut command failure\n");                redisFree(c);                  return;          }               if( !(r->type == REDIS_REPLY_STATUS && strcasecmp(r->str,"OK")==0)){                printf("Failed to execute command[%s]\n",command);                  freeReplyObject(r);                  redisFree(c);                  return;          }               freeReplyObject(r);                printf("Succeed to execute command[%s]\n", command);        redisFree(c);  }  struct  SFCOrder{             int  SFCid;        int  SFCNumber;        int  SFClist[10];};int struct_to_str(char **dest, struct SFCOrder *pHead){        unsigned int size = 0;        if (dest == NULL || pHead == NULL)                return -1;        size = 128 + 13 * sizeof(int) ;        *dest = (char *)malloc(size);        if (*dest == NULL)                return -2;        memset(*dest, 0, size);        sprintf(*dest,                "SFClist[1]=%d,"                "SFClist[2]=%d,"                "SFClist[3]=%d,"                "SFClist[4]=%d,"                "SFClist[5]=%d"        return 0;}int str_to_struct(char *str, struct SFCOrder **pHead){        if (str == NULL || pHead == NULL)                return -1;        *pHead = (struct SFCOrder *)malloc(sizeof(struct SFCOrder));        if (*pHead == NULL)                return -2;        memset(*pHead, 0, sizeof(struct SFCOrder));        sscanf(str,                "SFCid=%d,"                "SFCNumber=%d,"                "SFClist[1]=%d,"                "SFClist[2]=%d,"                "SFClist[3]=%d,"                "SFClist[4]=%d,"                "SFClist[5]=%d"        return 0;}int main(int argc, char *argv[]){        struct SFCOrder head_a;        struct SFCOrder *p = NULL;        char *str = NULL;        int res;        head_a.SFCid = 6;        head_a.SFCNumber = 4;        head_a.SFClist[1] = 2;        head_a.SFClist[2] = 3;        head_a.SFClist[3] = 4;        head_a.SFClist[4] = 0;        head_a.SFClist[5] = 0;        res = struct_to_str(&str, &head_a);        if (res != 0)        {                printf("Failed to execute struct_to_str");                return -1;        }        char* key = "SFC6";        char* value = str;        RedisPut(key, value);        RedisGet(key);        res = str_to_struct(str, &p);        if (res != 0)        {                free(str);                str = NULL;        }        free(p);        p = NULL;        printf("succuss\n");        return 0;}

编译上面代码：

gcc redisrun.c -o redisrun -lhiredis

运行代码：

./redisrun

这时会遇到下面问题：

./redis: error while loading shared libraries: libhiredis.so.0.13: cannot open shared object file: No such file or directory

这是因为系统找不到动态库的问题，需要检查/etc/ld.so.conf文件中是否包含需要的动态库目录（如/usr/local/lib），如果没有进行添加。之后执行sudo /sbin/ldconfig，更新系统动态库配置

此时在运行程序即可，显示：

redis数据库c语言接口测试完毕

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