C语言操作redis数据库

1. 开发环境

• 适用linux操作系统（本次环境在树莓派上使用测试通过）
• 已经安装redis服务端

2. C语言redis库-hiredi安装配置

2.1 下载并且解压hiredis

wget https://github.com/redis/hiredis/archive/master.zip
unzip master.zip
cd hiredis-master/

2.2 hiredis安装

sudo make
sudo make install

mkdir -p /usr/local/include/hiredis /usr/local/include/hiredis/adapters /usr/local/lib
cp -pPR hiredis.h async.h read.h sds.h sslio.h /usr/local/include/hiredis
cp -pPR adapters/*.h /usr/local/include/hiredis/adapters
cp -pPR libhiredis.so /usr/local/lib/libhiredis.so.0.14
cd /usr/local/lib && ln -sf libhiredis.so.0.14 libhiredis.so
cp -pPR libhiredis.a /usr/local/lib
mkdir -p /usr/local/lib/pkgconfig
cp -pPR hiredis.pc /usr/local/lib/pkgconfig

看到这里就装在成功了

3. hiredis简单测试

vim test.c

#include   
#include   
  
int main()  
{  
    redisContext* conn = redisConnect("127.0.0.1", 6379);  
    if(conn->err)   printf("connection error:%s\n", conn->errstr);  
  
    redisReply* reply = redisCommand(conn, "set foo 1234");  
    freeReplyObject(reply);  
  
    reply = redisCommand(conn, "get foo");  
    if (reply->type == 1)//获取到了数据
    {
        printf("%s\n", reply->str);    
    }
  

    freeReplyObject(reply);  
  
    redisFree(conn);  
  
    return 0;  
}

编译：
gcc test.c -o test -lhiredis
运行：
./test
报错：
error while loading shared libraries: libhiredis.so.0.14: cannot open shared object file: No such file or directory

4. 运行出错解决办法

• sudo mkdir /usr/lib/hiredis
• sudo cp /usr/local/lib/libhiredis.so.0.14 /usr/lib/hiredis/
• sudo mkdir /usr/include/hiredis
• sudo cp /usr/local/include/hiredis/hiredis.h /usr/include/hiredis/

5. 验证

5.1 运行程序

./test
输出1234

5.2 redis客户端验证

运行redis-cli
127.0.0.1:6379> get foo
"1234"
若显示“1234”代表安装hiredis成功