hiredis，set，get，publish，subscribe实例

旧城等待， 2022-09-16 04:52 149阅读 0赞

redisCli.c

#include "stdio.h"
    #include "string.h"
    #include "stdlib.h"
    #include "redisCli.h"
    
    static redisContext *redisCliConn = NULL;
    
    
    int redisCliInit(void )
    {
    	redisCliConn  = redisConnect("127.0.0.1",6379);
    	if(redisCliConn != NULL && redisCliConn->err)
    	{
    		printf("redisCliInit connection error: %s\n",redisCliConn->errstr);
    		redisFree(redisCliConn);
    		redisCliConn = NULL;
    		return -1;
    	}
    	return 0;
    }
    
    
    int redisCliClose(void )
    {
    	if(redisCliConn)
    	{
    		redisFree(redisCliConn);
    		redisCliConn = NULL;
    	}
    	return 0;
    }
    
    
    
    int redisCliKeyValueGet(char *cpFindName,char *cpFindValue,int valueLen)
    {
    	redisReply *reply;
    	
    	if(cpFindName == NULL || cpFindValue == NULL)
    	{
    		printf("redisCliKeyValueGet failed in param is null\r\n");
    		return -1;
    	}
    	
    	if(redisCliConn == NULL)
    	{
    		if(0 != redisCliInit())
    		{
    			return -1;
    		}
    	}
    	
    	reply = (redisReply *)redisCommand(redisCliConn,"GET %s",cpFindName);
    	if(reply == NULL || redisCliConn->err)
    	{
    		printf("redisCliKeyValueGet reply is error\r\n");
    		redisFree(redisCliConn);
    		redisCliConn = NULL;		
    		return -1;
    	}
    	else
    	{
    		if((reply->type == REDIS_REPLY_STRING) && (reply->str))
    		{
    			memcpy(cpFindValue,reply->str,
    					(strlen(reply->str) >= valueLen) ? (valueLen - 1) : strlen(reply->str));
    			freeReplyObject(reply);
    			return 0;
    		}
    		else
    		{
    			printf("reply->type == REDIS_REPLY_ERROR\r\n");
    			freeReplyObject(reply);
    			redisFree(redisCliConn);
    			redisCliConn = NULL;
    			return -1;
    		}
    	}
    }
    
    
    int redisCliKeyValueSet(char *cpFindName,char *cpFindValue)
    {
    	redisReply *reply;
    	
    	if(cpFindName == NULL || cpFindValue == NULL)
    	{
    		printf("redisCliKeyValueSet failed in param is null\r\n");
    		return -1;
    	}
    	
    	if(redisCliConn == NULL)
    	{
    		if(0 != redisCliInit())
    		{
    			return -1;
    		}
    	}
    	
    	reply = (redisReply *)redisCommand(redisCliConn,"SET %s %s",cpFindName,cpFindValue);
    	if(reply == NULL || redisCliConn->err)
    	{
    		printf("redisCliKeyValueSet reply is null\r\n");
    		redisFree(redisCliConn);
    		redisCliConn = NULL;		
    		return -1;
    	}
    	else
    	{
    		if(reply->type == REDIS_REPLY_ERROR)
    		{
    			printf("reply->type == REDIS_REPLY_ERROR\r\n");
    			freeReplyObject(reply);
    			redisFree(redisCliConn);
    			redisCliConn = NULL;
    			return -1;
    		}
    		else
    		{
    			freeReplyObject(reply);
    			return 0;			
    		}
    	}	
    }
    
    
    
    int redisCliKeyValuePublish(char *cpFindName,char *cpFindValue)
    {
    	redisReply *reply;
    	
    	if(cpFindName == NULL || cpFindValue == NULL)
    	{
    		printf("redisCliKeyValueSet failed in param is null\r\n");
    		return -1;
    	}
    	
    	if(redisCliConn == NULL)
    	{
    		if(0 != redisCliInit())
    		{
    			return -1;
    		}
    	}
    
    	reply = (redisReply *)redisCommand(redisCliConn,"PUBLISH %s %s",cpFindName,cpFindValue);
    	if(reply == NULL || redisCliConn->err)
    	{
    		printf("redisCliKeyValueSet reply is null\r\n");
    		redisFree(redisCliConn);
    		redisCliConn = NULL;		
    		return -1;
    	}
    	else
    	{
    		if(reply->type == REDIS_REPLY_ERROR)
    		{
    			printf("reply->type == REDIS_REPLY_ERROR\r\n");
    			freeReplyObject(reply);
    			redisFree(redisCliConn);
    			redisCliConn = NULL;
    			return -1;
    		}
    		else
    		{
    			freeReplyObject(reply);
    			return 0;			
    		}
    	}	
    }
    
    
    
    
    
    /*此函数调用会卡住一直执行while，一直等待服务器的发布*/
    void redisCliSubscribe()
    {
    	int i = 0;
    	redisReply* reply;
    	
    	printf("connect redis server:%s,port:%d,SUBSCRIBE channel:%s\n", "127.0.0.1", 6379, "adminCard");
    	redisContext* context = redisConnect("127.0.0.1", 6379);  //链接本地127.0.0.1，端口为6379的redis
    	
    	reply = redisCommand(context, "SUBSCRIBE %s","adminCard");
    	freeReplyObject(reply);
    	while (redisGetReply(context,(void **)&reply) == REDIS_OK)
    	{
    		if (reply)
    		{
    			switch (reply->type)
    			{
    				case REDIS_REPLY_ERROR:
    				case REDIS_REPLY_STRING:
    				case REDIS_REPLY_NIL:
    				case REDIS_REPLY_INTEGER:
    				case REDIS_REPLY_STATUS:
    						break;
    				case REDIS_REPLY_ARRAY:
    						{
    							i = 0;
    							for (i = 0; i < reply->elements; ++i)
    							{
    									redisReply* childReply = reply->element[i];
    									if (childReply->type == REDIS_REPLY_STRING)
    									{
    											printf("value:%s\n", childReply->str);
    									}
    							}
    						}
    						break;
    				default:
    						break;
    			}
    			freeReplyObject(reply);
    		}
    	}
    	redisFree(context);
    	return 0;
    }

redisCli.h

#ifndef __REDIS_CLI_H__
    #define __REDIS_CLI_H__
    
    #include <hiredis/hiredis.h>
    
    int redisCliInit(void );
    int redisCliKeyValueGet(char *cpFindName,char *cpFindValue,int valueLen);
    int redisCliKeyValueSet(char *cpFindName,char *cpFindValue);
    int redisCliKeyValuePublish(char *cpFindName,char *cpFindValue);
    
    //subscribe看.c中的例程  REDIS_SUBSCRIBE
    
    
    #endif