如何从golang的Redis键值存储中获取列表值?

我正在用golang编写一个函数,以通过传递键从redis db获取值。 该值是一个列表。 我正在使用'GET'redis命令来获取值。 </ p>

您可以在代码下面找到</ p>

  func GetValue(key string)[] string {\  n var值[] string 
var err错误
值,err = redis.Strings(conn.Do(“ GET”,键))

如果err!= nil {
log.Fatal(err)

}
fmt.Println(value)
返回值
}

func RetrieveValue(){
keyType,_:= conn.Do(“ TYPE”,最近项关键字)
fmt.Println(“ 类型“,keyType)

var结果[] string
结果= GetValue(recentItemKey)

表示_,val:=范围结果{
fmt.Println(val)
}
} \ n </ code> </ pre>

输出在这里</ p>

 类型列表
2015 / 03/14 19:09:12 WRONGTYPE 针对键持有错误类型的值的操作
exit状态1
</ code> </ pre>

版本</ strong> </ p>

   Go 1.4.2 
Redis-2.8.19
</ code> </ pre>

Redis Go Library </ strong> </ p>

  github.com/garyburd/redigo/redis
</ code> </ pre>

有人可以帮我吗? 谢谢</ p>
</ div>

展开原文

原文

I am writing a function in golang to get the value from redis db by passing the key. The value is a list. I am using 'GET' redis command to get the value. But it is giving me error.

You can find below the code,

func GetValue(key string) []string {
    var value []string
    var err error
    value, err = redis.Strings(conn.Do("GET", key))

    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(value)
    return value
}

func RetrieveValue() {
    keyType, _ := conn.Do("TYPE", recentItemKey)
    fmt.Println("Type", keyType)

    var results []string
    results = GetValue(recentItemKey)

    for _, val := range results {
        fmt.Println(val)
    }
}

And the output is here,

Type list
2015/03/14 19:09:12 WRONGTYPE Operation against a key holding the wrong kind of value
exit status 1

Version

Go 1.4.2
Redis-2.8.19

Redis Go Library

github.com/garyburd/redigo/redis

Could anyone help me on this.? Thank you

1个回答



使用范围</ a >以获得列表的元素:</ p>

  func GetValues(key string)[] string {
value,err:= redis.Strings(conn.Do(“ LRANGE “,key,0,-1))
if err!= nil {
log.Fatal(err)
}
返回值
}
</ code> </ pre>

GET命令获取字符串键的值。 GET命令不适用于列表键。</ p>
</ div>

展开原文

原文

Use LRANGE to get the elements of a list:

func GetValues(key string) []string {
  value, err := redis.Strings(conn.Do("LRANGE", key, 0, -1))
  if err != nil {
    log.Fatal(err)
  }
  return value
}

The GET command gets the value of a string key. The GET command does not work on list keys.

duangu3620
duangu3620 redis.io/commands-在这种情况下,0是列表的开始,-1表示列表的最后一个元素。 -1惯用语在编程语言中很常见,可以表示相同的事物。
5 年多之前 回复
drblhw5731
drblhw5731 您能否解释一下为什么我们将范围设为0,-1? 在哪里可以参考REDIS命令的示例?
5 年多之前 回复
douxu4610
douxu4610 有用。 谢谢!。
5 年多之前 回复
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