Redis – Java

在您的 Java 程序中开始使用 Redis 之前，您需要确保在机器上安装了 Redis Java 驱动程序和 Java。您可以查看我们的 Java 教程以在您的机器上安装 Java。

安装

现在，让我们看看如何设置 Redis Java 驱动程序。

• 您需要从下载 jedis.jar路径下载 jar。确保下载它的最新版本。

• 您需要将jedis.jar包含到您的类路径中。

连接到Redis服务器

import redis.clients.jedis.Jedis; 

public class RedisJava { 
   public static void main(String[] args) { 
      //Connecting to Redis server on localhost 
      Jedis jedis = new Jedis("localhost"); 
      System.out.println("Connection to server sucessfully"); 
      //check whether server is running or not 
      System.out.println("Server is running: "+jedis.ping()); 
   } 
} 

现在，让我们编译并运行上面的程序来测试与 Redis 服务器的连接。您可以根据需要更改路径。我们假设jedis.jar的当前版本在当前路径中可用。

$javac RedisJava.java 
$java RedisJava 
Connection to server sucessfully 
Server is running: PONG

Redis Java 字符串示例

import redis.clients.jedis.Jedis; 

public class RedisStringJava { 
   public static void main(String[] args) { 
      //Connecting to Redis server on localhost 
      Jedis jedis = new Jedis("localhost"); 
      System.out.println("Connection to server sucessfully"); 
      //set the data in redis string 
      jedis.set("tutorial-name", "Redis tutorial"); 
      // Get the stored data and print it 
      System.out.println("Stored string in redis:: "+ jedis.get("tutorial-name")); 
   } 
}

现在，让我们编译并运行上面的程序。

$javac RedisStringJava.java 
$java RedisStringJava 
Connection to server sucessfully 
Stored string in redis:: Redis tutorial 

Redis Java 列表示例

import redis.clients.jedis.Jedis; 

public class RedisListJava { 
   public static void main(String[] args) { 
   
      //Connecting to Redis server on localhost 
      Jedis jedis = new Jedis("localhost"); 
      System.out.println("Connection to server sucessfully"); 
      
      //store data in redis list 
      jedis.lpush("tutorial-list", "Redis"); 
      jedis.lpush("tutorial-list", "Mongodb"); 
      jedis.lpush("tutorial-list", "Mysql"); 
      // Get the stored data and print it 
      List<String> list = jedis.lrange("tutorial-list", 0 ,5); 
      
      for(int i = 0; i<list.size(); i++) { 
         System.out.println("Stored string in redis:: "+list.get(i)); 
      } 
   } 
} 

现在，让我们编译并运行上面的程序。

$javac RedisListJava.java 
$java RedisListJava 
Connection to server sucessfully 
Stored string in redis:: Redis 
Stored string in redis:: Mongodb 
Stored string in redis:: Mysql

Redis Java 密钥示例

import redis.clients.jedis.Jedis; 

public class RedisKeyJava { 
   public static void main(String[] args) { 
   
      //Connecting to Redis server on localhost 
      Jedis jedis = new Jedis("localhost"); 
      System.out.println("Connection to server sucessfully"); 
      //store data in redis list 
      // Get the stored data and print it 
      List<String> list = jedis.keys("*"); 
      
      for(int i = 0; i<list.size(); i++) { 
         System.out.println("List of stored keys:: "+list.get(i)); 
      } 
   } 
}

现在，让我们编译并运行上面的程序。

$javac RedisKeyJava.java 
$java RedisKeyJava 
Connection to server sucessfully 
List of stored keys:: tutorial-name 
List of stored keys:: tutorial-list