Redis Java

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  Java with Redis

  在Java程序中开始使用Redis之前，需要确保已在计算机上设置了Redis Java驱动程序和Java。您可以查看我们的Java教程，以在计算机上安装Java。
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  安装

  现在，让我们看看如何设置Redis Java驱动程序。

  • 您需要下载jedis.jar。确保下载最新版本。
  • 您需要将jedis.jar包含到您的类路径中。
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  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，以测试与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
  

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  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 
  

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  Redis Java 列表（list）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
  

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  Redis Java 键（key）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