无涯教程-Redis - Java连接

无涯教程
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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，您可以查看无涯教程的Java教程，以在计算机上安装Java。

现在，看看如何设置Redis Java驱动程序。

  • 您需要从路径下载jedis.jar。确保下载它的最新版本。

  • 您需要将 jedis.jar 包含到类路径中。

连接到Redis服务器

import redis.clients.jedis.Jedis; 

public class RedisJava {
public static void main(String[] args) {
//连接到本地主机上的 Redis 服务器
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，让无涯教程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，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，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) {


  </span><span class="com">//Connecting to Redis server on localhost </span><span class="pln">
  </span><span class="typ">Jedis</span><span class="pln"> jedis </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">Jedis</span><span class="pun">(</span><span class="str">"localhost"</span><span class="pun">);</span><span class="pln"> 
  </span><span class="typ">System</span><span class="pun">.</span><span class="kwd">out</span><span class="pun">.</span><span class="pln">println</span><span class="pun">(</span><span class="str">"Connection to server sucessfully"</span><span class="pun">);</span><span class="pln"> 
  
  </span><span class="com">//store data in redis list </span><span class="pln">
  jedis</span><span class="pun">.</span><span class="pln">lpush</span><span class="pun">(</span><span class="str">"tutorial-list"</span><span class="pun">,</span><span class="pln"> </span><span class="str">"Redis"</span><span class="pun">);</span><span class="pln"> 
  jedis</span><span class="pun">.</span><span class="pln">lpush</span><span class="pun">(</span><span class="str">"tutorial-list"</span><span class="pun">,</span><span class="pln"> </span><span class="str">"Mongodb"</span><span class="pun">);</span><span class="pln"> 
  jedis</span><span class="pun">.</span><span class="pln">lpush</span><span class="pun">(</span><span class="str">"tutorial-list"</span><span class="pun">,</span><span class="pln"> </span><span class="str">"Mysql"</span><span class="pun">);</span><span class="pln"> 
  </span><span class="com">//Get the stored data and print it </span><span class="pln">
  </span><span class="typ">List</span><span class="pun">&lt;</span><span class="typ">String</span><span class="pun">&gt;</span><span class="pln"> list </span><span class="pun">=</span><span class="pln"> jedis</span><span class="pun">.</span><span class="pln">lrange</span><span class="pun">(</span><span class="str">"tutorial-list"</span><span class="pun">,</span><span class="pln"> </span><span class="lit">0</span><span class="pln"> </span><span class="pun">,</span><span class="lit">5</span><span class="pun">);</span><span class="pln"> 
  
  </span><span class="kwd">for</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> i </span><span class="pun">=</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln"> i</span><span class="pun">&lt;</span><span class="pln">list</span><span class="pun">.</span><span class="pln">size</span><span class="pun">();</span><span class="pln"> i</span><span class="pun">++)</span><span class="pln"> </span><span class="pun">{</span><span class="pln"> 
     </span><span class="typ">System</span><span class="pun">.</span><span class="kwd">out</span><span class="pun">.</span><span class="pln">println</span><span class="pun">(</span><span class="str">"Stored string in redis:: "</span><span class="pun">+</span><span class="pln">list</span><span class="pun">.</span><span class="kwd">get</span><span class="pun">(</span><span class="pln">i</span><span class="pun">));</span><span class="pln"> 
  </span><span class="pun">}</span><span class="pln"> 



}
}

现在，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键示例

import redis.clients.jedis.Jedis; 

public class RedisKeyJava {
public static void main(String[] args) {


  </span><span class="com">//Connecting to Redis server on localhost </span><span class="pln">
  </span><span class="typ">Jedis</span><span class="pln"> jedis </span><span class="pun">=</span><span class="pln"> </span><span class="kwd">new</span><span class="pln"> </span><span class="typ">Jedis</span><span class="pun">(</span><span class="str">"localhost"</span><span class="pun">);</span><span class="pln"> 
  </span><span class="typ">System</span><span class="pun">.</span><span class="kwd">out</span><span class="pun">.</span><span class="pln">println</span><span class="pun">(</span><span class="str">"Connection to server sucessfully"</span><span class="pun">);</span><span class="pln"> 
  </span><span class="com">//store data in redis list </span><span class="pln">
  </span><span class="com">//Get the stored data and print it </span><span class="pln">
  </span><span class="typ">List</span><span class="pun">&lt;</span><span class="typ">String</span><span class="pun">&gt;</span><span class="pln"> list </span><span class="pun">=</span><span class="pln"> jedis</span><span class="pun">.</span><span class="pln">keys</span><span class="pun">(</span><span class="str">"*"</span><span class="pun">);</span><span class="pln"> 
  
  </span><span class="kwd">for</span><span class="pun">(</span><span class="kwd">int</span><span class="pln"> i </span><span class="pun">=</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln"> i</span><span class="pun">&lt;</span><span class="pln">list</span><span class="pun">.</span><span class="pln">size</span><span class="pun">();</span><span class="pln"> i</span><span class="pun">++)</span><span class="pln"> </span><span class="pun">{</span><span class="pln"> 
     </span><span class="typ">System</span><span class="pun">.</span><span class="kwd">out</span><span class="pun">.</span><span class="pln">println</span><span class="pun">(</span><span class="str">"List of stored keys:: "</span><span class="pun">+</span><span class="pln">list</span><span class="pun">.</span><span class="kwd">get</span><span class="pun">(</span><span class="pln">i</span><span class="pun">));</span><span class="pln"> 
  </span><span class="pun">}</span><span class="pln"> 



}
}

现在，让无涯教程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

参考链接

www.learnfk.com/redis/redis…

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