用Java客户端连接redis

package com.firstelite.test;

import org.junit.Test;

import redis.clients.jedis.Jedis;

public class Test4Jedis {

    @Test
    public void testTwo() {
        Jedis jedis = new Jedis("192.168.145.10");
        System.out.println("Connection to server sucessfully");
        // 查看服务是否运行
        System.out.println("Server is running: " + jedis.ping());
    }

}

非常简单，仅仅是测试一下Jedis是否连通redis服务器，运行junit后我们发现报异常了：

redis.clients.jedis.exceptions.JedisDataException: NOAUTH Authentication required.
    at redis.clients.jedis.Protocol.processError(Protocol.java:117)
    at redis.clients.jedis.Protocol.process(Protocol.java:142)
    at redis.clients.jedis.Protocol.read(Protocol.java:196)
    at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:288)
    at redis.clients.jedis.Connection.getStatusCodeReply(Connection.java:187)
    at redis.clients.jedis.BinaryJedis.ping(BinaryJedis.java:109)
    at com.firstelite.test.Test4Jedis.testTwo(Test4Jedis.java:15)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

显而易见，由于我们设置了密码但在这里又没有指定密码，所以报了和刚才相同的错误，那么如何指定密码呢？很简单

public static void main(String[] args) {
		// TODO Auto-generated method stub
		Jedis jedis = new Jedis("127.0.0.42");
		jedis.auth("123456");
        //System.out.println("Connection to server sucessfully");
        // 查看服务是否运行
        System.out.println("Server is running: " + jedis.ping());
	}

正确返回

Server is running: PONG

 

spring-data-redis设置密码

通常情况下在实际的java项目中我们会选择Spring提供的spring-data-redis来操作redis，spring的封装可以给我们提供很多便捷之处。那么spring-data-redis又是如何设置密码的呢？首先定义一个redis.properties配置文件，定义一组redis属性供spring加载使用，其中就包含密码（redis.password）：

# Redis settings  
redis.host=192.168.145.10 
redis.port=6379  
redis.password=123456
redis.timeout=100000  
redis.maxTotal=300  
redis.maxIdle=100  
redis.maxWaitMillis=1000  
redis.testOnBorrow=true  

然后在由Spring封装的JedisConnectionFactory中来设置密码属性即可，下面是完整redis配置：

总结

简单整理一下关于Redis设置密码相关的内容，希望对遇到同样问题的朋友有所帮助，The End。

下面关于Redis的文章您也可能喜欢，不妨参考下：

Ubuntu 14.04下Redis安装及简单测试 http://www.linuxidc.com/Linux/2014-05/101544.htm

Redis主从复制基本配置 http://www.linuxidc.com/Linux/2015-03/115610.htm

Redis集群明细文档 http://www.linuxidc.com/Linux/2013-09/90118.htm

Ubuntu 12.10下安装Redis（图文详解）+ Jedis连接Redis http://www.linuxidc.com/Linux/2013-06/85816.htm

Redis系列-安装部署维护篇 http://www.linuxidc.com/Linux/2012-12/75627.htm

CentOS 6.3安装Redis http://www.linuxidc.com/Linux/2012-12/75314.htm

Redis安装部署学习笔记 http://www.linuxidc.com/Linux/2014-07/104306.htm

Redis配置文件redis.conf 详解 http://www.linuxidc.com/Linux/2013-11/92524.htm

Redis 的详细介绍：请点这里 
Redis 的下载地址：请点这里

http://www.linuxidc.com/Linux/2016-09/135557.htm