Redis主从加哨兵的部署详见http://www.cnblogs.com/dupang/p/6414365.html

spring-data-redis和jedis集成代码总体结构

代码地址https://github.com/dupang/redistestwithspring

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>redistest</groupId>
<artifactId>springredis</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>springredis Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<springframework.version>4.3.6.RELEASE</springframework.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.8.0.RELEASE</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
</dependencies>
<build>
<finalName>springredis</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>

RedisTest.java

package com.dupang.redis;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext; /**
* Created by Administrator on 2017/2/17.
*/
public class RedisTest {
public static void main(String[] args) {
ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:/spring-redisSentine.xml");
RedisUtil redisUtil = (RedisUtil) ac.getBean("redisUtil");
String ss = redisUtil.get("user.uid.1");
System.out.printf(ss);
}
}

RedisUtil.java

package com.dupang.redis;

import org.springframework.data.redis.core.StringRedisTemplate;

import java.util.concurrent.TimeUnit;

public class RedisUtil {

    private StringRedisTemplate redisTemplate;

    public RedisUtil(StringRedisTemplate redisTemplate) {
this.redisTemplate = redisTemplate;
} public Boolean add(String key,String value){
Boolean rt=Boolean.FALSE;
rt=redisTemplate.boundValueOps(key).setIfAbsent(value);
if(rt) {
redisTemplate.expire(key, 30L, TimeUnit.MINUTES);
}
return rt;
} public Boolean add(String key,String value,long expire,TimeUnit timeUnit){
Boolean rt=Boolean.FALSE;
rt=redisTemplate.boundValueOps(key).setIfAbsent(value);
if(rt) {
redisTemplate.expire(key, expire, timeUnit);
}
return rt;
} public String get(String key){
return redisTemplate.boundValueOps(key).get();
} public void delete(String key){
redisTemplate.delete(key);
} public String getAndRemove(String key){
String rt=redisTemplate.boundValueOps(key).get();
redisTemplate.delete(key);
return rt;
} public Boolean hasKey(String key){
return redisTemplate.hasKey(key);
} }

spring-redisSentine.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:redis="http://www.springframework.org/schema/redis"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
http://www.springframework.org/schema/redis
http://www.springframework.org/schema/redis/spring-redis-1.0.xsd">
<context:property-placeholder location="classpath:app.properties" />
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<!-- 最大空闲连接数 -->
<property name="maxIdle" value="${redis.adapter.maxIdle}" />
<!-- 最小空闲连接数 -->
<property name="minIdle" value="${redis.adapter.minIdle}" />
<!-- 在获取连接的时候检查有效性 -->
<property name="testOnBorrow" value="${redis.adapter.testOnBorrow}" />
<!-- return 一个jedis实例给pool时,是否检查连接可用性 (ping()) -->
<property name="testOnReturn" value="${redis.adapter.testOnReturn}" />
<!-- idle状态监测用异步线程evict进行检查, -->
<property name="testWhileIdle" value="${redis.adapter.testWhileIdle}" />
<!-- 一次最多evict的pool里的jedis实例个数 -->
<property name="numTestsPerEvictionRun" value="${redis.adapter.numTestsPerEvictionRun}" />
<!-- test idle 线程的时间间隔 -->
<property name="timeBetweenEvictionRunsMillis" value="${redis.adapter.timeBetweenEvictionRunsMillis}" />
</bean> <bean id="sentinelConfig"
class="org.springframework.data.redis.connection.RedisSentinelConfiguration">
<!-- master名称 sentinel.conf里面配置的主节点名称 -->
<constructor-arg name="master" value="${redis.adapter.masterName}" />
<!-- sentinel的ip和端口列表 -->
<constructor-arg name="sentinelHostAndPorts">
<set>
<value>${redis.adapter.sentinel1}</value>
<value>${redis.adapter.sentinel2}</value>
<value>${redis.adapter.sentinel3}</value>
</set>
</constructor-arg>
</bean> <bean id="jedisConnectionFactory"
class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<constructor-arg ref="sentinelConfig" />
<constructor-arg ref="jedisPoolConfig" />
</bean> <bean id="stringRedisSerializer" class="org.springframework.data.redis.serializer.StringRedisSerializer"/> <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
<property name="connectionFactory" ref="jedisConnectionFactory" />
</bean> <bean id="redisUtil" class="com.dupang.redis.RedisUtil">
<constructor-arg name="redisTemplate" ref="redisTemplate"/>
</bean> </beans>

app.properties

#redis
redis.adapter.maxIdle=
redis.adapter.minIdle=
redis.adapter.testOnBorrow=true
redis.adapter.testOnReturn=true
redis.adapter.testWhileIdle=true
redis.adapter.numTestsPerEvictionRun=
redis.adapter.timeBetweenEvictionRunsMillis=
redis.adapter.masterName=mymaster
redis.adapter.sentinel1=127.0.0.1:
redis.adapter.sentinel2=127.0.0.1:
redis.adapter.sentinel3=127.0.0.1:

遇到的问题

在运行测试类时报错,内容如下

/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/bin/java -Didea.launcher.port=7533 "-Didea.launcher.bin.path=/Applications/IntelliJ IDEA.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_112.jdk/Contents/Home/lib/tools.jar:/Users/duguanxin/IdeaProjects/redistestwithspring/target/classes:/Users/duguanxin/.m2/repository/org/springframework/spring-context/4.3.6.RELEASE/spring-context-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-aop/4.3.6.RELEASE/spring-aop-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-beans/4.3.6.RELEASE/spring-beans-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-core/4.3.6.RELEASE/spring-core-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/commons-logging/commons-logging/1.2/commons-logging-1.2.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-expression/4.3.6.RELEASE/spring-expression-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-context-support/4.3.6.RELEASE/spring-context-support-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-tx/4.3.6.RELEASE/spring-tx-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-web/4.3.6.RELEASE/spring-web-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/junit/junit/4.12/junit-4.12.jar:/Users/duguanxin/.m2/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-test/4.3.6.RELEASE/spring-test-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/data/spring-data-redis/1.8.0.RELEASE/spring-data-redis-1.8.0.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/data/spring-data-keyvalue/1.2.0.RELEASE/spring-data-keyvalue-1.2.0.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/data/spring-data-commons/1.13.0.RELEASE/spring-data-commons-1.13.0.RELEASE.jar:/Users/duguanxin/.m2/repository/org/springframework/spring-oxm/4.3.6.RELEASE/spring-oxm-4.3.6.RELEASE.jar:/Users/duguanxin/.m2/repository/org/slf4j/slf4j-api/1.7.22/slf4j-api-1.7.22.jar:/Users/duguanxin/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.22/jcl-over-slf4j-1.7.22.jar:/Users/duguanxin/.m2/repository/redis/clients/jedis/2.9.0/jedis-2.9.0.jar:/Users/duguanxin/.m2/repository/org/apache/commons/commons-pool2/2.4.2/commons-pool2-2.4.2.jar:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar" com.intellij.rt.execution.application.AppMain com.dupang.redis.RedisTest
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
二月 19, 2017 10:34:30 上午 redis.clients.jedis.JedisSentinelPool initSentinels
信息: Trying to find master from available Sentinels...
二月 19, 2017 10:34:35 上午 redis.clients.jedis.JedisSentinelPool initSentinels
警告: Cannot get master address from sentinel running @ 192.168.2.101:26379. Reason: redis.clients.jedis.exceptions.JedisDataException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.. Trying next one.
二月 19, 2017 10:34:35 上午 redis.clients.jedis.JedisSentinelPool initSentinels
警告: Cannot get master address from sentinel running @ 192.168.2.101:26389. Reason: redis.clients.jedis.exceptions.JedisDataException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.. Trying next one.
二月 19, 2017 10:34:35 上午 redis.clients.jedis.JedisSentinelPool initSentinels
警告: Cannot get master address from sentinel running @ 192.168.2.101:26399. Reason: redis.clients.jedis.exceptions.JedisDataException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.. Trying next one.
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jedisConnectionFactory' defined in class path resource [spring-redisSentine.xml]: Invocation of init method failed; nested exception is redis.clients.jedis.exceptions.JedisConnectionException: All sentinels down, cannot determine where is mymaster master is running...
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at com.dupang.redis.RedisTest.main(RedisTest.java:11)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: All sentinels down, cannot determine where is mymaster master is running...
at redis.clients.jedis.JedisSentinelPool.initSentinels(JedisSentinelPool.java:180)
at redis.clients.jedis.JedisSentinelPool.<init>(JedisSentinelPool.java:95)
at redis.clients.jedis.JedisSentinelPool.<init>(JedisSentinelPool.java:76)
at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.createRedisSentinelPool(JedisConnectionFactory.java:263)
at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.createPool(JedisConnectionFactory.java:248)
at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.afterPropertiesSet(JedisConnectionFactory.java:237)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
... 17 more Process finished with exit code 1

居然报所有哨兵都down掉的错误,而我确认所有这些哨兵都正常着,百度看看,说是防火墙的问题。但是我的防火墙就没开,看来也不是这个问题。后来发现了上面打印的警告信息。

Cannot get master address from sentinel running @ 192.168.2.101:26399. Reason: redis.clients.jedis.exceptions.JedisDataException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.. Trying next one

这是因为哨兵的配置文件里的保护模式启动了。所以又因为没有绑定可以访问的ip和设置访问密码,就不允许从外部访问。

我们的哨兵明明是127的地址,应该访问127.0.0.1:26379才对啊,这是因为redis内部把127的地址转换成了192.168.2.101了,也就是你的本机的ip地址。所以访问192的地址就相当于从外部访问你的哨兵。

根据它的1,2,3,4的提示,你只要满足其中一个就行。于是我就把三个哨兵的sentinel.conf配置文件中的保护模式改为禁用就行了

# *** IMPORTANT ***
#
# By default Sentinel will not be reachable from interfaces different than
# localhost, either use the 'bind' directive to bind to a list of network
# interfaces, or disable protected mode with "protected-mode no" by
# adding it to this configuration file.
#
# Before doing that MAKE SURE the instance is protected from the outside
# world via firewalling or other means.
#
# For example you may use one of the following:
#
# bind 127.0.0.1 192.168.1.1
#
protected-mode no

这样再访问就ok了。

插播个广告


老丈人家的粉皮儿,农产品,没有乱七八糟的添加剂,欢迎惠顾
 

spring-data-redis,jedis和redis主从集成和遇到的问题的更多相关文章

  1. Spring Data JPA系列2:SpringBoot集成JPA详细教程,快速在项目中熟练使用JPA

    大家好,又见面了. 这是Spring Data JPA系列的第2篇,在上一篇<Spring Data JPA系列1:JDBC.ORM.JPA.Spring Data JPA,傻傻分不清楚?给你个 ...

  2. Redis-07.Spring Data整合Jedis

    Spring整合Jedis 1.单实例(想节约时间的请直接拖到下面跳过1.2部分) step1:毫无疑问,首先需要在pom.xml中配置Jedis依赖 <dependency> <g ...

  3. 征服 Redis + Jedis + Spring (一)—— 配置&常规操作(GET SET DEL)

    有日子没写博客了,真的是忙得要疯掉. 完成项目基础架构搭建工作,解决了核心技术问题,接着需要快速的调研下基于Spring框架下的Redis操作. 相关链接: 征服 Redis 征服 Redis + J ...

  4. 征服 Redis + Jedis + Spring (三)—— 列表操作【转】

    一开始以为Spring下操作哈希表,列表,真就是那么土.恍惚间发现“stringRedisTemplate.opsForList()”的强大,抓紧时间恶补下. 相关链接: 征服 Redis 征服 Re ...

  5. 使用Spring Data Redis时,遇到的几个问题

    需求: 1,保存一个key-value形式的结构到redis 2,把一个对象保存成hash形式的结构到redis 代码如下: // 保存key-value值         pushFrequency ...

  6. springboot(七).springboot整合jedis实现redis缓存

    我们在使用springboot搭建微服务的时候,在很多时候还是需要redis的高速缓存来缓存一些数据,存储一些高频率访问的数据,如果直接使用redis的话又比较麻烦,在这里,我们使用jedis来实现r ...

  7. Java 使用Jedis连接Redis数据库(-)

    redis 安装: Linux 安装redis 1)下载jar包: 使用Jedis需要以下两个jar包: jedis-2.8.0.jar commons-pool2-2.4.2.jar 2)测试red ...

  8. 【ORM框架】Spring Data JPA(一)-- 入门

    本文参考:spring Data JPA入门   [原创]纯干货,Spring-data-jpa详解,全方位介绍  Spring Data JPA系列教程--入门 一.Spring Data JPA介 ...

  9. Spring Data JPA系列3:JPA项目中核心场景与进阶用法介绍

    大家好,又见面了. 到这里呢,已经是本SpringData JPA系列文档的第三篇了,先来回顾下前面两篇: 在第1篇<Spring Data JPA系列1:JDBC.ORM.JPA.Spring ...

  10. Spring Data JPA系列4——Spring声明式数事务处理与多数据源支持

    大家好,又见面了. 到这里呢,已经是本SpringData JPA系列文档的第四篇了,先来回顾下前面三篇: 在第1篇<Spring Data JPA系列1:JDBC.ORM.JPA.Spring ...

随机推荐

  1. 面向对象程序设计第三次作业-Calculator

    题目: 最终代码: Scan.h: Print.h: Calaulator.cpp: 解题过程 看到题目后,在查询之后明白了这是多文件的题目,然后通过翁凯老师的视频讲解知道了.h和.cpp文件的区别和 ...

  2. 第三次作业---excel导入数据库及显示

    好吧首先承认这次作业失败了,而且我并不知道原因.另外,我也没有采用PowerDesigner 设计所需要的数据库,代码就用了全部的时间.感觉自己就像一个刚学会爬着走路的小孩去参加一百一十米跨栏,能不能 ...

  3. 【动态规划】POJ-3616

    一.题目 Description Bessie is such a hard-working cow. In fact, she is so focused on maximizing her pro ...

  4. EF 小数位的保留

    问题描述:当采用EF的DbContext保存decimal类型数据到数据库,默认只会保存小数点后的前2位小数,其余均置0:例如保存101.182352152322,实际存到数据库里的数据为101.18 ...

  5. AG-Admin微服务框架入门

    AG-Admin微服务框架入门  @qq群:一群: 837736451  二群 169824183 一 概要介绍 AG-Admin后台地址:https://gitee.com/minull/ace-s ...

  6. Robot Framework 教程 (2) - 页面元素定位

    上一篇文章中,简单模拟了一个baidu搜索并截图的过程,在搜索过程中,我们需要对搜索框.搜索按钮进行定位.本篇文章主要介绍一下具体的定位方法. 我们的脚本如下: *** Settings *** Li ...

  7. js中的php rand函数

    //文件rand.js function MyRand(min, max){ this.min = min; this.max = max; } MyRand.prototype.getRand = ...

  8. Json的JsonValueProcessor方法

    将对象转换成字符串,是非常常用的功能,尤其在WEB应用中,使用 JSON lib 能够便捷地完成这项工作. JSON lib能够将Java对象转成json格式的字符串,也可以将Java对象转换成xml ...

  9. Python Matplotlib绘图库 安装

    一般我们在做科学计算的时候,首先会想到的是matlab,但是呢,一想到matlab安装包那么大,我就有点不想说什么了. Matplotlib 是python最著名的绘图库,它提供了一整套和matlab ...

  10. Java Queue 专题

    关于java中的Queue,经常用到,做个总结 Queue是一种很常见的数据结构类型,在java里面Queue是一个接口,它只是定义了一个基本的Queue应该有哪些功能规约. (Java中的集合包括三 ...