本章注意讲解spring cloud微服务集成redis，本章节依赖前面章节。

讲解开始前的准备如下：

    一、先新建一个公共的Maven Project项目，项目名称为module-common，参考第一章节步骤创建。

    二、右键module-common，在该项目下创建一个Maven Module项目，项目名称为module-common-api。

项目结构图如下：

1）module-common项目下pom.xml配置：

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  
  <groupId>com.maven.xm</groupId>
  <artifactId>module-common</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  
  <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>1.5.2.RELEASE</version>
  </parent>
  
  <properties>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
      <java.version>1.8</java.version>
      <spring.cloud.dependencies.version>Camden.SR7</spring.cloud.dependencies.version>
      <io.springfox>2.7.0</io.springfox>
  </properties>
  
  <dependencyManagement>
       <dependencies>
           <dependency>
               <groupId>org.springframework.cloud</groupId>
               <artifactId>spring-cloud-dependencies</artifactId>
               <version>${spring.cloud.dependencies.version}</version>
               <type>pom</type>
               <scope>import</scope>
           </dependency>
           
       </dependencies>
   </dependencyManagement>
   
   <build>
	    <plugins>
	        <plugin>
	            <groupId>org.apache.maven.plugins</groupId>
	            <artifactId>maven-surefire-plugin</artifactId>
	            <configuration>
	            	<source>${java.version}</source>
                  	<target>${java.version}</target>
                  	<encoding>UTF-8</encoding>
                  	<skipTests>true</skipTests>
	            </configuration>
	        </plugin>
	    </plugins>
	</build>
    
    <repositories>
	    <repository>
	      	<id>central</id>
	      	<name>Central Repository</name>
	      	<url>https://repo.maven.apache.org/maven2</url>
	      	<layout>default</layout>
	      	<snapshots>
	        	<enabled>false</enabled>
	      	</snapshots>
	    </repository>
	 </repositories>
	 
    <modules>
    	<module>module-common-api</module>
    </modules>
</project>

2）module-common-api项目下pom.xml文件配置：

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  
  <parent>
    <groupId>com.maven.xm</groupId>
    <artifactId>module-common</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>module-common-api</artifactId>
  <packaging>jar</packaging>
  
  	<dependencies>
  		<!-- redis集成jar -->
        <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        
	</dependencies>
  
</project>

3）module-common-api项目下RedisConfiguration.java文件内容：

注意：该文件为redis操作的主要工具类

package com.maven.xm.redis;

import java.net.UnknownHostException;

import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;

/**
 * redis 工具类
 * @author ouyangjun
 * 
 */
@Configuration
public class RedisConfiguration {
	
	@Bean
	@ConditionalOnMissingBean(name="redisTemplate")
	public RedisTemplate<Object, Object> redisTemplate(
			RedisConnectionFactory redisConnectionFactory) 
					throws UnknownHostException{
		RedisTemplate<Object, Object> template = new RedisTemplate<Object,Object>();
		template.setConnectionFactory(redisConnectionFactory);
		return template;
	}
	
	@Bean
	@ConditionalOnMissingBean(StringRedisTemplate.class)
	public StringRedisTemplate stringRedisTemplate(
			RedisConnectionFactory redisConnectionFactory) 
					throws UnknownHostException{
		StringRedisTemplate template = new StringRedisTemplate();
		template.setConnectionFactory(redisConnectionFactory);
		return template;
	}
	
}

4）module-common-api项目下RedisStringUtils.java文件内容：

注意：该文件为redis字符操作工具类，其它工具类就不一一展示了，有需要请下载源码观看

package com.maven.xm.redis;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Component;

/**
 * redis string操作工具类
 * @author ouyangjun
 *
 */
@Component
public class RedisStringUtils {
	
    @Autowired
    private StringRedisTemplate template;
 
    public void setKey(String key,String value){
        ValueOperations<String, String> ops = template.opsForValue();
        ops.set(key,value);
    }
 
    public String getValue(String key){
        ValueOperations<String, String> ops = template.opsForValue();
        return ops.get(key);
    }
    
}

5）调整module-oauth-resources下pom.xml文件，新增以下内容：

<dependency>
    <groupId>com.maven.xm</groupId>
    <artifactId>module-common-api</artifactId>
    <version>0.0.1-SNAPSHOT</version>
</dependency>

6）调整module-oauth-resources下applicaion.properties文件，新增以下内容：

#redis
spring.redis.database = 0
spring.redis.host = 127.0.0.1
spring.redis.port = 6379
spring.redis.password = 
spring.redis.encode=UTF-8
spring.redis.timeout = 6000
spring.redis.pool.max-active = 100
spring.redis.pool.max-wait = -1
spring.redis.pool.max-idle = 10
spring.redis.pool.min-idle = 5

7）调整module-oauth-resources下DemoController类，调整之后的代码如下：

package com.maven.xm.oauth.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import com.maven.xm.redis.RedisStringUtils;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;

@Api(tags = "module-oauth模块,用户Demo Controller")
@RestController
@RequestMapping(value = "/demo")
public class DemoController {
	
	@Autowired
	private RedisStringUtils redisString;
	
	@ApiOperation(value="module模块,Test方法", notes="Test")
	@RequestMapping(value = "/hello", method = RequestMethod.GET)
	public String hello(){
		// redis操作
		redisString.setKey("hello", "Hello Redis!");
		
		return "Hello Demo ouyangjun!";
	}
	
}

8） 依次启动EurekaServerApplication、WebApplication、OAuthApplication模块

       注意：启动前，一定要先启动redis-server.exe，否则会访问报错。

      在浏览器中输入：http://localhost:8762/xm/demo/ribbon/hello

                                   或

                                   http://localhost:8762/xm/demo/fegin/hello

      展示成功界面之后，想判断redis是否已经存在当前的key了，

      请参考redis简单命令操作，地址：https://blog.csdn.net/p812438109/article/details/80961169

本章功能已实现完，待续！

源码下载地址: https://gitee.com/ouyangjun_xm/springcloud/attach_files下chapter-five.rar压缩包

                      码云账户: oyj812438109@163.com     密码: oyj812438109@163.com

                      请勿恶意操作，谢谢！

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