springboot整合redis集羣+jackson

springboot整合redis集羣

集羣部署看另一篇文章 https://blog.csdn.net/qq_42011565/article/details/101546523

項目圖：

整合開始
1.導入pom.xml依賴

<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>szw</groupId>
    <artifactId>springboot_redis_sentinel</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot_redis_sentinel</name>
    <description>springboot整合redis哨兵</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <start-class>com.sze.redis.SzwRedisApplication</start-class>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.RELEASE</version>
        <relativePath></relativePath>
    </parent>

    <dependencies>
        <!-- 使用web啓動器 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- 使用aop模板啓動器 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
        <!-- 測試 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- redis緩存 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.49</version>
        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>nexus-aliyun</id>
            <name>Nexus aliyun</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>nexus-aliyun</id>
            <name>Nexus aliyun</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

    <build>
        <plugins>
            <!-- 要將源碼放上去，需要加入這個插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-source-plugin</artifactId>
                <configuration>
                    <attach>true</attach>
                </configuration>
                <executions>
                    <execution>
                        <phase>compile</phase>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <!-- 打包 -->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

2.配置依賴文件application.proterties

##單服務器
# Redis服務器地址
#spring.redis.host=112.74.37.85
# Redis服務器連接端口
#spring.redis.port=6379
# Redis服務器連接密碼（默認爲空）
#spring.redis.password=


#集羣
spring.redis.cluster.nodes=112.74.37.85:7001,112.74.37.85:7002,112.74.37.85:7003,112.74.37.85:7004,112.74.37.85:7005,112.74.37.85:7006
## 連接池最大連接數（使用負值表示沒有限制）
spring.redis.pool.max-active=300
## Redis數據庫索引(默認爲0)
spring.redis.database=0
## 連接池最大阻塞等待時間（使用負值表示沒有限制）
spring.redis.pool.max-wait=-1
## 連接池中的最大空閒連接
spring.redis.pool.max-idle=100
## 連接池中的最小空閒連接
spring.redis.pool.min-idle=20
## 連接超時時間（毫秒）
spring.redis.timeout=60000

3.實體類Student

package cn.zds.redis_demo.pojo;


import java.io.Serializable;

public class Student implements Serializable {
    private  Integer id;
    private  String name;
    private  String studentNo;

    public Student(Integer id, String name, String studentNo) {
        this.id = id;
        this.name = name;
        this.studentNo = studentNo;
    }

    public Student() {

    }

    @Override
    public String toString() {
        return "Student{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", studentNo='" + studentNo + '\'' +
                '}';
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setStudentNo(String studentNo) {
        this.studentNo = studentNo;
    }

    public Integer getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getStudentNo() {
        return studentNo;
    }
}

注意點，因爲使用了jackson，所以實體類提供空構造方法

4.redisService封裝

package cn.zds.redis_demo.service;


import java.util.Set;
import java.util.concurrent.TimeUnit;

import com.fasterxml.jackson.databind.ObjectMapper;
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;

import javax.annotation.PostConstruct;

/**
 * RedisService
 */
@Component
public class RedisService {
    @Autowired
    StringRedisTemplate redisTemplate; //操作redis服務

    @Autowired
    private ObjectMapper objectMapper; //jackson

    ValueOperations<String, String> stringRedis;

    @PostConstruct
    public void init(){
        stringRedis=redisTemplate.opsForValue();
    }

    public void setString (String key,String Value){
        stringRedis.set(key, Value);
    }
    public String getString (String key){
        String value = stringRedis.get(key);
        return   value;
    }
    public <T> T getObject (String key,Class<T> valueType) throws  Exception{
        String objectJson = stringRedis.get(key);//拿redis數據
        T t=null;
        try {
           t = objectMapper.readValue( objectJson,valueType);//轉成傳入的student類型
        }catch (Exception e){
             t=null;
             System.err.println(e);
        }

        return   t;
    }
    public void setObject (String key,Object Value)throws  Exception{
        String studentJson = objectMapper.writeValueAsString( Value);
        stringRedis.set(key, studentJson);

    }
}

5.啓動器

package cn.zds.redis_demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

6.測試

package cn.zds.redis_demo;

import cn.zds.redis_demo.pojo.Student;
import cn.zds.redis_demo.service.RedisService;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.test.context.junit4.SpringRunner;


import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@RunWith(SpringRunner.class)
@SpringBootTest(classes = {Application.class})
public class redisAndJacksonTest {
    @Autowired
    RedisService redisService;

    /**
     * 注意點，pojo需要實現無參構造
     * @throws Exception
     */

    //object
    @Test
    public void setOrGetObject ()throws  Exception{

        Student zds = new Student(10086, "zds02", "10014");
        redisService.setObject(zds.getName(),zds);

        Student name = redisService.getObject("zds02", Student.class);
        System.err.println(name);

    }
    //list
    @Test
    public void getOrSetList ()throws  Exception{
        List<Student> students= new ArrayList<>();
        Student zds = new Student(10086, "zds02", "10014");
        Student zds2 = new Student(100861, "zds023", "100144");
        students.add(zds);
        students.add(zds2);
        redisService.setObject("list",students);

        ArrayList<Student> list = redisService.getObject("list", ArrayList.class);

        System.err.println(list);

    }
    //map
    @Test
    public void getOrSetMap ()throws  Exception{
        Map<String,Object> students= new HashMap<>();
        Student zds = new Student(10086, "zds02", "10014");
        Student zds2 = new Student(100861, "zds023", "100144");
        students.put(zds.getName(),zds);
        students.put(zds2.getName(),zds2);
        redisService.setObject("map",students);

        HashMap<String,Object> map = redisService.getObject("map", HashMap.class);

        System.err.println(map);

    }
}