springboot连接Redis的教程详解

创建springboot项目

在nosql中选择redis

项目目录

pom.xml中还需要加入下面的jar包

org.springframework.boot spring-boot-starter-json

在application.properties文件中添加redis服务器信息

spring.redis.host=192.168.5.132
spring.redis.port=6379

剩下4个test类，我直接以源码的方式粘出来，里面有些代码是非必须的，我保留了测试的验证过程，所以里面会有冗余代码。（这些代码在我github上的练习项目中也有）

package com.myspringboot.redis;

import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.context.configurableapplicationcontext;

@springbootapplication
public class demoapplication {

  public static void main(string[] args) {
    configurableapplicationcontext configurableapplicationcontext = springapplication.run(demoapplication.class, args);
    redistest redistest = configurableapplicationcontext.getbean(redistest.class);
    redistest.testredis();
  }

}

package com.myspringboot.redis;

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.stringredistemplate;
import org.springframework.data.redis.serializer.jackson2jsonredisserializer;

@configuration
public class mytemplate {

  @bean
  public stringredistemplate getmytemplate(redisconnectionfactory redisconnectionfactory){
    stringredistemplate stringredistemplate = new stringredistemplate(redisconnectionfactory);
    stringredistemplate.sethashvalueserializer(new jackson2jsonredisserializer<object>(object.class));
    return stringredistemplate;
  }
}

package com.myspringboot.redis;

import com.fasterxml.jackson.databind.objectmapper;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.beans.factory.annotation.qualifier;
import org.springframework.data.redis.connection.message;
import org.springframework.data.redis.connection.messagelistener;
import org.springframework.data.redis.connection.redisconnection;
import org.springframework.data.redis.core.hashoperations;
import org.springframework.data.redis.core.redistemplate;
import org.springframework.data.redis.core.stringredistemplate;
import org.springframework.data.redis.hash.jackson2hashmapper;
import org.springframework.data.redis.serializer.jackson2jsonredisserializer;
import org.springframework.stereotype.component;

import java.util.map;

@component
public class redistest {

  @autowired
  redistemplate redistemplate;


  @autowired
  stringredistemplate stringredistemplate;

  @autowired
  objectmapper objectmapper;

  // 自定义模板
  @autowired
  @qualifier("getmytemplate")
  stringredistemplate mystringredistemplate;

  public void testredis()  {
    //redis中直接查看时，乱码
    redistemplate.opsforvalue().set("key1", "hello1");
    system.out.println(redistemplate.opsforvalue().get("key1"));

    //redis中直接查看时，正常
    stringredistemplate.opsforvalue().set("key2", "hello2");
    system.out.println(stringredistemplate.opsforvalue().get("key2"));

    redisconnection connection = redistemplate.getconnectionfactory().getconnection();
    connection.set("key3".getbytes(), "hello3".getbytes());
    system.out.println(new string(connection.get("key3".getbytes())));

    hashoperations<string, object, object> hash = stringredistemplate.opsforhash();
    hash.put("key4", "name", "张三");
    hash.put("key4", "age", "18");
    system.out.println(hash.get("key4", "name"));
    system.out.println(hash.entries("key4"));


    stringredistemplate.sethashvalueserializer(new jackson2jsonredisserializer<object>(object.class));
    jackson2hashmapper jackson2hashmapper = new jackson2hashmapper(objectmapper, false);// true 扁平化（将对象中的参数展开）
    user user = new user();
    user.setid(123);
    user.setname("zhangsan");
    stringredistemplate.opsforhash().putall("key5", jackson2hashmapper.tohash(user));
    map map = stringredistemplate.opsforhash().entries("key5");
    user user1 = objectmapper.convertvalue(map, user.class);
    system.out.println(user1.getid());
    system.out.println(user1.getname());


    mystringredistemplate.opsforhash().putall("key6", jackson2hashmapper.tohash(user));
    map map1 = mystringredistemplate.opsforhash().entries("key6");
    user user2 = objectmapper.convertvalue(map, user.class);
    system.out.println(user2.getid());
    system.out.println(user2.getname());


    //发布订阅
    mystringredistemplate.convertandsend("qunliao", "hello");

    redisconnection connection1 = mystringredistemplate.getconnectionfactory().getconnection();
    connection1.subscribe(new messagelistener() {
      @override
      public void onmessage(message message, byte[] bytes) {
        byte[] body = message.getbody();
        system.out.println(new string(body));
      }
    }, "qunliao".getbytes());


    while (true){
      mystringredistemplate.convertandsend("qunliao", "hello");
      try {
        thread.sleep(3000);
      } catch (interruptedexception e) {
        e.printstacktrace();
      }
    }
  }
}

package com.myspringboot.redis;

public class user {
  private int id;
  private string name;

  public int getid() {
    return id;
  }

  public void setid(int id) {
    this.id = id;
  }

  public string getname() {
    return name;
  }

  public void setname(string name) {
    this.name = name;
  }
}

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