http://blog.csdn.net/jeofey/article/details/73468192

SpringBoot对的支持是通过 Data  来时闲的，使用之前引入jar包：

compile('org.springframework.boot:spring-boot-starter-data-redis')

org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration为我们默认配置了JedisConnectionFactory、redisTemplate以及stringRedisTemplate，让我们直接可以使用redis作为数据存储。

org.springframework.boot.autoconfigure.data.redis.RedisProperties给我们展示了可以使用以“spring.redis”为前缀的属性在application.yml中配置redis。

例如，默认为db0，在配置文件中将其设置为db1

 

spring:  redis:    database: 1

 

1.在下载redis镜像，并运行容器

2.新建对象User

 

package com.example.demo.bean;import java.io.Serializable;/** * SpringBootDemo1 * Created by xian.juanjuan on 2017-6-19 14:15. */public class User implements Serializable{    private static final long serialVersionUID = 934073895746700367L;    private String id;    private String name;    private Integer age;    public User(Integer age, String id, String name) {        super();        this.age = age;        this.id = id;        this.name = name;    }    get,set方法省略....}

3.数据访问

 

 

package com.example.demo.dao;import com.example.demo.bean.User;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.data.redis.core.StringRedisTemplate;import org.springframework.data.redis.core.ValueOperations;import org.springframework.stereotype.Repository;import javax.annotation.Resource;/** * SpringBootDemo1 * Created by xian.juanjuan on 2017-6-19 14:17. */@Repositorypublic class UserDao {    @Autowired    StringRedisTemplate stringRedisTemplate;    @Resource(name = "stringRedisTemplate")    ValueOperations
     
       valOpsStr;    @Autowired    RedisTemplate
      
        redisTemplate;    @Resource(name = "redisTemplate")    ValueOperations
       
         valOps;    public void stringRedisTemplateDemo(){        valOpsStr.set("xx","yy");    }    public void save(User user){        valOps.set(user.getId(),user);    }    public String getString(){        return valOpsStr.get("xx");    }    public User getUser(String id){        return (User) valOps.get(id);    }}
       
      
     

4.控制器，用userDao或RedisTemplate存取数据

 

 

package com.example.demo.controller;import com.example.demo.bean.User;import com.example.demo.dao.UserDao;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;/** * SpringBootDemo1 * Created by xian.juanjuan on 2017-6-19 14:26. */@RestControllerpublic class RedisDataController {    @Autowired    UserDao userDao;    @Autowired    RedisTemplate
     
       redisTemplate;    @RequestMapping("/set")    public void set(){        User user = new User(32,"1","gg");        userDao.save(user);        userDao.stringRedisTemplateDemo();        redisTemplate.opsForValue().set("22",user);    }    @RequestMapping("/get1")    public String getString(){        return userDao.getString();    }    @RequestMapping("get2")    public User getUser(String id){        return userDao.getUser(id);    }}
     

 

浏览器调用http://127.0.0.1:8082/set接口存数据

客户端查看

 

 

接口查看：

客户端看到的数据是“乱码”，因为序列化引起，解决办法：自己配置redistemplate并定义Serializer

RedisTemplate使用的是JdkSerizationRedisSerializer,使用二级制形式存储数据，对于演示redis client不直观。

 

package com.example.demo.config;import com.fasterxml.jackson.annotation.JsonAutoDetect;import com.fasterxml.jackson.annotation.PropertyAccessor;import com.fasterxml.jackson.databind.ObjectMapper;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.serializer.Jackson2JsonRedisSerializer;import org.springframework.data.redis.serializer.StringRedisSerializer;import java.net.UnknownHostException;/** * SpringBootDemo1 * Created by xian.juanjuan on 2017-6-19 15:13. */@Configurationpublic class RedisConfig {    @Bean    public RedisTemplate
     
       redisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException{        RedisTemplate
      
        redisTemplate = new RedisTemplate<>();        redisTemplate.setConnectionFactory(redisConnectionFactory);        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);        ObjectMapper objectMapper = new ObjectMapper();        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);        redisTemplate.setKeySerializer(new StringRedisSerializer());        redisTemplate.afterPropertiesSet();        return  redisTemplate;    }}
      
     

设置value的序列化采用Jackson2JsonRedisSerializer，key的序列化采用StringRedisSerializer

 

重启项目，执行http://127.0.0.1:8082/set接口

客户端查看：

接口查看：

 

序列化问题_no suitable constructor found

com.fasterxml.jackson.databind.JsonMappingException: Can not construct instance of com.example.demo.bean.User: no suitable constructor found, can not deserialize from Object value (missing default constructor or creator, or perhaps need to add/enable type information?)

 at [Source: [B@3fbfca59; line: 1, column: 32]

User类使用时间序列化接口，使用Jackson序列化需要一个空构造，为什么？

 

public User() {}

重启项目，接口访问正常~