SpringBoot Redis配置Fastjson进行序列化和反序列化实现

时间:2021-04-02 人气:0

FastJson是阿里开源的一个高性能的JSON框架，FastJson数据处理速度快，无论序列化（把JavaBean对象转化成Json格式的字符串）和反序列化（把JSON格式的字符串转化为Java Bean对象），都是当之无愧的fast；功能强大（支持普通JDK类，包括javaBean, Collection, Date 或者enum）；零依赖（没有依赖其他的任何类库）。

1、写一个自定义序列化类

/**
 * 自定义序列化类
 * @param <T>
 */
public class FastJsonRedisSerializer<T> implements RedisSerializer<T> {

  public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
  private Class<T> clazz;

  public FastJsonRedisSerializer(Class<T> clazz) {
    super();
    this.clazz = clazz;
  }

  @Override
  public byte[] serialize(T t) throws SerializationException {
    if (null == t) {
      return new byte[0];
    }
    return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
  }

  @Override
  public T deserialize(byte[] bytes) throws SerializationException {
    if (null == bytes || bytes.length <= 0) {
      return null;
    }
    String str = new String(bytes, DEFAULT_CHARSET);
    return (T) JSON.parseObject(str, clazz);
  }

}

2、写一个Redis配置类

@Configuration
public class RedisConfiguration {

  @Bean
  public RedisTemplate<Object, Object> redisTemplate(
      RedisConnectionFactory redisConnectionFactory) {
    RedisTemplate<Object, Object> template = new RedisTemplate<>();
    //使用fastjson序列化
    FastJsonRedisSerializer fastJsonRedisSerializer = new FastJsonRedisSerializer(Object.class);
    // value值的序列化采用fastJsonRedisSerializer
    template.setValueSerializer(fastJsonRedisSerializer);
    template.setHashValueSerializer(fastJsonRedisSerializer);
    // key的序列化采用StringRedisSerializer
    template.setKeySerializer(new StringRedisSerializer());
    template.setHashKeySerializer(new StringRedisSerializer());
    template.setConnectionFactory(redisConnectionFactory);
    return template;
  }
}

3、Student类

@Data
public class Student {
  private Integer studentId;
  private String studentName;
}

4、pom.xml引入redis和fastjson的依赖，application.yml配置文件别忘了配置Redis的地址。

5、BootRedisApplication启动类

@SpringBootApplication
public class BootRedisApplication {

  public static void main(String[] args) {
    ConfigurableApplicationContext
        context = SpringApplication.run(BootRedisApplication.class, args);
    
    Student student = new Student();
    student.setStudentId(101);
    student.setStudentName("学生A");
    
    RedisTemplate cRedisTemplate = context.getBean("redisTemplate", RedisTemplate.class);
    cRedisTemplate.opsForValue().set("student-1", student);

    context.close();
  }
}

6、查看Redis的数据

{"@type":"com.example.bootredis.Student","studentId":101,"studentName":"学生A"}

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