Redis之Hash类型操作

接口IRedisDaoHash：

package com.net.test.redis.base.dao;

import com.net.test.redis.base.entity.UserPsg;

/**
 * @author ***
 * @Time：2017年8月9日 下午1:43:23
 * @version 1.0
 * @description redis的哈希操作
 */
public interface IRedisDaoHash {
        
    public void set(String key,UserPsg psg);
    public void get(String key,String hKye);
    public void setClazz(String key,Object cls);
    
    public void getKeys(String key);
    public void getValues(String key);
    
    public void length(String key);
    public void exists(String key,String hashKey);
    public void delete(String key, Object...hashKeys);
    
}

 

实现类：

package com.net.test.redis.base.dao.imp;

import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

import com.net.test.redis.base.dao.IRedisDaoHash;
import com.net.test.redis.base.entity.UserPsg;
import com.net.test.redis.base.until.ClassInfo;

/**
 * @author ***
 * @Time：2017年8月9日 下午2:04:54
 * @version 1.0
 * @description
 */
@Component
public class RedisDaoHashImp implements IRedisDaoHash {
    
    @Autowired
    private RedisTemplate<String, String>  redis;
    
    /**
     * @description 设置hash的键、属性和值。此方法写的比较死，无法做到通用
     * @param key
     * @param psg
     */
    @Override
    public  void set(String key, UserPsg psg)
    { 
        HashOperations<String, String, Object> oper = redis.opsForHash();
        oper.put(key, "address", psg.getAddress());
        oper.put(key, "phone", psg.getPhone());
    }
    
    /**
     * @description 此方法利用反射技术，做到了任何pojo都可以通用此方法(目前不支持内置对象,好像redis也不支持内置对象)
     * @param key
     * @param object
     */
    @Override
    public void setClazz(String key, Object object) 
    {
        HashOperations<String, String, Object> oper = redis.opsForHash();
        ClassInfo info = new ClassInfo();
        Map<String, String> map;
        try {
            map = info.getFieldsByClass(object);
            Set<String> set = map.keySet();
            for(Iterator<String> iter = set.iterator();iter.hasNext();)
            {
                String hKey = iter.next();
                String hValue = map.get(hKey);
                oper.put(key, hKey, hValue);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } 
    }
    
    /**
     * @description 根据hash的键（key）和属性(hKye)查询出对应的属性
     * @param key
     * @param hKye
     */
    @Override
    public void get( String key, String hKye) 
    {
        HashOperations<String, String, Object> oper = redis.opsForHash();
        String value = (String) oper.get(key, hKye);
        System.out.println("hash 的get方法获取值 :" + value);
    }
    
    /**
     * @description 获取键(key)下面的所有属性
     * @param key
     */
    @Override
    public void getKeys(String key) {
        HashOperations<String, String, Object> oper = redis.opsForHash();
        Set<String> set = oper.keys(key);
        
        System.out.println( key + "下面的键有：");
        for(Iterator<String> iter = set.iterator();iter.hasNext();)
        {
            String _key = iter.next();
            System.out.println(_key);
        }
    }
    
    /**
     * @description 获取键(key)下面的所有值
     * @param key
     */
    @Override
    public void getValues(String key)
    {
        HashOperations<String, String, Object> oper = redis.opsForHash();
        List<Object> list = oper.values(key);
        
        System.out.println( key + "下面的键有：");
        for(Iterator<Object> iter = list.iterator();iter.hasNext();)
        {
            String _key = iter.next().toString();
            System.out.println(_key);
        }
    }

    /**
     * @description 根据键获取属性个数
     * @param key
     */
    @Override
    public void length(String key) {
        HashOperations<String, String, Object> oper = redis.opsForHash();
        int size = oper.size(key).intValue();
        System.out.println(key + "属性共有　："+ size);
    }
    
    /**
     * @description 判断键是否存在
     * @param key
     * @param hashKey
     */
    @Override
    public void exists(String key,String hashKey) {
        HashOperations<String, String, Object> oper = redis.opsForHash();
        boolean b =    oper.hasKey(key, hashKey);
        System.out.println(key + "下面的" +hashKey + "属性：" + b);
    }
    
    /**
     * @description 删除指定的键（key）下面的属性（hashKeys）
     * @param key
     * @param hashKeys
     */
    @Override
    public void delete(String key, Object...hashKeys) {
        HashOperations<String, String, Object> oper = redis.opsForHash();
        oper.delete(key,hashKeys);
    }

    
}

 

反射依赖方法，自己封装的：

package com.net.test.redis.base.until;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

/**
 * @author ****
 * @Time：2017年8月9日 下午3:16:37
 * @version 1.0
 * @description 反射基类
 */

public class ClassInfo {
    
    /**
     * @description 利用反射，读取pojo属性以及get**方法
     * @param object
     * @return
     * @throws Exception
     */
    public Map<String,String> getFieldsByClass(Object object) throws Exception
    {
        Map<String,String> map = new HashMap<String,String>();
        Class<?> clazz = object.getClass();
        Field[] fields = clazz.getDeclaredFields();
        for(int i = 0; i < fields.length; i++)
        {
            String key = fields[i].getName();
            String Ukey = key.replace(key.substring(0, 1), key.substring(0, 1).toUpperCase());
            String value = "get" + Ukey ;
            
            Method method = clazz.getDeclaredMethod(value);
            Object obj = method.invoke(object);
            
            map.put(key, obj.toString());
        }
        return map;    
    }
    
}