SpringBoot调用lua脚本 SpringBoot通过redisTemplate调用lua脚本并打印调试信息到redis log(方法步骤详解)

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 {
  return ofNullable(t)
    .map(r -> JSON.toJSONString(r, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET))
    .orElseGet(() -> new byte[0]);
 }
 @Override
 public T deserialize(byte[] bytes) throws SerializationException {
  return Optional.ofNullable(bytes)
    .map(t -> JSON.parseObject(new String(t, DEFAULT_CHARSET), clazz))
    .orElseGet(() -> null);
 }
}

@Service("luaScriptService")
public class LuaScriptServiceImpl implements LuaScriptService{
 @Autowired
 private RedisTemplate<String,Object> redisTemplate1;
 private DefaultRedisScript<List> getRedisScript;
 @PostConstruct
 public void init(){
  getRedisScript = new DefaultRedisScript<List>();
  getRedisScript.setResultType(List.class);
  getRedisScript.setScriptSource(new ResourceScriptSource(new ClassPathResource("luascript/LimitLoadTimes.lua")));
 }
 @Override
 public void redisAddScriptExec(){
  /**
   * List设置lua的KEYS
   */
  List<String> keyList = new ArrayList();
  keyList.add("count");
  keyList.add("rate.limiting:127.0.0.1");
  /**
   * 用Mpa设置Lua的ARGV[1]
   */
  Map<String,Object> argvMap = new HashMap<String,Object>();
  argvMap.put("expire",10000);
  argvMap.put("times",10);
  /**
   * 调用脚本并执行
   */
  List result = redisTemplate1.execute(getRedisScript,keyList, argvMap);
  System.out.println(result);
 }
}

--获取KEY
local key1 = KEYS[1]
local key2 = KEYS[2]
-- 获取ARGV[1],这里对应到应用端是一个List<Map>.
-- 注意，这里接收到是的字符串，所以需要用csjon库解码成table类型
local receive_arg_json = cjson.decode(ARGV[1])
--返回的变量
local result = {}
--打印日志到reids
--注意，这里的打印日志级别，需要和redis.conf配置文件中的日志设置级别一致才行
redis.log(redis.LOG_DEBUG,key1)
redis.log(redis.LOG_DEBUG,key2)
redis.log(redis.LOG_DEBUG, ARGV[1],#ARGV[1])
--获取ARGV内的参数并打印
local expire = receive_arg_json.expire
local times = receive_arg_json.times
redis.log(redis.LOG_DEBUG,tostring(times))
redis.log(redis.LOG_DEBUG,tostring(expire))
--往redis设置值
redis.call("set",key1,times)
redis.call("incr",key2)
redis.call("expire",key2,expire)
--用一个临时变量来存放json,json是要放入要返回的数组中的
local jsonRedisTemp={}
jsonRedisTemp[key1] = redis.call("get",key1)
jsonRedisTemp[key2] = redis.call("get", key2)
jsonRedisTemp["ttl"] = redis.call("ttl",key2)
redis.log(redis.LOG_DEBUG, cjson.encode(jsonRedisTemp))
result[1] = cjson.encode(jsonRedisTemp) --springboot redistemplate接收的是List,如果返回的数组内容是json对象,需要将json对象转成字符串,客户端才能接收
result[2] = ARGV[1] --将源参数内容一起返回
redis.log(redis.LOG_DEBUG,cjson.encode(result)) --打印返回的数组结果，这里返回需要以字符返回
return result