Quarkus集成redis操作Redisson数据

时间:2022-05-23 kl 人气:1

前言

博主所在公司大量使用了redis缓存，redis客户端用的Redisson。在Quarkus集成redis时，博主尝试使用Redisson客户端直接集成，发现，在jvm模式下运行quarkus没点问题，但是在打native image时，就报错了，尝试了很多方式都是莫名其妙的异常。最后决定采用quarkus官方的redis客户端，但是Redisson客户端数据序列化方式是特有的，不是简单的String，所以quarkus中的redis需要操作Redisson的数据，就要保持序列化方式一致，本文就是为了解决这个问题。

Quarkus版本：1.7.0.CR1

集成redis

首先你的quarkus版本一定要1.7.0.CR1版本及以上才行，因为redis的扩展包是这个版本才发布的，添加依赖：

<dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-redis-client</artifactId>
</dependency>

新增redis链接配置

quarkus.redis.hosts=127.0.0.1:6379
quarkus.redis.database=0
quarkus.redis.timeout=10s
quarkus.redis.password=sasa

复制Redisson序列化

Redisson里内置了很多的序列化方式，我们用的JsonJacksonCodec，这里将Redisson中的实现复制后，稍加改动，如下：

/**
 * 和Redisson的序列化数据互相反序列化的编解码器
 * @author keking
 */
public class JsonJacksonCodec{
    public static final JsonJacksonCodec INSTANCE = new JsonJacksonCodec();
    @JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="@id")
    @JsonAutoDetect(fieldVisibility = Visibility.ANY,
                    getterVisibility = Visibility.PUBLIC_ONLY,
                    setterVisibility = Visibility.NONE,
                    isGetterVisibility = Visibility.NONE)
    public static class ThrowableMixIn {
    }
    protected final ObjectMapper mapObjectMapper;
    public JsonJacksonCodec() {
        this(new ObjectMapper());
    }
    public JsonJacksonCodec(ObjectMapper mapObjectMapper) {
        this.mapObjectMapper = mapObjectMapper.copy();
        init(this.mapObjectMapper);
        initTypeInclusion(this.mapObjectMapper);
    }
    protected void initTypeInclusion(ObjectMapper mapObjectMapper) {
        TypeResolverBuilder<?> mapTyper = new DefaultTypeResolverBuilder(DefaultTyping.NON_FINAL) {
            @Override
            public boolean useForType(JavaType t) {
                switch (_appliesFor) {
                case NON_CONCRETE_AND_ARRAYS:
                    while (t.isArrayType()) {
                        t = t.getContentType();
                    }
                    // fall through
                case OBJECT_AND_NON_CONCRETE:
                    return (t.getRawClass() == Object.class) || !t.isConcrete();
                case NON_FINAL:
                    while (t.isArrayType()) {
                        t = t.getContentType();
                    }
                    // to fix problem with wrong long to int conversion
                    if (t.getRawClass() == Long.class) {
                        return true;
                    }
                    if (t.getRawClass() == XMLGregorianCalendar.class) {
                        return false;
                    }
                    return !t.isFinal(); // includes Object.class
                default:
                    // case JAVA_LANG_OBJECT:
                    return t.getRawClass() == Object.class;
                }
            }
        };
        mapTyper.init(JsonTypeInfo.Id.CLASS, null);
        mapTyper.inclusion(JsonTypeInfo.As.PROPERTY);
        mapObjectMapper.setDefaultTyping(mapTyper);
    }
    protected void init(ObjectMapper objectMapper) {
        objectMapper.setSerializationInclusion(Include.NON_NULL);
        objectMapper.setVisibility(objectMapper.getSerializationConfig()
                                                    .getDefaultVisibilityChecker()
                                                        .withFieldVisibility(JsonAutoDetect.Visibility.ANY)
                                                        .withGetterVisibility(JsonAutoDetect.Visibility.NONE)
                                                        .withSetterVisibility(JsonAutoDetect.Visibility.NONE)
                                                        .withCreatorVisibility(JsonAutoDetect.Visibility.NONE));
        objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
        objectMapper.enable(Feature.WRITE_BIGDECIMAL_AS_PLAIN);
        objectMapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
        objectMapper.enable(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY);
        objectMapper.addMixIn(Throwable.class, ThrowableMixIn.class);
    }
    /**
     * 解码器
     * @param val
     * @return
     */
    public Object decoder(String val){
        try {
            ByteBuf buf = ByteBufAllocator.DEFAULT.buffer();
            try (ByteBufOutputStream os = new ByteBufOutputStream(buf)) {
                os.write(val.getBytes());
            }
            return mapObjectMapper.readValue((InputStream) new ByteBufInputStream(buf), Object.class);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
    /**
     * 编码器
     * @param obj
     * @return
     */
    public String encoder(Object obj){
        ByteBuf out = ByteBufAllocator.DEFAULT.buffer();
        try {
            ByteBufOutputStream os = new ByteBufOutputStream(out);
            mapObjectMapper.writeValue((OutputStream) os, obj);
            return os.buffer().toString(StandardCharsets.UTF_8);
        } catch (IOException e) {
            out.release();
        }
        return null;
    }
}

使用

@Dependent
@Startup
public class Test {
    @Inject
    RedisClient redisClient;
    @Inject
    Logger logger;
    void initializeApp(@Observes StartupEvent ev) {
        //使用JsonJacksonCodec编解码，保持和redisson互通
        JsonJacksonCodec codec = JsonJacksonCodec.INSTANCE;
        Map<String, String> map = new HashMap<>();
        map.put("key","666");
        redisClient.set(Arrays.asList("AAAKEY", codec.encoder(map)));
        String str = redisClient.get("AAAKEY").toString(StandardCharsets.UTF_8);
        Map<String,String> getVal = (Map<String, String>) codec.decoder(str);
        logger.info(getVal.get("key"));
    }

}

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