com.redismq.common.serializer.MessageDeserializer Maven / Gradle / Ivy
package com.redismq.common.serializer;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import com.fasterxml.jackson.databind.node.MissingNode;
import com.redismq.common.pojo.Message;
import java.io.IOException;
import java.util.Map;
/**
* @author hzh
* @date 2020/11/18 18:21 自定义刷新令牌json解析器
*/
public class MessageDeserializer extends StdDeserializer {
protected MessageDeserializer(Class vc) {
super(vc);
}
@Override
public Message deserialize(JsonParser jsonParser, DeserializationContext deserializationContext)
throws IOException {
//获取ObjectMapper
ObjectMapper mapper = (ObjectMapper) jsonParser.getCodec();
//读取节点
JsonNode jsonNode = mapper.readTree(jsonParser);
//jsonNode获取字段
JsonNode body = jsonNode.has("body") ? jsonNode.get("body") : MissingNode.getInstance();
JsonNode id = jsonNode.has("id") ? jsonNode.get("id") : MissingNode.getInstance();
JsonNode key = jsonNode.has("key") ? jsonNode.get("key") : MissingNode.getInstance();
JsonNode queue = jsonNode.has("queue") ? jsonNode.get("queue") : MissingNode.getInstance();
JsonNode tag = jsonNode.has("tag") ? jsonNode.get("tag") : MissingNode.getInstance();
JsonNode offset = jsonNode.has("offset") ? jsonNode.get("offset") : MissingNode.getInstance();
JsonNode virtualQueueName =
jsonNode.has("virtualQueueName") ? jsonNode.get("virtualQueueName") : MissingNode.getInstance();
JsonNode header = jsonNode.has("header") ? jsonNode.get("header") : MissingNode.getInstance();
Message message = new Message();
// 现在你可以使用JsonNode的方法来确定它的具体类型
if (!body.isMissingNode()) {
//默认转字符串
Object obj = body.toString();
if (body.isObject()) {
obj = body.toString();
}
else if (body.isArray()) {
obj = body.toString();
}
else if (body.isPojo()) {
obj = body.toString();
}
else if (body.isDouble()) {
obj = body.asDouble();
// 处理数组节点
} else if (body.isFloat()) {
obj = body.floatValue();
} else if (body.isBinary()) {
obj = body.binaryValue();
} else if (body.isBigDecimal()) {
obj = body.isBigDecimal();
} else if (body.isBigInteger()) {
obj = body.bigIntegerValue();
} else if (body.isTextual()) {
obj = body.asText();
// 处理文本值
}
else if (body.isLong()) {
obj = body.asLong();
// 处理布尔值
}
else if (body.isInt()) {
obj = body.asInt();
// 处理数值
} else if (body.isBoolean()) {
obj = body.asBoolean();
// 处理布尔值
} else if (body.isShort()) {
obj = body.shortValue();
// 处理布尔值
}
else if (body.isNull()) {
obj = null;
// 处理null值
}
message.setBody(obj);
}
message.setId(id.asText());
message.setKey(key.asText());
message.setQueue(queue.asText());
message.setTag(tag.asText());
message.setOffset(offset.asLong());
message.setVirtualQueueName(virtualQueueName.asText());
if (!header.isMissingNode()) {
Map map = mapper.readValue(header.traverse(), Map.class);
message.setHeader(map);
}
return message;
}
}