为提高效率，请提供以下信息，问题描述清晰能够更快得到解决：
【 TiDB 使用环境】
使用tidb-operator:v1.2.4部署tidb 5.3.0版本、ticdc 5.3.0版本
【概述】
使用ticdc同步变更日志到kafka中，使用flink读出来，发生问题，又自己写一个代码，从kafka中读出来，返现异常字符。
【问题】
使用flink读出来，报错如下：
java.io.IOException: Failed to deserialize JSON ''.
at org.apache.flink.formats.json.JsonRowDataDeserializationSchema.deserialize(JsonRowDataDeserializationSchema.java:112)
at org.apache.flink.formats.json.JsonRowDataDeserializationSchema.deserialize(JsonRowDataDeserializationSchema.java:50)
at org.apache.flink.api.common.serialization.DeserializationSchema.deserialize(DeserializationSchema.java:82)
at org.apache.flink.streaming.connectors.kafka.table.DynamicKafkaDeserializationSchema.deserialize(DynamicKafkaDeserializationSchema.java:130)
at org.apache.flink.streaming.connectors.kafka.internals.KafkaFetcher.partitionConsumerRecordsHandler(KafkaFetcher.java:179)
at org.apache.flink.streaming.connectors.kafka.internals.KafkaFetcher.runFetchLoop(KafkaFetcher.java:142)
at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.run(FlinkKafkaConsumerBase.java:826)
at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:110)
at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:66)
at org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:269)
Caused by: org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.JsonParseException: Illegal character ((CTRL-CHAR, code 0)): only regular white space (\r, \
, \t) is allowed between tokens
at [Source: UNKNOWN; line: 1, column: 2]
at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:2337)
at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:710)
at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.base.ParserMinimalBase._throwInvalidSpace(ParserMinimalBase.java:688)
at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.json.ReaderBasedJsonParser._skipWSOrEnd(ReaderBasedJsonParser.java:2408)
at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:677)
at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper._readTreeAndClose(ObjectMapper.java:4622)
at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:3056)
at org.apache.flink.formats.json.JsonRowDataDeserializationSchema.deserializeToJsonNode(JsonRowDataDeserializationSchema.java:117)
at org.apache.flink.formats.json.JsonRowDataDeserializationSchema.deserialize(JsonRowDataDeserializationSchema.java:106)
... 9 more
使用自己写的消费代码，发现异常字符如下：
46
G{"ts":431068352530612227,"scm":"mydb","tbl":"products","rid":102,"t":1}
%{"u":{"db_name":{"t":15,"f":64,"v":"mydb3"},"description":{"t":15,"f":64,"v":"12V car battery1"},"id":{"t":3,"h":true,"f":11,"v":102},"name":{"t":15,"f":0,"v":"car battery"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}},"p":{"db_name":{"t":15,"f":64,"v":"mydb2"},"description":{"t":15,"f":64,"v":"12V car battery1"},"id":{"t":3,"h":true,"f":11,"v":102},"name":{"t":15,"f":0,"v":"car battery"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}}}
47
{"ts":431068352359956481,"t":3}
48
G{"ts":431068352805601283,"scm":"mydb","tbl":"products","rid":103,"t":1}
�{"u":{"db_name":{"t":15,"f":64,"v":"mydb3"},"description":{"t":15,"f":64,"v":"12-pack of drill bits with sizes ranging from #40 to #31"},"id":{"t":3,"h":true,"f":11,"v":103},"name":{"t":15,"f":0,"v":"12-pack drill bits"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}},"p":{"db_name":{"t":15,"f":64,"v":"mydb2"},"description":{"t":15,"f":64,"v":"12-pack of drill bits with sizes ranging from #40 to #31"},"id":{"t":3,"h":true,"f":11,"v":103},"name":{"t":15,"f":0,"v":"12-pack drill bits"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}}}
49
{"ts":431068352438599682,"t":3}
50
{"ts":431068352884506625,"t":3}
51
G{"ts":431068353159495684,"scm":"mydb","tbl":"products","rid":104,"t":1}
+{"u":{"db_name":{"t":15,"f":64,"v":"mydb3"},"description":{"t":15,"f":64,"v":"12oz carpenter's hammer1"},"id":{"t":3,"h":true,"f":11,"v":104},"name":{"t":15,"f":0,"v":"hammer"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}},"p":{"db_name":{"t":15,"f":64,"v":"mydb2"},"description":{"t":15,"f":64,"v":"12oz carpenter's hammer1"},"id":{"t":3,"h":true,"f":11,"v":104},"name":{"t":15,"f":0,"v":"hammer"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}}}
52
G{"ts":431068353395425284,"scm":"mydb","tbl":"products","rid":105,"t":1}
+{"u":{"db_name":{"t":15,"f":64,"v":"mydb3"},"description":{"t":15,"f":64,"v":"14oz carpenter's hammer1"},"id":{"t":3,"h":true,"f":11,"v":105},"name":{"t":15,"f":0,"v":"hammer"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}},"p":{"db_name":{"t":15,"f":64,"v":"mydb2"},"description":{"t":15,"f":64,"v":"14oz carpenter's hammer1"},"id":{"t":3,"h":true,"f":11,"v":105},"name":{"t":15,"f":0,"v":"hammer"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}}}
53
{"ts":431068353146388481,"t":3}
54
G{"ts":431068353631617027,"scm":"mydb","tbl":"products","rid":106,"t":1}
+{"u":{"db_name":{"t":15,"f":64,"v":"mydb3"},"description":{"t":15,"f":64,"v":"16oz carpenter's hammer1"},"id":{"t":3,"h":true,"f":11,"v":106},"name":{"t":15,"f":0,"v":"hammer"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}},"p":{"db_name":{"t":15,"f":64,"v":"mydb2"},"description":{"t":15,"f":64,"v":"16oz carpenter's hammer1"},"id":{"t":3,"h":true,"f":11,"v":106},"name":{"t":15,"f":0,"v":"hammer"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}}}
55
{"ts":431068353408532484,"t":3}
56
G{"ts":431068353867284483,"scm":"mydb","tbl":"products","rid":107,"t":1}
%{"u":{"db_name":{"t":15,"f":64,"v":"mydb3"},"description":{"t":15,"f":64,"v":"box of assorted rocks1"},"id":{"t":3,"h":true,"f":11,"v":107},"name":{"t":15,"f":0,"v":"rocks"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}},"p":{"db_name":{"t":15,"f":64,"v":"mydb2"},"description":{"t":15,"f":64,"v":"box of assorted rocks1"},"id":{"t":3,"h":true,"f":11,"v":107},"name":{"t":15,"f":0,"v":"rocks"},"operation_ts":{"t":7,"f":65,"v":"2022-01-07 07:28:16"},"table_name":{"t":15,"f":64,"v":"products"}}}
取数代码如下：
while (true) {
ConsumerRecords<String, String> records = consumer.poll(1000);
for (ConsumerRecord<String, String> record : records) {
System.out.println(i);
System.out.println(record.key());
System.out.println(record.value());
i++;
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
查看cdc运行状态正常，日志都没有明显报错
请问是什么原因导致的每个json文件之前有形似
的异常字符？怎么配置能够消除掉异常字符？
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