rainwolf01 commented on issue #10123:
URL: https://github.com/apache/dubbo/issues/10123#issuecomment-1148136023
感谢大佬百忙中指点。
```java
//from
org.apache.dubbo.rpc.protocol.tri.stream.StreamUtils#convertAttachment
/**
* Convert each user's attach value to metadata
*
* @param headers outbound headers
* @param key metadata key
* @param v metadata value (Metadata Only string and byte arrays
are allowed)
*/
private static void convertSingleAttachment(DefaultHttp2Headers headers,
String key, Object v) {
try {
if (v instanceof String || v instanceof Number || v instanceof
Boolean) {
String str = v.toString();
headers.set(key, str);
} else if (v instanceof byte[]) {
String str = encodeBase64ASCII((byte[]) v);
headers.set(key + TripleConstant.HEADER_BIN_SUFFIX, str);
}
} catch (Throwable t) {
LOGGER.warn("Meet exception when convert single attachment key:"
+ key + " value=" + v,
t);
}
}
```
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