fixes #2339 allow the req or res body encoding to be customized per p…

…ath prefix

reqtrans-config/src/main/resources/config/request-transformer.yml

@@ -3,8 +3,9 @@
 enabled: ${request-transformer.enabled:true}
 # indicate if the transform interceptor needs to change the request body
 requiredContent: ${request-transformer.requiredContent:true}
-# default body encoding for the request body. The default value is UTF-8. Other options are ISO-8859-1 and US-ASCII.
+# default body encoding for the request body. The default value is UTF-8. Other options is ISO-8859-1.
 defaultBodyEncoding: ${request-transformer.defaultBodyEncoding:UTF-8}
 # A list of applied request path prefixes, other requests will skip this handler. The value can be a string
 # if there is only one request path prefix needs this handler. or a list of strings if there are multiple.
+# For each path prefix, you can have a customized encoding after a space. For example, "/v1/pets ISO-8859-1"
 appliedPathPrefixes: ${request-transformer.appliedPathPrefixes:}