Camel 2.9.0 incapable of working with % in endpoint URIs
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                 Key: CAMEL-4954
                 URL: https://issues.apache.org/jira/browse/CAMEL-4954
             Project: Camel
          Issue Type: Bug
          Components: camel-core
    Affects Versions: 2.9.0
         Environment: Mac 10.7 Java6
            Reporter: Sebastian Rühl
            Priority: Critical


In the class org.apache.camel.util.URISupport which will be used to resolve 
endpoints (DefaultCamelContext#normalizeEndpointUri) the method parseParameters 
will be called.
At first the java.net.Uri#getQuery will be called with according to the javadoc 
"Returns the decoded query component of this URI" returns a decoded URI. If 
that fails the java.net.Uri#getSchemeSpecificPart method will be called which 
according to the javadoc "Returns the decoded scheme-specific part of this 
URI." returns a decoded URI.
So to summarize we get in any case a decoded URI.
This URI will then be than in the method 
org.apache.camel.util.URISupport#parseQuery(String) again decoded with 
java.net.URLDecoder#decode(String,String).
This code leads to the following behaviour:
 If a % is properly encoded with %25test the %25test will be substituted by the 
first call to %test and the decoded again which leads to an Exception.

In the http://svn.apache.org/viewvc?view=revision&revision=1166508 commit you 
can see that the % was uncommented from 
org.apache.camel.util#UnsafeUriCharactersEncoder. Maybe this is related.

However... Double encoding of URIs seems quite odd. With any URI char there is 
no issue with that. But with % the % will be decoded again, which makes a % 
unusable in Camel.

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