MIME type may not contain reserved characters

[PC-Chiu]

When post 'uaa/oauth/token' from launch.js use ajax, gateway project throw this exception：

java.lang.IllegalArgumentException: MIME type may not contain reserved characters
at org.apache.http.util.Args.check(Args.java:36) ~[httpcore-4.4.6.jar:4.4.6]
at org.apache.http.entity.ContentType.create(ContentType.java:206) ~[httpcore-4.4.6.jar:4.4.6]
at org.apache.http.entity.ContentType.create(ContentType.java:218) ~[httpcore-4.4.6.jar:4.4.6]
at org.springframework.cloud.netflix.zuul.filters.route.SimpleHostRoutingFilter.forward(SimpleHostRoutingFilter.java:278) ~[spring-cloud-netflix-core-1.2.0.RELEASE.jar:1.2.0.RELEASE]
at org.springframework.cloud.netflix.zuul.filters.route.SimpleHostRoutingFilter.run(SimpleHostRoutingFilter.java:179) ~[spring-cloud-netflix-core-1.2.0.RELEASE.jar:1.2.0.RELEASE]
at com.netflix.zuul.ZuulFilter.runFilter(ZuulFilter.java:112) ~[zuul-core-1.2.2.jar:1.2.2]
at com.netflix.zuul.FilterProcessor.processZuulFilter(FilterProcessor.java:197) ~[zuul-core-1.2.2.jar:1.2.2]
at com.netflix.zuul.FilterProcessor.runFilters(FilterProcessor.java:161) ~[zuul-core-1.2.2.jar:1.2.2]
at com.netflix.zuul.FilterProcessor.route(FilterProcessor.java:120) ~[zuul-core-1.2.2.jar:1.2.2]
at com.netflix.zuul.ZuulRunner.route(ZuulRunner.java:96) ~[zuul-core-1.2.2.jar:1.2.2]
at com.netflix.zuul.http.ZuulServlet.route(ZuulServlet.java:116) ~[zuul-core-1.2.2.jar:1.2.2]
at com.netflix.zuul.http.ZuulServlet.service(ZuulServlet.java:81) ~[zuul-core-1.2.2.jar:1.2.2]
……

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it's because of the 'request.getContentType()' return string "application/x-www-form-urlencoded; charset=UTF-8", it's browser default for form request, but when call:

ContentType.create(request.getContentType())

throws a exception because of request.getContentType() contain ";", it's reserved characters