如果在Unity3D中或者Flex中访问tomcat会出现访问协议异常 做下面的配置即可解决
crossdomain.xml 位置 将这两个文件放在tomcat主目录下即 %TOMCAT_HOME%\webapps\ROOT 下可以避免不同项目相互访问资源导致的权限问题。
web访问位置http://your_host:port/crossdomain.xml，成功访问该文件即可。
1.crossdomain.xml
<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "./cross-domain-policy.dtd">
<cross-domain-policy> <site-control permitted-cross-domain-policies="all" />
<allow-access-from domain="*" />
<allow-http-request-headers-from domain="*" headers="*"/>
</cross-domain-policy>
2.cross-domain-policy.dtd
<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- Adobe DTD for cross-domain policy files -->
<!-- Copyright (c) 2008-2009, Adobe Systems Inc. -->
<!ELEMENT cross-domain-policy (site-control?,allow-access-from*,allow-http-request-headers-from*,allow-access-from-identity*)>
<!ELEMENT site-control EMPTY>
<!ATTLIST site-control permitted-cross-domain-policies (all|by-content-type|by-ftp-filename|master-only|none) #REQUIRED>
<!ELEMENT allow-access-from EMPTY>
<!ATTLIST allow-access-from domain CDATA #REQUIRED>
<!ATTLIST allow-access-from to-ports CDATA #IMPLIED>
<!ATTLIST allow-access-from secure (true|false) "true">
<!ELEMENT allow-http-request-headers-from EMPTY>
<!ATTLIST allow-http-request-headers-from domain CDATA #REQUIRED>
<!ATTLIST allow-http-request-headers-from headers CDATA #REQUIRED>
<!ATTLIST allow-http-request-headers-from secure (true|false) "true">
<!ELEMENT allow-access-from-identity (signatory)>
<!ELEMENT signatory (certificate)>
<!ELEMENT certificate EMPTY>
<!ATTLIST certificate fingerprint CDATA #REQUIRED>
<!ATTLIST certificate fingerprint-algorithm CDATA #REQUIRED>
<!-- End of file. -->