Flex Servlet 中文问题

还原问题:

? request.setCharacterEncoding("UTF-8");
??response.setContentType("text/html;charset=UTF-8");
??request.setCharacterEncoding("UTF-8");

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? response.getOutputStream().println("中文");

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java.io.CharConversionException: Not an ISO 8859-1 character: 中
?at javax.servlet.ServletOutputStream.print(ServletOutputStream.java:89)
?at javax.servlet.ServletOutputStream.println(ServletOutputStream.java:242)
?at com.zwly.server.TanksServlet.doPost(TanksServlet.java:71)
?at com.zwly.server.TanksServlet.doGet(TanksServlet.java:24)
?at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
?at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
?at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
?at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
?at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
?at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
?at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
?at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
?at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
?at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
?at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
?at java.lang.Thread.run(Unknown Source)

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解决：

???PrintWriter out = response.getWriter();???out.print("中文");