JSON.stringify(values)之后，出现以下错误：
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警告: Parameters: Invalid chunk ignored.
2013-1-30 10:54:14 org.apache.tomcat.util.http.Parameters processParameters
警告: Parameters: Character decoding failed. Parameter skipped.
java.io.CharConversionException: isHexDigit
??? at org.apache.tomcat.util.buf.UDecoder.convert(UDecoder.java:88)
??? at org.apache.tomcat.util.buf.UDecoder.convert(UDecoder.java:49)
??? at org.apache.tomcat.util.http.Parameters.urlDecode(Parameters.java:412)
??? at org.apache.tomcat.util.http.Parameters.processParameters(Parameters.java:394)
??? at org.apache.tomcat.util.http.Parameters.processParameters(Parameters.java:346)
??? at org.apache.catalina.connector.Request.parseParameters(Request.java:2503)
??? at org.apache.catalina.connector.Request.getParameter(Request.java:1040)
??? at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:355)
??? at cn.kyinfo.webframe.filter.SecurityFilter.doFilter(SecurityFilter.java:131)
??? at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
??? at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
??? at cn.kyinfo.webframe.filter.PermissionResetFilter.doFilter(PermissionResetFilter.java:55)
??? at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
??? at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
??? at cn.kyinfo.webframe.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:90)
??? at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
??? at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
??? at cn.kyinfo.webframe.filter.EncodingFilter.doFilter(EncodingFilter.java:34)
??? at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
??? 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:128)
??? 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:293)
??? at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
??? at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
??? at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
??? at java.lang.Thread.run(Thread.java:619)
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解决方法：
仔细找了下资料，发现原来是编码问题，将数据再重新编码，搞定。如下：
encodeURIComponent(JSON.stringify(values));
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encodeURIComponent 参考
定义和用法
encodeURIComponent() 函数可把字符串作为 URI 组件进行编码。
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语法
encodeURIComponent(URIstring)
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返回值
URIstring 的副本，其中的某些字符将被十六进制的转义序列进行替换。
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说明
该方法不会对 ASCII 字母和数字进行编码，也不会对这些 ASCII 标点符号进行编码： - _ . ! ~ * ' ( ) 。
其他字符（比如 ：;/?:@&=+$,# 这些用于分隔 URI 组件的标点符号），都是由一个或多个十六进制的转义序列替换的。