http://zhaopeiyan.blog.51cto.com/10522430/1788319
tomcat报错调试：
Jun 12, 2016 4:19:43 PM org.apache.coyote.http11.AbstractHttp11Processor process
INFO: Error parsing HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.ArrayIndexOutOfBoundsException: -64
at org.apache.coyote.http11.InternalInputBuffer.parseHeader(InternalInputBuffer.java:341)
at org.apache.coyote.http11.InternalInputBuffer.parseHeaders(InternalInputBuffer.java:271)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1007)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
是Tomcat的header缓冲区大小不够,只需要在server.xml中增加maxHttpHeaderSize字段即可:
<Connector URIEncoding="UTF-8" port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol" useBodyEncodingForURI="false" enableLookups="false" connectionTimeout="20000"
redirectPort="8443" maxHttpHeaderSize="你想要的大小"/>
tomcat常用配置注释：
maxHttpHeaderSize="8192" http请求头信息的最大程度，超过此长度的部分不予处理。一般8K。 URIEncoding="UTF-8" 指定Tomcat容器的URL编码格式。 disableUploadTimeout="true" 上传时是否使用超时机制 enableLookups="false"--是否反查域名，默认值为true。为了提高处理能力，应设置为false compression="on" 打开压缩功能 compressionMinSize="10240" 启用压缩的输出内容大小，默认为2KB noCompressionUserAgents="gozilla, traviata" 对于以下的浏览器，不启用压缩 compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain" 哪些资源类型需要压缩
tomcat配置示例：
配置示例 <Connector port="8080" redirectPort="8443" maxThreads="150" minSpareThreads="25" maxSpareThreads="75" acceptCount="100" connectionTimeout="20000" protocol="HTTP/1.1" maxHttpHeaderSize="8192" URIEncoding="UTF-8" disableUploadTimeout="true" enableLookups="false" compression="on" compressionMinSize="10240" noCompressionUserAgents="gozilla, traviata" compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain"> ... </Connector>
