Request header is too large 的問題解決
阿新 • • 發佈:2018-12-11
1:問題原因:
後臺接受前臺傳入的內容字串,由於內容字串太大,導致列印臺報錯.
1-1:錯誤描述:
java.lang.IllegalArgumentException: Request header is too large at org.apache.coyote.http11.Http11InputBuffer.fill(Http11InputBuffer.java:701) at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:455) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:667) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1434) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)
1-2:解決方案(伺服器容器:tomcat):
1:請求頭超過了tomcat的限值。本來post請求是沒有引數大小限制,但是伺服器有自己的預設大小。 2:配置 tomcat的server.xml檔案,增加請求欄位長度
<Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" maxHttpHeaderSize="102400" maxPostSize="0" URIEncoding="UTF-8"/>
增加maxHttpHeaderSize引數配置,當maxPostSize=0時,表示不限制.
1-3:SpringBoot專案:
在application.yml檔案中,配置server.max-http-header-size=102400引數,即可改變內嵌tomcat容器的最大頭大小.
1-4:詳細錯誤原因:
在tomcat的org.apache.coyote.http11.AbstractHttp11Protocol類中定義了其預設值:
/** * Maximum size of the HTTP message header. */ private int maxHttpHeaderSize = 8 * 1024; //所以當請求頭大於8*1024時,就會報錯.增對大資料量的請求,需要單獨配置maxHttpHeaderSize引數屬性.