14-Dec-2018 13:59:39.018 INFO [http-nio-8080-exec-1] org.apache.coyote.http11.AbstractHttp11Processor.process Error parsing HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986
at org.apache.coyote.http11.AbstractNioInputBuffer.parseRequestLine(AbstractNioInputBuffer.java:285)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1045)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1539)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1495)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
本地調試沒有問題，放到生產環境報錯
通過網上搜索，大多是說Tomcat版本問題，
本地版本tomcat7，生產環境tomcat8
1、https://blog.csdn.net/qilin001cs/article/details/80272192
修改catalina.properties 中的配置項中開啓下邊這個配置即可：
tomcat.util.http.parser.HttpParser.requestTargetAllow=|
但是這個方法我試了下沒成功！！
2、對url參數進行encode
location.href="/api/user/exportData?data="+encodeURI(_obj);
成功
原因：
因爲tomcat自tomcat 8.0.35版本之後對URL參數做了比較規範的限制，必須遵循RFC 7230 and RFC 3986規範，對於非保留字字符（json格式的請求參數）必須做轉義操作，否則會拋出Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986錯誤信息。