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)
本地调试没有问题，放到生产环境报错
通过网上搜索，大多是说Tomcat版本问题，
本地版本tomcat7，生产环境tomcat8
1、https://blog.csdn.net/qilin001cs/article/details/80272192
修改catalina.properties 中的配置项中开启下边这个配置即可：
tomcat.util.http.parser.HttpParser.requestTargetAllow=|
但是这个方法我试了下没成功！！
2、对url参数进行encode
location.href="/api/user/exportData?data="+encodeURI(_obj);
成功
原因：
因为tomcat自tomcat 8.0.35版本之后对URL参数做了比较规范的限制，必须遵循RFC 7230 and RFC 3986规范，对于非保留字字符（json格式的请求参数）必须做转义操作，否则会抛出Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986错误信息。