设置tomcat的编码
在server.xml中寻找
<Connector connectionTimeout="20000" port="8081" protocol="HTTP/1.1" redirectPort="8443"/>在后面加入 URIEncoding = "utf-8"
<Connector connectionTimeout="20000" port="8081" protocol="HTTP/1.1" redirectPort="8443" URIEncoding="utf-8"/>