设置tomcat编码

server.xml
<Connector
        port="8080"
        maxThreads="150"
        minSpareThreads="25" maxSpareThreads="75"
        enableLookups="false"
        redirectPort="8443"
        acceptCount="100"
        debug="0"
        connectionTimeout="20000"
        disableUploadTimeout="true"
        URIEncoding="UTF-8"
/>

URIEncoding="UTF-8" ，如果不设置，url上传递的中文就不能被正确解码。