{"returnCode":"110","returnMsg":"签名不能为空","returnError":"cn.nb.util.AssertsException: 签名不能为空\n\tat cn.nb.util.Asserts.notEmpty(Asserts.java:160)\n\tat com.slb.web.servlet.ApiInterceptor.preHandle(ApiInterceptor.java:37)\n\tat org.springframework.web.servlet.HandlerExecutionChain.applyPreHandle(HandlerExecutionChain.java:134)\n\tat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:954)\n\tat org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)\n\tat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)\n\tat org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:856)\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:624)\n\tat org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:841)\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:731)\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)\n\tat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)\n\tat org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)\n\tat org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)\n\tat org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)\n\tat org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)\n\tat org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)\n\tat org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)\n\tat org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)\n\tat org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)\n\tat org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)\n\tat org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)\n\tat org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)\n\tat java.lang.Thread.run(Thread.java:748)\n"}