java.lang.ClassCastException: com.sun.proxy.$Proxy53 cannot be cast to cn.service.impl.WorkinggServiceImpl

    at cn.service.impl.WorkinggServiceImpl.getWorkinggService(WorkinggServiceImpl.java:64)

    at cn.servlet.WorkingServlet.doGet(WorkingServlet.java:38)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)

    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)

    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1136)

    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)

    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

    at java.lang.Thread.run(Unknown Source)

使用spring和mybatis整合时出现的问题，到后面找了好久才发现是这个地方

不能用实现类进行强转必须用接口进行强转，换成接口名 workinggService就好了

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