struts开发图书系统问题
javax.servlet.ServletExceptionorg.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
root cause
java.lang.NullPointerException
com.action.Manager.managerLogin(Manager.java:53)
com.action.Manager.execute(Manager.java:20)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
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那么大个空指针。。。。你要问啥
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是不是有个死循环??比如在doGet(..)调用了doGet()??
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com.action.Manager.managerLogin(Manager.java:53)
com.action.Manager.execute(Manager.java:20)
查查这两个文件
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java.lang.NullPointerException
com.action.Manager.managerLogin(Manager.java:53)
com.action.Manager.execute(Manager.java:20)
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