HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception java.lang.NullPointerException
bean.SelectBean.select(SelectBean.java:55)
servlet.AdminLoginServlet.doPost(AdminLoginServlet.java:69)
servlet.AdminLoginServlet.doGet(AdminLoginServlet.java:44)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.5.27
bean.SelectBean.select(SelectBean.java:55)
servlet.AdminLoginServlet.doPost(AdminLoginServlet.java:69)
servlet.AdminLoginServlet.doGet(AdminLoginServlet.java:44)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.5.27
bean.SelectBean.select(SelectBean.java:55)
servlet.AdminLoginServlet.doPost(AdminLoginServlet.java:69)
servlet.AdminLoginServlet.doGet(AdminLoginServlet.java:44)
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
根据这个找错误啊
bean.SelectBean.select(SelectBean.java:55)