ubc 毕业典礼:java.lang.NullPointerException
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exception
org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NullPointerException
com.MembBean.regist(MembBean.java:36)
org.apache.jsp.regiester.addmemb_jsp._jspService(addmemb_jsp.java:128)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
MembBean.java:36行的代码是PreparedStatement pstmt=conn.prepareStatement("insert into memb_info values(?,?,?,?,?,?,?,?,?,?,?,?,?)");
org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NullPointerException
com.MembBean.regist(MembBean.java:36)
org.apache.jsp.regiester.addmemb_jsp._jspService(addmemb_jsp.java:128)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
MembBean.java:36行的代码是PreparedStatement pstmt=conn.prepareStatement("insert into memb_info values(?,?,?,?,?,?,?,?,?,?,?,?,?)");
你的sql语句有问题,好好检查一下
可能是你的sql语句有问题,好好检查一下
可能是conn没有初始化。。。
java.lang.NoClassDefFoundError
java.lang.OutOfMemoryError
java.lang.OutOfMemoryError
java.lang.OutOfMemoryError
java.lang.NullPointerException
java.lang.NullPointerException
java.lang.NullPointerException解决办法
java.lang.NullPointerException
java.lang.NullPointerException
java.lang.NumberFormatException: null java.lang.NumberFormatException: null