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java.lang.NullPointerException
com.yxq.dao.FriendDao.queryFriend(FriendDao.java:47)
这里空指针了,打断点看看
root cause
java.lang.NullPointerException
com.yxq.dao.FriendDao.queryFriend(FriendDao.java:47)
com.yxq.servlet.IndexServlet.doPost(IndexServlet.java:52)
com.yxq.servlet.IndexServlet.doGet(IndexServlet.java:25)javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:706)
org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:677)
org.apache.jsp.index_jsp._jspService(index_jsp.java:56)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)