这个错误是什么原因？如何解决？

Question

type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: com.jspdev.ch12.PatientBean.deletePatient(Ljava/lang/String;)V
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:795)
org.apache.jsp.hospital.deleteP_jsp._jspService(deleteP_jsp.java:83)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
root cause java.lang.NoSuchMethodError: com.jspdev.ch12.PatientBean.deletePatient(Ljava/lang/String;)V
org.apache.jsp.hospital.deleteP_jsp._jspService(deleteP_jsp.java:69)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
note The full stack trace of the root cause is available in the Tomcat logs.

Answer 1

NoSuchMethodError: com.jspdev.ch12.PatientBean.deletePatient(Ljava/lang/String;)没有找到这个方法：com.jspdev.ch12.PatientBean.deletePatient(Ljava/lang/String;)
看看是不是调用方法（名字写）错了

Answer 2

NoSuchMethodError: com.jspdev.ch12.PatientBean.deletePatient(Ljava/lang/String;)
没有找到这个方法：com.jspdev.ch12.PatientBean.deletePatient(Ljava/lang/String;)
看看是不是调用方法（名字写）错了恩 就是这个原因，没有找到这个Bean ，谢谢啊！
不过又出现新问题了
错误提示：javax.servlet.ServletException: Column count doesn't match value count at row 1
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:795)
org.apache.jsp.hospital.addPatient_005fdo_jsp._jspService(addPatient_005fdo_jsp.java:107)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)这个又是个什么哦，怎么解决哦

Answer 3

Column count doesn't match value count at row 1
列和你取的值不匹配，检查下是不是列名写错了，或多写了。

Answer 4

Column count doesn't match value count at row 1
列和你取的值不匹配，检查下是不是列名写错了，或多写了。我都检查了，应该都是写对了的啊，可还是出现这个错误~！