HTTP状态500 - --------------------------------------------------------------------------------type 异 常 报 告信 息 描 述 服务器遇到内部错误,无法满足这个访问请求异 常 org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:512)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:395)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
起 因 java.lang.NullPointerException
com.tv.db.DB.callSPUpdate(DB.java:522)
org.apache.jsp.addTVstation_jsp._jspService(addTVstation_jsp.java:87)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)能提示下问题 可能出在哪么?
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:512)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:395)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
起 因 java.lang.NullPointerException
com.tv.db.DB.callSPUpdate(DB.java:522)
org.apache.jsp.addTVstation_jsp._jspService(addTVstation_jsp.java:87)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)能提示下问题 可能出在哪么?
StringBuffer pcp=new StringBuffer();
if (vv.inCount == 0) {
vv.inCount = vv.size();
}
if (vv.size() == 0) {
pcp.append("{ ? = call ");
pcp.append(cp);
pcp.append(" }");
} else {
pcp.append("{ ? = call ");
pcp.append(cp);
pcp.append(" (");
for (int i = 0; i < vv.size() - 1; i++) {
pcp.append("?,");
}
pcp.append("?) }");
}
CallableStatement proc = connection.prepareCall(pcp.toString());
proc.registerOutParameter(1,Types.INTEGER);
int tempsize=vv.size();
for (int i = 0; i < tempsize; i++) {
if (i < vv.inCount) {
proc.setObject(i + 2, vv.getValue(i), vv.getType(i));
} else {
proc.registerOutParameter(i+2 , vv.getType(i));
}
}
vv.effactRows = proc.executeUpdate();
for (int i = vv.inCount; i < tempsize; i++) {
vv.setValue(i, proc.getObject(i + 2));
}
//proc.close();
return proc.getInt(1);
}这是这部分的内容 522行是 CallableStatement proc = connection.prepareCall(pcp.toString());该怎么改呢?