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<table>
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Java code:
if (request.getParameter("hobby") == null || request.getParameter("hobby").equals(""))
out.println("<I>No Value</I>");
String[] paramValues = request.getParameterValues("hobby");
......

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org.apache.jasper.JasperException: /check_login.jsp(5,5) Invalid standard action
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org. ......

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package com.cn.bean;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import com.cn.db.Jdbc;
public class Fenye {
private int maxpage;// × ......

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<%if(user.equals("")||pwd.equals("")) {%>
 
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