Java SQL COUNT值

Question

我试图在附加的Java中返回计数值，这就是我所拥有的......

package com.example.tests;

import java.awt.geom.GeneralPath;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class TestNew {

public void generateid(){

int count;


    try {
        Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
        Connection conn = DriverManager.getConnection("jdbc:sqlserver://IP:PORT;DatabaseName=blabla;integratedSecurity=true;");
        System.out.println("Connection Successfull");
        System.out.println(conn); 

        //--------------------------------------------------------------------
        Statement stmt = conn.createStatement();
        String query1= "SELECT COUNT(*) from dbo.vSubscriberReporting where [SubscriberEmailAddressStatusID] in (5,1,6,7) and [SubscriberStatusID] = 1 AND [SubscriberAddresseeStatusID] = 1 and CompanySizeCodeID IN (4)";
        ResultSet rs= stmt.executeQuery(query1);

count = rs.getInt(1);  
//i cant store the count value from query in this variable... Please help me.
    } catch (ClassNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }


    }

public static void main(String[] args) {
    TestNew gen = new TestNew();
    gen.generateid();

}
}

查询运行，但返回

com.microsoft.sqlserver.jdbc.SQLServerException: The result set has no current row.

虽然我知道应该有数据，只有一个COUNT记录..

我希望能够将结果存储到变量中，然后使用它来验证selenium脚本中的字段吗？

Answer 1

在尝试拨打rs.next()

之前致电getInt(1)

if(rs.next()) //Expecting one row.
{
    count = rs.getInt(1);
}

Answer 2

因为这是一个结果;你也可以这样做：

rs.moveFirst();
count = rs.getInt(1);