第二十七章 可更新和對更新敏感的結果集

在查詢後，用ResultSet.update更新數據

package cn.itcast.jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class UpdateTest {
	public static void read(){
		Connection conn = null;
		Statement st = null;
		ResultSet rs = null;
		try {
			conn = JdbcUtils.getConnection();
			//設置可滾動，可更新
			st = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
			rs = st.executeQuery("select id,name,birthday,money from user");
			//下一條
			while(rs.next()){
				System.out.println(rs.getObject("id"));
				System.out.println(rs.getObject("name"));
				System.out.println(rs.getObject("birthday"));
				System.out.println(rs.getObject("money"));
				String name = rs.getString("name");
				
				/*更新數據*/
				if("batch name0".equals(name)){
					rs.updateString("name", "updateName");
					rs.updateRow();
				}
			}
	
			
			
		} catch (SQLException e) {
			e.printStackTrace();
		}finally{
			JdbcUtils.free(rs, st, conn);
		}
	}
	public static void main(String[] args){
		UpdateTest.read();
		
	}
}