利用Spring jdbcTemplate 來進行數據庫的操作

 

package com.shangyu.action;
import com.opensymphony.xwork2.ActionSupport;
import java.sql.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import com.shangyu.db.*;
import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.support.JdbcDaoSupport;

public class HelloWorld extends ActionSupport...{
    List userList=null;
    private String username="";
    private String userpwd="";
    
    
    public List getUserList() ...{
        return userList;
    }
    public void setUserList(List userList) ...{
        this.userList = userList;
    }
    public String getUsername() ...{
        return username;
    }
    public void setUsername(String username) ...{
        this.username = username;
    }
    public String getUserpwd() ...{
        return userpwd;
    }
    public void setUserpwd(String userpwd) ...{
        this.userpwd = userpwd;
    }
    
    public String execute()
    ...{
        /**//*傳統的通過jdbc來進行數據庫的操作
        Connection conn=null;
        PreparedStatement stmt=null;
        ResultSet rs=null;
        try
        {
           conn=ProxoolAction.getConnection();
           stmt=conn.prepareStatement("select * from 資源預約表");
           rs=stmt.executeQuery();
           while(rs.next())
           {
               System.out.println(rs.getString(2));
           }
        }catch(Exception e)
        {
            System.out.println(e);
        }finally
        {
            ProxoolAction.closeResultSet(rs);
            ProxoolAction.closeStatement(stmt);
            ProxoolAction.closeConnection(conn);
        }
        System.out.println(getUsername()+"   "+getUserpwd());
        */
        
        final List resourceList= new ArrayList();
        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        DataSource ds =(DataSource) ctx.getBean("TestSource");
        JdbcTemplate jdbcTemplate=new JdbcTemplate(ds);
        
        //直接利用sql語句來插入數據
        //String sqlstr="insert into 資源預約表(r_id,reg_time,reg_xq,reg_week,reg_userxm) values(1,'2008-04-05','2007-2008',1,'admin')";
        
        //帶參數的方式向數據庫中插入數據
        //String sqlstr="insert into 資源預約表(r_id,reg_time,reg_xq,reg_week,reg_userxm) values(?,?,?,?,?)";
        //Object[] params=new Object[]{1,"2008-04-25","2007-2008",1,"shangyu79"};
        //jdbcTemplate.update(sqlstr,params);
        
        //修改數據
        String sqlstr="update 資源預約表 set r_id=? where reg_id=?";
        Object[] params=new Object[]...{1000,24};
        jdbcTemplate.update(sqlstr,params);
        
        //得到表中記錄數
        sqlstr="select count(1) from 資源預約表";
        int i=jdbcTemplate.queryForInt(sqlstr);
        System.out.println("資源預約表總數據："+i);
        
        jdbcTemplate.query("select * from 資源預約表", new RowCallbackHandler()...{
            public void processRow(ResultSet rs) throws SQLException...{
                Map user=new HashMap();
                user.put("username", rs.getString("reg_content"));
                user.put("xq",rs.getString("reg_xq"));
                resourceList.add(user);
            }
        });
        
        
        /**//*Iterator it= resourceList.iterator();
        while(it.hasNext())
        {
            System.out.println(it.next());
        }*/
        
        setUserList(resourceList);
        
        return SUCCESS;
    }

}