Spring JdbcTemplate 查询方法中的RowMapper实现汇总

package


 hysteria.contact.dao.impl;

import


 java.sql.ResultSet;
import


 java.sql.SQLException;
import


 java.sql.Types;
import


 java.util.List;

import


 org.springframework.jdbc.core.JdbcTemplate;
import


 org.springframework.jdbc.core.<SPAN 
class


=hilite1>RowMapper</SPAN>;

import


 hysteria.contact.dao.ItemDAO;
import


 hysteria.contact.domain.Item;

public


 
class


 ItemDAOImpl 
implements


 ItemDAO {
private


 JdbcTemplate jdbcTemplate;

public


 
void


 setJdbcTemplate(JdbcTemplate jdbcTemplate) {
  
this


.jdbcTemplate = jdbcTemplate;
}

public


 Item insert(Item item) {
   String sql = 
"INSERT INTO items(user_id,name,phone,email) VALUES(?,?,?,?)"

;
   Object[] params = 
new


 Object[]{item.getUserId(),item.getName(),item.getPhone(),item.getEmail()};
  
int


[] types = 
new


 
int


[]{Types.INTEGER,Types.VARCHAR,Types.CHAR,Types.VARCHAR};
   jdbcTemplate.update(sql,params,types);
  
return


 item;
}

public


 Item update(Item item) {
   String sql = 
"UPDATE items SET name = ?, phone = ?, email = ? WHERE id = ?"

;
   Object[] params = 
new


 Object[] {item.getName(),item.getPhone(),item.getEmail(),item.getId()};
  
int


[] types = 
new


 
int


[] {Types.VARCHAR,Types.CHAR,Types.VARCHAR,Types.VARCHAR,Types.INTEGER};
   jdbcTemplate.update(sql,params,types);

  
return


 item;
}

public


 
void


 delete(Item item) {
   String sql = 
"DELETE FROM items WHERE id = ?"

;
   Object[] params = 
new


 Object[] {item.getId()};
  
int


[] types = 
new


 
int


[]{Types.INTEGER};
   jdbcTemplate.update(sql,params,types);
}

public


 Item findById(
int


 id) {
   String sql = 
"SELECT * FROM items WHERE id = ?"

;
   Object[] params = 
new


 Object[] {id};
  
int


[] types = 
new


 
int


[] {Types.INTEGER};
   List items = jdbcTemplate.query(sql,params,types,
new


 ItemMapper());
  
if


(items.isEmpty()){
   
return


 
null


;
   }
  
return


 (Item)items.get(
0

);
}

public


 List<Item> findAll() {
   String sql = 
"SELECT * FROM items"

;
  
return


 jdbcTemplate.query(sql,
new


 ItemMapper());
}


public


 List<Item> findAllByUser(
int


 user_id) {
   String sql = 
"SELECT * FROM items WHERE user_id = ?"

;
   Object[] params = 
new


 Object[]{user_id};
  
int


[] types = 
new


 
int


[]{Types.INTEGER};
   List items = jdbcTemplate.query(sql,params,types,
new


 ItemMapper());
  
return


 items;
}

protected


 
class


 ItemMapper 
implements


 <SPAN 
class


=hilite1>RowMapper</SPAN> {

  
public


 Object mapRow(ResultSet rs, 
int


 rowNum) 
throws


 SQLException {
    Item item = 
new


 Item();
    item.setId(rs.getInt(
"id"

));
    item.setUserId(rs.getInt(
"user_id"

));
    item.setName(rs.getString(
"name"

));
    item.setPhone(rs.getString(
"phone"

));
    item.setEmail(rs.getString(
"email"

));

   
return


 item;
   }

}


}

 

 

 

 

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第二个案例

 

 

package com.flmusic.cu.dao.jdbc;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

import org.springframework.jdbc.core.PreparedStatementCallback;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.support.JdbcDaoSupport;

import com.flmusic.cu.compere.CompereInfoBean;
import com.flmusic.cu.dao.CommendCompereDAO;

public class CommendCompereDAOJdbcImpl extends JdbcDaoSupport implements CommendCompereDAO{
/**
* 新增推荐主持人 状态：0--未审核;1--审核
* @param userId
*/
public void addCommendCompere(final Integer userId){
  
   StringBuffer sql = new StringBuffer(200);
   //新增推荐主持人
   sql.append("insert into u_commend_compere_info(I64UserID,status) values(?,0)");
   this.getJdbcTemplate().execute(sql.toString(),new PreparedStatementCallback(){
     public Object doInPreparedStatement(PreparedStatement ps)throws SQLException {
        ps.setInt(1, userId);
        ps.execute();
        return null;
     }
   });
   //更新推荐状态--已推荐(1)
   updateCommendFlag(userId,1);
}
/**
* 查询推荐主持人列表
* @return
*/
public List findCommendCompereList(Integer agentId){  
   StringBuffer sql = new StringBuffer(200);
   sql.append("select uc.compereName,uc.ilevel,com.I64UserID,com.status,a.agentName ");
   sql.append(" from u_commend_compere_info com ,u_compere_info uc left join webcu.dbo.agent a on uc.agentId=a.agentId ");
   sql.append("where com.I64UserID = uc.I64UserID ");
  
   if (agentId != null){
    sql.append(" and uc.agentId=").append(agentId);
   }
   List<CompereInfoBean> list = this.getJdbcTemplate().query(sql.toString(), new RowMapper(){
    public Object mapRow(ResultSet rs,int index) throws SQLException{
     CompereInfoBean bean = new CompereInfoBean();
     bean.setUserId(rs.getInt("I64UserID"));
     bean.setCompereName(rs.getString("compereName"));
     bean.setLevel(rs.getInt("ilevel"));
     bean.setCommendStatus(rs.getInt("status"));
     bean.setAgentName(rs.getString("agentName"));
     return bean;
    }
   });
   return list;
}
/**
* 更新推荐状态
* @param userId
* @param flag
*/
private void updateCommendFlag(final Integer userId,final int flag){
   //更新主持人的是否推荐状态
   StringBuffer sql = new StringBuffer(200);
   sql.append("update u_compere_info set commendFlag=? where I64UserID=?");
   this.getJdbcTemplate().execute(sql.toString(),new PreparedStatementCallback(){
     public Object doInPreparedStatement(PreparedStatement ps)throws SQLException {
        ps.setInt(1, flag);
        ps.setInt(2, userId);
        ps.execute();
        return null;
     }
   });
}

/**
* 根据室主Id查询主持人对象列表
*
*
*/
public List findCommendCompereListByHostId(Integer hostId) {
   // TODO Auto-generated method stub
   StringBuffer sql = new StringBuffer(200);
   sql.append("select a.I64UserID,a.compereName,a.iLevel from flMusicUserDB.dbo.u_compere_info a ");
   sql.append(" where a.compereNumber in (select compereNumber from RoomDB.dbo.Host_Compere_Mapping where hostNumber="+hostId+") ");
  
   List<CompereInfoBean> list = this.getJdbcTemplate().query(sql.toString(), new RowMapper(){
    public Object mapRow(ResultSet rs,int index) throws SQLException{
     CompereInfoBean bean = new CompereInfoBean();
     bean.setUserId(rs.getInt("I64UserID"));
     bean.setCompereName(rs.getString("compereName"));
     bean.setLevel(rs.getInt("ilevel"));
     return bean;
    }
   });
   return list;
}}