Spring JdbcTemplate 的使用与学习(转)

紧接上一篇

(JdbcTemplate是线程安全的，因此可以配置一个简单的JdbcTemplate实例，将这个共享的实例注入到多个DAO类中。辅助的文档)

Spring DAO支持

http://www.cnblogs.com/Fskjb/archive/2009/11/18/1605622.html

Spring JdbcTemplate 的使用与学习

JDBCTemplate 是SPRING 框架自带的一种对sql 语句查询的封装 ，封装非常完善，虽然与Hibernate比起来有一点麻烦，但是学号JDBCTemplate可以让我们用Spirngmvc框架去代替SSH，降低了 我们的学习成本。用起来也更加方便，测试代码如下，包括执行mysql 语句，分页，调用存储过程，返回对象数组，返回整数数组，返回单个对象等

package com.tz.jdbctemplate;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.struts2.json.JSONException;
import org.apache.struts2.json.JSONUtil;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.CallableStatementCallback;
import org.springframework.jdbc.core.CallableStatementCreator;
import org.springframework.jdbc.core.CallableStatementCreatorFactory;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.PreparedStatementCreator;
import org.springframework.jdbc.core.PreparedStatementSetter;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.SqlOutParameter;
import org.springframework.jdbc.core.SqlParameter;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.jdbc.support.GeneratedKeyHolder;
import org.springframework.jdbc.support.KeyHolder;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.tz.bean.User;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:config/applicationContext.xml")
public class TemplateTest {

	@Autowired
	private JdbcTemplate jdbcTemplate;

	//明白的原理，会懂得配置，然后会懂得使用和开发，然后在深入
	@Test
	public void handle() throws SQLException{
		DriverManagerDataSource dataSource = new DriverManagerDataSource();
		dataSource.setDriverClassName("com.mysql.jdbc.Driver");
		dataSource.setUrl("jdbc:mysql://localhost:3306/test");
		dataSource.setUsername("root");
		dataSource.setPassword("xiaoer");
		Connection connection = dataSource.getConnection();
		PreparedStatement statement = connection.prepareStatement("select * from student");
		ResultSet rs = statement.executeQuery();
		while(rs.next()){
			System.out.println(rs.getInt("id")+"==="+rs.getString("name"));
		}
		rs.close();
		statement.close();
		connection.close();
	}

	@Test
	public void handle2(){
		DriverManagerDataSource dataSource = new DriverManagerDataSource();
		dataSource.setDriverClassName("com.mysql.jdbc.Driver");
		dataSource.setUrl("jdbc:mysql://localhost:3306/test");
		dataSource.setUsername("root");
		dataSource.setPassword("xiaoer");
		JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
		jdbcTemplate.query("select * from student", new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				System.out.println(rs.getInt("id")+"==="+rs.getString("name"));
			}
		});
		//hibernate
		//List<Student> students = getSession().createSQLQuery("select * from student").list();
		//List<Student> students = getSession().createQuery("from student").list();
	}

	@Test
	public void handle3(){
		jdbcTemplate.query("select * from student", new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				System.out.println(rs.getInt("id")+"==="+rs.getString("name"));
			}
		});
	}

	@Test
	public void handle4(){
		ApplicationContext context = new ClassPathXmlApplicationContext("classpath:config/applicationContext.xml");
		JdbcTemplate jdbcTemplate = (JdbcTemplate) context.getBean("jdbcTemplate");
		jdbcTemplate.query("select * from student", new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				System.out.println(rs.getInt("id")+"==="+rs.getString("name"));
			}
		});
	}

	/*增加，修改，删除*/
	@Test
	public void handle5(){//几乎不用
		//新增，修改，删除---update()
		final String sql = "INSERT INTO student(name,age,male) VALUES(?,?,?)";//常量效率远远要高于普通变量
		jdbcTemplate.update(new PreparedStatementCreator() {
			@Override
			public PreparedStatement createPreparedStatement(Connection con)
					throws SQLException {
				PreparedStatement statement = con.prepareStatement(sql);
				statement.setString(1, "zhangsan");
				statement.setInt(2, 100);
				statement.setInt(3, 1);
				return statement;
			}
		});
	}

	@Test
	public void handle6(){//不建议使用
		//新增，修改，删除---update()
		final String sql = "INSERT INTO student(name,age,male) VALUES('keke',56,1)";//常量效率远远要高于普通变量
		jdbcTemplate.update(sql);
	}

	@Test
	public void handle8(){//可以使用
		final String sql = "INSERT INTO student(name,age,male) VALUES(?,?,?)";//常量效率远远要高于普通变量
		//PreparedStatementSetter 就是专门给所有sql语句(insert update select delete)带有?赋值的匿名内部类。
		jdbcTemplate.update(sql,new PreparedStatementSetter() {
			@Override
			public void setValues(PreparedStatement ps) throws SQLException {
				ps.setString(1, "kekexxx");
				ps.setInt(2, 587);
				ps.setInt(3, 0);
			}
		});
	}
	@Test
	public void handle7(){//经常使用
		//新增，修改，删除---update()
		final String sql = "INSERT INTO student(name,age,male) VALUES(?,?,?)";//常量效率远远要高于普通变量
		jdbcTemplate.update(sql,"xxxxx",686,0);
	}

	@Test
	public void handle9(){//经常使用
		final String sql = "INSERT INTO student(name,age,male) VALUES(?,?,?)";//常量效率远远要高于普通变量
		Object[] params = {"mark", 16,1};
		jdbcTemplate.update(sql,params,new int[]{Types.VARCHAR,Types.INTEGER,Types.INTEGER});
		//jdbcTemplate.update(sql, new Object[]{"mark", 16,1},new int[]{Types.VARCHAR,Types.INTEGER,Types.INTEGER});
	}

	//在新增的时候有时候需要返回主键
	@Test
	public void handle10(){
		final String sql = "INSERT INTO student(name,age,male) VALUES(?,?,?)";//常量效率远远要高于普通变量
		KeyHolder keyHolder = new GeneratedKeyHolder();
		jdbcTemplate.update(new PreparedStatementCreator() {
			@Override
			public PreparedStatement createPreparedStatement(Connection con)
					throws SQLException {
				PreparedStatement statement = con.prepareStatement(sql);
				statement.setString(1, "zhangsan");
				statement.setInt(2, 100);
				statement.setInt(3, 1);
				return statement;
			}
		}, keyHolder);
		//返回你新增的主键
		int key = keyHolder.getKey().intValue();
		System.out.println("我添加的数据返回的主键是:======"+key);
	}

	@Test
	public void handle11(){//经常使用
		//新增，修改，删除---update()
		final String sql = "UPDATE student SET `name`=?,age=? WHERE name=?";//常量效率远远要高于普通变量
		jdbcTemplate.update(sql,"xiaoer",10,"小丑");
	}

	@Test
	public void handle12(){//经常使用
		//新增，修改，删除---update()
		final String sql = "delete from student where id = ?";//常量效率远远要高于普通变量
		jdbcTemplate.update(sql,7);
	}

	/*
	 * *************************************查询*******************************
	 * RowCallbackHandler:无返回值，在大数据量处理的一定使用RowCallbackHandler
	 * RowMapper：这个返回的是一个集合.
	 * 给所有的用户(100)用户发一条短信,RowCallbackHandler
	 * RowMapper---100万集合中--在发送
	 *
	 *  jdbcTemplate.query(psc, rch);
	 *	jdbcTemplate.query(sql, rch);
	 *	jdbcTemplate.query(sql, pss, rch);
	 *
	 *  下面这三个是常用的
	 *	jdbcTemplate.query(sql, rch, args);
	 *	jdbcTemplate.query(sql, args, rch);
	 *	jdbcTemplate.query(sql, args, argTypes, rch);
	 *
	 */
	@Test
	public void handle13(){//不常用
		//oracle sqlservler mysql:查询表中所有的数据的时候，数据库服务器并不会把所有的数据都都放内存中，而在通过里面数据服务器里面的默认因子去装载到内存中
		//oracle ==10---io()
		final String sql = "select * from student where male = ?";
		final List<User> users = new ArrayList<User>();
		jdbcTemplate.query(new PreparedStatementCreator() {
			@Override
			public PreparedStatement createPreparedStatement(Connection con)
					throws SQLException {
				PreparedStatement statement = con.prepareStatement(sql);
				statement.setInt(1, 0);
				return statement;
			}
		}, new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				users.add(user);
			}
		});

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	@Test
	public void handle14(){//可能会使用，不建议
		final String sql = "select * from student where male = 0";
		final List<User> users = new ArrayList<User>();
		jdbcTemplate.query(sql,new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				users.add(user);
			}
		});

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	@Test
	public void handle16(){//可以使用,不推荐
		final String sql = "select * from student where male = ?";
		final List<User> users = new ArrayList<User>();
		jdbcTemplate.query(sql,new PreparedStatementSetter() {
			@Override
			public void setValues(PreparedStatement ps) throws SQLException {
				ps.setInt(1, 0);
			}
		},new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				users.add(user);
			}
		});

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	@Test
	public void handle17(){//经常使用,推荐
		final String sql = "select * from student where male = ?";
		final List<User> users = new ArrayList<User>();
		jdbcTemplate.query(sql,new Object[]{0},new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				users.add(user);
			}
		});

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	@Test
	public void handle18(){//经常使用,推荐
		final String sql = "select * from student where male = ? ";
		final List<User> users = new ArrayList<User>();
		jdbcTemplate.query(sql,new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				users.add(user);
			}
		},0);

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	@Test
	public void handle19(){//经常使用,推荐
		final String sql = "select * from student where male = ? and age > ?";
		final List<User> users = new ArrayList<User>();
		jdbcTemplate.query(sql,new Object[]{0,20},new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				users.add(user);
			}
		});

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	@Test
	public void handle21(){//经常使用,不推荐
		final String sql = "select * from student where male = ? and age > ?";
		final List<User> users = new ArrayList<User>();
		jdbcTemplate.query(sql,new Object[]{0,20},new int[]{Types.INTEGER,Types.INTEGER},new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				users.add(user);
			}
		});

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	@Test
	public void handle20(){//经常使用,推荐
		final String sql = "select * from student where male = ? and age > ? ";
		final List<User> users = new ArrayList<User>();
		jdbcTemplate.query(sql,new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				users.add(user);
			}
		},0,20);

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	/**
	 *
	 * RowMapper---100万集合中--在发送
	 *
	 *  <T> List<T> jdbcTemplate.query(psc, rowMapper);
	 *	<T> List<T>jdbcTemplate.query(sql, rowMapper);
	 *	<T> List<T>jdbcTemplate.query(sql, pss, rowMapper);
	 *
	 *  下面这三个是常用的
	 *	<T> List<T>jdbcTemplate.query(sql, rowMapper, args);
	 *	<T> List<T>jdbcTemplate.query(sql, args, rowMapper);
	 *	<T> List<T>jdbcTemplate.query(sql, args, argTypes, rowMapper);
	 */
	@Test
	public void handle22(){//经常使用,推荐
		final String sql = "select * from student where male = ? and age > ? ";
		List<User> users = jdbcTemplate.query(sql,new RowMapper<User>() {
			@Override
			public User mapRow(ResultSet rs, int index) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				return user;
			}
		},0,20);

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	@Test
	public void handle23(){//经常使用,推荐
		final String sql = "select * from student where male = ? and age > ? ";
		List<User> users = jdbcTemplate.query(sql,new Object[]{0,20},new RowMapper<User>() {
			@Override
			public User mapRow(ResultSet rs, int index) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				return user;
			}
		});

		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
		}
	}

	//当个实体对象返回
	@Test
	public void handle24(){//经常使用,推荐
		final String sql = "select * from student where id = ? ";
		User user = jdbcTemplate.query(sql,new Object[]{8},new RowMapper<User>() {
			@Override
			public User mapRow(ResultSet rs, int index) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				return user;
			}
		}).get(0);
		System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
	}

	@Test
	public void handle25(){//经常使用,推荐
		final String sql = "select * from student where id = ? ";
		final User user = new User();
		jdbcTemplate.query(sql,new Object[]{8},new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
			}
		});
		System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
	}

	@Test
	public void hanle26(){
		final String sql = "select * from student where id = ? ";
		User user = jdbcTemplate.queryForObject(sql, new RowMapper<User>() {
			@Override
			public User mapRow(ResultSet rs, int rowNum) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("name"));
				user.setAge(rs.getInt("age"));
				return user;
			}
		},8);
		System.out.println(sql);
		System.out.println(user.getUserId()+"==="+user.getUsername()+"==="+user.getAge());
	}

	@Test
	public void hanle27(){
		final String sql = "select * from student where id = ? ";
		Map<String, Object> map = jdbcTemplate.queryForMap(sql,8);
		System.out.println(map);
	}

	//求总数(把常用的聚合函数sum,max,avg,自己去实现一次,日期，截取，替换这些常用sql要去总结和归纳)
	@Test
	public void handle28(){
		final String sql = "SELECT count(1) from student";
		jdbcTemplate.query(sql, new RowCallbackHandler() {
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				System.out.println(rs.getInt(1));
			}
		});
	}

	@Test
	public void test2(){
		sayHello("Nio","BUKENG","robinName");
	}

	public void sayHello(String ...names){
		for (String string : names) {
			System.out.println(string);
		}
	}

	/**
	 * int queryForInt(sql)
	 * int queryForInt(sql,Object...args)
	 * int queryForInt(sql,Object[] params,int[] types)
	 *
	 */
	@Test
	public void handle29(){
		//第一种方式
		//final String sql = "SELECT count(1) from student where age > 30 && male = 1";
		//int count = jdbcTemplate.queryForInt(sql);
		final String sql = "SELECT count(1) from student where age > ? && male = ?";
		int count =jdbcTemplate.queryForInt(sql,30,1);
		System.out.println("count=============="+count);
		int count2 = jdbcTemplate.queryForInt(sql, new Object[]{30,1},new int[]{Types.INTEGER,Types.INTEGER});
		System.out.println("count2=============="+count2);
	}

	@Test
	public void handle30(){
		final String sql = "SELECT count(1) from student where age > ? && male = ?";
		Integer count = jdbcTemplate.queryForObject(sql, new Object[]{30,1},new RowMapper<Integer>(){
			@Override
			public Integer mapRow(ResultSet rs, int rowNum) throws SQLException {
				return rs.getInt(1);
			}
		});
		System.out.println("================"+count);
	}

	//求年龄大于30岁的总数和综合，和平均数
	@Test
	public void handle31(){
		final String sql = "SELECT sum(age) as s,count(1) as c ,avg(age) from student where age > ? && male = ?";

		Map<String, Object> map = jdbcTemplate.queryForObject(sql, new
Object[]{30,1},new RowMapper<Map<String, Object>>(){
			@Override
			public Map<String, Object> mapRow(ResultSet rs, int rowNum) throws SQLException {
				Map<String, Object> map = new HashMap<String, Object>();
				map.put("sum", rs.getInt(1));
				map.put("count", rs.getInt(2));
				map.put("avg", rs.getInt(3));
				return map;
			}
		});
		System.out.println("================"+map);
	}

	@Test
	public void handle32(){
		final String sql = "SELECT sum(age) as s,count(1) as c ,avg(age) from student where age > ? && male = ?";
		Integer[] integers = jdbcTemplate.queryForObject(sql, new Object[]{30,1},new RowMapper<Integer[]>(){
			@Override
			public Integer[] mapRow(ResultSet rs, int rowNum) throws SQLException {
				Integer[] integers = new Integer[3];
				integers[0] = rs.getInt(1);
				integers[1] = rs.getInt(2);
				integers[2] = rs.getInt(3);
				return integers;
			}
		});
		for (Integer integer : integers) {
			System.out.println("================"+integer);
		}
	}

	@Test
	public void handle33(){
		final String sql = "SELECT sum(age) as s,count(1) as c ,avg(age) from student where age > ? && male = ?";
		Count count= jdbcTemplate.queryForObject(sql, new Object[]{30,1},new RowMapper<Count>(){
			@Override
			public Count mapRow(ResultSet rs, int rowNum) throws SQLException {
				Count count = new Count();
				count.setSum(rs.getInt(1));
				count.setCount(rs.getInt(2));
				count.setAvg(rs.getInt(3));
				return count;
			}
		});
		System.out.println("================"+count.getSum());
		System.out.println("================"+count.getCount());
		System.out.println("================"+count.getAvg());
	}

	@Test
	public void handle34() throws JSONException{
		List<Map<String, Object>> maps = jdbcTemplate.queryForList("select * from student");
		System.out.println(maps);
		//struts2 -json-lib.jar --xwork.jar
		String jsonString = JSONUtil.serialize(maps, null, null, false, true);
		System.out.println(jsonString);

		//[{id=1, name=单晨, age=17, male=1, createtime=2014-10-19 20:39:04.0,
updatetime=null}, {id=2, name=keke, age=30, male=1,
createtime=2014-10-19 20:39:25.0, updatetime=null}, {id=3, name=赵龙,
age=22, male=1, createtime=2014-10-19 20:39:25.0, updatetime=null},
{id=4, name=白羊, age=21, male=0, createtime=2014-10-19 20:39:46.0,
updatetime=null}, {id=6, name=xiaoer, age=10, male=0,
createtime=2014-10-19 20:40:28.0, updatetime=null}, {id=8, name=keke,
age=21, male=1, createtime=2015-02-26 23:40:33.0, updatetime=null},
{id=9, name=fei, age=1, male=1, createtime=2015-02-26 23:42:03.0,
updatetime=null}, {id=10, name=zhangsan, age=100, male=1,
createtime=2015-02-26 23:45:17.0, updatetime=null}, {id=11, name=keke,
age=56, male=1, createtime=2015-02-26 23:46:37.0, updatetime=null},
{id=12, name=xxxxx, age=686, male=0, createtime=2015-02-26 23:47:59.0,
updatetime=null}, {id=13, name=kekexxx, age=587, male=0,
createtime=2015-02-26 23:53:27.0, updatetime=null}, {id=14, name=mark,
age=16, male=1, createtime=2015-02-26 23:55:58.0, updatetime=null},
{id=15, name=mark, age=16, male=1, createtime=2015-02-26 23:57:47.0,
updatetime=null}, {id=16, name=zhangsan, age=100, male=1,
createtime=2015-02-27 00:01:26.0, updatetime=null}]

//[{"id":1,"name":"单
晨","age":17,"male":1,"createtime":"2014-10-19T20:39:04"},
{"id":2,"name":"keke","age":30,"male":1,"createtime":"2014-10-19T20:39:25"},
{"id":3,"name":"赵
龙","age":22,"male":1,"createtime":"2014-10-19T20:39:25"},
{"id":4,"name":"白
羊","age":21,"male":0,"createtime":"2014-10-19T20:39:46"},{"id":6,"name":"xiaoer","age":10,"male":0,"createtime":"2014-10-19T20:40:28"},{"id":8,"name":"keke","age":21,"male":1,"createtime":"2015-02-26T23:40:33"},{"id":9,"name":"fei","age":1,"male":1,"createtime":"2015-02-26T23:42:03"},{"id":10,"name":"zhangsan","age":100,"male":1,"createtime":"2015-02-26T23:45:17"},{"id":11,"name":"keke","age":56,"male":1,"createtime":"2015-02-26T23:46:37"},{"id":12,"name":"xxxxx","age":686,"male":0,"createtime":"2015-02-26T23:47:59"},{"id":13,"name":"kekexxx","age":587,"male":0,"createtime":"2015-02-26T23:53:27"},{"id":14,"name":"mark","age":16,"male":1,"createtime":"2015-02-26T23:55:58"},{"id":15,"name":"mark","age":16,"male":1,"createtime":"2015-02-26T23:57:47"},{"id":16,"name":"zhangsan","age":100,"male":1,"createtime":"2015-02-27T00:01:26"}]
	}

	@Test
	//错误
	public void handle35() throws JSONException{
		//如果要想支持的话，那么久和hibernate一样了。
		List<Student> students = jdbcTemplate.queryForList("select * from student", Student.class);
		String jsonString = JSONUtil.serialize(students, null, null, false, true);
		System.out.println(jsonString);

	}

	@Test
	public void handle36(){
		//execute:动态创建数据库，表，索引，alert 存储过程，函数，触发器
		jdbcTemplate.execute("create database keke");
	}

	//批量处理（修改，删除，新增）为了解决大数量的导入和导出的时候，一些大批量量数据的的发送，100万发一条的短信

	@Test
	public void hanler37(){
		jdbcTemplate.query("select * from student",new RowCallbackHandler(){
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				//给学生发送短信
			}
		});
	}

	@Test
	public void hanler38(){
		//我要把所有的学生的名称加上一个前缀tz
		final List<Student> students = new ArrayList<Student>();
		jdbcTemplate.query("select * from student",new RowCallbackHandler(){
			@Override
			public void processRow(ResultSet rs) throws SQLException {
				//给学生发送短信
				Student student = new Student();
				student.setId(rs.getInt("id"));
				student.setName(rs.getString("name"));
				students.add(student);
			}
		});

		//如果牵涉到update 删除的时候一定要非常的谨慎条件十分满足。
		//所有的数据删除一定要逻辑删除，而且数据库一定要每天必须一定要备份.
		//服务器的IO瓶颈，
//		for (Student student : students) {
//			jdbcTemplate.update("update student set name=? where id = ?","tz"+student.getName(),student.getId());
//		}

		//第一种写法
//		jdbcTemplate.batchUpdate("update student set name=? where id = ?", new BatchPreparedStatementSetter() {
//			@Override
//			public void setValues(PreparedStatement ps, int index) throws SQLException {
//				Student student = students.get(index);
//				ps.setString(1, student.getName());
//				ps.setInt(2, student.getId());
//			}
//
//			@Override
//			public int getBatchSize() {
//				return students.size();
//			}
//		});

		//第二种写法
		List<Object[]> objects = new ArrayList<Object[]>();
		for (Student student : students) {
			Object[] object = {student.getName()+"我爱你们",student.getId()};
			objects.add(object);
		}

		jdbcTemplate.batchUpdate("update student set name=? where id = ?", objects);
	}

	//调用存储过程(单条记录和多条记录)

	@Test
	public void handle39(){
		List<SqlParameter> sqlParameters = new ArrayList<SqlParameter>();
		Map<String, Object> map = jdbcTemplate.call(new CallableStatementCreator() {
			@Override
			public CallableStatement createCallableStatement(Connection con)
					throws SQLException {
				CallableStatement statement = con.prepareCall("{call keke()}");
//				ResultSet rs = statement.executeQuery();
//				while(rs.next()){
//
//				}
				return statement;
			}
		}, sqlParameters);

		System.out.println(map.get("#result-set-1"));
	}

	@Test
	public void handle40(){
		List<SqlParameter> sqlParameters = new ArrayList<SqlParameter>();
		final List<Student> students = new ArrayList<Student>();
		jdbcTemplate.call(new CallableStatementCreator() {
			@Override
			public CallableStatement createCallableStatement(Connection con)
					throws SQLException {
				CallableStatement statement = con.prepareCall("{call keke()}");
				ResultSet rs = statement.executeQuery();
				Student student = null;
				while(rs.next()){
					student= new Student();
					student.setId(rs.getInt("id"));
					student.setName(rs.getString("name"));
					students.add(student);
				}
				return statement;
			}
		}, sqlParameters);

		for (Student student : students) {
			System.out.println(student.getId()+"==="+student.getName());
		}
	}

	@Test
	public void hanle41(){
		List<SqlParameter> sqlParameters = new ArrayList<SqlParameter>();
		sqlParameters.add(new SqlParameter("cage", Types.INTEGER));
		sqlParameters.add(new SqlOutParameter("number", Types.INTEGER));
		sqlParameters.add(new SqlOutParameter("name", Types.VARCHAR));
		Map<String, Object> map = jdbcTemplate.call(new CallableStatementCreator() {
			@Override
			public CallableStatement createCallableStatement(Connection con)
					throws SQLException {
				CallableStatement statement = con.prepareCall("{call USER_RELATIONS(?,?,?)}");
				statement.setInt(1, 17);
				return statement;
			}
		}, sqlParameters);

		System.out.println(map.get("number"));
		System.out.println(map.get("name"));
	}
	@Test
	public void hanle42(){
		CallableStatementCreatorFactory factory = new CallableStatementCreatorFactory("{call USER_RELATIONS(?,?,?)}");
		factory.addParameter(new SqlParameter("cage", Types.INTEGER));
		factory.addParameter(new SqlOutParameter("number", Types.INTEGER));
		factory.addParameter(new SqlOutParameter("name", Types.VARCHAR));
		Map<String,Integer> params = new HashMap<String, Integer>();
		params.put("cage", 17);
		CallableStatementCreator creator = factory.newCallableStatementCreator(params);

//====================================【出异常了哦!!!!】
CallableStatementCallback; SQL [{call USER_RELATIONS(?,?,?)}]; Parameter
 number 1 is not an OUT parameter; nested exception is
java.sql.SQLException: Parameter number 1 is not an OUT parameter
		jdbcTemplate.execute(creator,new CallableStatementCallback<Map<String, Object>>() {
			@Override
			public Map<String, Object> doInCallableStatement(
					CallableStatement cs) throws SQLException,
					DataAccessException {
				cs.execute();
				Map<String,Object> map = new HashMap<String, Object>();
				System.out.println(cs.getInt(2)+"========="+cs.getString(3));
				return map;
			}
		});

	}

	//分页

	@Test
	public void hanle43(){
		List<User> users = findUsers("578789",10, 10);
		for (User user : users) {
			System.out.println(user.getUserId()+"==="+user.getUsername());
		}
	}

	public List<User> findUsers(String password,int pageNo,int pageSize){
		String sql = "select * from user where 1=1 ";
		String countSql ="select count(1) from user where 1=1 ";
		if(password!=null){
			sql+=" and password = '"+password+"'";
			countSql+=" and password = '"+password+"' ";
		}
		System.out.println(countSql);
		List<User> users = jdbcTemplate.query(sql+" limit ?,?", new RowMapper<User>(){
			@Override
			public User mapRow(ResultSet rs, int index) throws SQLException {
				User user = new User();
				user.setUserId(rs.getInt("id"));
				user.setUsername(rs.getString("username"));
				return user;
			}
		},pageNo,pageSize);

		Integer totalCount = jdbcTemplate.queryForObject(countSql,Integer.class);
		System.out.println("总页数是:"+totalCount);
		return users;
	}

}

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