spring JdbcTemplate、NamedParameterJdbcTemplate

• JdbcTemplate 配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">

	<context:component-scan base-package="com.spring"></context:component-scan>

	<!-- 1，引入外部contextSchema命名空间； 2，导入外部配置文件 -->
	<context:property-placeholder location="classpath:./jdbc.properties" />
	
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
		destroy-method="close">
		<property name="driverClass" value="${jdbc.driverClassName}" />
		<property name="jdbcUrl" value="${jdbc.url}" />
		<property name="user" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
	</bean>

	<!-- 创建spring jdbcTemplate -->
 	 <bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate">
		<property name="dataSource" ref="dataSource"></property>
	</bean>  

</beans>

 dataSource properties文件

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.username=admin
jdbc.password=admin
jdbc.url=jdbc:mysql://localhost:3306/springtest

 Repository类

@Repository
public class StudentRepository implements BasicRepository<Student> {
	
	@Autowired
	JdbcTemplate jdbcTemplate;

	
	public int save(Student t) {
		String sql = "insert into student values(null,?,?)";
		Object[] params = new Object[]{t.getName(),t.getAge()};
		
		return jdbcTemplate.update(sql,params);
	}

	public int update(Student t) {
		String sql = "update student set name=?,age=? where id=?";
		Object[] params = new Object[]{t.getName(),t.getAge(),t.getId()};
		
		return jdbcTemplate.update(sql,params);
	}

	public int delete(int id) {
		String sql = "delete from student where id=?";
		Object[] params = new Object[]{id};
		
		return jdbcTemplate.update(sql,params);
	}

	public List<Student> findAll() {
		String sql = "select * from student";
		final List<Student> studentList = new ArrayList<Student>();
		jdbcTemplate.query(sql, new RowCallbackHandler(){

			public void processRow(ResultSet rs) throws SQLException {
				Student student = new Student();
				student.setId(rs.getInt("id"));
				student.setName(rs.getString("name"));
				student.setAge(rs.getInt("age"));
				studentList.add(student);
			}
			
		});
		return studentList;
	}


}

 这样JdbcTemplate配置就ok了。

NamedParameterJdbcTemplate配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">

	<context:component-scan base-package="com.spring"></context:component-scan>

	<!-- 1，引入外部contextSchema命名空间； 2，导入外部配置文件 -->
	<context:property-placeholder location="classpath:./jdbc.properties" />
	
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
		destroy-method="close">
		<property name="driverClass" value="${jdbc.driverClassName}" />
		<property name="jdbcUrl" value="${jdbc.url}" />
		<property name="user" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
	</bean>
	
	<!-- 创建spring NamedParameter JdbcTemplate -->
	<bean class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate" id="namedParameterJdbcTemplate">
		<constructor-arg name="dataSource" ref="dataSource"/>
	</bean>

</beans>

 Repository类：

@Repository("studentRepository")
public class StudentRepositoryByNamed implements BasicRepository<Student>{
	
	@Autowired
	NamedParameterJdbcTemplate namedParameterJdbcTemplate;
	
	public int save(Student t) {
		String sql = "insert into student values(null,:name,:age)";
		MapSqlParameterSource sps = new MapSqlParameterSource();
		sps.addValue("name", t.getName());
		sps.addValue("age", t.getAge());
		
		return namedParameterJdbcTemplate.update(sql,sps);
	}

	public int update(Student t) {
		String sql = "update student set name=:name,age=:age where id=:id";
		MapSqlParameterSource sps = new MapSqlParameterSource();
		sps.addValue("name",t.getName());
		sps.addValue("age", t.getAge());
		sps.addValue("id", t.getId());
		return namedParameterJdbcTemplate.update(sql,sps);
	}

	public int delete(int id) {
		String sql = "delete from student where id=:id";
		
		MapSqlParameterSource sps = new MapSqlParameterSource();
		sps.addValue("id", id);
		
		return namedParameterJdbcTemplate.update(sql,sps);
	}
	
	public Student getStudent(int id){
		String sql = "select * from student where id=:id";
		MapSqlParameterSource sps = new MapSqlParameterSource();
		sps.addValue("id",id);
		final Student student = new Student();
		namedParameterJdbcTemplate.query(sql, sps,new RowCallbackHandler(){

			public void processRow(ResultSet rs) throws SQLException {
				
				student.setId(rs.getInt("id"));
				student.setName(rs.getString("name"));
				student.setAge(rs.getInt("age"));
			}
			
		});
		return student;
	}

	public List<Student> findAll() {
		String sql = "select * from student";
		final List<Student> studentList = new ArrayList<Student>();
		namedParameterJdbcTemplate.query(sql, new RowCallbackHandler(){

			public void processRow(ResultSet rs) throws SQLException {
				Student student = new Student();
				student.setId(rs.getInt("id"));
				student.setName(rs.getString("name"));
				student.setAge(rs.getInt("age"));
				studentList.add(student);
			}
			
		});
		return studentList;
	}
}