1,复制spring403 改名 spring403-03。修改beans.xml中的中id为jdbctemplate1的bean和id为studentDao1的bean。在beans.xml中, 在NameParameterJdbcTemplate中通过构造的方法注入dataSource1
<?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:aop="http://www.springframework.org/schema/aop"
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/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:property-placeholder location="jdbc.properties"/>
<bean id="dataSource1" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<bean id="namedParameterJdbcTemplate1"class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate">
<constructor-arg ref="dataSource1"></constructor-arg>
</bean>
<bean id="studentDao1" class="com.cruise.dao.impl.StudentDaoImpl">
<property name="namedParameterJdbcTemplate" ref="namedParameterJdbcTemplate1"></property>
</bean>
<bean id="studentService" class="com.cruise.service.impl.StudentServiceImpl">
<property name="studentDao" ref="studentDao1"></property>
</bean>
</beans>
2,修改studentDaoImpl类中的成员变量jdbcTemplate为NameParameterJdbcTemplate,重新生成set方法。修改studentDaoImpl中的逻辑代码。
package com.cruise.dao.impl;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
import com.cruise.dao.StudentDao;
import com.cruise.model.Student;
public class StudentDaoImpl implements StudentDao{
private NamedParameterJdbcTemplate namedParameterJdbcTemplate;
public void setNamedParameterJdbcTemplate(NamedParameterJdbcTemplate namedParameterJdbcTemplate) {
this.namedParameterJdbcTemplate = namedParameterJdbcTemplate;
}
@Override
public int addStudent(Student student) {
String sql ="insert into t_student values(null,:name,:age)";
MapSqlParameterSource msps= new MapSqlParameterSource();
msps.addValue("name", student.getName());
msps.addValue("age", student.getAge());
return namedParameterJdbcTemplate.update(sql, msps);
}
@Override
public int updateStudent(Student student) {
String sql ="update t_student set name=:name ,age=:age where id=:id";
MapSqlParameterSource msps= new MapSqlParameterSource();
msps.addValue("name", student.getName());
msps.addValue("age", student.getAge());
msps.addValue("id", student.getId());
return namedParameterJdbcTemplate.update(sql, msps);
}
@Override
public int deleteStudent(Integer id) {
String sql ="delete from t_student where id=:id";
MapSqlParameterSource msps= new MapSqlParameterSource();
msps.addValue("id", id);
return namedParameterJdbcTemplate.update(sql, msps);
}
@Override
public List<Student> findStudents() {
String sql ="select * from t_student";
final ArrayList<Student> studentList = new ArrayList<Student>();
namedParameterJdbcTemplate.query(sql, new RowCallbackHandler() {
@Override
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;
}
}
3,运行-测试
第九讲:9.2 NameParameterJdbcTemplate
猜你喜欢
转载自blog.csdn.net/u010393325/article/details/83747564
今日推荐
周排行