spring整合jdbc方法一

用了一段时间的spring这，闲来没事做一下spring整合jdbc

目录文件

导入jar包

由于spring的jar包是在myeclipse中自动导入的有些暂时用不到的也没有处理。

Emp类

package com.v2uc.entity;
 
import java.util.Date;
 
public class Emp {
    private Integer empno;
    private String ename;
    private String job;
    private Integer mgr;
    private Date hiredate;
    private Double sal;
    private Double comm;
    private Integer deptno;
 
    public Integer getEmpno() {
        return empno;
    }
    public void setEmpno(Integer empno) {
        this.empno = empno;
    }
    public String getEname() {
        return ename;
    }
    public void setEname(String ename) {
        this.ename = ename;
    }
    public String getJob() {
        return job;
    }
    public void setJob(String job) {
        this.job = job;
    }
    public Integer getMgr() {
        return mgr;
    }
    public void setMgr(Integer mgr) {
        this.mgr = mgr;
    }
    public Date getHiredate() {
        return hiredate;
    }
    public void setHiredate(Date hiredate) {
        this.hiredate = hiredate;
    }
    public Double getSal() {
        return sal;
    }
    public void setSal(Double sal) {
        this.sal = sal;
    }
    public Double getComm() {
        return comm;
    }
    public void setComm(Double comm) {
        this.comm = comm;
    }
    public Integer getDeptno() {
        return deptno;
    }
    public void setDeptno(Integer deptno) {
        this.deptno = deptno;
    }
 
}

映射文件EmpMapping

package com.v2uc.entity;
 
import java.sql.ResultSet;
import java.sql.SQLException;
 
import org.springframework.jdbc.core.RowMapper;
 
public class EmpMapping implements RowMapper<Emp> {
    public Emp mapRow(ResultSet rs, int rowIndex) throws SQLException{
        Emp emp = new Emp();
        emp.setEmpno(rs.getInt("EMPNO"));
        emp.setEname(rs.getString("ENAME"));
        emp.setJob(rs.getString("job"));
        emp.setMgr(rs.getInt("MGR"));
        emp.setHiredate(rs.getDate("HIREDATE"));
        emp.setSal(rs.getDouble("SAL"));
        emp.setComm(rs.getDouble("COMM"));
        emp.setDeptno(rs.getInt("DEPTNO"));
        return emp;
    }
}

EmpDao接口

package com.v2uc.dao;
 
import java.util.List;
import com.v2uc.entity.Emp;
 
public interface EmpDao {
 
    public void save(Emp emp);
    public void update(Emp emp);
    public void delete(int no);
    public Emp findByNo(int no);
    public List<Emp> findAll();
 
}

JdbcEmpDao实现

package com.v2uc.dao;
 
import java.util.List;
 
import javax.activation.DataSource;
 
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.support.JdbcDaoSupport;
 
import com.v2uc.entity.Emp;
import com.v2uc.entity.EmpMapping;
 
public class JdbcEmpDao extends JdbcDaoSupport implements EmpDao {
 
    private DataSource dataSource;
 
    public void setDataSource(DataSource dataSource){
        this.dataSource = dataSource;
    }
 
    @Override
    public void save(Emp emp) {
        // TODO Auto-generated method stub
 
    }
 
    @Override
    public void update(Emp emp) {
        // TODO Auto-generated method stub
 
    }
 
    @Override
    public void delete(int no) {
        // TODO Auto-generated method stub
 
    }
 
    @Override
    public Emp findByNo(int no) {
        // TODO Auto-generated method stub
        return null;
    }
 
    @Override
    public List<Emp> findAll() {
        String sql = "select * from t_emp";
        RowMapper<Emp> mapper = new EmpMapping();
        List<Emp> list = super.getJdbcTemplate().query(sql,mapper);
        return list;
    }
 
}

xml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"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd">
 
<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" ></property>
    <property name="url" value="jdbc:mysql://127.0.0.1:3306/test"></property>
    <property name="username" value="root"></property>
    <property name="password" value=""></property>
</bean>
<bean id="jdbcEmpDao1" class="com.v2uc.dao.JdbcEmpDao">
    <property name="dataSource" ref="myDataSource"></property>
</bean>
 
</beans>

Test单元测试

package com.v2uc.test;
 
import java.util.List;
 
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
 
import com.v2uc.dao.EmpDao;
import com.v2uc.entity.Emp;
 
public class Test {
 
    @Test
    public void test() {
        String conf = "applicationContext.xml";
        ApplicationContext ac = new ClassPathXmlApplicationContext(conf);
        EmpDao empDao = ac.getBean("jdbcEmpDao1",EmpDao.class);
        List<Emp> list = empDao.findAll();
        for(Emp emp : list){
            System.out.println(emp.getEname());
        }
 
    }
 
}

遇到问题

mysql 创建连接是 Cannot create PoolableConnectionFactory (Unknown character set: 'utf8mb4')

Cannot create PoolableConnectionFactory (Unknown character set: 'utf8mb4')

 

maven 依赖换版本
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>

更换5.1.6的jar包即可解决该问题

简单原创地址：http://www.cnblogs.com/maoyali/p/8813710.html