本章使用的是 scott 用户
Emp 实体类
package cn.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;
@Override
public String toString() {
return "Emp [empno=" + empno + ", ename=" + ename + ", job=" + job
+ ", mgr=" + mgr + ", hiredate=" + hiredate + ", sal=" + sal
+ ", comm=" + comm + ", deptno=" + deptno + "]";
}
public Emp() {
}
public Emp(String ename, String job, Integer mgr, Date hiredate,
Double sal, Double comm, Integer deptno) {
this.ename = ename;
this.job = job;
this.mgr = mgr;
this.hiredate = hiredate;
this.sal = sal;
this.comm = comm;
this.deptno = deptno;
}
public Emp(Integer empno, String ename, String job, Integer mgr,
Date hiredate, Double sal, Double comm, Integer deptno) {
this.empno = empno;
this.ename = ename;
this.job = job;
this.mgr = mgr;
this.hiredate = hiredate;
this.sal = sal;
this.comm = comm;
this.deptno = 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;
}
}
EmpDao 业务类
package cn.dao;
import java.util.List;
import java.util.Map;
import cn.entity.Emp;
public interface EmpDao {
public List<Map<String, Object>> findEmpAndDept();
public List<Emp> findAllEmps();
public Emp findEmp(Integer empno);
public int countEmp(Integer deptno);
public int save(Emp emp);
}
package cn.dao.impl;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.support.JdbcDaoSupport;
import cn.dao.EmpDao;
import cn.entity.Emp;
public class EmpDaoImpl extends JdbcDaoSupport implements EmpDao {
/**
* 内部类，将结果与类进行封装
* */
private class EmpRowMapper implements RowMapper<Emp>{
@Override
public Emp mapRow(ResultSet rs,int rowNum) 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;
}
}
/**
* 每条记录封装成 Map 对象 K- 列名 V- 记录内容
* */
@Override
public List<Map<String, Object>> findEmpAndDept() {
return super.getJdbcTemplate().queryForList(
"select empno, ename, sal, comm, dname from emp,dept where emp.deptno = dept.deptno");
}
@Override
public List<Emp> findAllEmps() {
return super.getJdbcTemplate().query(
"select empno, ename, job, mgr, hiredate, sal, comm, deptno from emp",
new EmpRowMapper());
}
@Override
public Emp findEmp(Integer empno) {
return super.getJdbcTemplate().queryForObject(
"select empno, ename, job, mgr, hiredate, sal, comm, deptno from emp where empno=?",
new EmpRowMapper(),empno);
}
@Override
public int countEmp(Integer deptno) {
return super.getJdbcTemplate().queryForInt(
"select count(*) from emp where deptno=?",deptno);
}
@Override
public int save(Emp emp) {
return super.getJdbcTemplate().update(
"insert into emp (empno, ename, job, mgr, hiredate, sal, comm, deptno) values (seq_emp.nextval, ?, ?, ?, ?, ?, ?, ?)",
emp.getEname(),emp.getJob(),emp.getMgr(),emp.getHiredate(),
emp.getSal(),emp.getComm(),emp.getDeptno()
);
}
}
applicationContext.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-3.1.xsd"> <!-- 数据源配置 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="oracle.jdbc.OracleDriver" /> <property name="url" value="jdbc:oracle:thin:@localhost:1521:oracle11" /> <property name="username" value="scott" /> <property name="password" value="tiger" /> </bean> <!-- 配置 jbdc 模板并注入 dataSource --> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 配置 DAO --> <bean id="empDao" class="cn.dao.impl.EmpDaoImpl"> <property name="jdbcTemplate" ref="jdbcTemplate"></property> </bean> </beans>
TestEmp JUnit测试类
package cn.test;
import java.util.Date;
import java.util.List;
import java.util.Map;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import cn.dao.EmpDao;
import cn.entity.Emp;
public class TestEmp {
EmpDao empDao;
static ApplicationContext ctx;
@BeforeClass
public static void init(){
ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
}
@Before
public void setUp(){
empDao=(EmpDao) ctx.getBean("empDao");
}
@After
public void tearDown(){
empDao=null;
}
@AfterClass
public static void destory(){
ctx=null;
}
//@Test
public void tesFindEmpAndDept(){
List<Map<String, Object>> emps = empDao.findEmpAndDept();
//每个 Map 代表一条记录
for (Map<String, Object> emp : emps) {
System.out.println("编号："+emp.get("empno")+
"，姓名："+emp.get("ename")+"，工资："+
emp.get("sal")+"，部门："+emp.get("dname"));
}
}
//@Test
public void testFindAllEmps(){
List<Emp> emps = empDao.findAllEmps();
for (Emp emp : emps) {
System.out.println(emp);
}
}
//@Test
public void testFindEmp(){
System.out.println(empDao.findEmp(7782));
}
//@Test
public void testCountEmp(){
System.out.println(empDao.countEmp(20));
}
@Test
public void testSave(){
Emp emp = new Emp("景临境", "CLERK", 7902, new Date(), 800.00, 300.00, 30);
System.out.println(empDao.save(emp));
}
}
效果图：
