Spring整合JdbcTemplate实现增删改查--基于xml配置

总结：该项目没有使用mybatis框架，仅仅使用了spring，比较容易理解

可以改进一下，使用springmvc和mybatis。将其改进为web项目

 

1，导入需要引入的依赖：Spring ioc + JdbcTemplate+druid+ mysql。pom.xml内容

 4.0.0
 
    com.day02Jdbc
    SpringJdbc
    0.0.1-SNAPSHOT
 
 
    
        
            org.springframework
            spring-context
        
        
            org.slf4j
            slf4j-log4j12
        
        
            junit
            junit
        
        
            mysql
            mysql-connector-java
        
        
        
            org.springframework
            spring-jdbc
        
        
        
            com.alibaba
            druid
        
    
 

2、创建业务层接口及实现类

bean层

实体类:Customer.java

package com.day02Jdbc.domain;
 
import java.io.Serializable;
 
/**
 * @ Author     ：ShaoWei Sun.
 * @ Date       ：Created in 17:00 2018/11/8
 */
public class Customer implements Serializable {
    private Long cust_id;
    private String cust_name;
    private String cust_source;
    private String cust_industry;
    private String cust_level;
    private String cust_address;
    private String cust_phone;
 
    public Long getCust_id() {
        return cust_id;
    }
 
    public void setCust_id(Long cust_id) {
        this.cust_id = cust_id;
    }
 
    public String getCust_name() {
        return cust_name;
    }
 
    public void setCust_name(String cust_name) {
        this.cust_name = cust_name;
    }
 
    public String getCust_source() {
        return cust_source;
    }
 
    public void setCust_source(String cust_source) {
        this.cust_source = cust_source;
    }
 
    public String getCust_industry() {
        return cust_industry;
    }
 
    public void setCust_industry(String cust_industry) {
        this.cust_industry = cust_industry;
    }
 
    public String getCust_level() {
        return cust_level;
    }
 
    public void setCust_level(String cust_level) {
        this.cust_level = cust_level;
    }
 
    public String getCust_address() {
        return cust_address;
    }
 
    public void setCust_address(String cust_address) {
        this.cust_address = cust_address;
    }
 
    public String getCust_phone() {
        return cust_phone;
    }
 
    public void setCust_phone(String cust_phone) {
        this.cust_phone = cust_phone;
    }
 
    @Override
    public String toString() {
        return "Customer{" +
                "cust_id=" + cust_id +
                ", cust_name='" + cust_name + '\'' +
                ", cust_source='" + cust_source + '\'' +
                ", cust_industry='" + cust_industry + '\'' +
                ", cust_level='" + cust_level + '\'' +
                ", cust_address='" + cust_address + '\'' +
                ", cust_phone='" + cust_phone + '\'' +
                '}';
    }
}

 service 层

创建CustomerService.java接口和CustomerServiceImpl.java实现类

package com.day02Jdbc.service;
 
import com.day02Jdbc.domain.Customer;
 
import java.util.List;
 
/**
 * @ Author     ：ShaoWei Sun.
 * @ Date       ：Created in 17:01 2018/11/8
 */
public interface CustomerService {
    /**
     * 业务层：查询所有客户
     * @return
     */
    List findAllCustomer();
}
//impl

package com.day02Jdbc.service.Impl;
 
import com.day02Jdbc.dao.CustomerDao;
import com.day02Jdbc.domain.Customer;
import com.day02Jdbc.service.CustomerService;
 
import java.util.List;
 
/**
 * @ Author     ：ShaoWei Sun.
 * @ Date       ：Created in 17:06 2018/11/8
 */
public class CustomerServiceImpl implements CustomerService {
    private CustomerDao customerDao ;
 
    public void setCustomerDao(CustomerDao customerDao){
        this.customerDao = customerDao;
    }
 
    @Override
    public List findAllCustomer() {
        List list = customerDao.findAll();
        return list;
 
    }
}

3、创建dao层接口及实现类

在这一层可以使用mybatis自动生成dao的实现类，比如CustomerDaoImpl

CustomerDao.java接口

package com.day02Jdbc.dao;
 
import com.day02Jdbc.domain.Customer;
 
import java.util.List;
 
/**
 * @ Author     ：ShaoWei Sun.
 * @ Date       ：Created in 17:08 2018/11/8
 */
public interface CustomerDao {
    List findAll();
}
//impl
package com.day02Jdbc.dao.Impl;
 
import com.day02Jdbc.dao.CustomerDao;
import com.day02Jdbc.domain.Customer;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
 
import java.util.List;
 
/**
 * @ Author     ：ShaoWei Sun.
 * @ Date       ：Created in 17:09 2018/11/8
 */
public class CustomerDaoImpl implements CustomerDao {
    private JdbcTemplate jdbcTemplate;//不需要实例化，通过spring依赖注入进来，采用xml配置，需要提供set方法
 
    public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
    }
 
    @Override
    public List findAll() {
        List list = jdbcTemplate.query("select * from cst_customer",new BeanPropertyRowMapper(Customer.class));
        return list;
    }
}

4、编写Spring配置文件

applicationContext.xml

 5、测试类

package com.day02Jdbc.test;
 
import com.day02Jdbc.domain.Customer;
import com.day02Jdbc.service.CustomerService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
 
import java.util.List;
 
/**
 * @ Author     ：ShaoWei Sun.
 * @ Date       ：Created in 17:15 2018/11/8
 */
public class TestJdbc {
    @Test
    public void test1() {
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        CustomerService customerService = (CustomerService) ac.getBean("customerService");
        List list = customerService.findAllCustomer();
        for (Customer customer : list) {
            System.out.println("customer = " + customer);
        }
    }
}

 

这一个案例还是加深我对ssm的理解，对jdbcTemplate的使用