package com.ytkj.entity;

import javax.persistence.*;
import java.io.Serializable;

/**
 *          @Entity
 *         	作用:指定当前类是实体类。
 *         @Table
 *         	作用:指定实体类和表之间的对应关系。
 *         	属性:
 *         		name:指定数据库表的名称
 *         @Id
 *         	作用:指定当前字段是主键。
 *         @GeneratedValue
 *         	作用:指定主键的生成方式。。
 *         	属性:
 *         		strategy :指定主键生成策略。
 *         @Column
 *         	作用:指定实体类属性和数据库表之间的对应关系
 *         	属性:
 *         		name:指定数据库表的列名称。
 *         		unique:是否唯一
 *         		nullable:是否可以为空
 *         		inserttable:是否可以插入
 *         		updateable:是否可以更新
 *         		columnDefinition: 定义建表时创建此列的DDL
 *         		secondaryTable: 从表名。如果此列不建在主表上(默认建在主表),该属性定义该列所在从表的名字搭建开发环境[重点]
 *
 * 客户实体类
 *      配置映射关系
 *          实体类和表映射
 *          实体类属性和表字段映射
 */
@Entity
@Table(name = "cst_customer")
public class Customer implements Serializable {
    /**
     * 声明主键配置
     */
    @Id
    /**
     * 配置主键的生成策略
     */
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    /**
     * 指定实体类属性和数据库表之间的对应关系
     */
    @Column(name ="cust_id")
    private Long custId;//客户主键
    @Column(name = "cust_name")
    private String custName;//客户名称
    @Column(name ="cust_source" )
    private String custSource;//客户来源
    @Column(name = "cust_industry")
    private String custIndustry;//客户行业
    @Column(name ="cust_level")
    private String custLevel;//客户级别
    @Column(name ="cust_address")
    private String custAddress;//客户地址
    @Column(name = "cust_phone")
    private String custPhone;//客户电话

    public Long getCustId() {
        return custId;
    }

    public void setCustId(Long custId) {
        this.custId = custId;
    }

    public String getCustName() {
        return custName;
    }

    public void setCustName(String custName) {
        this.custName = custName;
    }

    public String getCustSource() {
        return custSource;
    }

    public void setCustSource(String custSource) {
        this.custSource = custSource;
    }

    public String getCustIndustry() {
        return custIndustry;
    }

    public void setCustIndustry(String custIndustry) {
        this.custIndustry = custIndustry;
    }

    public String getCustLevel() {
        return custLevel;
    }

    public void setCustLevel(String custLevel) {
        this.custLevel = custLevel;
    }

    public String getCustAddress() {
        return custAddress;
    }

    public void setCustAddress(String custAddress) {
        this.custAddress = custAddress;
    }

    public String getCustPhone() {
        return custPhone;
    }

    public void setCustPhone(String custPhone) {
        this.custPhone = custPhone;
    }

    @Override
    public String toString() {
        return "Customer{" +
                "custId=" + custId +
                ", custName='" + custName + '\'' +
                ", custSource='" + custSource + '\'' +
                ", custIndustry='" + custIndustry + '\'' +
                ", custLevel='" + custLevel + '\'' +
                ", custAddress='" + custAddress + '\'' +
                ", custPhone='" + custPhone + '\'' +
                '}';
    }
}

  





package com.ytkj.dao; import com.ytkj.entity.Customer; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.data.jpa.repository.JpaSpecificationExecutor; import org.springframework.data.jpa.repository.Modifying; import org.springframework.data.jpa.repository.Query; import java.util.List; /** * JpaRepository<实体类类型,主键类型>:用来完成基本CRUD操作 * JpaSpecificationExecutor<实体类类型>:用于复杂查询(分页等查询操作) */ public interface CustomerDao2 extends JpaRepository<Customer,Long>, JpaSpecificationExecutor<Customer> { /** * 使用sql查询 * nativeQuery = true:使用sql查询 * nativeQuery = false:使用jpql查询,默认就是false */ @Query(value = "select * from cst_customer",nativeQuery = true) List<Customer> findAll(); /** * 使用sql条件查询 * 占位符 * 方法参数顺序尽量和占位符位置一样 * nativeQuery = true:使用sql查询 * nativeQuery = false:使用jpql查询,默认就是false */ @Query(value = "select * from cst_customer where cust_name=? ",nativeQuery = true) Customer findByName(String name); }

  

import com.ytkj.dao.CustomerDao2;
import com.ytkj.entity.Customer;
import jdk.nashorn.internal.parser.Lexer;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;

@RunWith(SpringJUnit4ClassRunner.class)//声明spring提供的单元测试环境
@ContextConfiguration(locations = "classpath:applicationContext.xml")//指定spring容器的配置信息
public class SpringdatajpaSqlTest {

    @Autowired
    CustomerDao2 customerDao2;
    @Test
    public  void  findAll(){
        List<Customer> list = customerDao2.findAll();
        for (int i=0;i<list.size();i++){
            Customer customer = list.get(i);
            System.out.println(customer);
        }
    }

    @Test
    public void findByName(){
        Customer customer = customerDao2.findByName("中国人");
        System.out.println(customer);
    }
}

 

posted on 2019-12-08 01:01  西门夜说  阅读(7358)  评论(0编辑  收藏  举报