springboot +spring jpa 入门

入门demo，简述使用springJPA 的步骤
1、引入jpa; compile “org.springframework.boot:spring-boot-starter-data-jpa”
2、配置文件application.properties

#服务器访问端口
server.port=8089
# 数据库基本配置
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/yszd
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

spring.jpa.database=MYSQL
# 显示后台处理的SQL语句
spring.jpa.show-sql=true
spring.jackson.serialization.indent_output=true
# 自动检查实体和数据库表是否一致，如果不一致则会进行更新数据库表
spring.jpa.hibernate.ddl-auto=update

3、modal 层

@TypeChecked
@CompileStatic
@Entity
@Table(name = "t_product")
class TProduct implements Serializable{

    @Id
    @Column(name="id")
    Integer id

    @Column(name="product_no")
    String productNo

    @Column(name="product_name")
    String productName

    @Column(name="asset_type")
    Integer assetType

    @Column(name="finance_money")
    BigDecimal financeMoney

    @Column(name="period_count")
    Integer periodCount //周期

    @Column(name="rate")
    BigDecimal rate //利率

    @Column(name="money_back_type")
    Integer moneyBackType //还款方式

    @Column(name="risk_level")
    Integer riskLevel //风险等级
}

4、dao 层


/**
 * Created by yszd2017 on 2018/3/27.
 */
interface ProductRepository extends JpaRepository<TProduct,Integer>{

    TProduct findByProductNo(String productNo)

    @Query("select s from com.yszd.core.domain.TProduct s where  s.productName like %:name% ")
    List<TProduct>findListLikeName(@Param(value = "name") String name)
}

5、controller 层

package com.yszd.api

import com.yszd.core.dao.ProductRepository
import com.yszd.core.domain.TProduct
import groovy.transform.CompileStatic
import groovy.transform.TypeChecked
import io.swagger.annotations.Api
import io.swagger.annotations.ApiOperation
import io.swagger.annotations.ApiParam
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.data.domain.Page
import org.springframework.data.domain.PageRequest
import org.springframework.http.MediaType
import org.springframework.web.bind.annotation.GetMapping
import org.springframework.web.bind.annotation.RequestMapping
import org.springframework.web.bind.annotation.RequestParam
import org.springframework.web.bind.annotation.RestController

/**
 * Created by yszd2017 on 2018/3/27.
 * 接口测试
 */
@RestController
@RequestMapping(value = "/api/", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@TypeChecked
@CompileStatic
@Api(value = "测试接口", description = "测试接口")
class TestApi {

    @GetMapping("test1")
    test1() {
        [resCode: "0000"]
    }

    @Autowired
    private ProductRepository productRepository

    @GetMapping("getPageList")
    @ApiOperation(value = "分页查询列表", notes = "分页查询列表")
    getProductPageList(
            @ApiParam(required = true, name = "page", value = "查询页数") @RequestParam(value = "page") Integer page,
            @ApiParam(required = true, name = "pageSize", value = "每页数量") @RequestParam(value = "pageSize") Integer pageSize) {
        page = page ?: 1
        pageSize = pageSize ?: 10
        Page<TProduct> all = productRepository.findAll(new PageRequest(page <= 0 ? 1 : page - 1, pageSize))
        return all
    }


    @GetMapping("getProductByProductNo")
    @ApiOperation(value = "根据产品编号查询", notes = "根据产品编号查询")
    getProductByProductNo(
            @ApiParam(required = true, name = "productNo", value = "产品编号") @RequestParam(value = "productNo") String productNo) {
        productRepository.findByProductNo(productNo)
    }

    @GetMapping("getListLikeName")
    @ApiOperation(value = "根据产品名称模糊匹配查询", notes = "根据产品名称模糊匹配查询")
    getListLikeName(
            @ApiParam(required = true, name = "productName", value = "产品名称模糊匹配") @RequestParam(value = "productName") String productName) {
        productRepository.findListLikeName(productName)
    }


}

springboot +spring jpa 入门

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