layui+SSM实现换病床申请具体实现代码

换病床申请功能的实现可以分为以下几个步骤：

1. 定义换病床申请表

CREATE TABLE `bed_exchange_application` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `patient_id` int(11) NOT NULL COMMENT '患者id',
  `old_bed_id` int(11) NOT NULL COMMENT '原病床id',
  `new_bed_id` int(11) NOT NULL COMMENT '新病床id',
  `reason` varchar(255) NOT NULL COMMENT '申请原因',
  `status` tinyint(1) NOT NULL DEFAULT '0' COMMENT '状态：0-待审核，1-审核通过，2-审核不通过',
  `create_time` datetime NOT NULL COMMENT '创建时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='换病床申请表';

2. 编写实体类 BedExchangeApplication.java

public class BedExchangeApplication {
    private Integer id;
    private Integer patientId;
    private Integer oldBedId;
    private Integer newBedId;
    private String reason;
    private Integer status;
    private Date createTime;
    // 省略 getter/setter 方法
}

3. 编写 DAO 接口 BedExchangeApplicationDao.java 和对应的 Mapper 文件 BedExchangeApplicationMapper.xml

BedExchangeApplicationDao.java

public interface BedExchangeApplicationDao {
    void insert(BedExchangeApplication application);
    void updateStatus(@Param("id") Integer id, @Param("status") Integer status);
    List<BedExchangeApplication> listByStatus(@Param("status") Integer status);
}

BedExchangeApplicationMapper.xml

<mapper namespace="com.example.dao.BedExchangeApplicationDao">
    <insert id="insert" useGeneratedKeys="true" keyProperty="id">
        INSERT INTO bed_exchange_application(patient_id, old_bed_id, new_bed_id, reason, status, create_time)
        VALUES(#{patientId}, #{oldBedId}, #{newBedId}, #{reason}, #{status}, #{createTime})
    </insert>

    <update id="updateStatus">
        UPDATE bed_exchange_application SET status = #{status} WHERE id = #{id}
    </update>

    <select id="listByStatus" resultType="com.example.entity.BedExchangeApplication">
        SELECT * FROM bed_exchange_application WHERE status = #{status} ORDER BY create_time DESC
    </select>
</mapper>

4. 编写 Service 接口和实现类 BedExchangeApplicationService.java 和 BedExchangeApplicationServiceImpl.java

BedExchangeApplicationService.java

public interface BedExchangeApplicationService {
    void submit(BedExchangeApplication application);
    void approve(Integer id);
    void reject(Integer id);
    List<BedExchangeApplication> listPendingApplications();
}

BedExchangeApplicationServiceImpl.java

@Service
public class BedExchangeApplicationServiceImpl implements BedExchangeApplicationService {
    @Autowired
    private BedExchangeApplicationDao bedExchangeApplicationDao;

    @Override
    public void submit(BedExchangeApplication application) {
        application.setStatus(0); // 设置为待审核状态
        application.setCreateTime(new Date());
        bedExchangeApplicationDao.insert(application);
    }

    @Override
    public void approve(Integer id) {
        bedExchangeApplicationDao.updateStatus(id, 1); // 审核通过，状态为1
    }

    @Override
    public void reject(Integer id) {
        bedExchangeApplicationDao.updateStatus(id, 2); // 审核不通过，状态为2
    }

    @Override
    public List<BedExchangeApplication> listPendingApplications() {
        return bedExchangeApplicationDao.listByStatus(0); // 查询所有待审核的申请
    }
}

5. 编写 Controller 类 BedExchangeController.java

@RestController
@RequestMapping("/bed_exchange")
public class BedExchangeController {
    @Autowired
    private BedExchangeApplicationService bedExchangeApplicationService;

    @PostMapping("/submit")
    public void submit(@RequestBody BedExchangeApplication application) {
        bedExchangeApplicationService.submit(application);
    }

    @PostMapping("/approve/{id}")
    public void approve(@PathVariable("id") Integer id) {
        bedExchangeApplicationService.approve(id);
    }

    @PostMapping("/reject/{id}")
    public void reject(@PathVariable("id") Integer id) {
        bedExchangeApplicationService.reject(id);
    }

    @GetMapping("/pending")
    public List<BedExchangeApplication> listPendingApplications() {
        return bedExchangeApplicationService.listPendingApplications();
    }
}

以上是基于 layui 和 SSM 框架实现换病床申请功能的详细代码实现。当用户提交换病床申请时，将数据插入到数据库中；当医生审核通过或不通过时，更新相应的状态；当用户查询待审核申请时，查询数据库获取所有状态为 0（待审核）的申请。