写一个审批接口-Go服务器开发

下面是一个示例审批接口的设计，使用 Spring Boot 和 MyBatis 进行实现。假设我们需要一个简单的 RESTful API，用于提交审批请求并获取审批状态。

1. 数据模型

首先，我们定义一个简单的审批请求和响应的数据模型。

// ApprovalRequest.java
public class ApprovalRequest {
    private Long id;
    private String applicantName;
    private String status; // APPROVED, REJECTED, PENDING
    // getters and setters
}

2. Mapper 接口

接下来，定义一个 MyBatis 的 Mapper 接口，以进行数据库操作。

// ApprovalMapper.java
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

@Mapper
public interface ApprovalMapper {

    void insertApproval(ApprovalRequest request);

    ApprovalRequest getApprovalById(@Param("id") Long id);

    void updateApprovalStatus(@Param("id") Long id, @Param("status") String status);
}

3. 服务层

创建服务层来处理业务逻辑。

// ApprovalService.java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class ApprovalService {

    @Autowired
    private ApprovalMapper approvalMapper;

    public void submitApproval(ApprovalRequest request) {
        approvalMapper.insertApproval(request);
        // You can implement additional logic here if needed (e.g., notifications)
    }

    public ApprovalRequest getApproval(Long id) {
        return approvalMapper.getApprovalById(id);
    }

    public void updateStatus(Long id, String status) {
        approvalMapper.updateApprovalStatus(id, status);
        // Additional logic for handling state changes can go here (e.g., logging)
    }
}

4. 控制器

最后，创建控制器以暴露 RESTful API 接口。

// ApprovalController.java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api/approvals")
public class ApprovalController {

    @Autowired
    private ApprovalService approvalService;

    @PostMapping("/")
    public void submitApproval(@RequestBody ApprovalRequest request) {
        approvalService.submitApproval(request);
    }

    @GetMapping("/{id}")
    public ApprovalRequest getApproval(@PathVariable Long id) {
        return approvalService.getApproval(id);
    }

    @PutMapping("/{id}/status")
    public void updateStatus(@PathVariable Long id, @RequestParam String status) {
        approvalService.updateStatus(id, status);
    }
}

5. 配置和依赖项

确保在 pom.xml 中添加相关依赖，例如 Spring Boot Starter 和 MyBatis Spring Boot Starter：

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
   <groupId>org.mybatis.spring.boot</groupId>
   <artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
   <scope>runtime</scope>
</dependency>