开发记录（第十七天）

第十七天：
今天成功开发了B4表格的前端界面，并与后端DAO层实现了交互。
进行了集成测试，验证了整个B4表格功能的正确性和稳定性。测试结果表明，所有功能均按预期工作，无异常或错误。
接下来，将把B4表格功能集成到整个项目中，并进行最后的系统测试。同时，将整理相关文档，以便后续维护和扩展。
// B4TableService.java
@Service
public class B4TableService {
@Autowired
private B4TableDAO b4TableDAO;

public B4TableRecord createRecord(B4TableRecord record) {
    b4TableDAO.insertRecord(record);
    return record;
}

public B4TableRecord getRecordById(Long id) {
    return b4TableDAO.queryRecordById(id);
}

public B4TableRecord updateRecord(B4TableRecord record) {
    b4TableDAO.updateRecord(record);
    return record;
}

public void deleteRecordById(Long id) {
    b4TableDAO.deleteRecordById(id);
}

// 其他服务方法...

}

// B4TableController.java
@RestController
@RequestMapping("/api/b4table")
public class B4TableController {
@Autowired
private B4TableService b4TableService;

@PostMapping("/create")
public ResponseEntity<B4TableRecord> createRecord(@RequestBody B4TableRecord record) {
    B4TableRecord createdRecord = b4TableService.createRecord(record);
    return new ResponseEntity<>(createdRecord, HttpStatus.CREATED);
}

@GetMapping("/{id}")
public ResponseEntity<B4TableRecord> getRecordById(@PathVariable Long id) {
    B4TableRecord record = b4TableService.getRecordById(id);
    if (record == null) {
        return new ResponseEntity<>(HttpStatus.NOT_FOUND);
    }
    return new ResponseEntity<>(record, HttpStatus.OK);
}

@PutMapping("/update")
public ResponseEntity<B4TableRecord> updateRecord(@RequestBody B4TableRecord record) {
    B4TableRecord updatedRecord = b4TableService.updateRecord(record);
    return new ResponseEntity<>(updatedRecord, HttpStatus.OK);
}

@DeleteMapping("/{id}")
public ResponseEntity<Void> deleteRecord