目录

业务层

一、定义Message业务接口

二、定义Message业务实现类

Web层

一、获取分页消息列表

二、根据ID查询消息

三、把未读消息更新成已读消息

四、删除消息

---

业务层

一、定义Message业务接口

创建 MessageService.java 类 

public interface MessageService {
    public String insertMessage(MessageEntity entity);
    public List<HashMap> searchMessageByPage(int userId, long start, int length);
    public HashMap searchMessageById(String id);
    public String insertRef(MessageRefEntity entity);
    public long searchUnreadCount(int userId);
    public long searchLastCount(int userId);
    public long updateUnreadMessage(String id);
    public long deleteMessageRefById(String id);
    public long deleteUserMessageRef(int userId);
}

二、定义Message业务实现类

 

创建 MessageServiceImpl.java 类

@Service
public class MessageServiceImpl implements MessageService {
    @Autowired
    private MessageDao messageDao;

    @Autowired
    private MessageRefDao messageRefDao;

    @Override
    public String insertMessage(MessageEntity entity) {
        String id=messageDao.insert(entity);
        return id;
    }

    @Override
    public List<HashMap> searchMessageByPage(int userId, long start, int length) {
        List<HashMap> list=messageDao.searchMessageByPage(userId,start,length);
        return list;
    }

    @Override
    public HashMap searchMessageById(String id) {
        HashMap map=messageDao.searchMessageById(id);
        return map;
    }

    @Override
    public String insertRef(MessageRefEntity entity) {
        String id=messageRefDao.insert(entity);
        return id;
    }

    @Override
    public long searchUnreadCount(int userId) {
        long count=messageRefDao.searchUnreadCount(userId);
        return count;
    }

    @Override
    public long searchLastCount(int userId) {
        long count=messageRefDao.searchLastCount(userId);
        return count;
    }

    @Override
    public long updateUnreadMessage(String id) {
        long rows=messageRefDao.updateUnreadMessage(id);
        return rows;
    }

    @Override
    public long deleteMessageRefById(String id) {
        long rows=messageRefDao.deleteMessageRefById(id);
        return rows;
    }

    @Override
    public long deleteUserMessageRef(int userId) {
        long rows=messageRefDao.deleteUserMessageRef(userId);
        return rows;
    }
}

Web层

一、获取分页消息列表

创建 SearchMessageByPageForm.java 类 

@Data
@ApiModel
public class SearchMessageByPageForm {
    @NotNull
    @Min(1)
    private Integer page;
    @NotNull
    @Range(min = 1,max = 40)
    private Integer length;
}

创建 MessageController.java 类  

@RestController
@RequestMapping("/message")
@Api("消息模块网络接口")
public class MessageController {
    @Autowired
    private JwtUtil jwtUtil;

    @Autowired
    private MessageService messageService;

    @PostMapping("/searchMessageByPage")
    @ApiOperation("获取分页消息列表")
    public R searchMessageByPage(@Valid @RequestBody SearchMessageByPageForm form, @RequestHeader("token") String token) {
        int userId = jwtUtil.getUserId(token);
        int page = form.getPage();
        int length = form.getLength();
        long start = (page - 1) * length;
        List<HashMap> list = messageService.searchMessageByPage(userId, start, length);
        return R.ok().put("result", list);
    }
}

二、根据ID查询消息

创建 SearchMessageByIdForm.java 类

@Data
@ApiModel
public class SearchMessageByIdForm {
    @NotNull
    private String id;
}

在 MessageController.java 中编写Web方法 

……
    @PostMapping("/searchMessageById")
    @ApiOperation("根据ID查询消息")
    public R searchMessageById(@Valid @RequestBody SearchMessageByIdForm form) {
        HashMap map = messageService.searchMessageById(form.getId());
        return R.ok().put("result", map);
    }

三、把未读消息更新成已读消息

创建 UpdateUnreadMessageForm.java 类 

@Data
@ApiModel
public class UpdateUnreadMessageForm {
    @NotNull
    private String id;
}

在 MessageController.java 中编写Web方法

……    
    @PostMapping("/updateUnreadMessage")
    @ApiOperation("未读消息更新成已读消息")
    public R updateUnreadMessage(@Valid @RequestBody UpdateUnreadMessageForm form) {
        long rows = messageService.updateUnreadMessage(form.getId());
        return R.ok().put("result", rows == 1 ? true : false);
    }

四、删除消息

创建 DeleteMessageRefByIdForm.java 类

@Data
@ApiModel
public class DeleteMessageRefByIdForm {
    @NotNull
    private String id;
}

在 MessageController.java 中编写Web方法

……
    @PostMapping("/deleteMessageRefById")
    @ApiOperation("删除消息")
    public R deleteMessageRefById(@Valid @RequestBody DeleteMessageRefByIdForm form) {
        long rows = messageService.deleteMessageRefById(form.getId());
        return R.ok().put("result", rows == 1 ? true : false);
    }