Bot 操作的后端 API 定义

backend/src/main/java/com/kob/backend/controller/user/bot/AddController.java

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+package com.kob.backend.controller.user.bot;
+
+import com.kob.backend.service.user.bot.AddService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Map;
+
+@RestController
+public class AddController {
+    @Autowired
+    private AddService addService;
+
+    @PostMapping("/user/bot/add/")
+    public Map<String,String> add(@RequestParam Map<String,String> data){
+        return addService.add(data);
+    }
+}

backend/src/main/java/com/kob/backend/controller/user/bot/GetListController.java

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+package com.kob.backend.controller.user.bot;
+
+import com.kob.backend.pojo.Bot;
+import com.kob.backend.service.user.bot.GetListService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+import java.util.Map;
+
+@RestController
+public class GetListController {
+    @Autowired
+    private GetListService getListService;
+
+    @GetMapping("/user/bot/getlist/")
+    public List<Bot> getList(){
+        return getListService.getList();
+    }
+}

backend/src/main/java/com/kob/backend/controller/user/bot/RemoveController.java

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+package com.kob.backend.controller.user.bot;
+
+import com.kob.backend.service.user.bot.RemoveService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Map;
+
+@RestController
+public class RemoveController {
+    @Autowired
+    private RemoveService removeService;
+
+    @PostMapping("/user/bot/remove/")
+    public Map<String,String> remove(@RequestParam Map<String,String> data){
+        return removeService.remove(data);
+    }
+}

backend/src/main/java/com/kob/backend/controller/user/bot/UpdateController.java

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+package com.kob.backend.controller.user.bot;
+
+import com.kob.backend.service.user.bot.UpdateService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Map;
+
+@RestController
+public class UpdateController {
+    @Autowired
+    private UpdateService updateService;
+
+    @PostMapping("/user/bot/update/")
+    public Map<String,String> update(@RequestParam Map<String,String> data){
+        return updateService.update(data);
+    }
+}

backend/src/main/java/com/kob/backend/mapper/BotMapper.java

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+package com.kob.backend.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.kob.backend.pojo.Bot;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface BotMapper extends BaseMapper<Bot> {
+}

backend/src/main/java/com/kob/backend/pojo/Bot.java

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+//用于将 Mysql 表 Bot 转换为 class
+package com.kob.backend.pojo;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Date;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class Bot {
+//    主键自增
+    @TableId(type = IdType.AUTO)
+    private Integer id;
+
+//    注意：在pojo中需要定义成userId，在queryWrapper中的名称仍然为user_id
+    private Integer userId;
+    private String title;
+    private String description;
+    private String content;
+    private Integer rating;
+//    pojo中定义日期格式的注解：@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    private Date createtime;
+
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    private Date modifytime;
+
+}

backend/src/main/java/com/kob/backend/service/impl/user/bot/AddServiceImpl.java

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+package com.kob.backend.service.impl.user.bot;
+
+import com.kob.backend.mapper.BotMapper;
+import com.kob.backend.pojo.Bot;
+import com.kob.backend.pojo.User;
+import com.kob.backend.service.impl.utils.UserDetailsImpl;
+import com.kob.backend.service.user.bot.AddService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Service;
+
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+@Service
+public class AddServiceImpl implements AddService {
+    //    使用 @Autowired 注入接口,调用 BotMapper 来修改数据库
+    @Autowired
+    private BotMapper botMapper;
+
+    @Override
+    public Map<String, String> add(Map<String, String> data) {
+//        取出 User
+        UsernamePasswordAuthenticationToken authenticationToken =
+                (UsernamePasswordAuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
+        UserDetailsImpl loginUser = (UserDetailsImpl) authenticationToken.getPrincipal();
+        User user = loginUser.getUser();
+
+        String title = data.get("title");
+        String description = data.get("description");
+        String content = data.get("content");
+
+        Map<String, String> map = new HashMap<>();
+
+        if (title == null || title.length() == 0) {
+            map.put("error_message", "标题不能为空");
+            return map;
+        }
+
+        if (title.length() > 100) {
+            map.put("error_message", "标题长度不能大于100");
+            return map;
+        }
+
+        if (description == null || description.length() == 0) {
+            // 提供默认描述信息
+            description = "这个用户很懒，什么也没留下~";
+        }
+
+        if (description != null && description.length() > 300) {
+            map.put("error_message", "描述信息长度不能大于300");
+            return map;
+        }
+
+        if (content == null || content.length() == 0) {
+            map.put("error_message", "代码不能为空");
+            return map;
+        }
+
+        if (content.length() > 10000) {
+            map.put("error_message", "代码长度不能超过一万");
+            return map;
+        }
+
+//        定义当前时间
+        Date now = new Date();
+//        定义一个新 Bot ;创建时间和修改时间开始应该一样
+        Bot bot = new Bot(null, user.getId(), title, description, content, 1500, now, now);
+
+//        将新建的 Bot 注入数据库中
+        botMapper.insert(bot);
+        map.put("error_message", "success");
+
+        return map;
+    }
+}

backend/src/main/java/com/kob/backend/service/impl/user/bot/GetListServiceImpl.java

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+package com.kob.backend.service.impl.user.bot;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.kob.backend.mapper.BotMapper;
+import com.kob.backend.pojo.Bot;
+import com.kob.backend.pojo.User;
+import com.kob.backend.service.impl.utils.UserDetailsImpl;
+import com.kob.backend.service.user.bot.GetListService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class GetListServiceImpl implements GetListService {
+    @Autowired
+    private BotMapper botMapper;
+
+    @Override
+    public List<Bot> getList() {
+        UsernamePasswordAuthenticationToken authenticationToken =
+                (UsernamePasswordAuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
+        UserDetailsImpl loginUser = (UserDetailsImpl) authenticationToken.getPrincipal();
+        User user = loginUser.getUser();
+
+        QueryWrapper<Bot> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("user_id",user.getId());
+
+        return botMapper.selectList(queryWrapper);
+    }
+}

backend/src/main/java/com/kob/backend/service/impl/user/bot/RemoveServiceImpl.java

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+package com.kob.backend.service.impl.user.bot;
+
+import com.kob.backend.mapper.BotMapper;
+import com.kob.backend.pojo.Bot;
+import com.kob.backend.pojo.User;
+import com.kob.backend.service.impl.utils.UserDetailsImpl;
+import com.kob.backend.service.user.bot.RemoveService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Service
+public class RemoveServiceImpl implements RemoveService {
+    @Autowired
+    private BotMapper botMapper;
+
+    @Override
+    public Map<String, String> remove(Map<String, String> data) {
+//        先取出当前用户信息
+        UsernamePasswordAuthenticationToken authenticationToken =
+                (UsernamePasswordAuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
+        UserDetailsImpl loginUser = (UserDetailsImpl) authenticationToken.getPrincipal();
+        User user = loginUser.getUser();
+
+//        从用户输入参数判断要删除的 bot id
+        int bot_id = Integer.parseInt(data.get("bot_id"));
+        Bot bot = botMapper.selectById(bot_id);
+
+//        定义返回值
+        Map<String, String> map = new HashMap<>();
+
+//        如果 bot 不存在
+        if (bot == null) {
+            map.put("error_message", "Bot 不存在或已被删除");
+            return map;
+        }
+
+//        如果 bot 的 user_id 不等于 User 的 id
+        if (!bot.getUserId().equals(user.getId())) {
+            map.put("error_message", "你无权删除别人的 bot");
+            return map;
+        }
+
+//        判断成功后进行删除
+        botMapper.deleteById(bot_id);
+        map.put("error_message", "success");
+        return map;
+    }
+}

backend/src/main/java/com/kob/backend/service/impl/user/bot/UpdateServiceImpl.java

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+package com.kob.backend.service.impl.user.bot;
+
+import com.kob.backend.mapper.BotMapper;
+import com.kob.backend.pojo.Bot;
+import com.kob.backend.pojo.User;
+import com.kob.backend.service.impl.utils.UserDetailsImpl;
+import com.kob.backend.service.user.bot.UpdateService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Service;
+
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+@Service
+public class UpdateServiceImpl implements UpdateService {
+
+    @Autowired
+    private BotMapper botMapper;
+    @Override
+    public Map<String, String> update(Map<String, String> data) {
+//        先获取当前用户,用于判断更新对象是否有权限
+        UsernamePasswordAuthenticationToken authenticationToken =
+                (UsernamePasswordAuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
+        UserDetailsImpl loginUser = (UserDetailsImpl) authenticationToken.getPrincipal();
+        User user = loginUser.getUser();
+
+        int bot_id = Integer.parseInt(data.get("bot_id"));
+
+        String title = data.get("title");
+        String description = data.get("description");
+        String content = data.get("content");
+
+        Map<String, String> map = new HashMap<>();
+
+        if (title == null || title.length() == 0) {
+            map.put("error_message", "标题不能为空");
+            return map;
+        }
+        if (title.length() > 100) {
+            map.put("error_message", "标题长度不能大于100");
+            return map;
+        }
+        if (description == null || description.length() == 0) {
+            // 提供默认描述信息
+            description = "这个用户很懒，什么也没留下~";
+        }
+        if (description != null && description.length() > 300) {
+            map.put("error_message", "描述信息长度不能大于300");
+            return map;
+        }
+        if (content == null || content.length() == 0) {
+            map.put("error_message", "代码不能为空");
+            return map;
+        }
+        if (content.length() > 10000) {
+            map.put("error_message", "代码长度不能超过一万");
+            return map;
+        }
+
+        Bot bot = botMapper.selectById(bot_id);
+
+        if(bot == null){
+            map.put("error_message","所查 bot 不存在或已被删除");
+            return map;
+        }
+
+        if(!bot.getUserId().equals(user.getId())){
+            map.put("error_message","你无权更改别人的 bot");
+            return map;
+        }
+
+        Date now = new Date();
+        Date createTime = bot.getCreatetime();
+        int rating = bot.getRating();
+
+        Bot newBot = new Bot(bot.getId(),user.getId(),title,description,content,rating,createTime,now);
+
+        botMapper.updateById(newBot);
+        map.put("error_message","success");
+        return map;
+    }
+}

backend/src/main/java/com/kob/backend/service/user/bot/AddService.java

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+package com.kob.backend.service.user.bot;
+
+import java.util.Map;
+
+public interface AddService {
+    public Map<String,String> add(Map<String,String> data);
+}

backend/src/main/java/com/kob/backend/service/user/bot/GetListService.java

@@ -0,0 +1,9 @@
+package com.kob.backend.service.user.bot;
+
+import com.kob.backend.pojo.Bot;
+
+import java.util.List;
+
+public interface GetListService {
+    List<Bot> getList();    // getList() 不需要传参数
+}

backend/src/main/java/com/kob/backend/service/user/bot/RemoveService.java

@@ -0,0 +1,6 @@
+package com.kob.backend.service.user.bot;
+
+import java.util.Map;
+public interface RemoveService {
+    public Map<String,String> remove(Map<String,String> data);
+}

backend/src/main/java/com/kob/backend/service/user/bot/UpdateService.java

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+package com.kob.backend.service.user.bot;
+
+import java.util.Map;
+
+public interface UpdateService {
+    Map<String,String> update(Map<String,String> data);
+}