【第8章】SpringBoot实战篇之文章分类(上)

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前言

从这开始进入文章相关的接口开发，本章主要介绍定义文章分类接口和新增文章分类

建表语句和测试用例，在SpringBoot专栏首页，此处只涉及后端代码。

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一、后端代码

1. CategoryController

package org.example.springboot3.bigevent.controller;import org.example.springboot3.bigevent.entity.Category;
import org.example.springboot3.bigevent.entity.Result;
import org.example.springboot3.bigevent.service.CategoryService;
import org.example.springboot3.bigevent.utils.ThreadLocalUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import java.util.Map;/*** Create by zjg on 2024/5/26*/
@RestController
public class CategoryController {@AutowiredCategoryService categoryService;@PostMapping("/category")public Result add(@RequestBody @Validated Category category){Map<String, Object> claims = ThreadLocalUtil.get();Integer userId = (Integer) claims.get("userId");category.setCreateUser(userId);int i = categoryService.add(category);if(i!=1){return Result.error("新增文章分类失败,请稍后重试!");}return Result.success("新增文章分类成功");}
}

2. service

package org.example.springboot3.bigevent.service;import org.example.springboot3.bigevent.entity.Category;/*** Create by zjg on 2024/5/26*/
public interface CategoryService {public int add(Category category);
}

package org.example.springboot3.bigevent.service;import org.example.springboot3.bigevent.entity.Category;
import org.example.springboot3.bigevent.mapper.CategoryMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.time.LocalDateTime;/*** Create by zjg on 2024/5/26*/
@Service
public class CategoryServiceImpl implements CategoryService{@AutowiredCategoryMapper categoryMapper;@Overridepublic int add(Category category) {category.setCreateTime(LocalDateTime.now());category.setUpdateTime(LocalDateTime.now());return categoryMapper.insert(category);}
}

3. CategoryMapper

package org.example.springboot3.bigevent.mapper;import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;
import org.example.springboot3.bigevent.entity.Category;/*** Create by zjg on 2024/5/26*/
@Mapper
public interface CategoryMapper extends BaseMapper<Category> {
}

4. Category

package org.example.springboot3.bigevent.entity;import jakarta.validation.constraints.NotEmpty;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
import java.time.LocalDateTime;@Getter
@Setter
@ToString
public class Category {@TableId(type= IdType.AUTO)private Integer id;//主键ID@NotEmpty(message = "分类名称不能为空")private String categoryName;//分类名称@NotEmpty(message = "分类别名不能为空")private String categoryAlias;//分类别名private Integer createUser;//创建人IDprivate LocalDateTime createTime;//创建时间private LocalDateTime updateTime;//更新时间
}

二、测试

1. 失败(校验)

2.正常

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总结

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