新增文章分类（2024-3-20）

//CategoryController
package com.di.bigevent.controller;

import com.di.bigevent.pojo.Category;
import com.di.bigevent.pojo.Result;
import com.di.bigevent.service.CategoryService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/category")
public class CategoryController {

    @Autowired
    private CategoryService categoryService;

    @PostMapping
    public Result add(@RequestBody Category category){

        categoryService.add(category);
        return Result.success();
    }

}

//CategoryService
package com.di.bigevent.service;

import com.di.bigevent.pojo.Category;

public interface CategoryService {
    void add(Category category);
}

//CategoryServiceImpl
package com.di.bigevent.service.impl;

import com.di.bigevent.mapper.CategoryMapper;
import com.di.bigevent.pojo.Category;
import com.di.bigevent.service.CategoryService;
import com.di.bigevent.utils.ThreadLocalUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.Map;

@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;

    @Override
    public void add(Category category) {

        category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());

        Map<String,Object> map = ThreadLocalUtil.get();
        Integer userId = (Integer) map.get("id");
        category.setCreateUser(userId);
        categoryMapper.add(category);
    }
}

//CategoryMapper
package com.di.bigevent.mapper;

import com.di.bigevent.pojo.Category;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface CategoryMapper {
    @Insert("INSERT INTO category(category_name,category_alias,create_user,create_time,update_time)" +
            "values(#{categoryName},#{categoryAlias},#{createUser},#{createTime},#{updateTime})")
    void add(Category category);
}