在datagrip中使用mysql创建菜品表

添加category_id等字段

在web模块下配置实现category菜品管理模块接口

api-interface/itmk-base-parent/itmk-base-web/src/main/java/com/itmk/web/category/controller/SysCategoryController.java

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+package com.itmk.web.category.controller;
+
+
+import com.alibaba.druid.util.StringUtils;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.itmk.utils.ResultUtils;
+import com.itmk.utils.ResultVo;
+import com.itmk.web.category.entity.CategoryPageParm;
+import com.itmk.web.category.entity.SysCategory;
+import com.itmk.web.category.service.SysCategoryService;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/api/category")
+public class SysCategoryController {
+
+//    注入服务类
+    private SysCategoryService sysCategoryService;
+
+//    新增菜品
+    @PostMapping
+    public ResultVo addCategory(@RequestBody SysCategory sysCategory){
+        if(sysCategoryService.save(sysCategory)){
+            return ResultUtils.success("新增菜品成功！", sysCategory);
+        }
+        return ResultUtils.error("新增菜品失败！");
+    }
+
+//    编辑菜品
+    @PutMapping
+    public ResultVo editCategory(@RequestBody SysCategory sysCategory){
+        if(sysCategoryService.updateById(sysCategory)){
+            return ResultUtils.success("编辑菜品成功！", sysCategory);
+        }
+        return ResultUtils.error("编辑菜品失败！");
+    }
+
+//    删除菜品
+    @DeleteMapping("/{categoryId}")
+    public ResultVo deleteCategory(@PathVariable Long categoryId){
+        if(sysCategoryService.removeById(categoryId)){
+            return ResultUtils.success("删除菜品成功！");
+        }
+        return ResultUtils.error("删除菜品失败！");
+    }
+
+//    列表查询
+//    列表查询需要分页
+    @GetMapping("/list")
+    public ResultVo getList(CategoryPageParm parm) {
+        IPage<SysCategory> page = new Page<>(parm.getCurrentPage(), parm.getPageSize());
+        QueryWrapper<SysCategory> queryWrapper = new QueryWrapper<>();
+        queryWrapper.lambda().like(!StringUtils.isEmpty(parm.getCategoryName()), SysCategory::getCategoryName, parm.getCategoryName())
+                .orderByAsc(SysCategory::getOrderNum);
+        IPage<SysCategory> list = sysCategoryService.page(page, queryWrapper);
+        return ResultUtils.success("查询成功", list);
+    }
+
+}

api-interface/itmk-base-parent/itmk-base-web/src/main/java/com/itmk/web/category/entity/CategoryPageParm.java

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+package com.itmk.web.category.entity;
+
+
+import lombok.Data;
+
+@Data
+public class CategoryPageParm {
+    private Integer currentPage;//当前页
+    private Integer pageSize;//每页显示多少条
+    private String categoryName;
+}

api-interface/itmk-base-parent/itmk-base-web/src/main/java/com/itmk/web/category/entity/SysCategory.java

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+package com.itmk.web.category.entity;
+
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+@Data
+
+@TableName("sys_category")//表明该类实体类所关联的数据表库
+
+//创建一个实体类
+public class SysCategory {
+    @TableId(type = IdType.AUTO)  //表明这是一个主键，并且自动递增
+    private Long categoryId;
+    private String categoryName;
+    private Integer orderNum;
+}

api-interface/itmk-base-parent/itmk-base-web/src/main/java/com/itmk/web/category/mapper/SysCategoryMapper.java

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+package com.itmk.web.category.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.itmk.web.category.entity.SysCategory;
+
+public interface SysCategoryMapper extends BaseMapper<SysCategory> {
+}

api-interface/itmk-base-parent/itmk-base-web/src/main/java/com/itmk/web/category/service/SysCategoryService.java

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+package com.itmk.web.category.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.itmk.web.category.entity.SysCategory;
+
+public interface SysCategoryService extends IService<SysCategory> {
+}

api-interface/itmk-base-parent/itmk-base-web/src/main/java/com/itmk/web/category/service/impl/SysCategoryServiceImpl.java

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+package com.itmk.web.category.service.impl;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.itmk.web.category.entity.SysCategory;
+import com.itmk.web.category.mapper.SysCategoryMapper;
+import com.itmk.web.category.service.SysCategoryService;
+import org.springframework.stereotype.Service;
+
+@Service
+public class SysCategoryServiceImpl extends ServiceImpl<SysCategoryMapper, SysCategory> implements SysCategoryService {
+}

api-interface/itmk-base-parent/itmk-base-web/src/main/resources/mapper/SysCategoryMapper.xml

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+<!--xml接口映射文件-->
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="com.itmk.web.category.mapper.SysCategoryMapper">
+</mapper>