新版

src/main/java/com/peanut/modules/book/controller/ShopProductLabelController.java

@@ -0,0 +1,28 @@
+package com.peanut.modules.book.controller;
+
+import com.peanut.common.utils.R;
+import com.peanut.modules.book.entity.ShopProductLabelEntity;
+import com.peanut.modules.book.service.ShopProductLabelService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("book/label")
+public class ShopProductLabelController {
+
+    @Autowired
+    private ShopProductLabelService shopProductLabelService;
+
+
+    @RequestMapping("/addLabel")
+    public R addLabel(@RequestParam String labelName){
+        ShopProductLabelEntity shopProductLabelEntity = new ShopProductLabelEntity();
+        shopProductLabelEntity.setLabelName(labelName);
+        shopProductLabelService.save(shopProductLabelEntity);
+        return R.ok();
+    }
+
+}

src/main/java/com/peanut/modules/book/dao/ShopProductLabelDao.java

@@ -0,0 +1,9 @@
+package com.peanut.modules.book.dao;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.peanut.modules.book.entity.ShopProductLabelEntity;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface ShopProductLabelDao extends BaseMapper<ShopProductLabelEntity> {
+}

src/main/java/com/peanut/modules/book/entity/ShopProductLabelEntity.java

@@ -0,0 +1,31 @@
+package com.peanut.modules.book.entity;
+
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableLogic;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+@TableName("shop_product_label")
+public class ShopProductLabelEntity {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     *
+     */
+    @TableId
+    private Integer splId;
+
+    private String labelName;
+
+    private Date ctime;
+
+
+    @TableField("del_flag")
+    @TableLogic
+    private  Integer delFlag;
+}

src/main/java/com/peanut/modules/book/service/ShopProductLabelService.java

@@ -0,0 +1,7 @@
+package com.peanut.modules.book.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.peanut.modules.book.entity.ShopProductLabelEntity;
+
+public interface ShopProductLabelService extends IService<ShopProductLabelEntity> {
+}

src/main/java/com/peanut/modules/book/service/impl/ShopProductLabelServiceImpl.java

@@ -0,0 +1,12 @@
+package com.peanut.modules.book.service.impl;
+
+import com.peanut.modules.book.dao.ShopProductLabelDao;
+import com.peanut.modules.book.entity.ShopProductLabelEntity;
+import com.peanut.modules.book.service.ShopProductLabelService;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import org.springframework.stereotype.Service;
+
+@Service("ShopProductLabelService")
+public class ShopProductLabelServiceImpl extends ServiceImpl<ShopProductLabelDao, ShopProductLabelEntity> implements ShopProductLabelService {
+
+}

src/main/resources/mapper/ShopProductLabelMapper.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.peanut.modules.book.dao.ShopProductLabelMapper">
+
+</mapper>

src/test/java/io/Test.java

@@ -6,7 +6,7 @@ public class Test {
     public void test01(){
         String a = "dsadasdasdas";
         String substring = a.substring(5, 1);
-        System.out.println(substring);
+        System.out.println(a);
     }
 
 }