mybatis 怎么实现 insert

package com.ciy_test.business.adress;
import java.util.ArrayList;
import java.util.List;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import com.alibaba.fastjson.JSONObject;
import com.ciy_test.entity.Product;
import com.ciy_test.entity.Purcase;
import com.ciy_test.entity.WebResult;
import com.ciy_test.service.ProductService;
import com.ciy_test.service.PurcaseService;

/**

• 练习模块接口(练习使用)

• @author admin
  *
  */
  @Controller
  @RequestMapping("/business/test")
  @Api(tags = "练习模块")
  public class TestController {
  @Autowired
  
  private PurcaseService purcaseService ;

  @PostMapping("/getAddressDetail")
  @ResponseBody
  @ApiOperation(value="gg",notes="gg")
  @ApiImplicitParams({@ApiImplicitParam(name="id",value="id",paramType="query",required=false),
  @ApiImplicitParam(name="customerid",value="顾客号",paramType="query",required=false),
  @ApiImplicitParam(name="productid",value="商品号",paramType="query",required=false),
  @ApiImplicitParam(name="quantity",value="数量",paramType="query",required=false),

  })
  

  public WebResult getpurcaselist( @RequestParam(value="id",defaultValue="") Integer id,
  @RequestParam(value="customerid",defaultValue="") String customerid,
  @RequestParam(value="productid",defaultValue="") String productid ,
  @RequestParam(value="quantity",defaultValue="") Integer quantity )
  {
  try{
  // NyUserAddress nyUserAddressBean =nyUserAddressService.searchNyUseraddressByid(aid);
  Purcase bean =new Purcase();
  List list = new ArrayList<>();
  bean.setId(id);
  bean.setcustomerid(customerid);
  bean.setproductid(productid);
  bean.setquantity(quantity);
  list.add(bean);
  purcaseService.savepurcase(bean);
  JSONObject obj =new JSONObject();
  //obj.put("nyUserAddressBean",nyUserAddressBean);
  obj.put("purcase",list);
  return WebResult.success(obj);
  }
  catch(Exception e){
  e.printStackTrace();

    }
    return WebResult.error(null);
  

  }

建议去看看这篇，希望有帮助 https://www.jianshu.com/p/627b196f89ef

参考下：https://blog.csdn.net/weixin_34309435/article/details/87097032