Springboot整合MyBatis通过调用API查询MySQL数据库数据

package com.example.demo0508.controller; import com.example.demo0508.entity.TMsg; import com.example.demo0508.service.TMsgService; import com.google.gson.Gson; import org.apache.ibatis.annotations.Param; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import java.util.List; @RestController @RequestMapping("/msg") public class TMsgController { private final TMsgService tMsgService; public TMsgController(TMsgService tMsgService) { this.tMsgService = tMsgService; } @GetMapping("/getJson") // 通过Message获取id public String getJson(@Param("id") Integer id){ TMsg tMsg = tMsgService.findById(id); Gson gson = new Gson(); return gson.toJson(tMsg); } @GetMapping("/getAllJson") // 通过Message获取id public String getAllJson(){ List<TMsg> list = tMsgService.findTMsgAll(); Gson gson = new Gson(); return gson.toJson(list); } }