零基础开始学习鸿蒙开发-登录界面获取参数的值，并且发送参数请求后台登录，经过后台校验即可登录成功

package com.example.harmonyreq.service.impl; import com.example.harmonyreq.common.Result; import com.example.harmonyreq.mapper.UserMapper; import com.example.harmonyreq.model.User; import com.example.harmonyreq.service.IUserService; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.HashMap; import java.util.Map; @Service public class UserServiceImpl implements IUserService { private Logger logger = LoggerFactory.getLogger(UserServiceImpl.class); @Autowired private UserMapper userMapper; @Override public Result login(Map<String,Object>params) { Result res = new Result(); try { User user = userMapper.queryByUnamePwd(params); if (null!=user){ res.success(user,"成功！"); logger.info("登录成功！"); }else { res.fail(); } }catch (Exception e){ logger.error("登录失败！{}",e.getMessage()); res.fail(); return res; } return res; } }