服务层的配置发布服务 taotao-manager-dao、taotao-manager-interface、taotao-manager-service

TestMapper.java

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package com.taotao.mapper;   /**  * 测试接口，查询当前的时间  */ public interface TestMapper {     public String queryNow(); }

 

TestMapper.xml

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<?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.taotao.mapper.TestMapper">     <select id="queryNow" resultType="string">         select NOW()     </select> </mapper>

　　

TestService.java

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package com.taotao.service;   /**  * 测试 接口 查询当前时间  */ public interface TestService {     //查询当前的时间     public String queryNow(); }

　　

 

TestServiceImpl.java

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package com.taotao.service.impl;   import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;   import com.taotao.mapper.TestMapper; import com.taotao.service.TestService;   @Service public class TestServiceImpl implements TestService {       @Autowired     private TestMapper mapper;           @Override     public String queryNow() {         //1.注入mapper         //2.调用mapper的方法 返回         return mapper.queryNow();     }   }