@Data
public class FwjlVo {private Integer id;private String yhid;private String gnid;private String czsj;private String ip;private String content;
}

@Mapper
public interface FwjlDao {int add(FwjlVo fwjlVo);FwjlVo getFwjlById(int id);List<FwjlVo> getFwjlList();
}

@Service
public interface FwjlService {boolean add(FwjlVo fwjlVo);FwjlVo getFwjlById(int id);List<FwjlVo> getFwjlList();
}

@Component
public class FwjlServiceImpl implements FwjlService{@Resourceprivate FwjlDao fwjlDao;@Overridepublic boolean add(FwjlVo fwjlVo) {return fwjlDao.add(fwjlVo) > 0;}@Overridepublic FwjlVo getFwjlById(int id) {return fwjlDao.getFwjlById(id);}@Overridepublic List<FwjlVo> getFwjlList() {return fwjlDao.getFwjlList();}
}

#===============PostgreSQL config=====================
spring.datasource.url=jdbc:postgresql://127.0.0.1:5432/test
spring.datasource.username=test
spring.datasource.password=test
spring.datasource.driverClassName=org.postgresql.Driver#===============Mybatis config=====================
mybatis.mapper-locations=classpath:mapper/*Mapper.xml
mybatis.type-aliases-package=com.example.demo.xtxx

<?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.example.demo.xtxx.FwjlDao"><resultMap id="BaseResultMap" type="com.example.demo.xtxx.FwjlVo" ><id column="id" property="id" jdbcType="INTEGER" /><result column="yhid" property="yhid" jdbcType="VARCHAR" /><result column="gnid" property="gnid" jdbcType="VARCHAR" /><result column="czsj" property="czsj" jdbcType="VARCHAR" /><result column="ip" property="ip" jdbcType="VARCHAR" /><result column="content" property="content" jdbcType="VARCHAR" /></resultMap><insert id="add" parameterType="com.example.demo.xtxx.FwjlVo">INSERT  INTO xtxx_fwjl(yhid,gnid,ip,content)VALUES (#{yhid,jdbcType=VARCHAR},#{gnid,jdbcType=VARCHAR},#{ip,jdbcType=VARCHAR},#{content,jdbcType=VARCHAR})</insert><select id="getFwjlById" parameterType="java.lang.Integer"  resultMap="BaseResultMap">SELECT id,yhid,gnid,to_char(czsj, 'YYYY-MM-DD HH24:MI:SS') czsj,ip,content FROM xtxx_fwjl WHERE id=#{id,jdbcType=INTEGER}</select><select id="getFwjlList" resultMap="BaseResultMap">SELECT id,yhid,gnid,to_char(czsj, 'YYYY-MM-DD HH24:MI:SS') czsj,ip,content FROM xtxx_fwjl</select>
</mapper>

　　@AutowiredFwjlService fwjlService;@RequestMapping(value = "addFwjl",method = RequestMethod.POST)public String addFwjl(@RequestBody FwjlVo vo){boolean flag = fwjlService.add(vo);int no = 0;String msg = "保存失败";if(flag){no = 1;msg = "保存成功";}Map<String,Object> map = new HashMap<String,Object>();map.put("no", no);map.put("msg", msg);Gson gson = new Gson();return gson.toJson(map);}@RequestMapping(value = "getFwjl",method = RequestMethod.GET)public String getFwjl(@RequestParam(required = true) int id){FwjlVo fwjlVo = fwjlService.getFwjlById(id);Gson gson = new Gson();return gson.toJson(fwjlVo);}@RequestMapping(value = "getFwjlList",method = RequestMethod.GET)public String getFwjlList(){List<FwjlVo> list = fwjlService.getFwjlList();Gson gson = new Gson();return gson.toJson(list);}