src/main/java/com/example/demo/DemoApplication.java

 package com.example.demo;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.ApplicationContext;
+import java.util.Arrays;
+import com.example.demo.entity.Item;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RestController;
+import org.apache.ibatis.session.SqlSessionFactory;
+import org.mybatis.spring.SqlSessionFactoryBean;
+import org.springframework.context.annotation.Bean;
+import javax.sql.DataSource;
+import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
+import org.springframework.core.io.Resource;
 
 @RestController
 @SpringBootApplication
-public class DemoApplication {
+// @EntityScan(basePackageClasses = {Item.class})
+public class DemoApplication{// implements CommandLineRunner{
+
+    // @Autowired
+    // private ApplicationContext appContext;
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoApplication.class, args);
+    }
 
-	public static void main(String[] args) {
-		SpringApplication.run(DemoApplication.class, args);
-	}
-	@GetMapping(value="/")
-	public String HelloWorld(){
-	   return "Hello World";
-	}
  
+    @Bean
+    public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception {
+        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
+        sessionFactory.setDataSource(dataSource);
+        
+        Resource[] res = new PathMatchingResourcePatternResolver().getResources("mappers/UserMapper.xml");
+        sessionFactory.setMapperLocations(res);
+        
+        return sessionFactory.getObject();
+    }
+
 }
+

src/main/java/com/example/demo/TestController.java

-package com.example.demo;
-
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-public class TestController {
-
-    @GetMapping(value = "/test")
-    public UserDto test(){
-
-        UserDto dto = new UserDto();
-        dto.setAge(17);
-        dto.setName("Jane");
-
-        return dto;
-
-    }
-    
-}
-

src/main/java/com/example/demo/constant/Role.java

+package com.example.demo.constant;
+
+public enum Role {
+
+    USER, ADMIN
+    
+}

src/main/java/com/example/demo/controller/MemberController.java

+package com.example.demo.controller;
+
+import com.example.demo.service.MemberService;
+import com.example.demo.entity.Member;
+import com.example.demo.dto.MemberDto;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.repository.query.Param;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+public class MemberController {
+
+    @Autowired
+    MemberService memberService;
+
+    public Member createMember(){
+        MemberDto memberDto = new MemberDto();
+        memberDto.setEmail("test@email.com");
+        memberDto.setName("홍길동");
+        memberDto.setAddress("서울시 마포구 합정동");
+        memberDto.setPassword("1234");
+        return Member.createMember(memberDto);
+    }
+
+    @RequestMapping(value = "/membertest", method = RequestMethod.GET)
+    public void membertest(){
+
+        Member member = createMember();
+        Member savedMember = memberService.saveMember(member);
+
+        System.out.println(member);
+        System.out.println(savedMember);
+
+    }
+
+    @RequestMapping(value = "/makeMember", method = RequestMethod.POST)
+    public String makeMember(@RequestBody String param){
+
+        System.out.println(param);
+        return "OK";
+    }
+
+}

src/main/java/com/example/demo/controller/TestController.java

+package com.example.demo.controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+
+@RestController
+public class TestController{
+
+  @RequestMapping(value = "/productlist", method = RequestMethod.GET)
+  public String productList(){
+
+      JsonObject obj1 = new JsonObject();
+      obj1.addProperty("item_nm", "수제 햄버거");
+      obj1.addProperty("item_detail", "소고기 패티와 토마토가 들어 있는 햄버거");
+      obj1.addProperty("item_reg_date", "2022/04/22");
+      obj1.addProperty("item_price", "4000");
+
+      JsonObject obj2 = new JsonObject();
+      obj2.addProperty("item_nm", "카레라이스");
+      obj2.addProperty("item_detail", "매운 3분 카레라이스");
+      obj2.addProperty("item_reg_date", "2022/03/10");
+      obj2.addProperty("item_price", "8000");
+
+      JsonObject obj3 = new JsonObject();
+      obj3.addProperty("item_nm", "라면");
+      obj3.addProperty("item_detail", "소고기 라면");
+      obj3.addProperty("item_reg_date", "2021/09/10");
+      obj3.addProperty("item_price", "1500");
+
+      JsonArray infoArray = new JsonArray();
+      infoArray.add(obj1);
+      infoArray.add(obj2);
+      infoArray.add(obj3);
+
+      return infoArray.toString();
+  }
+
+
+
+}

src/main/java/com/example/demo/controller/UserController.java

+package com.example.demo.controller;
+
+import java.util.List;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.example.demo.dao.UserDAO;
+import com.example.demo.dto.UserDTO;
+
+@RestController
+@MapperScan(basePackages="com.example.demo.dao")//탐색할 패키시 설정
+public class UserController {
+    @Autowired
+    private UserDAO userDAO;//UserDAO bean을 자동으로 주입
+    
+    @RequestMapping("/users")
+    public List<UserDTO> users(@RequestParam(value="country", defaultValue = "")String country) throws Exception { //query String으로 country를 받도록 설정
+        final UserDTO param = new UserDTO(0, null, country);
+        final List<UserDTO> userList = userDAO.selectUsers(param);
+        return userList;
+    }
+
+}

src/main/java/com/example/demo/UserDto.java → src/main/java/com/example/demo/controller/UserDto.java

-package com.example.demo;
+package com.example.demo.controller;
 
 import lombok.Getter;
 import lombok.Setter;

src/main/java/com/example/demo/dao/UserDAO.java

+package com.example.demo.dao;
+
+import java.util.List;
+import com.example.demo.dto.UserDTO;
+
+public interface UserDAO {
+    List<UserDTO> selectUsers(UserDTO param) throws Exception;
+}
+

src/main/java/com/example/demo/dto/MemberDto.java

+package com.example.demo.dto;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class MemberDto {
+
+    private String name;
+    private String email;
+    private String password;
+    private String address;
+    
+}

src/main/java/com/example/demo/dto/UserDTO.java

+package com.example.demo.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+
+@AllArgsConstructor // 자동으로 모든 매개변수를 받는 생성자를 생성
+@Getter // Getter 생성
+@Setter // Setter 생성
+public class UserDTO {
+    private int seq;
+    private String name;
+    private String country;
+}

src/main/java/com/example/demo/entity/Member.java

+package com.example.demo.entity;
+import javax.persistence.*;
+import com.example.demo.dto.MemberDto;
+import com.example.demo.constant.Role;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+
+@Entity
+@Table(name="member")
+@Getter
+@Setter
+@ToString
+public class Member {
+
+    @Id
+    @Column(name="member_id")
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    private String name;
+
+    @Column(unique = true)
+    private String email;
+
+    private String password;
+
+    private String address;
+
+    @Enumerated(EnumType.STRING)
+    private Role role;
+
+    public static Member createMember(MemberDto memberDto){
+        Member member = new Member();
+        member.setName(memberDto.getName());
+        member.setEmail((memberDto.getEmail()));
+        member.setAddress((memberDto.getAddress()));
+        member.setPassword(memberDto.getPassword());
+        member.setRole(Role.USER);
+        return member;
+
+    }
+}
+

src/main/java/com/example/demo/repository/ItemRepository.java

@@ -11,5 +11,11 @@ import com.example.demo.entity.Item;
 
 // @NoRepositoryBean
 public interface ItemRepository extends JpaRepository<Item, Long>{
-    
+    List<Item> findByItemNm(String itemNm);
+    List<Item> findByItemNmOrItemDetail(String itemNm, String itemDetail);
+    List<Item> findByPriceLessThan(Integer price);
+    List<Item> findByPriceLessThanOrderByPriceDesc(Integer price);
+    @Query("select i from Item i where i.itemDetail like %:itemDetail% order by i.price desc")
+    List<Item> findByItemDetail(@Param("itemDetail") String itemDetail);
+
 }

src/main/java/com/example/demo/repository/MemberRepository.java

+package com.example.demo.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import com.example.demo.entity.*;
+
+public interface MemberRepository extends JpaRepository<Member, Long>{
+
+    Member findByEmail(String email);
+    
+}

src/main/java/com/example/demo/service/MemberService.java

+package com.example.demo.service;
+
+import com.example.demo.entity.Member;
+import com.example.demo.repository.MemberRepository;
+import lombok.RequiredArgsConstructor;
+
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+
+import javax.transaction.Transactional;
+
+@Service
+@Transactional
+@RequiredArgsConstructor
+public class MemberService {
+
+    private final MemberRepository memberRepository;
+
+    public Member saveMember(Member member){
+        validateDuplicatetMember(member);
+
+        return memberRepository.save(member);
+    }
+
+    
+    private boolean validateDuplicatetMember(Member member){
+        
+            Member findMember = memberRepository.findByEmail(member.getEmail());
+            if(findMember != null){
+                System.out.println("이미 가입된 회원입니다.");
+                return false;
+            }
+    
+            return true;
+     
+    }
+
+}

src/main/resources/mappers/UserMapper.xml

+<?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.dao.UserDAO"><!--namespace를 통해 UserDAO와 연결합니다. -->
+        
+  <select id="selectUsers" parameterType="com.example.demo.dto.UserDTO"
+resultType="com.example.demo.dto.UserDTO">
+    SELECT `seq`, `name`, `country`  FROM lab03
+    <if test='country != null and country != ""'>
+        WHERE country = #{country}
+    </if>
+  </select>
+
+</mapper>

src/main/resources/static/index.html

+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Insert title here</title>
+
+  <link rel="stylesheet" href="/webjars/bootstrap/5.1.3/css/bootstrap.min.css">
+  <script src="/webjars/jquery/3.6.0/jquery.min.js"></script>
+  <script src="/webjars/popper.js/2.9.3/umd/popper.min.js"></script>
+  <script src="/webjars/bootstrap/5.1.3/js/bootstrap.min.js"></script>
+</head>
+
+<body>
+<div class="container">
+  <table class="table table-hover">
+    <thead class="thead-dark">
+    <tr>
+      <th>codeId</th>
+      <th>code</th>
+      <th>codeNm</th>
+      <th>codeDc</th>
+    </tr>
+    </thead>
+    <tbody>
+    <tr>
+      <td>COM001</td>
+      <td>REG01</td>
+      <td>단일 게시판 이용 등록</td>
+      <td>단일 게시판 이용 등록</td>
+    </tr>
+    <tr>
+      <td>COM001</td>
+      <td>REG02</td>
+      <td>커뮤니티 등록/td>
+      <td>커뮤니티 등록</td>
+    </tr>
+    </tbody>
+  </table>
+</div>
+</body>
+</html>

src/main/resources/static/product.html

+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Product</title>
+    <link rel="stylesheet" href="/webjars/bootstrap/5.1.3/css/bootstrap.min.css">
+    <script src="/webjars/jquery/3.6.0/jquery.min.js"></script>
+    <script src="/webjars/popper.js/2.9.3/umd/popper.min.js"></script>
+    <script src="/webjars/bootstrap/5.1.3/js/bootstrap.min.js"></script>
+    <script>
+        $(document).ready(function(){
+          $("button").click(function(){
+
+            $.ajax({
+
+              type: 'GET',
+              url: '/productlist',
+              success: function(data){
+                var array = JSON.parse(data);
+                for(i=0; i < array.length; i++){
+                    var obj = array[i];
+                    html = '';
+                    html += '<tr>';
+                    html += '<td>' + obj.item_nm + '</td>'
+                    html += '<td>' + obj.item_detail + '</td>'
+                    html += '<td>' + obj.item_reg_date + '</td>'
+                    html += '<td>' + obj.item_price + '</td>'
+                    html += '</tr>';
+                    $("#tableBody").append(html);
+                }
+
+              }
+
+            });
+
+
+          });
+        });
+    </script>
+
+</head>
+<body>
+<h1>상품 데이터 목록 출력</h1>
+<button>조회</button>
+<table class="table table-hover">
+    <thead class="thead-dark">
+        <tr>
+            <th>상품이름</th>
+            <th>상품상세설명</th>
+            <th>상품등록일</th>
+            <th>상품가격</th>
+        </tr>
+    </thead>
+    <tbody id="tableBody">
+    </tbody>
+</table>
+</body>
+</html>

src/test/java/com/example/demo/repository/ItemRepositoryTest.java

@@ -5,6 +5,8 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.TestPropertySource;
 import com.example.demo.entity.Item;
+import com.example.demo.entity.QItem;
+
 //import com.example.demo.entity.QItem;
 import org.junit.jupiter.api.DisplayName;
 import java.time.LocalDateTime;
@@ -23,23 +25,95 @@ import javax.persistence.PersistenceContext;
 @RunWith( SpringJUnit4ClassRunner.class )
 public class ItemRepositoryTest {
 
- @Autowired
- ItemRepository itemRepository;
-
- @Test
- @DisplayName("상품 저장 테스트")
- public void createItemTest(){
- Item item = new Item();
- item.setItemNm("테스트 상품");
- item.setPrice(100000);
- item.setItemDetail("테스트 상품 상세 설명");
- item.setStockNumber(100);
- item.setRegTime(LocalDateTime.now());
- item.setUpdateTime(LocalDateTime.now());
- 
- Item savedItem = itemRepository.save(item);
- System.out.println(savedItem.toString());
-}
+    @Autowired
+    ItemRepository itemRepository;
+
+    @PersistenceContext
+        EntityManager em;
+
+    public void createItemList(){
+
+        for(int i=1; i <=10; i++){
+            Item item = new Item();
+            item.setItemNm(("테스트 상품") + i);
+            item.setPrice(10000 + i);
+            item.setItemDetail("테스트 상품 상세 설명" + i);
+            item.setItemSellStatus(ItemSellStatus.SELL);
+            item.setStockNumber(100);
+            item.setRegTime(LocalDateTime.now());
+            item.setUpdateTime(LocalDateTime.now());
+            Item savedItem = itemRepository.save(item);
+        }
+    }
+
+        @Test
+        @DisplayName("상품명 조회 테스트")
+        public void findByItemNmTest(){
+            this.createItemList();
+            List<Item> itemList = itemRepository.findByItemNm("테스트 상품1");
+            for(Item item : itemList){
+                System.out.println(item.toString());
+            }
+
+        }
+
+        @Test
+        @DisplayName("상품명, 상품상세 설명 OR 테스트")
+        public void findByItemNmOrItemDetailTest(){
+            this.createItemList();
+            List<Item> itemList = itemRepository.findByItemNmOrItemDetail("테스트 상품1", "테스트 상품 상세 설명5");
+            for(Item item : itemList){
+                System.out.println(item.toString());
+            }
+
+        }
+
+        @Test
+        @DisplayName("가격 LessThan 테스트")
+        public void findByPriceLessThanTest(){
+            this.createItemList();
+            List<Item> itemList = itemRepository.findByPriceLessThan(10005);
+            for(Item item: itemList){
+                System.out.println(item.toString());
+            }
+        }
+
+        @Test
+        @DisplayName("가격 내람차순 조회 테스트")
+        public void findByPriceLessThanOrderByPriceDesc(){
+            this.createItemList();
+            List<Item> itemList =  itemRepository.findByPriceLessThanOrderByPriceDesc(10005);
+            for(Item item: itemList){
+                System.out.println(item.toString());
+            }
+        }
+
+        @Test
+        @DisplayName("@Query를 이용한 상품 조회 테스트")
+        public void findByItemDetailTest(){
+            this.createItemList();
+            List<Item> itemList = itemRepository.findByItemDetail("테스트 상품 상세 설명");
+            for(Item item : itemList){
+                System.out.println(item.toString());
+            }
+        }
+
+        @Test
+        @DisplayName("Querydsl 조회테스트1")
+        public void queryDslTest(){
+            this.createItemList();
+            JPAQueryFactory queryFactory = new JPAQueryFactory(em);
+            QItem qItem = QItem.item;
+            JPAQuery<Item> query = queryFactory.selectFrom(qItem)
+                    .where(qItem.itemSellStatus.eq(ItemSellStatus.SELL))
+                    .where(qItem.itemDetail.like("%" + "테스트 상품 상세 설명" + "%"))
+                    .orderBy(qItem.price.desc());
+
+            List<Item> itemList = query.fetch();
 
+            for(Item item : itemList){
+                System.out.println(item.toString());
+            }
+        }
 
 }
\ No newline at end of file