1. Simple Jdbc

고인돌 프로젝트/[Step 4] Spring boot + Oracle

1. Simple Jdbc

고인돌개발자 2021. 8. 25. 10:30

참고, Step 1,2,3 진행 후 , DB 연결부분에 대한 학습입니다.

1. 패키지 구조, 디렉토리 구조 추가
- jdbc 패키지 아래로 controller, service, dao, vo 패키지 추가
- WEB-INF > view > list.jsp , list_id.jsp
- webapp > html > regist_jdbc.html

2. 소스코드 - jdbc 패키지 하위

src/main/java/com/model2/spring/jdbc/comm/DbConn.java

package com.model2.spring.jdbc.comm;

import java.sql.Connection;
import java.sql.DriverManager;

public class DbConn {

	
	String driver = "oracle.jdbc.driver.OracleDriver";
	String dbURL="jdbc:oracle:thin:@localhost:1521:xe";
	String user_id="scott";        
	String user_pw="tiger";
	String qry="";

	private Connection conn = null; // DB 에 connection 된 객체를 저장 
	
	public Connection getConn(){
		
		try{
			/* Driver Loading */
		    Class.forName(driver);
		    conn = DriverManager.getConnection(dbURL, user_id, user_pw);
		    
		    System.out.println("OK Connection");
			
		}catch (Exception e) {
			// TODO: handle exception
		}
		
		return conn;
	}
	
	
}

src/main/java/com/model2/spring/jdbc/controller/Con_People.java

package com.model2.spring.jdbc.controller;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;

import com.model2.spring.jdbc.service.Sv_People;
import com.model2.spring.jdbc.vo.Vo_People;

@Controller
@RequestMapping("/jdbc")
public class Con_People {
	
	Sv_People sv_People;
	
	/* 생성자를 통한 Di */
	@Autowired
	public Con_People(Sv_People sv_People) {
		this.sv_People = sv_People;
	}
	
	
	/* People 의 값을 전부 가져오는 메서드 */
	@RequestMapping("/PeopleList")
	public String getPeopleList(Model model) {
		
		System.out.println("Hi Spring - getPeopleList - Model2_Spring_War");	
		
		List<Vo_People> list = new ArrayList<>();
	    
		list = sv_People.doReadList();
	   	
		System.out.println("2. list size"+ list.size());	
		// 리스트의 값을 Attribute 를 통해 주고 받는다.
		//request.setAttribute("people", list);
		model.addAttribute("people",list);
		
		return "jdbc/list";
		//return "/WEB-INF/view/list.jsp";	
	}
	
	/* 특정 ID 값을 져오는 메서드 */
	@RequestMapping("/PeopleId")
	public String getPeopleId(HttpServletRequest request, Model model) {
		
		System.out.println("Hi Spring - getPeopleId - Model2_Spring_War");	
		
	    String strId = request.getParameter("id");		
		Vo_People vo_People = sv_People.doReadId(strId);
	    
		model.addAttribute("vo_people",vo_People);
		
		return "jdbc/list_id";
		//return "/WEB-INF/view/list.jsp";	
	}	
	
	/* ID 를 생성하는 메서드 */
	@RequestMapping("/PeopleCreate")
	public String getPeopleCreate(@ModelAttribute Vo_People vo_People) {
		
		System.out.println("Hi Spring - getPeopleCreate - Model2_Spring_War");	
		
		int int_result = sv_People.doCreate(vo_People);
	    
		return "redirect:/jdbc/PeopleList";
		//return "/WEB-INF/view/list.jsp";	
	}	

	
	/* ID 를 수정하는 메서드 */
	@RequestMapping("/PeopleUpdate")
	public String getPeopleUpdate(@ModelAttribute Vo_People vo_People) {
		
		System.out.println("Hi Spring - getPeopleUpdate - Model2_Spring_War");	
				
		int int_result = sv_People.doUpdate(vo_People);
		
		return "redirect:/jdbc/PeopleList";
		//return "/WEB-INF/view/list.jsp";	
	}
	
	/* ID 를 삭제하는 메서드 */
	@RequestMapping("/PeopleDelete")
	public String getPeopleDelete(HttpServletRequest request) {
		
		System.out.println("Hi Spring - getPeopleDelete - Model2_Spring_War");	
		
		String strId = request.getParameter("id");	
		int int_result = sv_People.doDelete(strId);
		
		return "redirect:/jdbc/PeopleList";
	}	
}

src/main/java/com/model2/spring/jdbc/dao/Dao_People.java

package com.model2.spring.jdbc.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Repository;

import com.model2.spring.jdbc.comm.DbConn;
import com.model2.spring.jdbc.vo.Vo_People;

import lombok.extern.slf4j.Slf4j;

@Repository
@Slf4j
public class Dao_People {
	
	Connection conn = null; // DB 에 connection 된 객체를 저장 
    PreparedStatement ps = null;  // connection 객체에 실행문을 던지는 역할(창구)
    ResultSet rs = null;     // select 결과값을 받아옮
    
	

	/* People 의 값을 전부 가져오는 메서드 */
	public List<Vo_People> doReadList() {
		
		String qry="";
		DbConn dbConn = new DbConn();	    
		conn = dbConn.getConn();
		
		List<Vo_People> list = new ArrayList<>();
		
		try{ 
		    /* Result Set , Print */	
			qry = " select id, name, age, to_char(reg_date,'yyyy.mm.dd') as dati " 
				+" from people "
				+ " order by id ";
			
			ps = conn.prepareStatement(qry);
			log.info(qry);
			rs = ps.executeQuery();
			
			while(rs.next()) {
				// Poeple 생성자를 이용하여 값을 입력 				
				Vo_People vo_People = new Vo_People(rs.getString("id"), rs.getString("name"), rs.getString("age"), rs.getString("dati"));
				list.add(vo_People);	
				
			}
			
			log.info("doReadList"+list.size());
			
		
	   }catch (Exception e) {
			System.out.println("Error =>"+e);			
		 }finally {
			 /* Close */ 
			try {
				if(rs != null) rs.close();
				if(ps != null) ps.close();
				if(conn != null) conn.close();			
			}catch (Exception e2) {			
			}
		}		
		
		return list;
	}

	/* 특정 ID 값을 져오는 메서드 */	
	public Vo_People doReadId(String id) {
		
		String qry="";
		DbConn dbConn = new DbConn();	    
		conn = dbConn.getConn();
	
		Vo_People vo_People=null;
		
		try{ 
		    /* Result Set , Print */	
			qry = " select id, name, age, to_char(reg_date,'yyyy.mm.dd') as dati " 
				+" from people "
				+" where id = ? "
				;
			
			ps = conn.prepareStatement(qry);
			ps.setString(1, id);
			rs = ps.executeQuery();
			log.info(qry);
			if(rs.next()) {
				// Poeple 생성자를 이용하여 값을 입력 				
				vo_People = new Vo_People(rs.getString("id"), rs.getString("name"), rs.getString("age"), rs.getString("dati"));
				
			}
			
			log.info("doReadId"+id);
			
		
	   }catch (Exception e) {
			System.out.println("Error =>"+e);			
		 }finally {
			 /* Close */ 
			try {
				if(rs != null) rs.close();
				if(ps != null) ps.close();
				if(conn != null) conn.close();			
			}catch (Exception e2) {			
			}
		}		
		
		return vo_People;
	}

	/* ID 를 생성하는 메서드 */
	public int doCreate(Vo_People vo_People) {
		
		String qry="";
		DbConn dbConn = new DbConn();	    
		conn = dbConn.getConn();
		
		int intI =0;
				
		 try{ 
			   
			 /* Result Set , Print */	
				qry = " Insert into people(id, name, age) "
					 +" values (? , ?, to_number(?))";
			     
				ps = conn.prepareStatement(qry);			
				ps.setString(1, vo_People.getId());
				ps.setString(2, vo_People.getName());
				ps.setString(3, vo_People.getAge());			
				log.info(qry);
				
				intI = ps.executeUpdate();
				
		   }catch (Exception e) {
			    intI = 1;
				System.out.println("Error =>"+e);			
			 }finally {
				 /* Close */ 
				try {
					if(rs != null) rs.close();
					if(ps != null) ps.close();
					if(conn != null) conn.close();			
				}catch (Exception e2) {			
				}
			}	
		 
		 log.info("doCreate"); 
		 
		return intI;
	}

	/* ID 를 수정하는 메서드 */
	public int doUpdate(Vo_People vo_People) {
		
		String qry="";
		DbConn dbConn = new DbConn();	    
		conn = dbConn.getConn();
		
		int intI =0;
				
		 try{ 
			   
			 /* Result Set , Print */	
				qry = " update people "
					 +" SET "
					 +" name =?, age =? "
					 +" WHERE id = ?"
					 ;					 
			     
				ps = conn.prepareStatement(qry);			
				ps.setString(1, vo_People.getName());
				ps.setString(2, vo_People.getAge());			
				ps.setString(3, vo_People.getId());
				
				log.info(qry);
				intI = ps.executeUpdate();
				
		   }catch (Exception e) {
			    intI = 1;
				System.out.println("Error =>"+e);			
			 }finally {
				 /* Close */ 
				try {
					if(rs != null) rs.close();
					if(ps != null) ps.close();
					if(conn != null) conn.close();			
				}catch (Exception e2) {			
				}
			}	
		 
		 log.info("doCreate"); 
		 
		return intI;
	}

	/* ID 를 삭제하는 메서드 */
	public int doDelete(String id) {
		
		String qry="";
		DbConn dbConn = new DbConn();	    
		conn = dbConn.getConn();
		
		int intI =0;		
				
		 try{ 
			   
			 /* Result Set , Print */	
				qry = " Delete from people "
					 +" WHERE id = ?"
					 ;					 
			     
				ps = conn.prepareStatement(qry);			
				ps.setString(1, id);
				log.info(qry);
				
				intI = ps.executeUpdate();
				
		   }catch (Exception e) {
			    intI = 1;
				System.out.println("Error =>"+e);			
			 }finally {
				 /* Close */ 
				try {
					if(rs != null) rs.close();
					if(ps != null) ps.close();
					if(conn != null) conn.close();			
				}catch (Exception e2) {			
				}
			}	
		 
		 log.info("doCreate"); 
		 
		return intI;
		
	}

}

/src/main/java/com/model2/spring/jdbc/service/Sv_IfPeople.java

package com.model2.spring.jdbc.service;

import java.util.List;

import com.model2.spring.jdbc.vo.Vo_People;

public interface Sv_IfPeople {
	
	// 전체 리스트 가져오기 
	public List<Vo_People> doReadList();
	
	// 특정 Id 리스트만 가져오기 
	public Vo_People doReadId(String id);
	
	// 데이타 로우 생성하기
	public int doCreate(Vo_People vo_People);
	
	// 특정 ID 정보 수정하기 
	public int doUpdate(Vo_People vo_People);
	
	// 특정 ID 정보 삭제하기 
	public int doDelete(String id);	

}

src/main/java/com/model2/spring/jdbc/service/Sv_People.java

package com.model2.spring.jdbc.service;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.model2.spring.jdbc.dao.Dao_People;
import com.model2.spring.jdbc.vo.Vo_People;

@Service
public class Sv_People implements Sv_IfPeople {
	
	Dao_People dao_People;
	
	@Autowired
	public Sv_People(Dao_People dao_People) {
		this.dao_People = dao_People;
	}

	/* People 의 값을 전부 가져오는 메서드 */
	@Override
	public List<Vo_People> doReadList() {
		
		List<Vo_People> list = dao_People.doReadList();
		
		return list;
	}

	/* 특정 ID 값을 져오는 메서드 */
	@Override
	public Vo_People doReadId(String id) {
		
	  Vo_People vo_People =null;	
	  
	  /* data 유효성 검증 */
	  if(id != null) {	
		vo_People = dao_People.doReadId(id);
	  }else {
		vo_People = null;  
	  }
	  
		return vo_People;
	}

	/* ID 를 생성하는 메서드 */
	@Override
	public int doCreate(Vo_People vo_People) {
		
		int intI = dao_People.doCreate(vo_People);
		
		return intI;
	}

	/* ID 를 수정하는 메서드 */
	@Override
	public int doUpdate(Vo_People vo_People) {
		
		int intI = dao_People.doUpdate(vo_People);
		
		return intI;
	}

	/* ID 를 삭제하는 메서드 */
	@Override
	public int doDelete(String id) {

		int intI = dao_People.doDelete(id);
		
		return intI;
	}

}

/src/main/java/com/model2/spring/jdbc/vo/Vo_People.java

package com.model2.spring.jdbc.vo;

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

/* People DB 에서 값을 받아 저장하고, View 에 던져주는 매개체 역할을 합니다. */

@Getter
@Setter
@ToString
@AllArgsConstructor // 멤버변수를 사용하는 생성자
public class Vo_People {
	
	private String id;
	private String name;
	private String age;
	private String date;

	}

3. 소스코드 - html, jsp

src/main/webapp/index_jdbc.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>

<h1> ■모델 2 Spring boot - jdbc </h1>

 <a href="./html/regist_jdbc.html">● 등록 </a>
 <p>
 <a href="/jdbc/PeopleList">● 조회 (삭제)</a>
   
</body>
</html>

/src/main/webapp/html/regist_jdbc.html

<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1> ■모델 2 Spring boot - jdbc </h1>

 <a href="/index_jdbc.html">● Home </a>
 <p>
  
 <form name="regist" action="/jdbc/PeopleCreate" method="post"> 
	<table style="width: 200px;">
		<tr>
			<td> 구분 </td> <td align="center">입력</td> 
		</tr>
		<tr>	
			<td> ID </td>   <td><input type="text" name="id" value="" />   </td> 
		</tr>
		<tr>
			<td> Name </td> <td><input type="text" name="name" value="" /></td> 
		</tr>
		<tr>	
			<td> Age </td>  <td><input type="text" name="age" value="" />  </td> 
		</tr> 
	</table>
	<p>
	<input type="submit"  value="전송" style="width:200px;"> 

 </form>
</body>
</html>

/src/main/webapp/WEB-INF/view/jdbc/list_id.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    
<%@ page import="java.util.*, com.model2.spring.jdbc.vo.*" %>


<%		
    Vo_People vo_People = (Vo_People)request.getAttribute("vo_people");	
%>


<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Select </title>
</head>
<body>


<h1> ■모델 2 , Spring boot - jdbc/list_id.jsp</h1>

 <a href="/index_jdbc.html">● Home </a>
 <p>

 <form name="regist" action="/jdbc/PeopleUpdate" method="post">  
 <table style="width: 400px;" border="0">
		<tr style="height: 40px">
			<td> ID </td>   <td><%=vo_People.getId() %><input type="hidden" name="id" value="<%=vo_People.getId() %>" />   </td> 
		</tr>
		<tr style="height: 40px">
			<td> Name </td> <td><input type="text" name="name" value="<%=vo_People.getName() %>" /></td> 
		</tr>
		<tr style="height: 40px">
			<td> Age </td>  <td><input type="text" name="age" value="<%=vo_People.getAge() %>" />  </td> 
		</tr>		
	</table>
<input type="submit"  value="수정" style="width:200px;"> 	
</form>
</body>
</html>

/src/main/webapp/WEB-INF/view/jdbc/list.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    
<%@ page import="java.util.*, com.model2.spring.jdbc.vo.*" %>


<%		
	List<Vo_People> list2 = (ArrayList<Vo_People>)request.getAttribute("people");	
%>


<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Select </title>
</head>
<body>


<h1> ■모델 2 , Spring boot - jdbc/list.jsp</h1>

 <a href="/index_jdbc.html">● Home </a>
 <p>
 
 <table style="width: 400px;" border="0">
		<tr style="height: 40px">
			<td>ID</td>
			<td align="center">이름</td>
			<td align="center">나이</td>
			<td align="center">등록일자</td>			
			<td> 삭제 </td>
		</tr>
		
	<%
			String strId;
	
	try{
			for(Vo_People p : list2){
				strId = p.getId();	
			%>	
				<tr style="height: 40px">
				<td><a href="/jdbc/PeopleId?id=<%=strId%>"><%=strId%></a></td>
				<td align="center"><%=p.getName()%></td>
				<td align="center"><%=p.getAge()%></td>
				<td align="center"><%=p.getDate()%></td>
				<td><a href="/jdbc/PeopleDelete?id=<%=strId%>">삭제 </a></td>
			</tr>	
			<%			
			}
				
	  }catch (Exception e) {
			System.out.println("Error =>"+e);			
		 }finally {			
		}	
		
	%>	
		
		
	</table>

</body>
</html>

Spring lib 를 사용하지 않고, 순수 jdbc 를 이용.

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고인돌 개발자

1. Simple Jdbc

1. 패키지 구조, 디렉토리 구조 추가
- jdbc 패키지 아래로 controller, service, dao, vo 패키지 추가
- WEB-INF > view > list.jsp , list_id.jsp
- webapp > html > regist_jdbc.html

2. 소스코드 - jdbc 패키지 하위

3. 소스코드 - html, jsp

'고인돌 프로젝트 > [Step 4] Spring boot + Oracle' 카테고리의 다른 글

'고인돌 프로젝트/[Step 4] Spring boot + Oracle'의 다른글

티스토리툴바

1. Simple Jdbc

1. 패키지 구조, 디렉토리 구조 추가 - jdbc 패키지 아래로 controller, service, dao, vo 패키지 추가 - WEB-INF > view > list.jsp , list_id.jsp - webapp > html > regist_jdbc.html

2. 소스코드 - jdbc 패키지 하위

3. 소스코드 - html, jsp

'고인돌 프로젝트 > [Step 4] Spring boot + Oracle' 카테고리의 다른 글

'고인돌 프로젝트/[Step 4] Spring boot + Oracle'의 다른글

관련글

티스토리툴바

1. 패키지 구조, 디렉토리 구조 추가
- jdbc 패키지 아래로 controller, service, dao, vo 패키지 추가
- WEB-INF > view > list.jsp , list_id.jsp
- webapp > html > regist_jdbc.html