* 쿼리에서 문자열 더하고 넣는 방법.
preparestatement에서 like 구문 사용하는 법 :
select * from member where name like '%'||?||'%';
pstmt.setString(1,name);
일반 문자열 더하는 법 : "a"+"b"
쿼리에서 문자열 더하는 법 : 'a'||'b'
-> 주말에 위에것 사용해서 이름으로 모든 정보 조회하기 해보기!
* 결과보기
* 소스보기
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<jsp:include page="/menu.jsp"/>
<body>
<font size="2" color="red">${requestScope.error_message }</font><br>
마일리지 검색하기<hr><p>
<form action="/${initParam.context_root }/searchByMileageRange" method="post">
범위 : <input type = "text" name="startMileage">~<input type = "text" name="endMileage">
<input type="submit" value="검색">
</form><br><br>
이름으로 검색하기<hr><p>
<form action="/${initParam.context_root }/searchByName" method="post">
검색할 이름 : <input type="text" name="searchName">
<input type="submit" value="검색">
</form>
</body>
</html>
package member.servlet;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import member.dto.MemberDTO;
import memver.model.service.MemberManageService;
public class SearchByName extends HttpServlet {
private static final long serialVersionUID = 1L;
public SearchByName() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String searchName = null;
MemberManageService memberManageService = MemberManageService.getInstance();
ArrayList<MemberDTO> list;
String resUrl = null;
try{
searchName = request.getParameter("searchName");
}catch(NullPointerException e){
e.printStackTrace();
request.setAttribute("error_message", e.getMessage()+"값을 입력해주세요");
RequestDispatcher dispatcher = request.getRequestDispatcher("/search_form.jsp");
dispatcher.forward(request, response);
return;
}
try{
list = memberManageService.selectMemberByName(searchName);
request.setAttribute("searchNameList", list);
request.setAttribute("title", "검색 이름으로 조회 결과");
request.setAttribute("search_value", searchName);
System.out.println("searchName : "+searchName);
resUrl = "/res/search_result.jsp";
} catch (SQLException e) {
e.printStackTrace();
request.setAttribute("error_message", e.getMessage());
resUrl = "/res/error.jsp";
}
RequestDispatcher dispatcher = request.getRequestDispatcher(resUrl);
dispatcher.forward(request, response);
}
}
package memver.model.service;
import java.sql.SQLException;
import java.util.ArrayList;
import member.dto.MemberDTO;
import member.exception.DuplicatedIdException;
import member.exception.DuplicatedRegisterNumberException;
import member.model.dao.MemberDAO;
public class MemberManageService {
//회원 관리 비지니스 로직을 처리하는 Business Service 클래스
private static MemberManageService instance = new MemberManageService();
private MemberDAO dao;
private MemberManageService(){
dao = MemberDAO.getInstance();
}
public static MemberManageService getInstance(){
return instance;
}
//가입 처리 메소드
public void registerMember(MemberDTO mto)throws SQLException, DuplicatedIdException, DuplicatedRegisterNumberException{
//1. 등록된 ID가 있는 지 체크
// - 이미 등록된 ID라면 DuplicatedIdException를 발생시킨다.
if(dao.selectMemberById(mto.getId())!=null){
throw new DuplicatedIdException(mto.getId()+"는 이미등록된 아이디 입니다.");
}
//2. 등록된 주민번호가 있는 지 체크
// - 이미 등록된 주민번호라면 DuplicatedRegisterNumberException 발생시킨다.
if(dao.selectMemberByregisterNumber(mto.getRegisterNumber1(), mto.getRegisterNumber2())!=null){
throw new DuplicatedRegisterNumberException("는 이미 가입된 주민번호 입니다.");
}
//3. 디비에 회원정보 등록 처리
dao.insertMember(mto);
}
//전체 회원목록 조회
public ArrayList<MemberDTO> getMemberList() throws SQLException{
return dao.selectAllMember();
}
//마일리지 범위로 조회
public ArrayList<MemberDTO> selectMemberByMileageRange(int startMileage, int endMileage)throws SQLException {
return dao.selectMemberByMileageRange(startMileage, endMileage);
}
//ID로 회원 목록조회
public MemberDTO getMemberById(String id) throws SQLException{
return dao.selectMemberById(id);
}
//이름으로 회원 목록 조회
public ArrayList<MemberDTO> selectMemberByName(String searchName) throws SQLException{
return dao.selectMemberName(searchName);
}
}
package member.model.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import org.apache.tomcat.dbcp.dbcp.BasicDataSource;
import member.dto.MemberDTO;
import member.util.DatabaseUtility;
public class MemberDAO {
private static MemberDAO instance = new MemberDAO();
private DatabaseUtility dbUtil;
private MemberDAO(){
dbUtil = DatabaseUtility.getInstance();
}
public static MemberDAO getInstance(){
return instance;
}
/*
* id로 회원 정보를 조회하야 return 하는 메소드
* @param id 조회할 회원 ID
* @return
* @throws SQLException
*/
public MemberDTO selectMemberById(String id)throws SQLException{
//조회된 결과가 없다면 mto에 null값이 넘어간다.
MemberDTO mto= null;
Connection conn=null;
PreparedStatement pstmt = null;
ResultSet rset = null;
String sql = "select id, password, name, register_number1, register_number2, mileage from member where id=?";
try{
BasicDataSource ds = dbUtil.getDataSource();
conn = ds.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, id);
rset = pstmt.executeQuery();
if(rset.next()){
mto = new MemberDTO(rset.getString(1),rset.getString(2),rset.getString(3),rset.getString(4),rset.getString(5),rset.getInt(6));
}
}finally{
dbUtil.close(rset, pstmt, conn);
}
return mto;
}
/*
* 주민번호로 회원 정보를 조회하는 메소드
* @param registerNumber1 주민번호 앞6자리
* @param registerNumber2 주민번호 뒤7자리
* @return
* @thows SQLException
*/
public MemberDTO selectMemberByregisterNumber(String registerNumber1, String registerNumber2)throws SQLException{
MemberDTO mto= null;
BasicDataSource ds = dbUtil.getDataSource();
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rset = null;
String sql = "select id, password, name, register_number1, register_number2, mileage from member where register_Number1=? and register_Number2=?";
try{
conn = ds.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, registerNumber1);
pstmt.setString(2, registerNumber2);
rset = pstmt.executeQuery();
if(rset.next()){
mto = new MemberDTO(rset.getString(1), rset.getString(2), rset.getString(3), rset.getString(4), rset.getString(5), rset.getInt(6));
}
}finally{
dbUtil.close(rset, pstmt, conn);
}
return mto;
}
/*
* 회원정보를 DB에 insert하는 메소드
* @param mto 등록할 회원 정보
* @throws SQLEception
*/
public void insertMember(MemberDTO mto)throws SQLException{
BasicDataSource ds = dbUtil.getDataSource();
Connection conn = null;
PreparedStatement pstmt = null;
String sql = "insert into member (id, password, name, register_number1, register_number2, mileage) values(?,?,?,?,?,?)";
try{
conn = ds.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, mto.getId());
pstmt.setString(2, mto.getPassword());
pstmt.setString(3, mto.getName());
pstmt.setString(4, mto.getRegisterNumber1());
pstmt.setString(5, mto.getRegisterNumber2());
pstmt.setInt(6, mto.getMileage());
int cnt = pstmt.executeUpdate();
System.out.println(cnt+"개의 행이 삽입되었습니다.");
}finally{
dbUtil.close(pstmt, conn);
}
}
public ArrayList<MemberDTO> selectAllMember() throws SQLException{
ArrayList<MemberDTO> list = new ArrayList<MemberDTO>();
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rset = null;
String sql = "select id, password, name, register_number1, register_number2, mileage from member";
try{
BasicDataSource dataSource = dbUtil.getDataSource();
conn = dataSource.getConnection();
pstmt = conn.prepareStatement(sql);
rset = pstmt.executeQuery();
while(rset.next()){
list.add(new MemberDTO(rset.getString(1), rset.getString(2),
rset.getString(3), rset.getString(4), rset.getString(5), rset.getInt(6)));
}
}finally{
dbUtil.close(rset, pstmt, conn);
}
return list;
}
public ArrayList<MemberDTO> selectMemberByMileageRange(int startMileage, int endMileage)throws SQLException {
ArrayList<MemberDTO> searchMileageRangeMemberList = new ArrayList<MemberDTO>();
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rset = null;
// String sql = "select id, password, name, register_number1, register_number2, mileage from member where mileage>=? and mileage<=?";
String sql = "select id, password, name, register_number1, register_number2, mileage from member where mileage between ? and ?";
try{
BasicDataSource dataSource = dbUtil.getDataSource();
conn = dataSource.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setInt(1, startMileage);
pstmt.setInt(2, endMileage);
rset = pstmt.executeQuery();
while(rset.next()){
searchMileageRangeMemberList.add(new MemberDTO(rset.getString(1), rset.getString(2), rset.getString(3), rset.getString(4), rset.getString(5), rset.getInt(6)));
}
}finally{
dbUtil.close(rset, pstmt, conn);
}
return searchMileageRangeMemberList;
}
public ArrayList<MemberDTO> selectMemberName(String searchName) throws SQLException{
ArrayList<MemberDTO> searchNameMemberList = new ArrayList<MemberDTO>();
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rset = null;
String sql = "select id, password, name, register_number1, register_number2, mileage from member where name like '%'||?||'%'";
try{
BasicDataSource dataSource = dbUtil.getDataSource();
conn = dataSource.getConnection();
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, searchName);
rset = pstmt.executeQuery();
while(rset.next()){
searchNameMemberList.add(new MemberDTO(rset.getString(1), rset.getString(2), rset.getString(3), rset.getString(4), rset.getString(5), rset.getInt(6)));
System.out.println(searchNameMemberList);
}
}finally{
dbUtil.close(rset, pstmt, conn);
}
return searchNameMemberList;
}
}
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<jsp:include page="/menu.jsp"/>
<h2> ${requestScope.title } </h2><hr><p>
조회범위 : ${requestScope.search_value }
<table width="500" border="1" cellspacing="0">
<tr align="center">
<td>순번</td><td>아이디</td><td>이름</td><td>주민번호</td><td>마일리지</td>
</tr>
<c:forEach items="${requestScope.searchMileageRangeMemberList }" var="member_list" varStatus="cnt">
<tr align="center">
<td>${cnt.count }</td><td>${member_list.id }</td><td><a href="/servlet_member/SearchMemberByID?id=${member_list.id }">${member_list.name }</a></td><td>${member_list.registerNumber1 }-${member_list.registerNumber2 }</td><td>${member_list.mileage }</td>
</tr>
</c:forEach>
<c:forEach items="${requestScope.searchNameList }" var="member_list" varStatus="cnt">
<tr align="center">
<td>${cnt.count }</td><td>${member_list.id }</td><td><a href="/servlet_member/SearchMemberByID?id=${member_list.id }">${member_list.name }</a></td><td>${member_list.registerNumber1 }-${member_list.registerNumber2 }</td><td>${member_list.mileage }</td>
</tr>
</c:forEach>
</table>
</body>
</html>
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