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Update MemberDaoImpl.java

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prwfxgajt 8 months ago
parent 88614c6871
commit 5f88231860
1 changed files with 125 additions and 124 deletions
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ticketing-master/src/com/cn/dao/impl/MemberDaoImpl.java
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@ -1,138 +1,139 @@
package com.cn.dao.impl; package com.cn.dao.impl; // 实现MemberDao接口的包
import java.sql.Connection; import java.sql.*; // 导入SQL相关类
import java.sql.PreparedStatement; import java.util.*; // 导入集合相关类
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
import com.cn.dao.MemberDao; import com.cn.dao.MemberDao; // 导入MemberDao接口
import com.cn.domain.Member; import com.cn.domain.Member; // 导入Member实体类
import com.cn.util.JDBCUtil; import com.cn.util.JDBCUtil; // 导入JDBC工具类
/** /**
* @description * 实现MemberDao接口，提供会员数据访问操作。
* @author lxs
* @version 1.0
* @since 1.0
* @date 2019年9月8日
*/ */
public class MemberDaoImpl implements MemberDao { public class MemberDaoImpl implements MemberDao {
private Connection conn = null; private Connection conn = null; // 数据库连接
private PreparedStatement pstmt = null; private PreparedStatement pstmt = null; // 预编译语句
private ResultSet rs; private ResultSet rs; // 结果集
@Override @Override
public int add(Member member) throws SQLException { public int add(Member member) throws SQLException { // 添加会员
String sql = "insert into member(username,password,registertime,ifuse,logintimes) values(?,?,?,?,?)"; String sql = "insert into member(username,password,registertime,ifuse,logintimes) values(?,?,?,?,?)";
conn = JDBCUtil.getConnection(); conn = JDBCUtil.getConnection(); // 获取数据库连接
pstmt = conn.prepareStatement(sql); pstmt = conn.prepareStatement(sql); // 准备SQL语句
pstmt.setObject(1, member.getUserName()); pstmt.setObject(1, member.getUserName()); // 设置参数
pstmt.setObject(2, member.getPassword()); pstmt.setObject(2, member.getPassword());
pstmt.setObject(3, member.getRegisterTime()); pstmt.setObject(3, member.getRegisterTime());
pstmt.setObject(4, member.getIfUse()); pstmt.setObject(4, member.getIfUse());
pstmt.setObject(5, member.getLogintimes()); pstmt.setObject(5, member.getLogintimes());
int status = pstmt.executeUpdate(); int status = pstmt.executeUpdate(); // 执行插入
pstmt.close(); closeResources(); // 关闭资源
conn.close(); return status;
return status; }
}
@Override @Override
public int delete(int memberId) throws SQLException { public int delete(int memberId) throws SQLException { // 根据ID删除会员
String sql = "delete from member where memberid=?"; String sql = "delete from member where memberid=?";
conn = JDBCUtil.getConnection(); conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql); pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, memberId); pstmt.setObject(1, memberId);
int status = pstmt.executeUpdate(); int status = pstmt.executeUpdate();
pstmt.close(); closeResources();
conn.close(); return status;
return status; }
}
@Override @Override
public int update(Member member) throws SQLException { public int update(Member member) throws SQLException { // 更新会员信息
String sql = "update member set username=?,password=?,ifuse=?,logintimes=? where memberid=?"; String sql = "update member set username=?,password=?,ifuse=?,logintimes=? where memberid=?";
conn = JDBCUtil.getConnection(); conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql); pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, member.getUserName()); pstmt.setObject(1, member.getUserName());
pstmt.setObject(2, member.getPassword()); pstmt.setObject(2, member.getPassword());
pstmt.setObject(3, member.getIfUse()); pstmt.setObject(3, member.getIfUse());
pstmt.setObject(4, member.getLogintimes()); pstmt.setObject(4, member.getLogintimes());
pstmt.setObject(5, member.getMemberId()); pstmt.setObject(5, member.getMemberId());
int status = pstmt.executeUpdate(); int status = pstmt.executeUpdate();
pstmt.close(); closeResources();
conn.close(); return status;
return status; }
}
@Override @Override
public List<Member> getAll() throws SQLException { public List<Member> getAll() throws SQLException { // 获取所有会员
String sql = "select * from member"; String sql = "select * from member";
conn = JDBCUtil.getConnection(); conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql); pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery(); rs = pstmt.executeQuery();
List<Member> members = new ArrayList<Member>(); List<Member> members = new ArrayList<>();
while (rs.next()) { while (rs.next()) {
int memberId = rs.getInt("memberId"); Member member = resultSetToMember(rs); // 将结果集转换为Member对象
String userName = rs.getString("userName"); members.add(member);
String password = rs.getString("password"); }
Timestamp registerTime = rs.getTimestamp("registerTime"); closeResources();
int ifUse = rs.getInt("ifUse"); return members;
Timestamp logintimes = rs.getTimestamp("logintimes"); }
Member member = new Member(memberId, userName, password, registerTime, ifUse, logintimes);
members.add(member);
}
rs.close();
pstmt.close();
conn.close();
return members;
}
@Override @Override
public Member getMemberById(int memberId) throws SQLException { public Member getMemberById(int memberId) throws SQLException { // 根据ID获取会员
String sql = "select * from member where memberid=?"; String sql = "select * from member where memberid=?";
conn = JDBCUtil.getConnection(); conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql); pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, memberId); pstmt.setObject(1, memberId);
rs = pstmt.executeQuery(); rs = pstmt.executeQuery();
Member member = null; Member member = null;
while(rs.next()) { if (rs.next()) {
String userName = rs.getString("userName"); member = resultSetToMember(rs); // 将结果集转换为Member对象
String password = rs.getString("password"); }
Timestamp registerTime = rs.getTimestamp("registerTime"); closeResources();
int ifUse = rs.getInt("ifUse"); return member;
Timestamp logintimes = rs.getTimestamp("logintimes"); }
member = new Member(memberId, userName, password, registerTime, ifUse, logintimes);
}
rs.close();
pstmt.close();
conn.close();
return member;
}
@Override @Override
public Member getMemberByName(String userName) throws SQLException { public Member getMemberByName(String userName) throws SQLException { // 根据用户名获取会员
String sql = "select * from member where username=?"; String sql = "select * from member where username=?";
conn = JDBCUtil.getConnection(); conn = JDBCUtil.getConnection();
pstmt = conn.prepareStatement(sql); pstmt = conn.prepareStatement(sql);
pstmt.setObject(1, userName); pstmt.setObject(1, userName);
rs = pstmt.executeQuery(); rs = pstmt.executeQuery();
Member member = null; Member member = null;
while(rs.next()) { if (rs.next()) {
int memberId = rs.getInt("memberId"); member = resultSetToMember(rs); // 将结果集转换为Member对象
String password = rs.getString("password"); }
Timestamp registerTime = rs.getTimestamp("registerTime"); closeResources();
int ifUse = rs.getInt("ifUse"); return member;
Timestamp logintimes = rs.getTimestamp("logintimes"); }
member = new Member(memberId, userName, password, registerTime, ifUse, logintimes);
}
rs.close();
pstmt.close();
conn.close();
return member;
}
// 将结果集转换为Member对象的方法
private Member resultSetToMember(ResultSet rs) throws SQLException {
int memberId = rs.getInt("memberId");
String userName = rs.getString("userName");
String password = rs.getString("password");
Timestamp registerTime = rs.getTimestamp("registerTime");
int ifUse = rs.getInt("ifUse");
Timestamp logintimes = rs.getTimestamp("logintimes");
return new Member(memberId, userName, password, registerTime, ifUse, logintimes);
}
// 关闭数据库资源的方法
private void closeResources() {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if (pstmt != null) {
try {
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
} }

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