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09593c4d8c
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e4f65046ea
@ -1,61 +0,0 @@
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package cn.fly.entity;
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public class TeamInfo {
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private String id;
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private String sno;
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private String name;
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private String sex;
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private String tel;
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// Getter和Setter方法
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public String getId() {
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return id;
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}
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public void setId(String id) {
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this.id = id;
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}
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public String getSno() {
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return sno;
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}
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public void setSno(String sno) {
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this.sno = sno;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public String getSex() {
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return sex;
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}
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public void setSex(String sex) {
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this.sex = sex;
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}
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public String getTel() {
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return tel;
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}
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public void setTel(String tel) {
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this.tel = tel;
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}
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@Override
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public String toString() {
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return "TeamInfo{" +
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"id='" + id + '\'' +
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", sno='" + sno + '\'' +
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", name='" + name + '\'' +
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", sex='" + sex + '\'' +
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", tel='" + tel + '\'' +
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'}';
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}
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}
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@ -1,150 +0,0 @@
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package cn.fly.jdbc;
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import cn.fly.entity.TeamInfo;
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import java.io.IOException;
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import java.sql.*;
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import java.util.*;
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public class TeamInfoDal {
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// 数据库连接字符串和相关属性
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private static final String DB_URL = "jdbc:mysql://localhost:3306/DBTeam";
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private static final String USER = "root";
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private static final String PASS = "20030815";
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// JDBC驱动名
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private static final String DRIVER = "com.mysql.cj.jdbc.Driver";
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// Connection对象
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private Connection conn;
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public static void main(String[] args) throws IOException {
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try {
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// 加载JDBC驱动
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Class.forName("com.mysql.cj.jdbc.Driver");
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// 建立数据库连接
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Connection conn = DriverManager.getConnection(DB_URL, USER, PASS);
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System.out.println("连接成功");
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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// 构造函数
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public TeamInfoDal() {
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try {
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// 加载JDBC驱动
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Class.forName("com.mysql.cj.jdbc.Driver");
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// 建立数据库连接
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conn = DriverManager.getConnection(DB_URL, USER, PASS);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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// 添加报名信息
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public boolean addTeamInfo(TeamInfo teamInfo) {
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String sql = "INSERT INTO TeamInfo (id, sno, name, sex, tel) VALUES (?, ?, ?, ?, ?)";
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try (PreparedStatement stmt = conn.prepareStatement(sql)) {
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stmt.setString(1, teamInfo.getId());
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stmt.setString(2, teamInfo.getSno());
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stmt.setString(3, teamInfo.getName());
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stmt.setString(4, teamInfo.getSex());
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stmt.setString(5, teamInfo.getTel());
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// 执行插入操作并返回结果
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int rowsAffected = stmt.executeUpdate();
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return rowsAffected > 0;
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} catch (SQLException e) {
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e.printStackTrace();
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return false;
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}
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}
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// 修改报名信息
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public boolean updateTeamInfo(TeamInfo teamInfo) {
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String sql = "UPDATE TeamInfo SET sno=?, name=?, sex=?, tel=? WHERE id=?";
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try (PreparedStatement stmt = conn.prepareStatement(sql)) {
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stmt.setString(1, teamInfo.getSno());
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stmt.setString(2, teamInfo.getName());
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stmt.setString(3, teamInfo.getSex());
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stmt.setString(4, teamInfo.getTel());
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stmt.setString(5, teamInfo.getId());
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int rowsAffected = stmt.executeUpdate();
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return rowsAffected > 0;
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} catch (SQLException e) {
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e.printStackTrace();
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return false;
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}
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}
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// 删除报名信息
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public boolean deleteTeamInfo(String id) {
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String sql = "DELETE FROM TeamInfo WHERE id=?";
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try (PreparedStatement stmt = conn.prepareStatement(sql)) {
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stmt.setString(1, id);
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int rowsAffected = stmt.executeUpdate();
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return rowsAffected > 0;
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} catch (SQLException e) {
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e.printStackTrace();
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return false;
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}
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}
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// 根据id查询某条信息
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public TeamInfo getTeamInfoById(String id) {
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String sql = "SELECT * FROM TeamInfo WHERE id=?";
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TeamInfo teamInfo = null;
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try (PreparedStatement stmt = conn.prepareStatement(sql)) {
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stmt.setString(1, id);
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ResultSet rs = stmt.executeQuery();
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if (rs.next()) {
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teamInfo = new TeamInfo();
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teamInfo.setId(rs.getString("id"));
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teamInfo.setSno(rs.getString("sno"));
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teamInfo.setName(rs.getString("name"));
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teamInfo.setSex(rs.getString("sex"));
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teamInfo.setTel(rs.getString("tel"));
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}
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} catch (SQLException e) {
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e.printStackTrace();
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}
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return teamInfo;
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}
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// 查询所有数据
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public List<TeamInfo> getAllTeamInfos() {
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String sql = "SELECT * FROM TeamInfo";
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List<TeamInfo> list = new ArrayList<>();
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try (Statement stmt = conn.createStatement()) {
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ResultSet rs = stmt.executeQuery(sql);
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while (rs.next()) {
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TeamInfo teamInfo = new TeamInfo();
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teamInfo.setId(rs.getString("id"));
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teamInfo.setSno(rs.getString("sno"));
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teamInfo.setName(rs.getString("name"));
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teamInfo.setSex(rs.getString("sex"));
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teamInfo.setTel(rs.getString("tel"));
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list.add(teamInfo);
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}
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} catch (SQLException e) {
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e.printStackTrace();
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}
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for (TeamInfo teamInfo : list) {
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System.out.println(teamInfo.toString());
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}
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return list;
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}
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// 关闭数据库连接
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public void close() {
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try {
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if (conn != null && !conn.isClosed()) {
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conn.close();
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}
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} catch (SQLException e) {
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e.printStackTrace();
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}
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}
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}
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