java+JDBC小项目《学生管理系统》源码带注解
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Java+javabean+JDBC学生管理系统
一、项目结构
本项目是使用javabean和jdbc做的，这个包是实体包
这个是菜单包，源码不会再发这些，自己写就好了。
二、项目运行结果
三、源码
废话不多说，直接上源码：
这两个是关键源码，是负责登录和学生信息操作的逻
辑类：
public class AdminDaoImpl extends DBHelper implements AdminDao { Admin admin = null;
/**
* 登录
*/
@SuppressWarnings("resource")
@Override
public Admin login(String name) {
String sql = "select * from admin where username=?";
Object[] param = {name};
Object obj = this.excute(sql, param);
ResultSet rs = (ResultSet) obj;
try {
while (rs.next()) {
admin = new Admin();
String username = rs.getString("username");
String password = rs.getString("password");
admin.setUsername(username);
admin.setPassword(password);
}
} catch (SQLException e) {
System.out.println("未找到此name");
}
return admin;
}
}
public class StudentDaoImpl extends DBHelper implements StudentDao {
Student stu = null;
List
@SuppressWarnings("resource")
@Override
public Student getInfoByid(int id) {
String sql = "select * from student where id=?";
Object[] param = { id };
Object obj = this.excute(sql, param);
ResultSet rs = (ResultSet) obj;
stu = new Student();
try {
while (rs.next()) {
stu.setId(rs.getInt("id"));
stu.setName(rs.getString("name"));
stu.setAge(rs.getInt("age"));
stu.setGender(rs.getString("gender"));
stu.setGrade(rs.getString("grade"));
stu.setPhone(rs.getLong("phone"));
stu.setEmail(rs.getString("email"));
stu.setAddress(rs.getString("address"));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
this.closeAll();
}
return stu;
}
@SuppressWarnings("resource")
@Override
public List
String sql = "select * from student";
Object obj = this.excute(sql, null);
ResultSet rs = (ResultSet) obj;
list = new ArrayList
try {
while (rs.next()) {
stu = new Student();
stu.setId(rs.getInt("id"));
stu.setName(rs.getString("name"));
stu.setAge(rs.getInt("age"));
stu.setGender(rs.getString("gender"));
stu.setGrade(rs.getString("grade"));
stu.setPhone(rs.getLong("phone"));
stu.setEmail(rs.getString("email"));
stu.setAddress(rs.getString("address"));
list.add(stu);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
this.closeAll();
}
return list;
}
@SuppressWarnings("resource")
@Override
public String getNameById(int id) {
String name = null;
String sql = "select name from student where id=?";
Object[] param = { id };
Object obj = this.excute(sql, param);
ResultSet rs = (ResultSet) obj;
try {
while (rs.next()) {
name = rs.getString("name");
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
this.closeAll();
}
return name;
}
@SuppressWarnings("resource")
@Override
public int getidByIntput(int id) {
int num = 0;
String sql = "select id from student where id=?";
Object[] param = { id };
Object obj = this.excute(sql, param);
ResultSet rs = (ResultSet) obj;
try {
while (rs.next()) {
num = rs.getInt("id");
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
this.closeAll();
}