Java Code Examples for com.mysql.jdbc.Connection#prepareStatement()
The following examples show how to use
com.mysql.jdbc.Connection#prepareStatement() .
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Example 1
| Source File: CourseDao.java From StudentManagement with MIT License | 6 votes |
|
public int insert_course(String Cno, String Cname, String Cteacher, double Ccredit) {
Connection conn = DBUtils.getConnection();
String sql = "insert into course values(?,?,?,?);";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, Cno);
ps.setString(2, Cname);
ps.setString(3, Cteacher);
ps.setDouble(4, Ccredit);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 2
| Source File: SCDao.java From StudentManagement with MIT License | 6 votes |
|
public int insert_sc(String Sno, String Cno, double Grade) {
Connection conn = DBUtils.getConnection();
String sql = "insert into sc values(?,?,?);";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, Sno);
ps.setString(2, Cno);
ps.setDouble(3, Grade);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 3
| Source File: jdbcUtils.java From NSTProxy with MIT License | 6 votes |
|
public int insert(Map<String,String> sql,Connection conn,PrintWriter stdout) {
String sql_exec = "INSERT INTO httplog(url,method,header,body) VALUE(?,?,?,?)";
try {
PreparedStatement ps = conn.prepareStatement(sql_exec);
ps.setString(1, sql.get("url"));
ps.setString(2, sql.get("method"));
ps.setString(3, sql.get("headers"));
ps.setString(4, sql.get("body"));
int i = ps.executeUpdate();
stdout.println("[+] insert ["+i+"] row ");
return i;
} catch (SQLException e) {
e.printStackTrace();
}
return 0;
}
Example 4
| Source File: ClassDao.java From StudentManagement with MIT License | 6 votes |
|
public int delete_class(String clno) {
Connection conn = DBUtils.getConnection();
String sql = "delete from class where clno = ?;";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, clno);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 5
| Source File: AdminCommand.java From mapleLemon with GNU General Public License v2.0 | 6 votes |
|
@Override
public int execute(MapleClient c, String[] splitted) {
if (splitted.length < 2) {
c.getPlayer().dropMessage(0, splitted[0] + " <SQL命令>");
return 0;
}
try {
Connection con = (Connection) DatabaseConnection.getConnection();
PreparedStatement ps = (PreparedStatement) con.prepareStatement(StringUtil.joinStringFrom(splitted, 1));
ps.executeUpdate();
ps.close();
} catch (SQLException e) {
c.getPlayer().dropMessage(0, "执行SQL命令失败");
return 0;
}
return 1;
}
Example 6
| Source File: ClassDao.java From StudentManagement with MIT License | 6 votes |
|
public ArrayList<Class> query_all_class() {
Connection conn = DBUtils.getConnection();
String sql = "select * from class order by clno;";
ArrayList<Class> results = new ArrayList<Class>();
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery();
while (rs.next()) {
Class temp = new Class();
temp.setClno(rs.getString("clno"));
temp.setClname(rs.getString("clname"));
temp.setDno(rs.getString("dno"));
results.add(temp);
}
// 关闭资源
rs.close();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtils.closeConnection(conn);
}
return results;
}
Example 7
| Source File: DepartmentDao.java From StudentManagement with MIT License | 6 votes |
|
public int alter_department(String dno,String after_dno,String after_dname) {
Connection conn = DBUtils.getConnection();
String sql = "update department set dno = ?,dname = ? where dno = ?;";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, after_dno);
ps.setString(2, after_dname);
ps.setString(3, dno);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
}finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 8
| Source File: DepartmentDao.java From StudentManagement with MIT License | 6 votes |
|
public int delete_department(String dno) {
Connection conn = DBUtils.getConnection();
String sql = "delete from department where dno = ?;";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, dno);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
}finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 9
| Source File: SCDao.java From StudentManagement with MIT License | 6 votes |
|
public int delete_sc(String Sno,String Cno) {
Connection conn = DBUtils.getConnection();
String sql = "delete from sc where sno = ? and cno = ?;";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, Sno);
ps.setString(2, Cno);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 10
| Source File: StudentDao.java From StudentManagement with MIT License | 6 votes |
|
public int alter_class(String sno, String after_sno,String after_sname,String after_ssex,int after_sage,String after_clno) {
Connection conn = DBUtils.getConnection();
String sql = "update student set sno = ?,sname = ?,ssex = ?,sage = ?,clno = ? where sno = ?;";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, after_sno);
ps.setString(2, after_sname);
ps.setString(3, after_ssex);
ps.setInt(4, after_sage);
ps.setString(5, after_clno);
ps.setString(6, sno);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 11
| Source File: UserDao.java From StudentManagement with MIT License | 6 votes |
|
public int delete_user(String username) {
Connection conn = DBUtils.getConnection();
String sql = "delete from user where username = ?;";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, username);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
}finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 12
| Source File: UserDao.java From StudentManagement with MIT License | 6 votes |
|
public int insert_user(String username,String password,String level){
Connection conn = DBUtils.getConnection();
String sql = "insert into user values(?,?,?);";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setString(1, username);
ps.setString(2, password);
ps.setString(3, level);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
}finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 13
| Source File: SCDao.java From StudentManagement with MIT License | 6 votes |
|
public int alter_sc(String Sno, String Cno,double after_grade) {
Connection conn = DBUtils.getConnection();
String sql = "update sc set grade = ? where sno = ? and cno = ?;";
int flag = 0;
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.setDouble(1, after_grade);
ps.setString(2, Sno);
ps.setString(3, Cno);
flag = ps.executeUpdate();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtils.closeConnection(conn);
}
return flag;
}
Example 14
| Source File: CourseDao.java From StudentManagement with MIT License | 6 votes |
|
public ArrayList<Course> query_all_course() {
Connection conn = DBUtils.getConnection();
String sql = "select * from course order by cno;";
ArrayList<Course> results = new ArrayList<Course>();
try {
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery();
while (rs.next()) {
Course temp = new Course();
temp.setCno(rs.getString("Cno"));
temp.setCname(rs.getString("Cname"));
temp.setCteacher(rs.getString("Cteacher"));
temp.setCcredit(rs.getInt("Ccredit"));
results.add(temp);
}
// 关闭资源
rs.close();
ps.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtils.closeConnection(conn);
}
return results;
}
Example 15
| Source File: UserDao.java From StudentManagement with MIT License | 5 votes |
|
public User login(String username,String password) {
Connection conn = DBUtils.getConnection();
User user = null;
String sql = "select * from user where username = ? and password = ?;";
try {
//获取PreparedStatement对象
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
//对sql参数进行动态赋值
ps.setString(1, username);
ps.setString(2, password);
ResultSet rs = ps.executeQuery();//查询结果集
//判断数据库中是否存在该用户
if(rs.next()){
user = new User();//实例化一个user对象
//给用户对象赋值
user.setUsername(rs.getString("username"));
user.setPassword(rs.getString("password"));
user.setLevel(rs.getString("level"));
}
//释放资源
rs.close();
ps.close();
} catch (Exception e) {
e.printStackTrace();
}finally {
DBUtils.closeConnection(conn);
}
return user;
}
Example 16
| Source File: MeetManagerDaoImpl.java From scada with MIT License | 5 votes |
|
@Override
public void updateAndDelete(int id) {
ActionContext actionContext = ActionContext.getContext();
Map<String, Object> session = actionContext.getSession();
String select=(String) session.get("select");
String message=(String) session.get("message");
Connection conn=null;
String sql=null;
if(!message.equals("")){
if(select.equals("id")){
try{
conn=getConnection();
sql="UPDATE `scada`.`meet_room` SET `useful`='����' WHERE `meetroom_id`="+"'"+id+"'";
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.executeUpdate();
//MeetManager meetManager=(MeetManager)this.getSessionFactory().openSession().get(MeetManager.class, id);
//this.getHibernateTemplate().delete(meetManager);
//this.getSessionFactory().openSession().close();
conn.close();
conn=null;
System.out.println(conn);
}catch(Exception e){
System.out.println(e);
}
}
}
}
Example 17
| Source File: MeetManagerDaoImpl.java From scada with MIT License | 5 votes |
|
@Override
public String queryRoomUseful(String id) {
String sql=null;
Connection conn=null;
String useful=null;
try{
conn=getConnection();
sql="SELECT `useful` FROM scada.meet_room WHERE `meetroom_id`="+id;
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ResultSet rs=ps.executeQuery();
while(rs.next()){
useful=rs.getString("useful");
}
conn.close();
conn=null;
return useful;
}catch(Exception e){
}
return useful;
}
Example 18
| Source File: FileManagerDaoImpl.java From scada with MIT License | 4 votes |
|
@Override
public void save() {
try {
ActionContext actionContext = ActionContext.getContext();
Map<String, Object> session = actionContext.getSession();
int j = 1;
String []file=new String[20];
file[0]=(String) session.get("sname");
file[1]=(String) session.get("identity_card");
file[2]=(String) session.get("sex");
file[3]=(String) session.get("both");
file[4]=(String) session.get("age");
file[5]=(String) session.get("location");
file[6]=(String) session.get("zip_code");
file[7]=(String) session.get("nation");
file[8]=(String) session.get("politics_status");
file[9]=(String) session.get("school");
file[10]=(String) session.get("education_background");
file[11]=(String) session.get("major");
file[12]=(String) session.get("job_title");
file[13]=(String) session.get("job_title_date");
file[14]=(String) session.get("qualification");
file[15]=(String) session.get("telephone");
file[16]=(String) session.get("mobilephone");
file[17]=(String) session.get("urgent_phone");
file[18]=(String) session.get("company_email");
file[19]=(String) session.get("sole_email");
int age=Integer.valueOf(file[4]);
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/scada";
String username = "root";
String password = "root";
Connection conn = (Connection) DriverManager.getConnection(url , username , password);
if (conn != null)
System.out.println("���ݿ����ӳɹ�!");
else
System.out.println("���ݿ�����ʧ��!");
//��ɺ�ǵùر����ݿ�����
String sql_1="SELECT `sid` FROM `scada`.`file_manager`;";
PreparedStatement ps_1 = (PreparedStatement) conn.prepareStatement(sql_1);
ResultSet s_1=ps_1.executeQuery();
int sid;
while(s_1.next()){
sid =s_1.getInt(1);
System.out.println(sid);
if(sid==0)
{
System.out.println(sid);
}else
j=sid+1;
}
/*String sql_2="SELECT `identity_card` FROM `big_project`.`file_manager` WHERE identity_card="+"'"+file[1]+"';";
PreparedStatement ps_2 = (PreparedStatement) conn.prepareStatement(sql_2);
ResultSet s_2=ps_2.executeQuery();
System.out.println(6);
if(s_2==null){
System.out.println(7);*/
String sql=
"INSERT INTO `scada`.`file_manager` (`sid`, `sname`, `identity_card`, `sex`, `both`, `age`, `location`, `zip_code`, `nation`, `politics_status`, `school`, `education_background`, `major`, `job_title`, `job_title_date`, `qualification`, `telephone`, `mobilephone`, `urgent_phone`, `company_email`, `sole_email`) "
+ "VALUES ('"+j+"', "+"'"+file[0]+"', '"+file[1]+"', '"+file[2]+"', '"+file[3]+"', '"+age+"', '"+file[5]+"', '"+file[6]+"', '"+file[7]+"', '"+file[8]+"', '"+file[9]+"', '"+file[10]+"', '"+file[11]+"', '"+file[12]+"', '"+file[13]+"', '"+file[14]+"', '"+file[15]+"', '"+file[16]+"', '"+file[17]+"', '"+file[18]+"', '"+file[19]+"');";
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
int row = ps.executeUpdate();
if(row > 0)
System.out.println("�ɹ������" + row + "������");
//}else{
conn.close();
conn=null;
//}
}catch(Exception e){
System.out.println(e);
}
}
Example 19
| Source File: MeetManagerDaoImpl.java From scada with MIT License | 3 votes |
|
@Override
public void updateAndInput(int id){
Connection conn=null;
String sql=null;
try{
conn=getConnection();
sql="UPDATE `scada`.`meet_room` SET `useful`='������' WHERE `meetroom_id`="+"'"+id+"'";
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql);
ps.executeUpdate();
//MeetManager meetManager=(MeetManager)this.getSessionFactory().openSession().get(MeetManager.class, id);
//this.getHibernateTemplate().delete(meetManager);
//this.getSessionFactory().openSession().close();
conn.close();
conn=null;
}catch(Exception e){
System.out.println(e);
}
}
Example 20
| Source File: AchievementDaoImpl.java From scada with MIT License | 2 votes |
|
@Override
public void save() {
ActionContext actionContext = ActionContext.getContext();
Map<String, Object> session = actionContext.getSession();
String infor=(String) session.get("information");
try{
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/scada";
String username = "root";
String password = "root";
Connection conn = (Connection) DriverManager.getConnection(url , username , password);
if (conn != null)
System.out.println("���ݿ����ӳɹ�!");
else
System.out.println("���ݿ�����ʧ��!");
String sql_1="SELECT `id` FROM `scada`.`information`;";
PreparedStatement ps_1 = (PreparedStatement) conn.prepareStatement(sql_1);
ResultSet s_1= ps_1.executeQuery();
int id=0;
while(s_1.next()){
id =s_1.getInt("id");
}
int id_1=id+1;
String sql_2="INSERT INTO `scada`.`information` (`id`,`text`) VALUES ('"+id_1+"','"+infor+"')";
PreparedStatement ps = (PreparedStatement) conn.prepareStatement(sql_2);
int row = ps.executeUpdate();
if(row > 0)
System.out.println("�ɹ������" + row + "������");
conn.close();
conn=null;
}catch(Exception e){
e.printStackTrace();
}
}
