executeUpdate()执行不了

Question

jdbc连接数据库，执行到executeUpdate()时就一直没反应，试过输出语句，在此前可以输出，此后就没反应了，代码如下：
public static boolean insert(int id, String pwd, String name,
String phone, String email){
boolean flag = false;
Connection conn = null;
PreparedStatement prep = null;
try {
conn = DriverManager.getConnection(url, dbUser, dbPassword);
String sql = "insert into user_001(id,password,name,phone,email) " +
"values(?,?,?,?,?)";
prep = conn.prepareStatement(sql);
prep.setInt(1, id);
prep.setString(2, pwd);
prep.setString(3, name);
prep.setString(4, phone);
prep.setString(5, email);
System.out.println("before n");
int n = prep.executeUpdate();
System.out.println("n:" + n);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(prep != null){
try {
prep.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(conn != null){
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return flag;
}

Answer 1

驱动加载了吗？抛异常了吗？