大家帮我看看这小段代码那里错了啊？？？？？？？？？

[zhang80718]

public class SqlBean {
public static synchronized Connection getConnection() throws Exception{

try{
Class.forName(DB_DRIVER).newInstance(); //常量定义过了
String url =DB_CONNSTRE;
String username = "sa";
String password = "sa";
Connection con = DriverManager.getConnection(url,username,password);
return con;
}catch(SQLException e){
System.out.println(e);
throw e;
}
}

public void executeInsert(String sql)
{
try
{
Statement stmt = this.getConnection().createStatement();
stmt.executeUpdate(sql);
}
catch(SQLException ex)
{
System.out.print("执行插入有错误" + ex.getMessage());
}
}
}


Statement stmt = this.getConnection().createStatement(); 这提示我“未处理的异常类型Exception”

[interpb]

public static synchronized Connection getConnection() throws Exception{

try{
Class.forName(DB_DRIVER).newInstance(); //常量定义过了
String url =DB_CONNSTRE;
String username = "sa";
String password = "sa";
Connection con = DriverManager.getConnection(url,username,password);
return con;
}catch(SQLException e){
System.out.println(e);
throw e;
} catch(ClassNotFoundException ce) {
///
}

}

[interpb]

Class.forName(DB_DRIVER).newInstance(); 这个方法会抛出ClassNotFoundException

[chouchy]

在
catch(SQLException ex)
{
System.out.print("执行插入有错误" + ex.getMessage());
}
后继续
catch(Exception e)
{
}

[wsk_228]

楼上正解，如果在不清楚是什么异常的学以致情况下,建意还是用Exception来捕获异常

[smart886]

Statement stmt = this.getConnection().createStatement();
改成
Connection con = getConnection();
Statement stmt = con().createStatement();
试试
可能是那个this多了，不用this.getConnection().createStatement();
直接Statement stmt = getConnection().createStatement();