请问这样的错误什么意思?涉及数据库的,含全部代码
编译出错信息:
sql_data.java:10: unreported exception java.sql.SQLException; must be caught or
declared to be thrown
Connection conn= DriverManager.getConnection(url,user,password);
^
1 error
请按任意键继续. . .
代码如下
//sql_data.java
package news;
import java.sql.*;
public class sql_data{
String sDBDriver = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
String url="jdbc:microsoft:sqlserver://10.5.67.232:1433;DatabaseName=pubs";
//pubs为你的数据库的
String user="sa";
String password="winefox";
Connection conn= DriverManager.getConnection(url,user,password);
Statement stmt = null;
ResultSet rs = null;
public sql_data()
{
try
{Class.forName(sDBDriver);
}
catch(java.lang.ClassNotFoundException e)
{
System.err.println("sql_data(): " + e.getMessage());
}
}
public void executeInsert(String sql)
{
try
{
conn = DriverManager.getConnection(url,user,password);
stmt = conn.createStatement();
stmt.executeUpdate(sql);
stmt.close();
conn.close();
}
catch(SQLException ex)
{System.err.println("sql_data.executeUpdate:"+ex.getMessage());
}
}
public ResultSet executeQuery(String sql)
{
try
{
conn = DriverManager.getConnection(url,user,password);
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);
rs = stmt.executeQuery(sql);
}
catch(SQLException ex)
{
System.err.println("sql_data.executeQuery:"+ex.getMessage());
}
return rs;
}
public void executeUpdate(String sql)
{
try {
conn = DriverManager.getConnection(url,user,password);
stmt = conn.createStatement();
stmt.executeUpdate(sql);
stmt.close();
conn.close();
}
catch(SQLException ex) {
System.err.println("aq.executeQuery: " + ex.getMessage());
}
}
public void executeDelete(String sql)
{
try
{
conn = DriverManager.getConnection(url,user,password);
stmt = conn.createStatement();
stmt.executeUpdate(sql);
stmt.close();
conn.close();
}
catch(SQLException ex)
{
System.err.println("sql_data.executeDelete:"+ex.getMessage());
}
}
public void closeStmt(){
try{
stmt.close();
}
catch(SQLException e){
e.printStackTrace();
}
}
public void closeConn(){
try{
conn.close();
}
catch(SQLException e){
e.printStackTrace();
}
}
}