从mysql读出来的中文数据为乱码，有什么办法解决？解决思路

从mysql读出来的中文数据为乱码，有什么办法解决？
php是用mysql_query( "set   names   'gbk ' ")读中文的。JSP有类似的功能吗？

还有一个问题，JSP怎么包含另外一个文件呢？是import还是include？

------解决方案--------------------
Java要读出后进行转码
public class HelloWorld

{

public static void main(String[] argv){

try{

System.out.println( "中文 ");//1

System.out.println( "中文 ".getBytes());//2

System.out.println( "中文 ".getBytes( "GB2312 "));//3

System.out.println( "中文 ".getBytes( "ISO8859_1 "));//4

System.out.println(new String( "中文 ".getBytes()));//5

System.out.println(new String( "中文 ".getBytes(), "GB2312 "));//6

System.out.println(new String( "中文 ".getBytes(), "ISO8859_1 "));//7

System.out.println(new String( "中文 ".getBytes( "GB2312 ")));//8

System.out.println(new String( "中文 ".getBytes( "GB2312 "), "GB2312 "));//9

System.out.println(new String( "中文 ".getBytes( "GB2312 "), "ISO8859_1 "));//10

System.out.println(new String( "中文 ".getBytes( "ISO8859_1 ")));//11

System.out.println(new String( "中文 ".getBytes( "ISO8859_1 "), "GB2312 "));//12

System.out.println(new String( "中文 ".getBytes( "ISO8859_1 "), "ISO8859_1 "));//13

}

catch(Exception e){

e.printStackTrace();

}

}

}