JSP select标签数据库绑定数据

<%! private static final String SELECT_ALLIANCE_STMT="select allianceName from Alliance ";
ResultSet results = null;
DataSource ds = null;
Connection connection = null;
PreparedStatement stmt = null;
int num_of_rows = 0;
ArrayList arraylist=null; Iterator iterator=null; %>
<%! public void jspInit(){

try{
Context context = new InitialContext();
if ( context == null ) {
throw new RuntimeException("JNDI Context could not be found.");
}
ds = (DataSource)context.lookup("java:comp/env/jdbc/leagueDB");
if ( ds == null ) {
throw new RuntimeException("DataSource could not be found.");
}
connection = ds.getConnection();
stmt = connection.prepareStatement(SELECT_ALLIANCE_STMT);

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