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Java code:
public boolean isLogin(ManagerVo manager) {
boolean flag = false ;
PreparedStatement pstmt = null;
ResultSet rs = null;
String sql = null;
DataBaseConnection dbc = null;

sql = "SELECT account,password from manager WHERE account=? and password=?";
try
{
dbc = new DataBaseConnection();
// ʵÀý»¯Êý¾Ý¿â²Ù×÷¶ÔÏó
pstmt = dbc.getConnection().prepareStatement(sql);

// ÉèÖÃpstmtµÄÄÚÈÝ£¬Êǰ´IDºÍÃÜÂëÑéÖ¤
pstmt.setString(1,manager.getAccount());
pstmt.setString(2, manager.getPassword());

// ²éѯ¼Ç¼
rs = pstmt.executeQuery();
// ÅжÏÊÇ·ñÓмǼ
if(rs.next())
{
// Èç¹ûÓмǼ£¬ÔòÖ´Ðд˶δúÂë
// ÓÃ


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