/* * 描述了郵件服務(wù)器的配置信息 */package MobileEmail;import javax.microedition.rms.*;/** * * @author Administrator */public class EMailConfig {    private static EMailConfig configInstance;//配置對象實例    private static final String CONFIG_RMS="Config";    private String name;    private String emailAddr;    private String accounts;    private String password;    private String smtpServer;    // private EmailConfig(){}    //返回一個服務(wù)器配置數(shù)據(jù)實例對象，如果返回null 表示沒有配置信息    public static EMailConfig getInstance(){        try{            RecordStore rs=RecordStore.openRecordStore(CONFIG_RMS, false);            configInstance=new EMailConfig();            configInstance.name=new String(rs.getRecord(1));            configInstance.emailAddr=new String(rs.getRecord(2));            configInstance.accounts=new String(rs.getRecord(3));            configInstance.password=new String(rs.getRecord(4));            configInstance.smtpServer=new String(rs.getRecord(5));            rs.closeRecordStore();        }        catch(RecordStoreException res){            System.out.println(res);            configInstance=null;        }        return configInstance;    }    //更新郵件服務(wù)器的配置數(shù)據(jù)    public static void updateConfig(String name,String emailAddr,String accounts,String password,String smtpHost){        try{            byte[] nameBytes=name.getBytes();            byte[] emailAddrBytes=emailAddr.getBytes();            byte[] accountsBytes=accounts.getBytes();            byte[] pswBytes=password.getBytes();            byte[] smtpBytes=smtpHost.getBytes();            //打開數(shù)據(jù)庫            RecordStore rs=RecordStore.openRecordStore(CONFIG_RMS, true);            int numRecords=rs.getNumRecords();            if(numRecords==0){                rs.addRecord(nameBytes, 0, nameBytes.length);                rs.addRecord(emailAddrBytes, 0, emailAddrBytes.length);                rs.addRecord(accountsBytes, 0, accountsBytes.length);                rs.addRecord(pswBytes, 0, pswBytes.length);                rs.addRecord(smtpBytes, 0, smtpBytes.length);            }            else{//數(shù)據(jù)已經(jīng)存在 更新記錄                rs.setRecord(1,nameBytes, 0, nameBytes.length);                rs.setRecord(2,emailAddrBytes, 0, emailAddrBytes.length);                rs.setRecord(3,accountsBytes, 0, accountsBytes.length);                rs.setRecord(4,pswBytes, 0, pswBytes.length);                rs.setRecord(5,smtpBytes, 0, smtpBytes.length);            }            rs.closeRecordStore();        }        catch(RecordStoreException rse){            System.out.println(rse);        }        if(configInstance!=null){            configInstance.name=name;            configInstance.emailAddr=emailAddr;            configInstance.accounts=accounts;            configInstance.password=password;            configInstance.smtpServer=smtpHost;        }    }    public String getName(){        return name;    }    public String getEmailAddr(){        return emailAddr;    }    public String getAccounts(){        return accounts;    }    public String getPassword(){        return password;    }    public String getSMTPServer(){        return smtpServer;    }}