rms存储对象后遍历出错,物理文件里面有数据

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rms存储对象后遍历出错,物理文件里面有数据10

Custom代码：
package com.test2;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

public class Customer {

private int id;
private String name;
private String password;

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

public byte[] objectToByteArray(){
ByteArrayOutputStream bos=new ByteArrayOutputStream();
DataOutputStream dos=new DataOutputStream(bos);
try {
dos.write(this.id);
dos.writeUTF(this.name);
//dos.writeUTF(this.password);

} catch (IOException e) {
e.printStackTrace();
}finally{
try {
bos.close();
dos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return bos.toByteArray();
}

public static Customer byteArrayToObject(byte[]b){
ByteArrayInputStream bis=new ByteArrayInputStream(b);
DataInputStream dis=new DataInputStream(bis);
Customer cus=new Customer();
try {
    cus.setId(dis.readInt());
cus.setName(dis.readUTF());
//cus.setPassword(dis.readUTF());
bis.close();
dis.close();
} catch (IOException e) {
e.printStackTrace();
}
return cus;
}
}

MIDlet代码：
package com.test2;

import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.StringItem;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.rms.RecordStore;
import javax.microedition.rms.RecordStoreException;
import javax.microedition.rms.RecordStoreNotOpenException;

public class MIDlet4 extends MIDlet{

    private Display dis;
    private Form form;
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
}

protected void pauseApp() {
}

protected void startApp() throws MIDletStateChangeException {
        dis=Display.getDisplay(this);
RecordStore rs=null;
form=new Form("存读对象");
try{
//存取对象
rs=RecordStore.openRecordStore("RS4", true);
    Customer cus=new Customer();
    cus.setId(1);
    cus.setName("george");
    cus.setPassword("123456");
    byte[] b=cus.objectToByteArray();
    rs.addRecord(b, 0, b.length);
    System.out.println(rs.getNumRecords());

    //读出对象
    byte[]b2=rs.getRecord(1);
    Customer cus2=Customer.byteArrayToObject(b2);
    StringItem si=new StringItem("", "");
    si.setText("I D :"+cus.getId()+"\n用户名："+cus2.getName()+"\n密码：");

    form.append(si);
    dis.setCurrent(form);

}catch(Exception e){
e.printStackTrace();
}finally{
try {
rs.closeRecordStore();
} catch (RecordStoreNotOpenException e) {
e.printStackTrace();
} catch (RecordStoreException e) {
e.printStackTrace();
}
}
}

}

[b][/b][size=x-small][/size]希望各位大虾们指教，谢谢各位！！

J2ME