Java post方法返回指定id为-1

Question

我使用带有MySQL后端的maven，jersey和jaxRS在Java中创建应用程序。 我有一个用户模型，服务和资源。对于create account方法，它为帐户ID返回-1。这设置为自动增量，所以我不知道它为什么会这样发布。

这是我的模特 Account.java

@Entity
@Table
@XmlRootElement
public class Account implements Serializable{
    @Id
    private int accountNo;
    private int cId;
    private int balance;
    private int sortCode;


    public Account(){
        this.accountNo = -1;
        this.cId = -1;
        this.balance = -1;
    }


    public Account(int accountNo, int cId, int balance, int sortCode) {
        this.accountNo = accountNo;
        this.cId = cId;
        this.balance = balance;
        this.sortCode = sortCode;
    }

    public int getAccountNo() {
        return accountNo;
    }

    public void setAccountNo(int accountNo) {
        this.accountNo = accountNo;
    }

    public int getcId() {
        return cId;
    }

    public void setcId(int cId) {
        this.cId = cId;
    }

    public int getBalance() {
        return balance;
    }

    public void setBalance(int balance) {
        this.balance = balance;
    }

    public int getSortCode() {
        return sortCode;
    }

    public void setSortCode(int sortCode) {
        this.sortCode = sortCode;
    }

这是服务方法

public Account createAccount(Account account) {
        Account acc = pm.getEntityManager().find(Account.class, account.getAccountNo());
        if (acc == null) {
            pm.startTransaction();
            pm.persist(account);
            pm.commit();
            pm.closeTransaction();
        }
        return account;
    }

资源

@POST
@Consumes({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
public Account addAccount(Account account){
    return accounts.createAccount(account);
}

Scehma

CREATE TABLE Banking.Account (
    accountNo int(11) NOT NULL AUTO_INCREMENT,
    cId       int(11) NOT NULL,
    balance   int(11) NOT NULL,
    sortCode  int(11) NOT NULL,
    PRIMARY KEY (accountNo),
    KEY cId (cId),
    KEY sortCode (sortCode),
    CONSTRAINT account_ibfk_1 
    FOREIGN KEY (cId) REFERENCES Banking.CUSTOMER(custId)
)   ENGINE=InnoDB AUTO_INCREMENT=816410 DEFAULT CHARSET=utf8;

当我通过邮差发布请求创建帐户时，所有内容都会创建，但会返回id为-1。

任何帮助？