为循环保存内部操作

Question

我在spring +hibernate工作.

我正在为循环做创建操作，但它只执行了一次。这是我的代码样本。

        String[] loanIds = request.getParameterValues("loanId");

loanIds值为5

        for (String string : loanIds) {                 
            loanFinance.setFundingBankId(bankId);
            loanFinance.setIdFundsProductPurpose(Long.valueOf(68449));
            loanFinance.setLoanId(Long.parseLong(string));
            loanFinance.setLastModifiedBy(user.getId());
            loanFinance.setIdEntityloan(Long.parseLong(string));
            loanFinance.setAmount(10000.00);
            loanFinance.setStatus("A"); 

            commonRepository.save(loanFinance);     
            System.out.println("Saved Datas");
        }

我catalina.out我可以看到“保存的数据”打印5次..。但是表只插入了一次。

有人能在这方面给我建议吗，我在这里做错了什么..

Answer 1

您正在一次又一次地保存同一个对象。如果要插入5个不同的元素，则需要在每次迭代时创建一个新元素。

 for (String string : loanIds) {  
        loanFinance = new LoanFinance();               
        loanFinance.setFundingBankId(bankId);
        loanFinance.setIdFundsProductPurpose(Long.valueOf(68449));
        loanFinance.setLoanId(Long.parseLong(string));
        loanFinance.setLastModifiedBy(user.getId());
        loanFinance.setIdEntityloan(Long.parseLong(string));
        loanFinance.setAmount(10000.00);
        loanFinance.setStatus("A"); 

        commonRepository.save(loanFinance);     
        System.out.println("Saved Datas");
    }

Answer 2

我相信您必须为迭代的每个字符串创建一个新的LoanFinance对象。

Answer 3

for (String string : loanIds) {  

    loanFinance = new LoanFinance(); // This should be in the loop too.
          
    loanFinance.setFundingBankId(bankId);
    loanFinance.setIdFundsProductPurpose(Long.valueOf(68449));
    loanFinance.setLoanId(Long.parseLong(string));
    loanFinance.setLastModifiedBy(user.getId());
    loanFinance.setIdEntityloan(Long.parseLong(string));
    loanFinance.setAmount(10000.00);
    loanFinance.setStatus("A"); 

    commonRepository.save(loanFinance);     
    System.out.println("Saved Datas");
}