java - Spring Boot Jpa 更新记录而不是插入

Question

我正在执行以下查询来查找临时表中但主表中不存在的记录，然后将结果插入主表

@Query(value = "select b from InboundTemp b where b.transactionId NOT IN (SELECT p2.transactionId FROM Inbound p2)")
ArrayList<InboundTemp> findMissing();

但是，如果我将单个结果对象传递给 JpaRepository 保存方法(为了更新主表)，它会执行更新而不是插入。我会做错什么吗？

import java.io.Serializable;
import javax.persistence.*;
import java.util.Date;


    @Entity
    @Table(name="inbound_postpay_temp")
    @NamedQuery(name="InboundPostpayTemp.findAll", query="SELECT i FROM InboundPostpayTemp i")
    public class InboundPostpayTemp implements Serializable {
        private static final long serialVersionUID = 1L;

        @Id
        @GeneratedValue(strategy= GenerationType.AUTO)
        private int id;

        @Column(name="bill_ref_no")
        private String billRefNo;

        @Column(name="business_shortcode")
        private String businessShortcode;

        private byte clicked;

        @Temporal(TemporalType.TIMESTAMP)
        @Column(name="created_at")
        private Date createdAt;

        private String kpresponse;

        private String KPtransaction_id;

        @Column(name="mpesa_sender")
        private String mpesaSender;

        private String msisdn;

        @Column(name="Network")
        private String network;

        @Column(name="org_account_balance")
        private float orgAccountBalance;

        private String status;

        @Column(name="transaction_amount")
        private float transactionAmount;

        @Column(name="transaction_id")
        private String transactionId;

        @Column(name="transaction_time")
        private String transactionTime;

        @Column(name="transaction_type")
        private String transactionType;

        @Temporal(TemporalType.TIMESTAMP)
        @Column(name="updated_at")
        private Date updatedAt;

        public InboundPostpayTemp() {
        }

        public int getId() {
            return this.id;
        }

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

        public String getBillRefNo() {
            return this.billRefNo;
        }

        public void setBillRefNo(String billRefNo) {
            this.billRefNo = billRefNo;
        }

        public String getBusinessShortcode() {
            return this.businessShortcode;
        }

        public void setBusinessShortcode(String businessShortcode) {
            this.businessShortcode = businessShortcode;
        }

        public byte getClicked() {
            return this.clicked;
        }

        public void setClicked(byte clicked) {
            this.clicked = clicked;
        }

        public Date getCreatedAt() {
            return this.createdAt;
        }

        public void setCreatedAt(Date createdAt) {
            this.createdAt = createdAt;
        }

        public String getKpresponse() {
            return this.kpresponse;
        }

        public void setKpresponse(String kpresponse) {
            this.kpresponse = kpresponse;
        }

        public String getKPtransaction_id() {
            return this.KPtransaction_id;
        }

        public void setKPtransaction_id(String KPtransaction_id) {
            this.KPtransaction_id = KPtransaction_id;
        }

        public String getMpesaSender() {
            return this.mpesaSender;
        }

        public void setMpesaSender(String mpesaSender) {
            this.mpesaSender = mpesaSender;
        }

        public String getMsisdn() {
            return this.msisdn;
        }

        public void setMsisdn(String msisdn) {
            this.msisdn = msisdn;
        }

        public String getNetwork() {
            return this.network;
        }

        public void setNetwork(String network) {
            this.network = network;
        }

        public float getOrgAccountBalance() {
            return this.orgAccountBalance;
        }

        public void setOrgAccountBalance(float orgAccountBalance) {
            this.orgAccountBalance = orgAccountBalance;
        }

        public String getStatus() {
            return this.status;
        }

        public void setStatus(String status) {
            this.status = status;
        }

        public float getTransactionAmount() {
            return this.transactionAmount;
        }

        public void setTransactionAmount(float transactionAmount) {
            this.transactionAmount = transactionAmount;
        }

        public String getTransactionId() {
            return this.transactionId;
        }

        public void setTransactionId(String transactionId) {
            this.transactionId = transactionId;
        }

        public String getTransactionTime() {
            return this.transactionTime;
        }

        public void setTransactionTime(String transactionTime) {
            this.transactionTime = transactionTime;
        }

        public String getTransactionType() {
            return this.transactionType;
        }

        public void setTransactionType(String transactionType) {
            this.transactionType = transactionType;
        }

        public Date getUpdatedAt() {
            return this.updatedAt;
        }

        public void setUpdatedAt(Date updatedAt) {
            this.updatedAt = updatedAt;
        }

    }

大师类是一样的

下面是坚持到dB的方法

missing = temprepo.findMissing();





    for (InboundPostpayTemp inboundPostpayTemp2 : missing) {

                        postpaytransaction.setBillRefNo(inboundPostpayTemp2.getBillRefNo());
                        postpaytransaction.setBusinessShortcode("");
                        // postpaytransaction.setClicked("0".t);
                        postpaytransaction
                                .setCreatedAt(new java.sql.Timestamp(inboundPostpayTemp2.getCreatedAt().getTime()));
                        postpaytransaction.setMpesaSender(inboundPostpayTemp2.getMpesaSender());
                        postpaytransaction.setMsisdn(inboundPostpayTemp2.getMsisdn());
                        postpaytransaction.setTransactionAmount(inboundPostpayTemp2.getTransactionAmount());
                        postpaytransaction.setTransactionId(inboundPostpayTemp2.getTransactionId());
                        postpaytransaction.setTransactionType("Paybill-Repost");
                        postpaytransaction.setStatus("CONFIRMED");
                        postpaytransaction.setTransactionTime(inboundPostpayTemp2.getTransactionTime());

                        //postpaytransactionx.add(postpaytransaction);

                        inboundpostpayrepo.save(postpaytransaction);
                    }

Answer 1

JPA 执行更新而不是插入的唯一原因是主键已存在于您的持久层或表中。因此，请检查或发布您的源代码，以便查看它并找出问题所在(如果问题不在您的数据中)。

现在您已经使用源代码更新了问题，您的错误可能出在 postpaytransaction 对象的实例化上。

尝试在其他所有内容之前插入循环

postpaytransaction = new PostPayTransaction()