Question

我是JPA的新手。需要将数据插入两个数据库表（两个表不同，这意味着没有外键关系）。我正在使用POSTMAN从URL和有效负载主体部分发送json数据。下面显示了两个实体类。

USERREDIRECT.JAVA `

import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Cacheable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.QueryHint;
import javax.persistence.Table;

import org.codehaus.jackson.annotate.JsonProperty;

@Entity
@Cacheable(false)
@NamedQueries({
    @NamedQuery(name = "getuserRedirectById", query = "SELECT a FROM userRedirect a WHERE a.redirectId=:redirectId", hints = @QueryHint(name = "eclipselink.refresh", value = "true"))
    ,
    @NamedQuery(name = "getAlluserRedirect", query = "SELECT a FROM userRedirect a order by a.redirectId", hints = @QueryHint(name = "eclipselink.refresh", value = "true"))})

@Table(name = "userRedirect")
public class userRedirect {

    @Id
    @Column(name = "redirect_id")
    @JsonProperty("redirect_id")
    private String redirectId;

    @Column(name = "loop_ind")
    @JsonProperty("loop_ind")
    private String loopInd;

    @OneToMany(mappedBy = "userRedirectEntity", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    private List<userRedirectRicTgrpDetails> userRedirectRicTgrpDetailsList;

    public userRedirect() {

    }

    public String getLoopInd() {
        return loopInd;
    }

    public void setLoopInd(String loopInd) {
        this.loopInd = loopInd;
    }

    public List<userRedirectRicTgrpDetails> getuserRedirectRicTgrpDetailsList() {
        return userRedirectRicTgrpDetailsList;
    }

    public void setuserRedirectRicTgrpDetailsList(List<userRedirectRicTgrpDetails> userRedirectRicTgrpDetailsList) {
        this.userRedirectRicTgrpDetailsList = userRedirectRicTgrpDetailsList;
    }

    /**
     * @return the redirectId
     */
    public String getRedirectId() {
        return redirectId;
    }

    /**
     * @param redirectId the redirectId to set
     */
    public void setRedirectId(String redirectId) {
        this.redirectId = redirectId;
    }

    @Override
    public String toString() {
        return "userRedirect :: RedirectId: " + redirectId + ", LoopInd : "
                + loopInd + ", Ric_Tgrp Details : " + userRedirectRicTgrpDetailsList;
    }

}

userRedirectRicTgrpDetails.java

import javax.persistence.Cacheable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.QueryHint;
import javax.persistence.Table;

import org.codehaus.jackson.annotate.JsonProperty;

@Entity
@Cacheable(false)
@NamedQueries({
    @NamedQuery(name = "getuserRedirectDetailsById", query = "SELECT a FROM userRedirectRicTgrpDetails a WHERE a.userRedirectEntity.redirectId=:redirectId ORDER BY a.priority", hints = @QueryHint(name = "eclipselink.refresh", value = "true"))
    ,
@NamedQuery(name = "getAlluserRedirectDetails", query = "SELECT a FROM userRedirectRicTgrpDetails a ORDER BY a.priority", hints = @QueryHint(name = "eclipselink.refresh", value = "true"))})

@Table(name = "userRedirect_ric_tgrp_details")
public class userRedirectRicTgrpDetails {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "row_id")
    private int id;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "redirect_id")
    private userRedirect userRedirectEntity;

    @Column(name = "ric")
    @JsonProperty("ric")
    private String ric;

    @Column(name = "tgrp")
    @JsonProperty("tgrp")
    private String tgrp;

    @Column(name = "priority")
    @JsonProperty("priority")
    private int priority;

    public userRedirectRicTgrpDetails() {

    }

    public userRedirect getuserRedirect() {
        return userRedirectEntity;
    }

    public void setuserRedirect(userRedirect userRedirect) {
        this.userRedirectEntity = userRedirect;
    }

    /**
     * @return the ric
     */
    public String getRic() {
        return ric;
    }

    /**
     * @param ric the ric to set
     */
    public void setRic(String ric) {
        this.ric = ric;
    }

    /**
     * @return the tgrp
     */
    public String getTgrp() {
        return tgrp;
    }

    /**
     * @param tgrp the tgrp to set
     */
    public void setTgrp(String tgrp) {
        this.tgrp = tgrp;
    }

    public int getId() {
        return id;
    }

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

    public int getPriority() {
        return priority;
    }

    public void setPriority(int priority) {
        this.priority = priority;
    }

    @Override
    public String toString() {
        return "userRedirectRicTgrpDetails ::RowId : " + id + ", RedirectId : " + userRedirectEntity.getRedirectId() + ", Ric : " + ric + ", Tgrp : " + tgrp
                + ", Priority : " + priority;
    }

}

例外：

SEVERE: Unexpected error while creating new RedirectGroup  Exception =
    java.lang.IllegalArgumentException: Object: callRedirect :: RedirectId: 1000, Lo
    opInd : ORIG, Ric_Tgrp Details : [callRedirectRicTgrpDetails ::RowId : 0, Redire
    ctId : 1000, Ric : RICXXX3, Tgrp : TGRPXXXX3, Priority : 1] is not a known entit
    y type.
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewO
    bjectForPersist(UnitOfWorkImpl.java:4184)
    at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(Entity
    ManagerImpl.java:368)

数据库架构：

CREATE TABLE IF NOT EXISTS `userRedirect` (
`redirect_id` varchar(20) NOT NULL,
`loop_ind` varchar(4) NOT NULL,
PRIMARY KEY (`redirect_id`)
);

CREATE TABLE IF NOT EXISTS `userRedirect_ric_tgrp_details` (
`row_id` int(4) AUTO_INCREMENT,
`redirect_id` varchar(20) NOT NULL,
`ric` varchar(20) NOT NULL,
`tgrp` varchar (20) NOT NULL,
`priority` int NOT NULL,
PRIMARY KEY (`row_id`)
);

JSON INPUT：

{
   "loop_ind": "ORIG",
   "callRedirectRicTgrpDetailsList": [{
        "ric": "RICXXX3",
        "tgrp": "TGRPXXXX3",
         "priority": 1
    }]
}

并且从URL

提供redirect_id

的persistence.xml：

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="1.0">
<persistence-unit name="TEST_CALLREDIRECT_PERSISTENCE"  transaction-type="RESOURCE_LOCAL">
<class>com.mypackage.userRedirect</class>
<class>com.mypackage.userRedirectRicTgrpDetails</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>      
<properties>
<property name="javax.persistence.jdbc.driver"   value="com.mysql.jdbc.Driver" />
<property name="javax.persistence.jdbc.url"      value="jdbc:mysql://127.0.0.1:3306/CallRedirect" />
<property name="javax.persistence.jdbc.user"     value="root" />
<property name="javax.persistence.jdbc.password" value="password" />
</properties>   
</persistence-unit>
</persistence>

DAO.Class：

    public userRedirect createNewuserRedirect(userRedirect userRedirect){
    try {
        System.out.println("inside dao.....");
        LOGGER.fine("createNewRedirectGroup method invoked in dao with userRedirect : " + userRedirect);
        entityManager.getTransaction().begin();
        entityManager.persist(userRedirect);
        entityManager.getTransaction().commit();
        return userRedirect;
    } catch (Exception e) {
        System.out.println(e);
    }
}

一对多映射与列表结果非法参数异常不是已知实体

0 个答案: