jpa多表leftjoin 查詢，自定義返回結果

sql代碼

自定義返回結果

package com.cdp.ecosaas.coredb.uua.sync.vo;

import java.io.Serializable;

public class UuaUserNotifyTemp implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    
    private String id;

    private String sysCode;

    private String sysName;

    private String idNumber;

    private String email;

    private String phone;

    private String tenantId;

    private String isAuto;

    private String isEmail;

    private String isMobile;

    private String emailLang;

    private String msmLang;

    private String mailNotify;

    private String mobileNotify;

    private String state;


    public String getIdNumber() {
        return idNumber;
    }

    public void setIdNumber(String idNumber) {
        this.idNumber = idNumber;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getTenantId() {
        return tenantId;
    }

    public void setTenantId(String tenantId) {
        this.tenantId = tenantId;
    }

    public String getIsAuto() {
        return isAuto;
    }

    public void setIsAuto(String isAuto) {
        this.isAuto = isAuto;
    }

    public String getIsEmail() {
        return isEmail;
    }

    public void setIsEmail(String isEmail) {
        this.isEmail = isEmail;
    }

    public String getIsMobile() {
        return isMobile;
    }

    public void setIsMobile(String isMobile) {
        this.isMobile = isMobile;
    }

    public String getEmailLang() {
        return emailLang;
    }

    public void setEmailLang(String emailLang) {
        this.emailLang = emailLang;
    }

    public String getMsmLang() {
        return msmLang;
    }

    public void setMsmLang(String msmLang) {
        this.msmLang = msmLang;
    }

    public String getMailNotify() {
        return mailNotify;
    }

    public void setMailNotify(String mailNotify) {
        this.mailNotify = mailNotify;
    }

    public String getMobileNotify() {
        return mobileNotify;
    }

    public void setMobileNotify(String mobileNotify) {
        this.mobileNotify = mobileNotify;
    }

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }

    
    public String getSysCode() {
        return sysCode;
    }

    
    public void setSysCode(String sysCode) {
        this.sysCode = sysCode;
    }

    
    public String getSysName() {
        return sysName;
    }

    
    public void setSysName(String sysName) {
        this.sysName = sysName;
    }

    
    public String getId() {
        return id;
    }

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

    public UuaUserNotifyTemp(String id, String sysCode, String sysName, String idNumber, String email, String phone,
            String tenantId, String isAuto, String isEmail, String isMobile, String emailLang, String msmLang,
            String mailNotify, String mobileNotify, String state) {
        super();
        this.id = id;
        this.sysCode = sysCode;
        this.sysName = sysName;
        this.idNumber = idNumber;
        this.email = email;
        this.phone = phone;
        this.tenantId = tenantId;
        this.isAuto = isAuto;
        this.isEmail = isEmail;
        this.isMobile = isMobile;
        this.emailLang = emailLang;
        this.msmLang = msmLang;
        this.mailNotify = mailNotify;
        this.mobileNotify = mobileNotify;
        this.state = state;
    }

    
    

}

 

 

sql代碼

@Query(value = "SELECT new com.cdp.ecosaas.coredb.uua.sync.vo.UuaUserNotifyTemp(uu.id,ue.sysCode,ue.sysName,uu.idNumber,uu.email,uu.phone,ue.tenantId,unc.isAuto,unc.isEmail,unc.isMobile,unc.emailLang,unc.msmLang, uu.mailNotify, uu.mobileNotify, uu.state) FROM UuaUser uu LEFT JOIN UuaUserExtsysRef uuer on uu.id = uuer.id.userId LEFT JOIN UuaExtsy ue on ue.id = uuer.id.extsysId LEFT JOIN UuaNotifyConfig unc ON unc.tenantId = ue.tenantId where unc.isAuto = 1 and (uu.state = 0 or uu.state is null) and (uu.mailNotify = 0 or uu.mailNotify is null) and (uu.mobileNotify = 0 or uu.mobileNotify is null) ")
    List<UuaUserNotifyTemp> findNotifyUserTemp();

注意點 1先把原來sql寫好 保證能把執行，自定義返回結果只支持hql語句，不支持原生sql

2錶鏈接的時候注意使用的對象的屬性鏈接，好比屬性是id，數據庫字段是_id,這裏用的是id，若是sql能執行，hql也必定能執行

3注意使用高版本的hibernate  

<hibernate.version>5.2.12.Final</hibernate.version>

以前你們說的什麼hql leftjoin  不識別 on 是版本的問題

4自定義返回結果要跟hql寫的字段順序對應。

 

建議若是使用jpa 仍是推薦把表之間關聯關係維護好，不要走這用歪路子。特別是加載策略以及級聯關係。不要都扔一個all就完事了