我已使用 JPA/Hibernate 將數(shù)據(jù)庫(kù)連接到我的主 Java 應(yīng)用程序。我可以通過(guò) Spring boot 項(xiàng)目在 Microsoft SQL 表中添加/刪除項(xiàng)目。盡管當(dāng)需要查看表中的所有內(nèi)容時(shí)，我收到錯(cuò)誤。我在下面附加了一些與該項(xiàng)目相關(guān)的更多代碼。實(shí)體類：import javax.persistence.*;@Entity@Table(name = "taddm")public class AVSApplication {    @Id    @Column(name = "appcode")    private String mAppCode;    @Column(name = "acro")    private String mAcronym;    @Column(name = "appname")    private String mAppName;    //Constructor    public AVSApplication(String mAppCode, String mAcronym, String mAppName) {        super();        this.mAppCode = mAppCode;        this.mAcronym = mAcronym;        this.mAppName = mAppName;    }    //Default Constructor    public AVSApplication () {    }    //Getters    public String getmAppCode() {        return mAppCode;    }    public String getmAcronym() {        return mAcronym;    }    public String getmAppName() {        return mAppName;    }    //Setters    public void setmAcronym(String mAcronym) {        this.mAcronym = mAcronym;    }    public void setmAppCode(String mAppCode) {        this.mAppCode = mAppCode;    }    public void setmAppName(String mAppName) {        this.mAppName = mAppName;    }}控制器：//Select        @GetMapping("/select-me")        public String selectApplication() {            System.out.println(mAppRepo.findAll());            System.out.println(mAppRepo.findById("3A0"));           return "tier";        }錯(cuò)誤：Hibernate: select avsapplica0_.appcode as appcode1_0_, avsapplica0_.acro as acro2_0_, avsapplica0_.appname as appname3_0_ from taddm avsapplica0_[]Hibernate: select avsapplica0_.appcode as appcode1_0_0_, avsapplica0_.acro as acro2_0_0_, avsapplica0_.appname as appname3_0_0_ from taddm avsapplica0_ where avsapplica0_.appcode=?Optional.empty回購(gòu)協(xié)議：@Repositorypublic interface AppRepository extends JpaRepository<AVSApplication, String>{     @Override     List<AVSApplication> findAll();}表名稱：appcode (primary key)acroappname