JDBC/SQL - ID 始终为 0

Question

所以我正在尝试向我的会员中插入一个硬编码会员 table。我在 Eclipse 上使用 Spring Boot & JDBC。

这是我的 schema.sql:

CREATE TABLE Members 
(
    ID int not null,
    LastName varchar(255) not null,
    FirstName varchar(255) not null,
    PhoneNumber integer not null,
    created timestamp not null,
    primary key(ID)
);

INSERT INTO MEMBERS (ID, LASTNAME, FIRSTNAME,PHONENUMBER, CREATED)
VALUES(1001, 'Max', 'Mad', 0547547547, sysdate());

我在 DAO 中得到了一个 findAll 方法 class:

public List<Member> findAll(){
        return jtemp.query("select * from members", new BeanPropertyRowMapper<Member>(Member.class));
}

当我运行它时，它returns:

[Member [id=0, firstName=Mad, lastName=Max, phoneNumber=547547547, created=2017-10-31 18:57:21.606]]

如您所见，由于某种原因未插入 ID。

我的会员class是这样的：

public class Member {

    private long id;
    private String firstName;
    private String lastName;
    private long phoneNumber;
    private Date created;
    public Member(long id, String firstName, String lastName, long phoneNumber, Date created) {
        super();
        this.id = id;
        this.firstName = firstName;
        this.lastName = lastName;
        this.phoneNumber = phoneNumber;
        this.created = created;
    }

    public long getUserId() {
        return id;
    }
    public void setUserId(long userId) {
        this.id = userId;
    }
    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    public long getPhoneNumber() {
        return phoneNumber;
    }
    public void setPhoneNumber(long phoneNumber) {
        this.phoneNumber = phoneNumber;
    }
    public Date getCreated() {
        return created;
    }
    public void setCreated(Date created) {
        this.created = created;
    }

    @Override
    public String toString() {
        return "Member [id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + ", phoneNumber="
                + phoneNumber + ", created=" + created + "]";
    }


}

我该如何解决？我尝试插入不同的数字，但我总是在日志中得到一个零。

谢谢

Answer 1

查询的列名必须与目标对象中的设置器相匹配。

您的查询有一个名为 id 的列，但没有 setId 方法。您应该将 setUserId 重命名为 setId 或在查询中为 id 列提供别名 user_id。

来自BeanPropertyRowMapper documentation:

Column values are mapped based on matching the column name as obtained from result set metadata to public setters for the corresponding properties. The names are matched either directly or by transforming a name separating the parts with underscores to the same name using "camel" case.

JDBC/SQL - ID 始终为 0

JDBC/SQL - ID is always 0

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