JDBI 的@BindBean 在 INSERT 期间未在 bean class 中找到命名参数

Question

在使用 JDBI 的 @BindBean 将值插入我在 Dropwizard 中的 Mysql 数据库时，我一直收到以下异常。问题似乎是 JDBI 无法在 bean 中找到属性。我已经将问题隔离到一个单独的项目中，但无法弄清楚哪里出了问题。如果能给我一些建议，我将不胜感激。

org.skife.jdbi.v2.exceptions.UnableToExecuteStatementException: Unable to execute, no named parameter matches "title" and no positional param for place 0 (which is 1 in the JDBC 'start at 1' scheme) has been set. [statement:"INSERT INTO `car_tbl`(`title`, `teaser`, `ext_description`, `create_date`, `teaser_image_url`, `teaser_image_color`) VALUES ( :title, :teaser, :extDescription, unix_timestamp(), :teaserImageUrl, :teaserImageColor)", located:"INSERT INTO `car_tbl`(`title`, `teaser`, `ext_description`, `create_date`, `teaser_image_url`, `teaser_image_color`) VALUES ( :title, :teaser, :extDescription, unix_timestamp(), :teaserImageUrl, :teaserImageColor)", rewritten:"/* CarDAO.createCar2 */ INSERT INTO `car_tbl`(`title`, `teaser`, `ext_description`, `create_date`, `teaser_image_url`, `teaser_image_color`) VALUES ( ?, ?, ?, unix_timestamp(), ?, ?)", arguments:{ positional:{}, named:{class:class com.javaeeeee.dwstart.db.Car}, finder:[]}]

    at org.skife.jdbi.v2.ColonPrefixNamedParamStatementRewriter$MyRewrittenStatement.bind(ColonPrefixNamedParamStatementRewriter.java:158)
    at org.skife.jdbi.v2.SQLStatement.internalExecute(SQLStatement.java:1318)
    at org.skife.jdbi.v2.Update.executeAndReturnGeneratedKeys(Update.java:78)
    at org.skife.jdbi.v2.sqlobject.UpdateHandler.value(UpdateHandler.java:51)
    at org.skife.jdbi.v2.sqlobject.UpdateHandler.invoke(UpdateHandler.java:75)
    at org.skife.jdbi.v2.sqlobject.SqlObject.invoke(SqlObject.java:175)
    at org.skife.jdbi.v2.sqlobject.SqlObject.intercept(SqlObject.java:75)
    at org.skife.jdbi.v2.sqlobject.CloseInternalDoNotUseThisClass$$EnhancerByCGLIB$f365cd7.createCar2(<generated>)
    at com.javaeeeee.dwstart.db.TestDatabase.testCreatecar2(TestDatabase.java:60)

这是我的值对象

public class Car {
    public Long carId;
    public String title;
    public String teaser;
    public String teaserImageUrl;
    public String teaserImageColor;
    public String extDescription;
    public Long createDate;
}

并且我创建了以下 DAO 来使用 http://jdbi.org/sql_object_api_argument_binding/ 中描述的 @BindBean 功能 - 两种插入方法都失败了。

package com.javaeeeee.dwstart.db.dao;

import com.javaeeeee.dwstart.db.Car;
import org.skife.jdbi.v2.sqlobject.BindBean;
import org.skife.jdbi.v2.sqlobject.GetGeneratedKeys;
import org.skife.jdbi.v2.sqlobject.SqlUpdate;

public interface CarDAO {
    @GetGeneratedKeys
    @SqlUpdate("INSERT INTO `car_tbl`(`title`, `teaser`, `ext_description`, " +
            "`create_date`, `teaser_image_url`, `teaser_image_color`) " +
            "VALUES ( :c.title, :c.teaser, :c.extDescription, unix_timestamp(), " +
            ":c.teaserImageUrl, :c.teaserImageColor)")
    Long createCar(@BindBean("c") Car car);

    @GetGeneratedKeys
    @SqlUpdate("INSERT INTO `car_tbl`(`title`, `teaser`, `ext_description`, " +
            "`create_date`, `teaser_image_url`, `teaser_image_color`) " +
            "VALUES ( :title, :teaser, :extDescription, unix_timestamp(), " +
            ":teaserImageUrl, :teaserImageColor)")
    Long createCar2(@BindBean Car car);
}

这是我的 table 定义。

CREATE TABLE IF NOT EXISTS `cardb`.`car_tbl` (
  `car_id` INT NOT NULL AUTO_INCREMENT COMMENT '',
  `title` VARCHAR(255) NOT NULL COMMENT '',
  `teaser` VARCHAR(2048) NULL COMMENT '',
  `ext_description` VARCHAR(4096) NULL COMMENT '',
  `create_date` BIGINT(20) NOT NULL DEFAULT 0 COMMENT '',
  `teaser_image_url` VARCHAR(2048) NULL COMMENT '',
  `teaser_image_color` VARCHAR(8) NULL COMMENT '',
  PRIMARY KEY (`car_id`)  COMMENT '',
  INDEX `idx_create_date` USING BTREE (`create_date` ASC)  COMMENT '')
  ENGINE = InnoDB;

我正在使用以下 JUnit 集成测试来重现错误：

public class TestDatabase {
    private DBI dbi;
    private Handle handle;
    private CarDAO carDAO;

    @Before
    public void setUpDatabase() throws Exception {
        Environment environment = new Environment( "test-env", Jackson.newObjectMapper(), null, new MetricRegistry(), null );
        dbi = new DBIFactory().build( environment, getDataSourceFactory(), "cardb" );
        carDAO = dbi.onDemand(CarDAO.class);
        handle = dbi.open();
    }

    protected DataSourceFactory getDataSourceFactory()
    {
        DataSourceFactory dataSourceFactory = new DataSourceFactory();
        dataSourceFactory.setDriverClass( "com.mysql.jdbc.Driver" );
        dataSourceFactory.setUrl( "jdbc:mysql://127.0.0.1:3306/cardb" );
        dataSourceFactory.setUser( "root" );
        dataSourceFactory.setPassword( "root" );
        return dataSourceFactory;
    }

    @Test
    public void testCreatecar(){
        Car car = new Car("Test car","Test car teaser","http://localhost:8080/","#ff0000","car test description");
        Long carId = carDAO.createCar(car);
        assertNotNull(carId);
    }

    @Test
    public void testCreatecar2(){
        Car car = new Car("Test car","Test car teaser","http://localhost:8080/","#ff0000","car test description");
        Long carId = carDAO.createCar2(car);
        assertNotNull(carId);
    }
}

我正在使用 Java 1.8.0_05、Dropwizard 0.9.2 和 MySQL 5.7.9.

Answer 1

BindBean 声称可以与 JavaBeans 一起使用。 JavaBeans 需要 getter 和 setter。

请为您的汽车添加 getter 和设置器 class。

Answer 2

我遇到了以下问题：

    UnableToCreateStatementException, message: Missing named parameter 'isFavorite'.

那是因为我的 getter 只是：

    public boolean isFavorite() {
            return this.isFavorite
    }

然后我将其更改为 getIsFavorite() 并且成功了。注意这个getter必须是public.

JDBI 的@BindBean 在 INSERT 期间未在 bean class 中找到命名参数

JDBI's @BindBean doesn't find named parameters in bean class during INSERT

java

mysql

dropwizard

jdbi