java - 在插入过程中，JDBI的@BindBean在Bean类中找不到命名参数

当使用JDBI的@BindBean将值插入Dropwizard的Mysql数据库中时，在下面始终出现以下异常。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，但无法弄清楚这是哪里出了问题。我将非常感谢您的一些建议。

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$1.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$1.intercept(SqlObject.java:75)
    at org.skife.jdbi.v2.sqlobject.CloseInternalDoNotUseThisClass$$EnhancerByCGLIB$$8f365cd7.createCar2(<generated>)
    at com.javaeeeee.dwstart.db.TestDatabase.testCreatecar2(TestDatabase.java:60)

这是我的价值对象

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以使用http://jdbi.org/sql_object_api_argument_binding/中所述的@BindBean功能-两种插入方法均失败。

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);
}

这是我的表定义。

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集成测试来重新创建错误:

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。

最佳答案

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

请在汽车 class 中添加获取器和设置器。