Symfony2 doctrine2插入记录[语义错误]注释

Question

尝试将记录插入原则时，记录正在插入，但出现错误：

[语义错误]属性C2Educate \\ ToolsBundle \\ Entity \\ StudentScores :: $ id中的注释“ @Expose”从未导入。 您是否可能忘了为此注释添加“ use”语句？ （500内部服务器错误）

实体 ：

<?php

namespace C2Educate\ToolsBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use JMS\SerializerBundle\Annotation\Type;

/**
* C2Educate\ToolsBundle\Entity\StudentScores
*
* @ORM\Table(name="tbl_student_scores")
* @ORM\Entity
*/
class StudentScores {

/**
 * @var integer $id
 *
 * @ORM\Column(name="id", type="integer", nullable=false)
 * @ORM\GeneratedValue(strategy="SEQUENCE")
 * @ORM\SequenceGenerator(sequenceName="tbl_student_scores_id_seq", allocationSize="1", initialValue="1")
 * @Expose
 * @Type("integer")
 */
protected $id;

/**
 * @var integer $studentId
 *
 * @ORM\Column(name="student_id", type="integer", nullable=true)
 * @Assert\NotBlank()
 * @Type("integer")
 */
private $studentId;


/**
 * Get id
 *
 * @return integer
 */
public function getId() {
    return $this->id;
}


   /**
 * Set studentId
 *
 * @param string $studentId
 */
public function setStudentId($studentId) {
    $this->studentId = $studentId;
}

/**
 * Get studentId
 *
 * @return string
 */
public function getStudentId() {
    return $this->studentId;
}
}

控制器脚本：

$em = $this->getDoctrine()->getEntityManager();
$sc = new StudentScores();
$sc->setScore((!empty($test->composite) ? $test->composite : 0));
$sc->setTestDate($test->test_date);
$sc->setcreatedBy($loggedinUser);
$sc->setCreatedAt($date);
$sc->setupdatedBy($loggedinUser);
$sc->setUpdatedAt($date);
$sc->setStudentId($returnID);
$em->persist($sc);
$em->flush();

Answer 1

您忘记了添加错误声明中所述的use语句。 尝试这个

use JMS\Serializer\Annotation\ExclusionPolicy;
use JMS\Serializer\Annotation\Expose;