400 Bad Request Symfony 3 with Angular-Java 学习之路

我想知道我做错了什么 . 我收到了400个错误的请求，试图通过角度服务发送帖子请求 . 我有2个实体 - Document和DocumentCategory（多对多关系） . 我可以发布文档本身（没有类别）没有问题 .

document-create.component.ts

createDocument(title, body, categories) {
    let document = {title: title, body: body, categories: categories};
    this._crudService.createDocument(document).subscribe(
        data => {
            return true;
        },
        error => {
            console.error("Error saving document! " + error);
            return Observable.throw(error);
        }
    );
}

crudService.ts

createDocument(document) {
    let headers = new Headers({'Content-Type': 'application/json'});
    let options = new RequestOptions({headers: headers});
    //let body = JSON.stringify(document);
    let body = document;
    return this.http.post
        ('http://localhost:8000/documents', body, headers);
}

The form

public function buildForm(FormBuilderInterface $builder, array $options) {
    $builder
            ->add('title', TextType::class)
            ->add('body', TextType::class)
            //->add('categories', TextType::class)
            ->add('categories', EntityType::class, array(
                'class' => 'AppBundle:DocumentCategory',
                'multiple' => true,
                'expanded' => true,
                'by_reference' => false,
                'choice_label' => 'id',
            ))
    ;
}

Document.php

/**
 * @ORM\ManyToMany(targetEntity="DocumentCategory", mappedBy="documents") 
 * @JMSSerializer\Expose
 */
private $categories;

DocumentCategory.php

/**
 * @ORM\ManyToMany(targetEntity="Document", inversedBy="categories")
 * @ORM\JoinTable(name="document_category_document")
 * @JMSSerializer\Expose
 */
private $documents;

Request

POST / documents HTTP / 1.1 Accept：application / json，text / plain，/ Accept-Encoding：gzip，deflate，br Accept-Language：en-US，en; q = 0.8 Connection：keep-alive Content-Length：213 Content -Type：application / json主机：localhost：8000来源：http://localhost:4200 Referer：http://localhost:4200/admin/document/create User-Agent：Mozilla / 5.0（X11; Linux x86_64）AppleWebKit / 537.36（KHTML，如Gecko）Chrome / 55.0.2883.87 Safari / 537.36 X-Php -Ob-Level：1

{
  "title": "t",
  "body": "<p>b</p>",
  "categories": [
    {
      "id": 1,
      "name": "cat1",
      "documents": []
    },
    {
      "id": 2,
      "name": "cat2",
      "documents": []
    }
  ]
}

正如我所说，如果我删除类别，一切正常 . 我无法弄清楚:(

编辑：当我尝试发送上面的json作为application / json时，Postman显示此响应：

{
  "children": {
    "title": {},
    "body": {},
    "categories": {
      "errors": [
        "This value is not valid."
      ],
      "children": {
        "1": {},
        "2": {},
        "3": {},
        "4": {}
      }
    }
  }
}

1 回答

经过一段时间后，我终于成功了 . 这是我的结果，以防有人出现类似问题 . 这不是最优雅的解决方案，我会尝试找到一个更好的解决方案，但至少它是有效的 . 问题出在控制器上 . 现在post方法看起来像这样：

public function postAction(Request $request) { 
    $form = $this->createForm(DocumentType::class, null, [
        'csrf_protection' => false,
    ]);
    $form->submit($request->request->all());
    if (!$form->isValid()) {
        return $form;
    }

    $em = $this->getDoctrine()->getManager();
    $document = $form->getData();
    $categories = $request->request->get('categories'); 

    foreach ($categories as $categoryId) {
        $category = $em->getRepository('AppBundle:DocumentCategory')->find((int)$categoryId['id']);
        $category->addDocument($document);
        $document->addCategory($category);
        $em->persist($category);            
    }

    $em->persist($document);
    $em->flush();

    $routeOptions = [
        'id' => $document->getId(),
        '_format' => $request->get('_format'),
    ];

    return $this->routeRedirectView('get_document', $routeOptions, Response::HTTP_CREATED);
}

我的表格很简单：

public function buildForm(FormBuilderInterface $builder, array $options) {
    $builder
            ->add('title', TextType::class)
            ->add('body', TextType::class)
    ;         
}

回复于 2024-04-20T11:12:55+08:00

400 Bad Request Symfony 3 with Angular

1 回答

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