Question

以下测试用例（假设密码正确）

<?php
    require_once "vendor/autoload.php";
    use GraphAware\Neo4j\Client\ClientBuilder;
    $client = ClientBuilder :: create() -> addConnection("default", "http://neo4j:Password@localhost:7474") -> build();
    $query  = "MATCH (u:User)
               RETURN u";
    $result = $client -> run($query);
    $user = $result -> firstRecord() -> values()[0];
?>

给我以下错误：

PHP Fatal error:  Uncaught GuzzleHttp\\Exception\\ClientException: Client error: `POST http://neo4j:***@localhost:7474/db/data/transaction/commit` resulted in a `400 Bad Content-Type header value: ''` response in /var/www/html/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php:113
Stack trace:
#0 /var/www/html/vendor/guzzlehttp/guzzle/src/Middleware.php(66): GuzzleHttp\\Exception\\RequestException::create(Object(GuzzleHttp\\Psr7\\Request), Object(GuzzleHttp\\Psr7\\Response))
#1 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(203): GuzzleHttp\\Middleware::GuzzleHttp\\{closure}(Object(GuzzleHttp\\Psr7\\Response))
#2 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(156): GuzzleHttp\\Promise\\Promise::callHandler(1, Object(GuzzleHttp\\Psr7\\Response), Array)
#3 /var/www/html/vendor/guzzlehttp/promises/src/TaskQueue.php(47): GuzzleHttp\\Promise\\Promise::GuzzleHttp\\Promise\\{closure}()
#4 /var/www/html/vendor/guzzlehttp/promises/src/Promise.php(246): GuzzleHttp\\Promise\\TaskQueue->run(true)
#5 /var/www/html/vendor/guzzlehttp/ in /var/www/html/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php on line 113, referer: http://localhost/

当我var_dump它时，这是$ client：

object(GraphAware\Neo4j\Client\Client)#7 (2) {
  ["connectionManager":protected]=>
  object(GraphAware\Neo4j\Client\Connection\ConnectionManager)#2 (2) {
    ["connections":"GraphAware\Neo4j\Client\Connection\ConnectionManager":private]=>
    array(1) {
      ["default"]=>
      object(GraphAware\Neo4j\Client\Connection\Connection)#4 (5) {
        ["alias":"GraphAware\Neo4j\Client\Connection\Connection":private]=>
        string(7) "default"
        ["uri":"GraphAware\Neo4j\Client\Connection\Connection":private]=>
        string(38) "http://neo4j:Password@localhost:7474"
        ["driver":"GraphAware\Neo4j\Client\Connection\Connection":private]=>
        object(GraphAware\Neo4j\Client\HttpDriver\Driver)#6 (2) {
          ["uri":protected]=>
          string(38) "http://neo4j:Password@localhost:7474"
          ["config":protected]=>
          object(GraphAware\Neo4j\Client\HttpDriver\Configuration)#5 (1) {
            ["timeout":protected]=>
            int(5)
          }
        }
        ["session":"GraphAware\Neo4j\Client\Connection\Connection":private]=>
        NULL
        ["timeout":"GraphAware\Neo4j\Client\Connection\Connection":private]=>
        int(5)
      }
    }
    ["master":"GraphAware\Neo4j\Client\Connection\ConnectionManager":private]=>
    NULL
  }
  ["eventDispatcher":protected]=>
  object(Symfony\Component\EventDispatcher\EventDispatcher)#8 (2) {
    ["listeners":"Symfony\Component\EventDispatcher\EventDispatcher":private]=>
    array(0) {
    }
    ["sorted":"Symfony\Component\EventDispatcher\EventDispatcher":private]=>
    array(0) {
    }
  }
}

我不知道该怎么解释或出了什么问题。

我的数据库在neo4j浏览器客户端中正常运行。
据我所知，graphaware已按照网站上的说明。
我已经测试过，并且在运行查询时发生了错误，不是在创建客户端时（即使这不是错误明确指出）。
如果我将查询直接复制/粘贴到neo4j浏览器客户端中然后它会按预期工作。

知道为什么我会收到此错误吗？

Answer 1

根据GraphAware PHP Client，您似乎未使用最新版本，因此您需要更新，请 OR ，您点击了the empty array bug（例如，您的问题是您没有不会发送 Content-Type：application / json ，似乎只使用 GraphAware \ Neo4j \ Client \ HttpDriver \ Session 中的函数 prepareRequest 进行设置>）。另外，请查看您的查询语法，因为对于Neo4j，Install instructions和the developer documentation中似乎已弃用了该语法。

Answer 2

我面临着同样的问题，就我而言，解决方案是将PHP从7.1降级到7.0。这应该可以帮助您。

Answer 3

请安装php-curl模块并尝试，它应该可以工作。

在这里讨论：https://github.com/graphaware/neo4j-php-client/issues/142#issuecomment-558857861

Neo4j PHP Graphaware'400 Bad Content-Type header'错误

3 个答案: