致命错误：消息为“无法检索服务器信息[401]”的未捕获异常“ Everyman \\ Neo4j \\ Exception”：

Question

I just installed neo4j server in Windows and am trying to connect with php. I have xampp running, installed neo4jphp with composer, and then tried to check the connection using the following script:

<?php
    require('vendor/autoload.php');


    $client = new Everyman\Neo4j\Client('localhost', 7474);
    print_r($client->getServerInfo());
?>

Now, instead of showing server status, a fatal error occured like this:

Fatal error: Uncaught exception 'Everyman\\Neo4j\\Exception' with message 'Unable to retrieve server info [401]: Headers: Array ( [Date] => Wed, 27 May 2015 10:54:01 GMT [Content-Type] => application/json; charset=UTF-8 [WWW-Authenticate] => None [Content-Length] => 144 [Server] => Jetty(9.2.z-SNAPSHOT) ) Body: Array ( [errors] => Array ( [0] => Array ( [message] => No authorization header supplied. [code] => Neo.ClientError.Security.AuthorizationFailed ) ) ) ' in C:\\xampp\\htdocs\\neo4j\\vendor\\everyman\\neo4jphp\\lib\\Everyman\\Neo4j\\Command.php:116 Stack trace: #0 C:\\xampp\\htdocs\\neo4j\\vendor\\everyman\\neo4jphp\\lib\\Everyman\\Neo4j\\Command\\GetServerInfo.php(53): Everyman\\Neo4j\\Command->throwException('Unable to retri...', 401, Array, Array) #1 C:\\xampp\\htdocs\\neo4j\\vendor\\everyman\\neo4jphp\\lib\\Everyman\\Neo4j\\Command.php(69): Everyman\\Neo4j\\Command\\GetServerInfo->handleResult(401, Array, Array) #2 C:\\xa in C:\\xampp\\htdocs\\neo4j\\vendor\\everyman\\neo4jphp\\lib\\Everyman\\Neo4j\\Command.php on line 116

How to solve this? Any help will be appreciated. Thanks in advance.

Answer 1

If you've installed the newest version of Neo4j, you will need authorization (provide a username and password) to connect to Neo4j. Your Everyman bundle does not seem to have one, or you are using an older one. I'm using Neoxygen/neoclient myself, which does provide the ability to provide username and password.

Answer 2

It will work. You just need to define the authorization credentials, for example like this:

<?php
   require('vendor/autoload.php');

   $client = new Everyman\Neo4j\Client(
            (new Everyman\Neo4j\Transport\Curl('localhost',7474))
                ->setAuth('neo4j','neo4j')
   );

   print_r($client->getServerInfo());

Adjust the user/password accordingly('neo4j'/'neo4j' are default ones).

Another solution is to disable the requirement for authorization when accessing Neo4j. This can be done by editing Neo4j config file:

conf/neo4j-server.properties

and setting to false the following flag:

dbms.security.auth_enabled=false

Of course you need to remember about restarting the server afterwards.