将 Laravel 5.5 升级到 5.6 错误

我正在尝试将我的Laravel升级到我已经按照laravel网站上的说明进行操作，但我得到了这个错误：5.55.6.

Your requirements could not be resolved to an installable set of packages.
    Problem 1
        - The requested package laravel/framework 5.6.* is satisfiable by laravel/framework[5.6.x-dev] but these conflict with your requirements or minimum-stability.

因此，我更改了我的文件并添加了2行：基于此laracast讨论的第一个答案。composer.json**"minimum-stability": "dev", "prefer-stable": true,**

一切似乎都很好，直到我得到另一个错误：

Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 0 installs, 6 updates, 0 removals
  - Updating sebastian/diff (2.0.1 => 3.0.0): Downloading (100%)         
  - Updating phpunit/phpunit-mock-objects (5.0.6 => 6.0.0): Downloading (100%)    - Updating phpunit/php-timer (1.0.9 => 2.0.0): Downloading (100%)         
  - Updating phpunit/php-token-stream (2.0.2 => 3.0.0): Downloading (100%)        - Updating phpunit/php-code-coverage (5.3.0 => 6.0.1): Downloading (100%)       - Updating phpunit/phpunit (6.5.6 => 7.0.0): Downloading (100%)         
Writing lock file
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover

In trustedproxy.php line 66:

  Undefined class constant 'HEADER_CLIENT_IP'  


Script @php artisan package:discover handling the post-autoload-dump event returned with error code 1

第 66 行的问题是 Illuminate\Http\Request：：HEADER_CLIENT_IP => 'X_FORWARDED_FOR'，。我已经搜索了stackoverflow上的其他帖子，但仍然没有运气。我尝试的最后一件事是作曲家自我更新和作曲家全局更新，这在后作曲家转储自动加载无法识别命令中提到

另外，我无法删除“最小稳定性”：“dev”，“prefer-stable”：true，因为如果我这样做，那么我会收到以下错误：

    - Installation request for laravel/framework 5.6.* -> satisfiable by laravel/framework[5.6.x-dev].
- Removal request for laravel/framework == 5.6.9999999.9999999-dev

我分别附上了我的 composer.json 文件和 trustedproxy.php。任何帮助将不胜感激。

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "minimum-stability": "dev",
"prefer-stable": true,
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": ">=7.1.3",
        "fideloper/proxy": "~3.3",
        "laravel/framework": "5.6.*",
        "laravel/tinker": "~1.0"
    },
    "require-dev": {
        "filp/whoops": "~2.0",
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "~1.0",
        "phpunit/phpunit": "~7.0",
        "symfony/thanks": "^1.0"
    },
    "autoload": {
        "classmap": [
            "database/seeds",
            "database/factories"
        ],
        "psr-4": {
            "App\\": "app/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "extra": {
        "laravel": {
            "dont-discover": [
            ]
        }
    },
    "scripts": {
        "post-root-package-install": [
            "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "@php artisan key:generate"
        ],
        "post-autoload-dump": [
            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover"
        ]
    },
    "config": {
        "preferred-install": "dist",
        "sort-packages": true,
        "optimize-autoloader": true
    }
}

trustedproxy.php(error in line 66--> Illuminate\Http\Request::HEADER_CLIENT_IP => 'X_FORWARDED_FOR',)

<?php

return [

    /*
     * Set trusted proxy IP addresses.
     *
     * Both IPv4 and IPv6 addresses are
     * supported, along with CIDR notation.
     *
     * The "*" character is syntactic sugar
     * within TrustedProxy to trust any proxy
     * that connects directly to your server,
     * a requirement when you cannot know the address
     * of your proxy (e.g. if using Rackspace balancers).
     *
     * The "**" character is syntactic sugar within
     * TrustedProxy to trust not just any proxy that
     * connects directly to your server, but also
     * proxies that connect to those proxies, and all
     * the way back until you reach the original source
     * IP. It will mean that $request->getClientIp()
     * always gets the originating client IP, no matter
     * how many proxies that client's request has
     * subsequently passed through.
     */
    'proxies' => [
        '192.168.1.10',
    ],

    /*
     * Or, to trust all proxies that connect
     * directly to your server, uncomment this:
     */
     # 'proxies' => '*',

    /*
     * Or, to trust ALL proxies, including those that
     * are in a chain of forwarding, uncomment this:
    */
    # 'proxies' => '**',

    /*
     * Default Header Names
     *
     * Change these if the proxy does
     * not send the default header names.
     *
     * Note that headers such as X-Forwarded-For
     * are transformed to HTTP_X_FORWARDED_FOR format.
     *
     * The following are Symfony defaults, found in
     * \Symfony\Component\HttpFoundation\Request::$trustedHeaders
     *
     * You may optionally set headers to 'null' here if you'd like
     * for them to be considered untrusted instead. Ex:
     *
     * Illuminate\Http\Request::HEADER_CLIENT_HOST  => null,
     * 
     * WARNING: If you're using AWS Elastic Load Balancing or Heroku,
     * the FORWARDED and X_FORWARDED_HOST headers should be set to null 
     * as they are currently unsupported there.
     */
    'headers' => [
        (defined('Illuminate\Http\Request::HEADER_FORWARDED') ? Illuminate\Http\Request::HEADER_FORWARDED : 'forwarded') => 'FORWARDED',
        Illuminate\Http\Request::HEADER_CLIENT_IP    => 'X_FORWARDED_FOR',
        Illuminate\Http\Request::HEADER_CLIENT_HOST  => 'X_FORWARDED_HOST',
        Illuminate\Http\Request::HEADER_CLIENT_PROTO => 'X_FORWARDED_PROTO',
        Illuminate\Http\Request::HEADER_CLIENT_PORT  => 'X_FORWARDED_PORT',
    ]
];

照亮\Http\请求文件：

<?php

namespace Illuminate\Http;

use Closure;
use ArrayAccess;
use RuntimeException;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Support\Traits\Macroable;
use Illuminate\Contracts\Support\Arrayable;
use Symfony\Component\HttpFoundation\ParameterBag;
use Symfony\Component\HttpFoundation\Request as SymfonyRequest;

class Request extends SymfonyRequest implements Arrayable, ArrayAccess
{
    use Concerns\InteractsWithContentTypes,
        Concerns\InteractsWithFlashData,
        Concerns\InteractsWithInput,
        Macroable;

    /**
     * The decoded JSON content for the request.
     *
     * @var \Symfony\Component\HttpFoundation\ParameterBag|null
     */
    protected $json;

    /**
     * All of the converted files for the request.
     *
     * @var array
     */
    protected $convertedFiles;

    /**
     * The user resolver callback.
     *
     * @var \Closure
     */
    protected $userResolver;

    /**
     * The route resolver callback.
     *
     * @var \Closure
     */
    protected $routeResolver;

    /**
     * Create a new Illuminate HTTP request from server variables.
     *
     * @return static
     */
    public static function capture()
    {
        static::enableHttpMethodParameterOverride();

        return static::createFromBase(SymfonyRequest::createFromGlobals());
    }

    /**
     * Return the Request instance.
     *
     * @return $this
     */
    public function instance()
    {
        return $this;
    }

    /**
     * Get the request method.
     *
     * @return string
     */
    public function method()
    {
        return $this->getMethod();
    }

    /**
     * Get the root URL for the application.
     *
     * @return string
     */
    public function root()
    {
        return rtrim($this->getSchemeAndHttpHost().$this->getBaseUrl(), '/');
    }

    /**
     * Get the URL (no query string) for the request.
     *
     * @return string
     */
    public function url()
    {
        return rtrim(preg_replace('/\?.*/', '', $this->getUri()), '/');
    }

    /**
     * Get the full URL for the request.
     *
     * @return string
     */
    public function fullUrl()
    {
        $query = $this->getQueryString();

        $question = $this->getBaseUrl().$this->getPathInfo() == '/' ? '/?' : '?';

        return $query ? $this->url().$question.$query : $this->url();
    }

    /**
     * Get the full URL for the request with the added query string parameters.
     *
     * @param  array  $query
     * @return string
     */
    public function fullUrlWithQuery(array $query)
    {
        $question = $this->getBaseUrl().$this->getPathInfo() == '/' ? '/?' : '?';

        return count($this->query()) > 0
            ? $this->url().$question.http_build_query(array_merge($this->query(), $query))
            : $this->fullUrl().$question.http_build_query($query);
    }

    /**
     * Get the current path info for the request.
     *
     * @return string
     */
    public function path()
    {
        $pattern = trim($this->getPathInfo(), '/');

        return $pattern == '' ? '/' : $pattern;
    }

    /**
     * Get the current decoded path info for the request.
     *
     * @return string
     */
    public function decodedPath()
    {
        return rawurldecode($this->path());
    }

    /**
     * Get a segment from the URI (1 based index).
     *
     * @param  int  $index
     * @param  string|null  $default
     * @return string|null
     */
    public function segment($index, $default = null)
    {
        return Arr::get($this->segments(), $index - 1, $default);
    }

    /**
     * Get all of the segments for the request path.
     *
     * @return array
     */
    public function segments()
    {
        $segments = explode('/', $this->decodedPath());

        return array_values(array_filter($segments, function ($value) {
            return $value !== '';
        }));
    }

    /**
     * Determine if the current request URI matches a pattern.
     *
     * @param  dynamic  $patterns
     * @return bool
     */
    public function is(...$patterns)
    {
        foreach ($patterns as $pattern) {
            if (Str::is($pattern, $this->decodedPath())) {
                return true;
            }
        }

        return false;
    }

    /**
     * Determine if the route name matches a given pattern.
     *
     * @param  dynamic  $patterns
     * @return bool
     */
    public function routeIs(...$patterns)
    {
        return $this->route() && $this->route()->named(...$patterns);
    }

    /**
     * Determine if the current request URL and query string matches a pattern.
     *
     * @param  dynamic  $patterns
     * @return bool
     */
    public function fullUrlIs(...$patterns)
    {
        $url = $this->fullUrl();

        foreach ($patterns as $pattern) {
            if (Str::is($pattern, $url)) {
                return true;
            }
        }

        return false;
    }

    /**
     * Determine if the request is the result of an AJAX call.
     *
     * @return bool
     */
    public function ajax()
    {
        return $this->isXmlHttpRequest();
    }

    /**
     * Determine if the request is the result of an PJAX call.
     *
     * @return bool
     */
    public function pjax()
    {
        return $this->headers->get('X-PJAX') == true;
    }

    /**
     * Determine if the request is over HTTPS.
     *
     * @return bool
     */
    public function secure()
    {
        return $this->isSecure();
    }

    /**
     * Get the client IP address.
     *
     * @return string
     */
    public function ip()
    {
        return $this->getClientIp();
    }

    /**
     * Get the client IP addresses.
     *
     * @return array
     */
    public function ips()
    {
        return $this->getClientIps();
    }

    /**
     * Get the client user agent.
     *
     * @return string
     */
    public function userAgent()
    {
        return $this->headers->get('User-Agent');
    }

    /**
     * Merge new input into the current request's input array.
     *
     * @param  array  $input
     * @return \Illuminate\Http\Request
     */
    public function merge(array $input)
    {
        $this->getInputSource()->add($input);

        return $this;
    }

    /**
     * Replace the input for the current request.
     *
     * @param  array  $input
     * @return \Illuminate\Http\Request
     */
    public function replace(array $input)
    {
        $this->getInputSource()->replace($input);

        return $this;
    }

    /**
     * Get the JSON payload for the request.
     *
     * @param  string  $key
     * @param  mixed   $default
     * @return \Symfony\Component\HttpFoundation\ParameterBag|mixed
     */
    public function json($key = null, $default = null)
    {
        if (! isset($this->json)) {
            $this->json = new ParameterBag((array) json_decode($this->getContent(), true));
        }

        if (is_null($key)) {
            return $this->json;
        }

        return data_get($this->json->all(), $key, $default);
    }

    /**
     * Get the input source for the request.
     *
     * @return \Symfony\Component\HttpFoundation\ParameterBag
     */
    protected function getInputSource()
    {
        if ($this->isJson()) {
            return $this->json();
        }

        return $this->getRealMethod() == 'GET' ? $this->query : $this->request;
    }

    /**
     * Create an Illuminate request from a Symfony instance.
     *
     * @param  \Symfony\Component\HttpFoundation\Request  $request
     * @return \Illuminate\Http\Request
     */
    public static function createFromBase(SymfonyRequest $request)
    {
        if ($request instanceof static) {
            return $request;
        }

        $content = $request->content;

        $request = (new static)->duplicate(
            $request->query->all(), $request->request->all(), $request->attributes->all(),
            $request->cookies->all(), $request->files->all(), $request->server->all()
        );

        $request->content = $content;

        $request->request = $request->getInputSource();

        return $request;
    }

    /**
     * {@inheritdoc}
     */
    public function duplicate(array $query = null, array $request = null, array $attributes = null, array $cookies = null, array $files = null, array $server = null)
    {
        return parent::duplicate($query, $request, $attributes, $cookies, $this->filterFiles($files), $server);
    }

    /**
     * Filter the given array of files, removing any empty values.
     *
     * @param  mixed  $files
     * @return mixed
     */
    protected function filterFiles($files)
    {
        if (! $files) {
            return;
        }

        foreach ($files as $key => $file) {
            if (is_array($file)) {
                $files[$key] = $this->filterFiles($files[$key]);
            }

            if (empty($files[$key])) {
                unset($files[$key]);
            }
        }

        return $files;
    }

    /**
     * Get the session associated with the request.
     *
     * @return \Illuminate\Session\Store
     *
     * @throws \RuntimeException
     */
    public function session()
    {
        if (! $this->hasSession()) {
            throw new RuntimeException('Session store not set on request.');
        }

        return $this->session;
    }

    /**
     * Get the session associated with the request.
     *
     * @return \Illuminate\Session\Store|null
     */
    public function getSession()
    {
        return $this->session;
    }

    /**
     * Set the session instance on the request.
     *
     * @param  \Illuminate\Contracts\Session\Session  $session
     * @return void
     */
    public function setLaravelSession($session)
    {
        $this->session = $session;
    }

    /**
     * Get the user making the request.
     *
     * @param  string|null  $guard
     * @return mixed
     */
    public function user($guard = null)
    {
        return call_user_func($this->getUserResolver(), $guard);
    }

    /**
     * Get the route handling the request.
     *
     * @param  string|null  $param
     *
     * @return \Illuminate\Routing\Route|object|string
     */
    public function route($param = null)
    {
        $route = call_user_func($this->getRouteResolver());

        if (is_null($route) || is_null($param)) {
            return $route;
        }

        return $route->parameter($param);
    }

    /**
     * Get a unique fingerprint for the request / route / IP address.
     *
     * @return string
     *
     * @throws \RuntimeException
     */
    public function fingerprint()
    {
        if (! $route = $this->route()) {
            throw new RuntimeException('Unable to generate fingerprint. Route unavailable.');
        }

        return sha1(implode('|', array_merge(
            $route->methods(), [$route->getDomain(), $route->uri(), $this->ip()]
        )));
    }

    /**
     * Set the JSON payload for the request.
     *
     * @param  \Symfony\Component\HttpFoundation\ParameterBag  $json
     * @return $this
     */
    public function setJson($json)
    {
        $this->json = $json;

        return $this;
    }

    /**
     * Get the user resolver callback.
     *
     * @return \Closure
     */
    public function getUserResolver()
    {
        return $this->userResolver ?: function () {
            //
        };
    }

    /**
     * Set the user resolver callback.
     *
     * @param  \Closure  $callback
     * @return $this
     */
    public function setUserResolver(Closure $callback)
    {
        $this->userResolver = $callback;

        return $this;
    }

    /**
     * Get the route resolver callback.
     *
     * @return \Closure
     */
    public function getRouteResolver()
    {
        return $this->routeResolver ?: function () {
            //
        };
    }

    /**
     * Set the route resolver callback.
     *
     * @param  \Closure  $callback
     * @return $this
     */
    public function setRouteResolver(Closure $callback)
    {
        $this->routeResolver = $callback;

        return $this;
    }

    /**
     * Get all of the input and files for the request.
     *
     * @return array
     */
    public function toArray()
    {
        return $this->all();
    }

    /**
     * Determine if the given offset exists.
     *
     * @param  string  $offset
     * @return bool
     */
    public function offsetExists($offset)
    {
        return array_key_exists(
            $offset, $this->all() + $this->route()->parameters()
        );
    }

    /**
     * Get the value at the given offset.
     *
     * @param  string  $offset
     * @return mixed
     */
    public function offsetGet($offset)
    {
        return $this->__get($offset);
    }

    /**
     * Set the value at the given offset.
     *
     * @param  string  $offset
     * @param  mixed  $value
     * @return void
     */
    public function offsetSet($offset, $value)
    {
        $this->getInputSource()->set($offset, $value);
    }

    /**
     * Remove the value at the given offset.
     *
     * @param  string  $offset
     * @return void
     */
    public function offsetUnset($offset)
    {
        $this->getInputSource()->remove($offset);
    }

    /**
     * Check if an input element is set on the request.
     *
     * @param  string  $key
     * @return bool
     */
    public function __isset($key)
    {
        return ! is_null($this->__get($key));
    }

    /**
     * Get an input element from the request.
     *
     * @param  string  $key
     * @return mixed
     */
    public function __get($key)
    {
        if (array_key_exists($key, $this->all())) {
            return data_get($this->all(), $key);
        }

        return $this->route($key);
    }
}

谢谢