composer 自动加载(php-amqplib)

最近要使用RabbitMQ 做消息队列,也是刚接触到.因为用的的TP框架,comoser又下载不下来,所以只能手动下载拓展包,做手动加载,在php-amqplib是我手动下载下来的拓展包,创建一个composer.json文件,在里面输入

 {
   "name": "php-amqplib/php-amqplib",
   "replace": {
     "videlalvaro/php-amqplib": "self.version"
   },
   "type": "library",
   "description": "Formerly videlalvaro/php-amqplib.  This library is a pure PHP implementation of the AMQP protocol. It's been tested against RabbitMQ.",
   "keywords": ["rabbitmq", "message", "queue"],
   "homepage": "https://github.com/php-amqplib/php-amqplib/",
   "authors": [
     {
       "name": "Alvaro Videla",
       "role": "Original Maintainer"
     },
     {
       "name": "John Kelly",
       "email": "johnmkelly86@gmail.com",
       "role": "Maintainer"
     },
     {
       "name": "Raúl Araya",
       "email": "nubeiro@gmail.com",
       "role": "Maintainer"
     }
   ],
   "require": {
     "php": ">=5.3.0",
     "ext-bcmath": "*",
     "ext-mbstring": "*"
   },
   "require-dev": {
     "phpunit/phpunit": "^4.8",
     "scrutinizer/ocular": "^1.1",
     "squizlabs/php_codesniffer": "^2.5"
   },
   "suggest": {
     "ext-sockets": "Use AMQPSocketConnection"
   },
   "autoload": {
40     "psr-4": {
41       "PhpAmqpLib\\": "php-amqplib/PhpAmqpLib/"　　//主要是这里,他是你加载包的路径,PhpAmqpLib 是空间命名,遵循的是PSR-4 自动加载原则
42     }
43   },
44   "autoload-dev": {
45     "psr-4": {
46       "PhpAmqpLib\\Tests\\Functional\\": "tests/Functional",
47       "PhpAmqpLib\\Tests\\Unit\\": "tests/Unit"
48     }
49   },
   "license": "LGPL-2.1",
   "extra": {
     "branch-alias": {
       "dev-master": "2.7-dev"
     }
   }
 }

php composer.phar dump-autoload 就会生成一个vendor文件夹,使用的时候,你就只需把vendor文件夹里的autoload.php 文件引入进去就可以自动加载了