解决ThinkPHP5.1版本引入composer vendor扩展包的问题

下面由thinkphp框架教程栏目给大家介绍解决thinkphp5.1版本引入composer vendor扩展包的问题，希望对需要的朋友有所帮助！

版本说明

旧版本：ThinkPHP5.0新版本：ThinkPHP5.1问题：TP5.1 中取消了 Loader::import 方法以及import和vendor助手函数，全部采用命名空间和自动加载机制，导致引入类库找不到报错解决：因为“全部采用命名空间和自动加载机制”，所以对 composer/installed.json 做了修改（文字说明在下方注释中）

    {        "name": "curl/curl",        "version": "2.3.0",        "version_normalized": "2.3.0.0",        "source": {            "type": "git",            "url": "https://github.com/php-mod/curl.git",            "reference": "3ad560b1fc1bbdf5c7681356ab953fb961f255e5"        },        "dist": {            "type": "zip",            "url": "https://api.github.com/repos/php-mod/curl/zipball/3ad560b1fc1bbdf5c7681356ab953fb961f255e5",            "reference": "3ad560b1fc1bbdf5c7681356ab953fb961f255e5",            "shasum": ""        },        "require": {            "ext-curl": "*",            "php": "^5.6 | ^7.0"        },        "require-dev": {            "phpunit/phpunit": "^5.7",            "squizlabs/php_codesniffer": "~2.1"        },        "time": "2020-03-19T20:07:26+00:00",        "type": "library",        "installation-source": "dist",        "autoload": {            "psr-0": {                "Curl": "src/"            },            //在此处添加 files 字段，把类库文件的相对路径填入            "files":[                "vendor/curl/curl/src/Curl/Curl.php"            ]        },        "notification-url": "https://packagist.org/downloads/",        "license": [            "MIT"        ],        "authors": [            {                "name": "php-curl-class",                "homepage": "https://github.com/php-curl-class"            },            {                "name": "Hassan Amouhzi",                "email": "hassan@anezi.net",                "homepage": "http://hassan.amouhzi.com"            },            {                "name": "user52",                "homepage": "https://github.com/user52"            }        ],        "description": "cURL class for PHP",        "homepage": "https://github.com/php-mod/curl",        "keywords": [            "curl",            "dot"        ]    }