Php 找不到Omnipay sagepay 2.0软件包

我想将omnipay/Sagepay付款方式与我的项目集成..我成功安装了供应商文件夹..但无法更新Sagepay软件包..如果我更新，会出现如下显示终端错误“ 问题1 -找不到请求的包omnipay/sagepay 1.0.0

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your min
imum-stability setting"

另外，我选择哪个路径安装composer weather c:/bin（或）我的项目文件夹c:/xampp/htdocs/myproject

My Composer file is 
{
    "name": "omnipay/sagepay",
    "type": "library",
    "description": "Sage Pay driver for the Omnipay PHP payment processing library",
    "keywords": [
        "gateway",
        "merchant",
        "omnipay",
        "pay",
        "payment",
        "purchase",
        "sage pay",
        "sagepay"
    ],
    "homepage": "https://github.com/omnipay/sagepay",
    "license": "MIT",
    "authors": [
        {
            "name": "Adrian Macneil",
            "email": "adrian@adrianmacneil.com"
        },
        {
            "name": "Omnipay Contributors",
            "homepage": "https://github.com/omnipay/sagepay/contributors"
        }
    ],
    "autoload": {
        "psr-0": { "Omnipay\\SagePay\\" : "src/" }
    },
    "require": {
        "omnipay/common": "~2.0",
        "omnipay/sagepay": "~2.0"
    },
    "require-dev": {
        "omnipay/tests": "~2.0"
    },
    "extra": {
        "branch-alias": {
            "dev-master": "2.0.x-dev"
        }
    }
}

---

您的

composer.json

文件正在定义一个名为

omnipay/sagepay

的新包，这显然不是您想要的

根据安装说明，您的

composer.json

文件应包含以下内容：

{
    "require": {
        "omnipay/sagepay": "~2.0"
    }
}

然后运行

composer update

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