这里说的是实现在线安装，ipa安装包首先要有准备好。

使用到的文件：1.ipa安装包；2.plist描述文件；3.制作安装页面


第一步、首先是是要把ipa文件放到外网上可以访问下载到，我这里选择的是onedrive网盘。
上传后共享出外链地址。如下图。链接如：https://onedrive.live.com/redir?resid=75381495E1C2A8F%21108
 
第二步、然后通过OneDrive外链提取工具拿到真实下载地址。
其实不用工具也可以自己拿到地址比如上面的那个链接。拿到resid之后的字符串，在用文件类型就可以拼接出来。
[code]http://storage.live.com/items/+resid字符串+?hiadmin.+文件类型   //得到下面的真实地址
http://storage.live.com/items/75381495E1C2A8F%21108?hiadmin.ipa[/code]
第三步、修改plist文件，将plist文件上传。
[code]<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>items</key>
        <array>
                <dict>
                        <key>assets</key>
                        <array>
                                <dict>
                                        <key>kind</key>
                                        <string>software-package</string>
                                        <key>url</key>
                                        <string>程序ipa的URL</string>   //这里是以上得到的ipa真实地址
                                </dict>
                                <dict>
                                        <key>kind</key>
                                        <string>display-image</string>
                                        <key>url</key>
                                        <string>小ICON图标的URL</string>  //这里将图片上传后的真实地址
                                </dict>
                        </array>
                        <key>metadata</key>
                        <dict>
                                <key>bundle-identifier</key>
                                <string>com.xxxxxxx.xxxxxxx</string>
                                <key>kind</key>
                                <string>software</string>
                                <key>title</key>
                                <string>赵一诺</string>
                        </dict>
                </dict>
        </array>
</dict>
</plist>[/code]
第四步、创建下载的页面。
<a href="itms-services://?action=download-manifest&url=https://storage.live.com/items/75381495E1C2A8F%21114?hiadmin.plist">赵一诺</a>
其中url就上刚刚上传的plist的真实地址，并且url必须是https的。
[code]<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<meta name="viewport" content="target-densitydpi=device-dpi,width=device-width, initial-scale=1, user-scalable=no" /></head>
<body>
<a href="itms-services://?action=download-manifest&url=https://storage.live.com/items/75381495E1C2A8F%21114?hiadmin.plist">赵一诺</a>
</body>
</html>[/code]

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