Groovy-正则捕获，Http请求和写入文件

示例：

    <!-- Font Awesome -->
    <link href="static/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
    <!-- Ionicons -->
    <link href="static/ionicons/4.1.2/css/ionicons.min.css" rel="stylesheet">

import java.net.http.HttpClient
import java.net.http.HttpRequest
import java.net.http.HttpResponse
import java.nio.file.Files
import java.nio.file.Paths
import java.util.regex.Matcher

def file = new File(/C:\Users\kiss\IdeaProjects\demo.html/)
def collect = file.readLines()
        .findAll { it.contains(/"static/) }
        .collect {
            println it
            Matcher matcher = it =~ $/.*"static/(.+s)".*/$
            matcher[0][1]
        }
println collect
def httpClient = HttpClient.newBuilder().build()
collect.each {
    def request = HttpRequest.newBuilder(URI.create("http://cdn.staticfile.org/$it")).GET().build()
    def response = httpClient.send(request, HttpResponse.BodyHandlers.ofString())
    println response.body()
    Files.writeString(Paths.get("d:/stt/$it").createParentDirectories(), response.body())
}