package cc.shinichi.library.tool.common
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import java.io.*
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import java.net.HttpURLConnection
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import java.net.MalformedURLException
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import java.net.URL
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import java.net.URLDecoder
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/**
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* HttpURLConnection 下载图片
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*/
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object HttpUtil {
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/**
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* @param urlPath 下载路径
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* @param downloadDir 下载存放目录
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* @return 返回下载文件
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*/
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fun downloadFile(urlPath: String?, fileFullName: String, downloadDir: String): File? {
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var file: File? = null
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try {
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// 统一资源
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val url = URL(urlPath)
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// 连接类的父类，抽象类
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val urlConnection = url.openConnection()
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// http的连接类
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val httpURLConnection = urlConnection as HttpURLConnection
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// 设定请求的方法，默认是GET
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httpURLConnection.requestMethod = "GET"
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// 设置字符编码
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httpURLConnection.setRequestProperty("Charset", "UTF-8")
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// 打开到此 URL 引用的资源的通信链接（如果尚未建立这样的连接）。
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httpURLConnection.connect()
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val bin = BufferedInputStream(httpURLConnection.inputStream)
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val path = downloadDir + File.separatorChar + fileFullName
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file = File(path)
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file.parentFile?.let {
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if (!it.exists()) {
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it.mkdirs()
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}
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}
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val out: OutputStream = FileOutputStream(file)
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var size = 0
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var len = 0
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val buf = ByteArray(1024)
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while (bin.read(buf).also { size = it } != -1) {
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len += size
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out.write(buf, 0, size)
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}
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bin.close()
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out.close()
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return file
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} catch (e: MalformedURLException) {
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e.printStackTrace()
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} catch (e: IOException) {
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e.printStackTrace()
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} catch (e: Exception) {
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e.printStackTrace()
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}
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return null
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}
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fun decode(text: String): String {
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return URLDecoder.decode(text)
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}
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}
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