第一种类型:URL
打包InternetTest导入Java . io . bytearrayoutputstream；导入Java . io . inputstream；导入Java . net . httpurl connection；导入Java . net . URL；公共类a44 { public static void main(String[]args)抛出异常{ URL URL = new URL(& # 34；http://www . Baidu . com & # 34；);HttpURLConnection conn =(http urlconnection)URL . open connection()；conn . setrequestmethod(& # 34；获取& # 34；);conn . setconnecttimeout(5 * 1024)；InputStream inStream = conn . getinputstream()；ByteArrayOutputStream out stream = new ByteArrayOutputStream()；byte[] buffer =新字节[1024]；int len = 0；while((len = instream . read(buffer))！= -1) { outStream.write(buffer，0，len)；} instream . close()；byte[]data = out stream . tobytearray()；String htmlSource =新字符串(数据)；system . out . println(html source)；}}第二种:HttpClient
打包InternetTest导入org . Apache . http . http entity；导入org . Apache . http . http status；import org . Apache . http . client . methods . closeable httpresponse；导入org . Apache . http . client . methods . http get；导入org . Apache . http . client . utils . httpclienttutils；import org . Apache . http . impl . client . closeable http client；导入org . Apache . http . impl . client . http clients；导入org . Apache . http . util . entity utils；公共类a45 { public static void main(String[]args)抛出异常{ String url1 = & # 34http://www . Baidu . com & # 34；；closeable httpclient closeable httpclient = http clients . create default()；CloseableHttpResponse CloseableHttpResponse = null；http get request = new http get(URL 1)；closeable httpresponse = closeable httpclient . execute(request)；if(closeablehttpresponse . getstatusline()。getStatusCode() == HttpStatus。SC _ OK){ HttpEntity HttpEntity = closeablehttpresponse . get entity()；string html = entity utils . tostring(http entity，& # 34；utf-8 & # 34；);system . out . println(html)；} else { system . out . println(entity utils . tostring(closeable httpresponse . getentity()，& # 34；utf-8 & # 34；));} httpclienttutils . closequietly(closeableHttpResponse)；httpclientutils . closequietly(closeableHttpClient)；}}
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原文地址"java爬虫获取网页源码2种方式(纯净版)"：http://www.guoyinggangguan.com/xedk/232787.html。
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