java代理IP设置实例，javaip实例,System.setPr

java代理IP设置实例，javaip实例,System.setPr

System.setProperty("http.maxRedirects","50"); System.getProperties().setProperty("proxySet","true"); //如果不设置，只要代理IP和代理端口正确,此项不设置也可以
System.getProperties().setProperty("http.proxyHost",“代理ip地址”); System.getProperties().setProperty("http.proxyPort","代理ip端口号");

     //确定代理是否设置成功      System.out.println(getHtml("http://iframe.ip138.com/ic.asp"));      writefile("D:/daili.txt", getHtml("http://iframe.ip138.com/ic.asp")+"\r\n", true);

public static String getHtml(String address){ StringBuffer html = new StringBuffer(); String result = null; try{ URL url = new URL(address); URLConnection conn = url.openConnection(); conn.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 7.0; NT 5.1; GTB5; .NET CLR 2.0.50727; CIBA)"); BufferedInputStream in = new BufferedInputStream(conn.getInputStream()); try{ String inputLine; byte[] buf = new byte[4096]; int bytesRead = 0; while (bytesRead >= 0) { inputLine = new String(buf, 0, bytesRead, "ISO-8859-1"); html.append(inputLine); bytesRead = in.read(buf); inputLine = null; } buf = null; }finally{ in.close(); conn = null; url = null; } result = new String(html.toString().trim().getBytes("ISO-8859-1"), "gb2312").toLowerCase(); }catch (Exception e) { e.printStackTrace(); return null; }finally{ html = null; } return result; }