读取网页内容代码,Java代码库,德仔网

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【Java】读取网页内容

作者:Dezai.CN / 发布于2012/11/27/ 456

public static String getPageContent(String strUrl, String strPostRequest,
            int maxLength) throws Exception {
        //读取结果网页
        StringBuffer buffer = new StringBuffer();
        System.setProperty("sun.net.client.defaultConnectTimeout", "5000");
        System.setProperty("sun.net.client.defaultReadTimeout", "5000");
        try {
            URL newUrl = new URL(strUrl);
            HttpURLConnection hConnect = (HttpURLConnection) newUrl
                    .openConnection();
            //POST方式的额外数据
            if (strPostRequest.length() > 0) {
                hConnect.setDoOutput(true);
                OutputStreamWriter out = new OutputStreamWriter(hConnect
                        .getOutputStream());
                out.write(strPostRequest);
                out.flush();
                out.close();
            }
            //读取内容

            BufferedReader rd = new BufferedReader(new InputStreamReader(hConnect.getInputStream()));
            int ch;
            for (int length = 0; (ch = rd.read()) > -1 && (maxLength <= 0 || length < maxLength); length++) {
                buffer.append((char) ch);
            }
            rd.close();
            hConnect.disconnect();
            return buffer.toString().trim();
        } catch (Exception e) {
            // return "错误:读取网页失败！";
            return null;
        }
    }

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　网页内容　

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