使用HttpURLConnection调用Tumblr Web Service获取自己的Posts，,使用HttpURLCon

使用HttpURLConnection调用Tumblr Web Service获取自己的Posts，,使用HttpURLCon

使用HttpURLConnection调用Tumblr Web Service获取自己的Posts

package client;import java.io.BufferedReader;import java.io.ByteArrayInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.net.URLEncoder;import java.util.Properties;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerConfigurationException;import javax.xml.transform.TransformerException;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMResult;import javax.xml.transform.stream.StreamSource;import javax.xml.xpath.XPath;import javax.xml.xpath.XPathConstants;import javax.xml.xpath.XPathExpressionException;import javax.xml.xpath.XPathFactory;import org.w3c.dom.Node;import org.w3c.dom.NodeList;class TumblrClient {    public static void main(String[] args) {        if (args.length < 2) {            System.err.println("Usage: TumblrClient <email> <passwd>");            return;        }        new TumblrClient().tumble(args[0], args[1]);    }    private void tumble(String email, String password) {        try {            HttpURLConnection conn = null;            // GET request.            String url = "http://mgk-cdm.tumblr.com/api/read";            conn = get_connection(url, "GET");            conn.setRequestProperty("accept", "text/xml");            conn.connect();            String xml = get_response(conn);            if (xml.length() > 0) {                System.out.println("Raw XML:\\n" + xml);                parse(xml, "\\nSki photo captions:", "//photo-caption");            }            // POST request            url = "http://www.tumblr.com/api/write";            conn = get_connection(url, "POST");            String title = "Summer thoughts up north";            String body = "Craigieburn Ski Area, NZ";            String payload = URLEncoder.encode("email", "UTF-8") + "="                    + URLEncoder.encode(email, "UTF-8") + "&"                    + URLEncoder.encode("password", "UTF-8") + "="                    + URLEncoder.encode(password, "UTF-8") + "&"                    + URLEncoder.encode("type", "UTF-8") + "="                    + URLEncoder.encode("regular", "UTF-8") + "&"                    + URLEncoder.encode("title", "UTF-8") + "="                    + URLEncoder.encode(title, "UTF-8") + "&"                    + URLEncoder.encode("body", "UTF-8") + "="                    + URLEncoder.encode(body, "UTF-8");            DataOutputStream out = new DataOutputStream(conn.getOutputStream());            out.writeBytes(payload);            out.flush();            String response = get_response(conn);            System.out.println("Confirmation code: " + response);        } catch (IOException e) {            System.err.println(e);        } catch (NullPointerException e) {            System.err.println(e);        }    }    private HttpURLConnection get_connection(String url_s, String verb) {        HttpURLConnection conn = null;        try {            URL url = new URL(url_s);            conn = (HttpURLConnection) url.openConnection();            conn.setRequestMethod(verb);            conn.setDoInput(true);            conn.setDoOutput(true);        } catch (MalformedURLException e) {            System.err.println(e);        } catch (IOException e) {            System.err.println(e);        }        return conn;    }    private String get_response(HttpURLConnection conn) {        String xml = "";        try {            BufferedReader reader = new BufferedReader(new InputStreamReader(                    conn.getInputStream()));            String next = null;            while ((next = reader.readLine()) != null)                xml += next;        } catch (IOException e) {            System.err.println(e);        }        return xml;    }    private void parse(String xml, String msg, String pattern) {        StreamSource source = new StreamSource(new ByteArrayInputStream(                xml.getBytes()));        DOMResult dom_result = new DOMResult();        System.out.println(msg);        try {            Transformer trans = TransformerFactory.newInstance()                    .newTransformer();            trans.transform(source, dom_result);            XPathFactory xpf = XPathFactory.newInstance();            XPath xp = xpf.newXPath();            NodeList list = (NodeList) xp.evaluate(pattern,                    dom_result.getNode(), XPathConstants.NODESET);            int len = list.getLength();            for (int i = 0; i < len; i++) {                Node node = list.item(i);                if (node != null)                    System.out.println(node.getFirstChild().getNodeValue());            }        } catch (TransformerConfigurationException e) {            System.err.println(e);        } catch (TransformerException e) {            System.err.println(e);        } catch (XPathExpressionException e) {            System.err.println(e);        }    }}//该片段来自于http://byrx.net