corner.payment.services.impl.processor.AlipayProcessor.java Source code

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Here is the source code for corner.payment.services.impl.processor.AlipayProcessor.java

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/* 
 * Copyright 2009 The Corner Team.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package corner.payment.services.impl.processor;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.commons.codec.digest.DigestUtils;
import org.apache.tapestry5.MarkupWriter;
import org.apache.tapestry5.json.JSONObject;

import corner.config.annotations.Configurable;
import corner.payment.services.PaymentProcessor;
import corner.payment.services.ViewHelper;
import corner.payment.services.impl.view.AlipayViewHelper;

/**
 * ??
 * 
 * @author <a href="jun.tsai@ganshane.net">Jun Tsai</a>
 * @version $Revision$
 * @since 0.0.2
 */
public class AlipayProcessor implements PaymentProcessor {
    /** ? * */
    private static final String GATEWAY_URL = "https://www.alipay.com/cooperate/gateway.do?_input_charset=utf-8";
    /** ???* */
    private static final String QUERY_URL = "http://notify.alipay.com/trade/notify_query.do";
    private String key;
    private String partner;

    public AlipayProcessor(@Configurable AlipayConfig config) {
        this.partner = config.getPartnerId();
        this.key = config.getKey();
    }

    /**
     * @see corner.payment.services.PaymentProcessor#getServiceUrl()
     */
    @Override
    public Object getServiceUrl() {
        return GATEWAY_URL;
    }

    /**
     * @see corner.payment.services.PaymentProcessor#getViewHelper(org.apache.tapestry5.MarkupWriter)
     */
    @Override
    public ViewHelper getViewHelper(MarkupWriter writer, JSONObject options) {
        // ?
        return new AlipayViewHelper(writer, options, partner, key);
    }

    /**
     * 
     * @see corner.payment.services.PaymentProcessor#verifyReturn(java.util.Map)
     */
    @Override
    public boolean verifyReturn(Map<String, String> params) {
        if (params == null || params.isEmpty()) {
            throw new IllegalArgumentException("No params.");
        }
        final Map<String, String> _data = new HashMap<String, String>();
        String _sign = null;
        String _sign_type = null;
        // ?map???singsign_type,?
        for (Iterator<String> iter = params.keySet().iterator(); iter.hasNext();) {
            String name = iter.next();
            String value = params.get(name);
            if (name.equalsIgnoreCase("sign")) {
                _sign = value;
                continue;
            } else if (name.equalsIgnoreCase("sign_type")) {
                _sign_type = value;
                continue;
            }
            _data.put(name, value);
        }

        if (_sign == null || _sign_type == null) {
            // ?????,?
            return false;
        }
        if (!"MD5".equalsIgnoreCase(_sign_type)) {
            throw new UnsupportedOperationException("Not support digest type[" + _sign_type + "]");
        }
        // ??,????
        final List<String> keys = new ArrayList<String>(_data.keySet());
        Collections.sort(keys);

        final StringBuilder content = new StringBuilder();
        for (int i = 0; i < keys.size(); i++) {
            String key = keys.get(i);
            String value = _data.get(key);
            content.append((i == 0 ? "" : "&") + key + "=" + value);
        }
        content.append(this.key);

        String _tocheck = "";
        if ("MD5".equalsIgnoreCase(_sign_type)) {
            try {
                _tocheck = DigestUtils.md5Hex(content.toString().getBytes("UTF-8"));
            } catch (UnsupportedEncodingException e) {
                throw new RuntimeException(e);
            }
        }
        return _tocheck.equalsIgnoreCase(_sign);
    }

    @Override
    public boolean verifyNotify(String notifyId) {
        if (notifyId == null) {
            throw new IllegalArgumentException("The notifyId is null");
        }
        String alipayNotifyURL = String.format("%s?partner=%s&notify_id=%s", QUERY_URL, partner, notifyId);
        java.io.Closeable input = null;
        try {
            URL url = new URL(alipayNotifyURL);
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setDoOutput(false);
            urlConnection.setConnectTimeout(30 * 1000);
            urlConnection.setReadTimeout(30 * 1000);
            BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
            input = in;
            String inputLine = in.readLine().toString();
            urlConnection.disconnect();
            if ("true".equalsIgnoreCase(inputLine)) {
                return true;
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (input != null) {
                try {
                    input.close();
                } catch (IOException e) {
                }
            }
        }
        return false;
    }
}