com.wafersystems.util.HttpUtil.java Source code

Introduction

Here is the source code for com.wafersystems.util.HttpUtil.java

Source

package com.wafersystems.util;

/**
 * Copyright (c) 2006-2008 Wafer System Xi'an Software Corporation. 
 * All Rights Reserved.
 *
 * This SOURCE CODE FILE, which has been provided by Wafer System Software as part of 
 * a Wafer System Software product for use ONLY by licensed users of the product, includes
 * CONFIDENTIAL and PROPRIETARY information of Wafer System Software.
 *
 * USE OF THIS SOFTWARE IS GOVERNED BY THE TERMS AND CONDITIONS OF THE LICENSE STATEMENT 
 * AND LIMITED WARRANTY FURNISHED WITH THE PRODUCT.
 *
 * IN PARTICULAR, YOU WILL INDEMNIFY AND HOLD WAFER SYSTEM SOFTWARE, ITS RELATED COMPANIES 
 * AND ITS SUPPLIERS, HARMLESS FROM AND AGAINST ANY CLAIMS OR LIABILITIES ARISING OUT OF 
 * THE USE, REPRODUCTION, OR DISTRIBUTION OF YOUR PROGRAMS, INCLUDING ANY CLAIMS OR 
 * LIABILITIES ARISING OUT OF OR RESULTING FROM THE USE, MODIFICATION, OR DISTRIBUTION OF 
 * PROGRAMS OR FILES CREATED FROM, BASED ON, AND/OR DERIVED FROM THIS SOURCE CODE FILE.
 */

import org.apache.commons.httpclient.Cookie;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.cookie.CookiePolicy;
import org.apache.commons.httpclient.cookie.CookieSpec;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.log4j.Logger;

import com.wafersystems.util.StrUtil;

/**
 * ??Http
 *
 *    AnDong
 *    2008-10-18 ?02:03:57
 * ?   V1.0
 */
public class HttpUtil {
    private static Logger logger = Logger.getLogger(HttpUtil.class);

    private HttpUtil() {
    }

    /**
     * URL?
     * 
     * @param hClient   HttpClient
     * @param url      URL
     * 
     * @return
     * @throws Exception
     */
    public static String openURL(HttpClient hClient, String url) throws Exception {
        HttpMethod method = null;
        try {
            //Get
            method = new GetMethod(url);
            // URL
            int result = hClient.executeMethod(method);
            //cookie?
            //getCookie(method.getURI().getHost(), method.getURI().getPort(), "/" , false , hClient.getState().getCookies());

            //???
            result = checkRedirect(method.getURI().getHost(), method.getURI().getPort(), hClient, method, result);

            if (result != HttpStatus.SC_OK)
                logger.error(method.getPath() + "" + method.getStatusLine().toString() + "\r\n"
                        + method.getResponseBodyAsString());

            return method.getResponseBodyAsString();
        } finally {
            method.releaseConnection();
        }
    }

    /**
     * ?URLCookie?
     * 
     * 
     */
    public static void getCookie(String ip, int port, String path, boolean secure, Cookie[] httpCookies) {
        CookieSpec cookiespec = CookiePolicy.getDefaultSpec();
        Cookie[] cookies = cookiespec.match(ip, port, path, secure, httpCookies);
        if (cookies.length == 0)
            logger.debug("Cookie?");
        else {
            logger.debug("Cookie?");
            for (int i = 0; i < cookies.length; i++)
                logger.debug(cookies[i].toString());
        }
    }

    /**
     * ??
     * 
     * @param ip         IP?
     * @param port         ??
     * @param hClient      HttpClient
     * @param method      HttpMethod
     * @param lastResult   
     * 
     * @return
     */
    public static int checkRedirect(String ip, int port, HttpClient hClient, HttpMethod method, int lastResult)
            throws Exception {
        int result = HttpStatus.SC_OK;

        if ((lastResult == HttpStatus.SC_MOVED_TEMPORARILY) || (lastResult == HttpStatus.SC_MOVED_PERMANENTLY)
                || (lastResult == HttpStatus.SC_SEE_OTHER) || (lastResult == HttpStatus.SC_TEMPORARY_REDIRECT)) {
            //????URL?
            Header header = method.getResponseHeader("location");
            if (header != null) {
                String newURI = header.getValue();
                if (StrUtil.isEmptyStr(newURI))
                    newURI = "http://" + ip + ":" + port + "/";

                //URL??IP??
                if (!newURI.startsWith("http"))
                    newURI = "http://" + ip + ":" + port + newURI;
                logger.warn("??" + newURI);
                method = new GetMethod(newURI);
                result = hClient.executeMethod(method);
            }
        }

        return result;
    }
}