Apache HttpClient 代理、登陆访问百度开放平台

   最近做了下使用httpclient登陆百度开放平台获取GisPOI数据,途中遇到了一些问题。做完了和大家分享一下，有哪些理解不对的地方请大家指教。

功能：使用httpclient登陆百度账户访问开放平台获取POI数据
环境：httpclient: httpclient-3.1
开发工具：eclipse
引用的jar包：

引用

commons-httpclient-3.1.jar
commons-logging.jar
commons-codec-1.3.jar

java代码：

package org.qhy.test;

import java.io.IOException;
import java.net.URLEncoder;

import org.apache.commons.httpclient.Cookie;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScope;
import org.apache.commons.httpclient.cookie.CookiePolicy;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;

public class TestInvokeBaiduLogin {

	public static void main(String[] args) throws HttpException, IOException {
		// 创建httpClient客户端
		HttpClient client = new HttpClient();
		// 百度的登陆url
		String loginUrl = "https://passport.baidu.com/v2/api/?login";
		// 设置代理
		String httpProxyHost = "10.1.xx.xx";
		int proxyPort = 1010;
		client.getHostConfiguration().setProxy(httpProxyHost, proxyPort);
		// 代理验证信息
		client.getParams().setAuthenticationPreemptive(true);
		UsernamePasswordCredentials creds = new UsernamePasswordCredentials(
				"username", "password");
		client.getState().setProxyCredentials(AuthScope.ANY, creds);
		// 代理设置结束(如果不需要代理这段可以注释掉)
		// 登陆百度
		PostMethod psotMethod = new PostMethod(loginUrl);
		// 设置登陆参数
		NameValuePair[] data = {
				new NameValuePair("class", "login"),
				new NameValuePair("tpl", "mn"),
				new NameValuePair("tangram", "true"),
				new NameValuePair("isPhone", "false"),
				new NameValuePair("loginType", "1"),
				new NameValuePair("token", "f6994339731518f4c50d30acc10cbc6f"),
				new NameValuePair("callback",
						"parent.bdPass.api.login._postCallback"),
				new NameValuePair("username", "xxxxx"),
				new NameValuePair("password", "xxx") };
		psotMethod.setRequestBody(data);
		// HttpClient像浏览器一样接收 Cookie,
		client.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY);
		client.executeMethod(psotMethod);
		Header[] haeders = psotMethod.getRequestHeaders();
		// 获取cookie
		Cookie[] cookies = client.getState().getCookies();
		String cookiesStr = "";
		for (Cookie c : cookies) {
			cookiesStr += c.toString() + ";";
		}
		System.out.println("psotMethod--response:"
				+ new String(psotMethod.getResponseBody(), "UTF-8"));
		psotMethod.releaseConnection();
		// 使用 GET 方法 ，如果服务器需要通过 HTTPS 连接，那只需要将下面 URL 中的 http 换成 https
		HttpMethod method = new GetMethod(
				"http://api.map.baidu.com/place/v2/search?&q="
						+ URLEncoder.encode("饭店", "UTF-8") + "&region="
						+ URLEncoder.encode("北京", "UTF-8")
						+ "&output=json&ak=1649c026d0cea10ccf5741348526cb44");
		method.setRequestHeader("Cookie", cookiesStr);
		method.getParams().setBooleanParameter(
				HttpMethodParams.SINGLE_COOKIE_HEADER, true);
		client.executeMethod(method);
		// 打印 服务器状态
		System.out.println("状态：" + method.getStatusLine());
		// 打印信息
		System.out.println("内容:"
				+ new String(method.getResponseBody(), "UTF-8"));
		// 关闭连接
		method.releaseConnection();
	}
}

运行结果：

引用

2014-4-23 17:28:26 org.apache.commons.httpclient.HttpMethodDirector authenticateHost
警告: Required credentials not available for BASIC <any realm>@api.map.baidu.com:80
2014-4-23 17:28:26 org.apache.commons.httpclient.HttpMethodDirector authenticateHost
警告: Preemptive authentication requested but no default credentials available
状态：HTTP/1.0 200 OK
内容:{
    "status":0,
    "message":"ok",
    "results":[
        {
            "name":"晚秋",
            "location":{
                "lat":39.963643,
                "lng":116.328947
            },
            "address":"海淀区中关村南大街9号理工科技大厦1楼",
            "street_id":"850815e174e4178243e19202",
            "uid":"850815e174e4178243e19202"
        },
        {
            "name":"蓝港饭庄",
            "location":{
                "lat":39.954199,
                "lng":116.479906
            },
            "address":"北京市朝阳区朝阳公园路6号",
            "street_id":"50fb64ffe16b1144e9f8536d",
            "telephone":"[phone],[phone]",
            "uid":"50fb64ffe16b1144e9f8536d"
        },
        {
            "name":"上庄水库（北岸韩式饭庄）",
            "location":{
                "lat":40.10668,
                "lng":116.214358
            },
            "address":"上庄镇上庄水库大桥南岸往西400米",
            "street_id":"f633606af167004d0b69d92b",
            "telephone":"15801636650",
            "uid":"f633606af167004d0b69d92b"
        },
        {
            "name":"北京饭店",
            "location":{
                "lat":39.915258,
                "lng":116.416697
            },
            "address":"北京市东城区东长安街33号",
            "street_id":"b9e5d0b8a5ffcea581a12e38",
            "telephone":"[phone]",
            "uid":"b9e5d0b8a5ffcea581a12e38"
        },
        {
            "name":"翠宫饭店（康乐部）",
            "location":{
                "lat":39.981772,
                "lng":116.338918
            },
            "address":"海淀区知春路76号",
            "street_id":"af1ae56b4fb679124207c14f",
            "telephone":"[phone]",
            "uid":"af1ae56b4fb679124207c14f"
        },
        {
            "name":"北京特产(北京华夏明珠宾馆写字楼东)",
            "location":{
                "lat":39.901864,
                "lng":116.32936
            },
            "address":"广莲路13号附近",
            "street_id":"f1569f0df942537241d63e46",
            "telephone":"63274484",
            "uid":"f1569f0df942537241d63e46"
        },
        {
            "name":"乔家大院(建外大街店)",
            "location":{
                "lat":39.911266,
                "lng":116.449782
            },
            "address":"建华南路11号",
            "street_id":"923ffd004ae07aaed92f283e",
            "telephone":"[phone]",
            "uid":"923ffd004ae07aaed92f283e"
        },
        {
            "name":"西苑饭店",
            "location":{
                "lat":39.942936,
                "lng":116.33884
            },
            "address":"北京市海淀区三里河路1号(近北京首都体育馆和北京动物园)",
            "street_id":"eb3675036510d10201ec0197",
            "telephone":"010-68313388,010-68314577",
            "uid":"eb3675036510d10201ec0197"
        },
        {
            "name":"世纪金源大饭店",
            "location":{
                "lat":39.959377,
                "lng":116.287224
            },
            "address":"北京市北京海淀板井路69号",
            "telephone":"[phone],13901257698",
            "uid":"1816533449feda1dfa2d619e"
        },
        {
            "name":"Burberry(金茂北京威斯汀大饭店南)",
            "location":{
                "lat":39.955057,
                "lng":116.466512
            },
            "address":"中国北京市朝阳区新源南路1号都汇天地首层L15号商铺",
            "street_id":"dffd631c68351da538221c5a",
            "telephone":"[phone]",
            "uid":"dffd631c68351da538221c5a"
        }
    ]
}