实现从MSN Yahoo和Google导出用户联系人信息系列（4）—从Yahoo导出用户联系人(Step by Step) Setp 2 简单实现
接上节，在上节中，我们申请了自己的域名，并且在Yahoo Developer上将该域名注册得到了Oauth中的Consumer Key和Consumer secret，在这节里，我们将实现从Yahoo导出用户联系人信息。
首先准备本地的环境，1. 安装最新的Tomcat 当然其他的Servlert容器都可以 http 端口改为80。2 修改本地的C:\Windows\System32\drivers\etc\hosts 文件， 添加 127.0.0.1 advincenting.appspot.com（修改成你申请的域名）。
第一步：调用 Yahoo的 get_request_token 代码如下：
第二步：当用户登陆成功后，由于我们配置了CallBack URL 所有Yahoo会跳转到该JSP， 跳转回来 我们在调用 getToken API 获得Token 后就可以调用 getContact了
首先准备本地的环境，1. 安装最新的Tomcat 当然其他的Servlert容器都可以 http 端口改为80。2 修改本地的C:\Windows\System32\drivers\etc\hosts 文件， 添加 127.0.0.1 advincenting.appspot.com（修改成你申请的域名）。
第一步：调用 Yahoo的 get_request_token 代码如下：
1
![]()
String key
=
"
dj0yJmk9QTVZcVN4QmVFYUlRJmQ9WVdrOU5uVnpZa3BxTXpZbWNHbzlOakEyTURRek1Ua3gmcz1jb25zdW1lcnNlY3JldCZ4PTQ3
"
;// 这里是你注册Yahoo 返回的consumer Key
2![]()
String secret
=
"
2e8ac43ec5a506162a13acda0536d031cf94a9b4
"
;";// 这里是你注册Yahoo 返回的consumer secret
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String callback
=
"
http://advincenting.appspot.com/delauth/threelegged/yahoo.jsp
"
;
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String loginUrl
=
""
;
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String guid
=
""
;
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Map get_request_token
=
null
;
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String oauth_token_secret
=
(String)session.getAttribute(TOKENSECRET);
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String oauthToken
=
(String)session.getAttribute(TOKEN);
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session.removeAttribute(TOKENSECRET) ;
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session.removeAttribute(TOKEN) ;
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System.out.println(
"
@@@@@@@@@@@@@@@@@@@@@@@
"
+
oauthToken);
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String oauth_verifier
=
(String) request.getParameter(
"
oauth_verifier
"
);
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String oauth_token_request
=
(String) request.getParameter(
"
oauth_token
"
);
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String oauth_token4Setup4
=
""
;
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String oauth_token_secret_4Setup4
=
""
;
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ArrayList email
=
new
ArrayList();
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![]()
if
(oauthToken
==
null
||
oauthToken.equals(
""
))
{
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get_request_token = new HashMap();
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String reqUrl =
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"https://api.login.yahoo.com/oauth/v2/" + "get_request_token?" +
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"oauth_nonce=" + new Random().nextInt() + "&oauth_timestamp=" +
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((int)(System.currentTimeMillis() / 1000)) +
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"&oauth_consumer_key=" + key +
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"&oauth_signature_method=plaintext" + "&oauth_signature=" +
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secret + "%26" + "&oauth_version=1.0"+
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"&oauth_callback=http://advincenting.appspot.com/delauth/threelegged/yahoo.jsp"
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;
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System.out.println("############################## setup1: "+reqUrl);
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HttpClient client = new HttpClient();
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GetMethod getm = new GetMethod(reqUrl);
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String returnStr ="";
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![]()
try 
{
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client.executeMethod(getm);
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returnStr= getm.getResponseBodyAsString();
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![]()
} catch (HttpException e) {
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// TODO
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![]()
} catch (IOException e) {
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// TODO
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}
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String resp = returnStr;
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StringTokenizer st = new StringTokenizer(resp, "&");
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![]()
while (st.hasMoreTokens()) {
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String token = st.nextToken();
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get_request_token.put(token.substring(0, token.indexOf("=")),
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token.substring(token.indexOf("=") + 1,
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token.length()));
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}
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System.out.println("Map got : " + get_request_token);
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loginUrl =
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URLDecoder.decode((String)get_request_token.get("xoauth_request_auth_url")) +
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"&oauth_callback=" + callback;
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String oauthTokenTemp = (String) get_request_token.get("oauth_token");
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String oauth_token_secretTemp= (String) get_request_token.get("oauth_token_secret");
59![]()
System.out.println("%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%setup2: "+loginUrl);
通过第一步的调用我们就得到了 loginURL。然后我们可以让用户点击该Link 跳转到Yahoo登陆页面 <a href="<%= loginUrl %>">Sign in</a>2
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第二步：当用户登陆成功后，由于我们配置了CallBack URL 所有Yahoo会跳转到该JSP， 跳转回来 我们在调用 getToken API 获得Token 后就可以调用 getContact了
1
![]()
![]()
if
(oauthToken
!=
null
&&!
oauthToken.equals(
""
))
{
2![]()
Map accessMap = new HashMap();
3![]()
String accUrl = "https://api.login.yahoo.com/oauth/v2/get_token?"
4![]()
+ "&oauth_consumer_key=" + key
5![]()
+ "&oauth_signature_method=plaintext" + "&oauth_signature="
6![]()
+secret + "%26" +oauth_token_secret + "&oauth_version=1.0" + "&oauth_nonce="
7![]()
+ new Random().nextInt() + "&oauth_timestamp="
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+ ((int) (System.currentTimeMillis() / 1000)) + "&oauth_token="
9![]()
+ oauthToken+"&oauth_verifier="
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+ oauth_verifier;
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//System.out.println("oauth_verifier"+oauth_verifier);
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HttpClient client = new HttpClient();
13![]()
GetMethod getm = new GetMethod(accUrl);
14![]()
System.out.println("%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%setup3: "+accUrl);
15![]()
![]()
try {
16![]()
client.executeMethod(getm);
17![]()
byte[] responseBody = getm.getResponseBody();
18![]()
System.out.println(new String(responseBody));
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returnStr2 = URLDecoder.decode(new String(responseBody));
20![]()
//returnStr2= getm.getResponseBodyAsString();
21![]()
![]()
} catch (HttpException e) {
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// TODO
23![]()
![]()
} catch (IOException e) {
24![]()
// TODO
25![]()
}
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String resp =returnStr2;
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//System.out.println(resp);
29![]()
StringTokenizer st = new StringTokenizer(resp, "&");
30![]()
![]()
while (st.hasMoreTokens()) {
31![]()
String token = st.nextToken();
32![]()
accessMap.put((String)token.substring(0, token.indexOf("=")), (String)token.substring(token.indexOf("=") + 1, token.length()));
33![]()
}
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System.out.println("%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"+accessMap);
35![]()
guid = (String)accessMap.get("xoauth_yahoo_guid");
36![]()
// System.out.println("guid"+guid);
37![]()
oauth_token4Setup4 =(String)accessMap.get("oauth_token");
38![]()
oauth_token_secret_4Setup4 =(String)accessMap.get("oauth_token_secret");
第三步， 从上步，我们的到了 Token 和guid, 就可以调用getConttact API了
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![]()
![]()
if
(guid
!=
null
&&!
guid.equals(
""
))
{
2![]()
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//String guidGetContact = "F2YX2QFU7D46NA6IWQBKT5DVMA"; //TODO replace to the real guid
4![]()
String resourceURL = "http://social.yahooapis.com/v1/user/"+ guid+"/contacts";
5![]()
List<Map.Entry<String, String>> parameters2 = new ArrayList<Map.Entry<String, String>>();
6![]()
parameters2.add(new OAuth.Parameter(
7![]()
OAuth.OAUTH_SIGNATURE_METHOD,"HMAC-SHA1"));
8![]()
OAuthClient client = new OAuthClient(new HttpClient4());
9![]()
OAuthConsumer consumer = new OAuthConsumer(
10![]()
null,
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key,
12![]()
// consumer key
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secret, // consumer secret
14![]()
new OAuthServiceProvider(
15![]()
//
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"https://api.login.yahoo.com/oauth/v2/get_request_token", //
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"https://api.login.yahoo.com/oauth/v2/request_auth", //
18![]()
"https://api.login.yahoo.com/oauth/v2/get_token"));
19![]()
OAuthAccessor accessor = new OAuthAccessor(consumer);
20![]()
accessor.accessToken = oauth_token4Setup4;
21![]()
accessor.tokenSecret = oauth_token_secret_4Setup4;
22![]()
String httpMethod = OAuthMessage.GET;
23![]()
OAuthMessage os = client.invoke(accessor, httpMethod , resourceURL, parameters2);
24![]()
System.out.println("os==========" + os);
25![]()
System.out.println("os==========" + os.URL);
26![]()
HttpClient client4Invoke = new HttpClient();
27![]()
GetMethod getm = new GetMethod(os.URL);
28![]()
![]()
try {
29![]()
client4Invoke.executeMethod(getm);
30![]()
byte[] responseBody = getm.getResponseBody();
31![]()
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File outFile = new File("d:\\testYahoo.xml");
33![]()
FileOutputStream fops = new FileOutputStream(outFile);
34![]()
fops.write(responseBody);
35![]()
fops.close();
36![]()
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returnStrContact = URLDecoder.decode(new String(responseBody));
38![]()
//returnStr2= getm.getResponseBodyAsString();
39![]()
System.out.println(returnStrContact);
40![]()
![]()
} catch (HttpException e) {
41![]()
// TODO
42![]()
![]()
} catch (IOException e) {
43![]()
// TODO
44![]()
![]()
}finally{
45![]()
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}
47![]()
第四步，解析返回的XML格式的Contact
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![]()
2![]()
SAXReader saxReader
=
new
SAXReader();
3![]()
4![]()
Document document
=
null
;
5![]()
document
=
saxReader.read(
new
File(
"
d:\\testYahoo.xml
"
));
6![]()
Element root
=
document.getRootElement();
7![]()
int
num
=
-
1
;
8![]()
![]()
for
(Iterator iter
=
root.elementIterator(); iter.hasNext(); )
{
9![]()
Element element = (Element)iter.next();
10![]()
num++;
11![]()
System.out.println(element.elements("fields").size());
12![]()
List contactList = element.elements("fields");
13![]()
![]()
for(int i =0; i<contactList.size();i++){
14![]()
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Element elementTemp = (Element)contactList.get(i);
16![]()
![]()
if( elementTemp.element("type").getTextTrim().equals("email")){
17![]()
System.out.println(elementTemp.element("value").getTextTrim());
18![]()
email.add(elementTemp.element("value").getTextTrim());
19![]()
};
20![]()
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}
25![]()
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}
27![]()
System.out.println(email.size());
28![]()
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结果如下：
Setup 1：调用get_request_token 得到 loginURL 用户点击登陆
2. 登陆
3. 授权访问
4. CallBack到我们的JSP 然后调用getToken 得到Token和guid, 继续调用getContact API 获得Email等相关信息
从Yahoo导出用户联系简单的例子就完成了，后续章节里我们将继续讨论MSN Google的实现。在最后我们将重新设计集成从这三个站点导出联系人的实现。 完整例子下载
下载完整的例子到你本地，仅仅修改你本地host的文件就Ok了。