一、代码流程

1.组织好sign-post需要的token,secrect

2.组织好发微博需要的信息

3.用sign-post进行签名

4.把签名结果从header中拿出来，转成entity，用httpclient以post的形式发送微博

二、简介

三、代码
1.xml
(1)activity_main.xml

 <?xml version="1.0" encoding="utf-8"?>

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

     android:orientation="vertical"

     android:layout_width="fill_parent"

     android:layout_height="fill_parent"

     >

         <Button android:id="@+id/btn_launch_oauth"

                 android:layout_width="wrap_content"

                 android:layout_height="wrap_content"

                 android:text="Launch OAuth Flow"/>

         <Button

                 android:id="@+id/btn_sendWeiBo"

                 android:layout_width="wrap_content"

                 android:layout_height="wrap_content"

                 android:text="发送一条微博消息"

         />

 </LinearLayout>

(2)AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

      package="org.marsdroid.oauth03"

      android:versionCode="1"

      android:versionName="1.0">

    <uses-sdk android:minSdkVersion="10" />

    <uses-permission android:name="android.permission.INTERNET" />

    <uses-permission android:name="android.permission.READ_CONTACTS" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">

        <activity android:name=".MainActivity" android:label="@string/app_name">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <activity android:name=".PrepareRequestTokenActivity" android:launchMode="singleTask">

            <intent-filter>

                <action android:name="android.intent.action.VIEW" />

                <category android:name="android.intent.category.DEFAULT" />

                <category android:name="android.intent.category.BROWSABLE" />

                <data android:scheme="x-oauthflow" android:host="callback" />

            </intent-filter>

        </activity>

    </application>

</manifest>

2.java
(1)MainActivity.java

 package org.marsdroid.oauth03;

 import java.util.ArrayList;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import oauth.signpost.OAuth;

 import android.app.Activity;

 import android.content.Intent;

 import android.content.SharedPreferences;

 import android.os.Bundle;

 import android.preference.PreferenceManager;

 import android.view.View;

 import android.view.View.OnClickListener;

 import android.widget.Button;

 public class MainActivity extends Activity {

     final String TAG = getClass().getName();

     private SharedPreferences prefs;

     /** Called when the activity is first created. */

     @Override

     public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.main);

         prefs = PreferenceManager.getDefaultSharedPreferences(this);

         Button launchOauth = (Button) findViewById(R.id.btn_launch_oauth);

         Button sendWeiBoButton = (Button)findViewById(R.id.btn_sendWeiBo);

         sendWeiBoButton.setOnClickListener(new OnClickListener() {

             @Override

             public void onClick(View v) {

                 //收集需要向腾讯微博服务器端发送的数据

                 Map<String,String> map = new HashMap<String,String>();

                 map.put("content", "test");

                 map.put("clientip", "127.0.0.1");

                 map.put("format", "json");

                 //URL编码

                 List<String> decodeNames = new ArrayList<String>();

                 decodeNames.add("oauth_signature");//最后生成的oauth_signature可以包含“=“等，所以要进行url编码

                 //生成WeiboClient对象需要四个参数:Consumer_key,Consumer_key_secret,Oauth_tokent,OAuth_token_secret

                 String OAuth_token = prefs.getString(OAuth.OAUTH_TOKEN, "");

                 String OAuth_token_secret = prefs.getString(OAuth.OAUTH_TOKEN_SECRET, "");

                 WeiBoClient weiBoClient = new WeiBoClient(Constants.CONSUMER_KEY, Constants.CONSUMER_SECRET, OAuth_token, OAuth_token_secret);

                 weiBoClient.doPost("http://open.t.qq.com/api/t/add",map,decodeNames);

             }

         });

         launchOauth.setOnClickListener(new OnClickListener() {

             public void onClick(View v) {

                 startActivity(new Intent().setClass(v.getContext(), PrepareRequestTokenActivity.class));

             }

         });

     }

(2)Constants.java

 package org.marsdroid.oauth03;

 public class Constants {

     public static final String CONSUMER_KEY = "99e9494ff07e42489f4ace16b63e1f47";

     public static final String CONSUMER_SECRET     = "154f6f9ab4c1cf527f8ad8ab1f8e1ec9";

     public static final String REQUEST_URL         = "https://open.t.qq.com/cgi-bin/request_token";

     public static final String ACCESS_URL         = "https://open.t.qq.com/cgi-bin/access_token";

     public static final String AUTHORIZE_URL     = "https://open.t.qq.com/cgi-bin/authorize";

     public static final String ENCODING         = "UTF-8";

     public static final String    OAUTH_CALLBACK_SCHEME    = "x-oauthflow";

     public static final String    OAUTH_CALLBACK_HOST        = "callback";

     public static final String    OAUTH_CALLBACK_URL        = OAUTH_CALLBACK_SCHEME + "://" + OAUTH_CALLBACK_HOST;

 }

(3)WeiBoClient.java

 import java.util.List;

 import java.util.Map;

 import oauth.signpost.OAuthConsumer;

 import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer;

 import org.apache.http.Header;

 import org.apache.http.HttpEntity;

 import org.apache.http.HttpResponse;

 import org.apache.http.NameValuePair;

 import org.apache.http.client.entity.UrlEncodedFormEntity;

 import org.apache.http.client.methods.HttpPost;

 import org.apache.http.impl.client.DefaultHttpClient;

 import org.marsdroid.oauth03.utils.ApacheUtils;

 import org.marsdroid.oauth03.utils.HttpUtils;

 import org.marsdroid.oauth03.utils.OAuthUtils;

 import org.marsdroid.oauth03.utils.StringUtils;

 public class WeiBoClient {

     private OAuthConsumer consumer;

     public WeiBoClient(){

     }

     public WeiBoClient(String consumerKey,String consumerSecret,String oauthToken,String oauthTokenSecret){

         //生成一个OAuthConsumer对象

         consumer = new CommonsHttpOAuthConsumer(consumerKey, consumerSecret);

         //设置OAuth_Token和OAuth_Token_Secret

         consumer.setTokenWithSecret(oauthToken, oauthTokenSecret);

     }

     public String doPost(String url,Map<String,String> addtionalParams,List<String> decodeNames){

         //生成一个HttpPost对象

         HttpPost postRequest = new HttpPost(url);

         //把腾讯微博所需要的数据也加上

         consumer = OAuthUtils.addAddtionalParametersFromMap(consumer, addtionalParams);

         try {

             //用sing-post对信息签名，sing-post会把签名结果放到header中，但腾讯不支持

             consumer.sign(postRequest);

         } catch (Exception e) {

             e.printStackTrace();

         }

         Header oauthHeader = postRequest.getFirstHeader("Authorization");

         System.out.println(oauthHeader.getValue());

         String baseString = oauthHeader.getValue().substring(5).trim();

         Map<String,String> oauthMap = StringUtils.parseMapFromString(baseString);

         oauthMap = HttpUtils.decodeByDecodeNames(decodeNames, oauthMap);

         addtionalParams = HttpUtils.decodeByDecodeNames(decodeNames, addtionalParams);

         List<NameValuePair> pairs = ApacheUtils.convertMapToNameValuePairs(oauthMap);

         List<NameValuePair> weiboPairs = ApacheUtils.convertMapToNameValuePairs(addtionalParams);

         pairs.addAll(weiboPairs);

         HttpEntity entity = null;

         HttpResponse response = null;

         try {

             entity = new UrlEncodedFormEntity(pairs);

             postRequest.setEntity(entity);

             response = new DefaultHttpClient().execute(postRequest);

         } catch (Exception e) {

             e.printStackTrace();

         }

         String result = ApacheUtils.getResponseText(response); 

         return result;

     }

 }

(4)ApacheUtils.java

 package org.marsdroid.oauth03.utils;

 import java.io.BufferedReader;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.util.ArrayList;

 import java.util.Iterator;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 import org.apache.http.HttpEntity;

 import org.apache.http.HttpResponse;

 import org.apache.http.NameValuePair;

 import org.apache.http.message.BasicNameValuePair;

 public class ApacheUtils {

     public static List<NameValuePair> convertMapToNameValuePairs(Map<String, String> oauthMap) {

         List<NameValuePair> pairs = new ArrayList<NameValuePair>();

         Set<String> keys = oauthMap.keySet();

         Iterator<String> it = keys.iterator();

         while(it.hasNext()){

             String key = it.next();

             String value = oauthMap.get(key);

             NameValuePair pair = new BasicNameValuePair(key, value);

             pairs.add(pair);

         }

         return pairs;

     }

     public static String getResponseText(HttpResponse response) {

         HttpEntity responseEntity = response.getEntity();

         InputStream input = null;

         String result = null;

         try {

             input = responseEntity.getContent();

             BufferedReader reader = new BufferedReader(new InputStreamReader(input));

             String line = null;

             StringBuffer sb = new StringBuffer();

             while((line = reader.readLine()) != null){

                 sb.append(line);

             }

             result = sb.toString();

             System.out.println("reuslt---->" + result);

         } catch (Exception e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         }

         return result;

     }

     public static String parseStringFromEntity(HttpEntity entity){

         String result = null;

         try{

             InputStream input = entity.getContent();

             BufferedReader reader = new BufferedReader(new InputStreamReader(input));

             String line = null;

             StringBuffer sb = new StringBuffer();

             while((line = reader.readLine()) != null){

                 sb.append(line);

             }

             result = sb.toString();

         }

         catch(Exception e){

             System.out.println(e);

         }

         return result;

     }

 }

(5)HttpUtils.java

 import java.net.URLDecoder;

 import java.util.Iterator;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 public class HttpUtils {

     public static Map<String,String> decodeByDecodeNames(List<String> decodeNames,Map<String,String> map){

         Set<String> keys = map.keySet();

         Iterator<String> it = keys.iterator();

         while (it.hasNext()) {

             String key = it.next();

             String value = map.get(key);

             for(String decodeName : decodeNames){

                 if(key.equals(decodeName)){

                     value = URLDecoder.decode(value);

                     map.put(key, value);

                 }

             }

         }

         return map;

     }

 }

(6)OAuthUtils.java

 import java.util.Iterator;

 import java.util.Map;

 import java.util.Set;

 import oauth.signpost.OAuthConsumer;

 import oauth.signpost.http.HttpParameters;

 public class OAuthUtils {

     public static OAuthConsumer addAddtionalParametersFromMap(OAuthConsumer consumer,

             Map<String, String> addtionalParams) {

         Set<String> keys = addtionalParams.keySet();

         Iterator<String> it = keys.iterator();

         HttpParameters httpParameters = new HttpParameters();

         while(it.hasNext()){

             String key = it.next();

             String value = addtionalParams.get(key);

             httpParameters.put(key, value);

         }

         consumer.setAdditionalParameters(httpParameters);

         return consumer;

     }

 }

(7)StringUtils.java

 import java.util.HashMap;

 import java.util.Map;

 public class StringUtils {

     //key1="value1",key2="value2"........

     public static Map<String,String> parseMapFromString(String baseString) {

         String [] arr = baseString.split(",");

         Map<String,String > result = new HashMap<String,String>();

         for (int i = 0; i < arr.length; i++) {

             String temp [] = arr[i].split("=");

             String key = temp[0].trim();

             //去掉双引号

             String value = temp[1].substring(1, temp[1].length()-1);

             result.put(key, value);

         }

         return result;

     }

 }

(8)UrlUtils.java

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 import org.apache.http.NameValuePair;

 import org.apache.http.client.utils.URLEncodedUtils;

 import org.apache.http.message.BasicNameValuePair;

 public class UrlUtils {

     public static String buildQueryString(Map<String,String> map){

         List<NameValuePair> pairs = buildNameValuePairs(map);

         String queryStr = URLEncodedUtils.format(pairs, "UTF-8");

         return queryStr;

     }

     public static String buildUrlByQueryStringAndBaseUrl(String baseUrl,String queryString){

         return baseUrl + "?" + queryString;

     }

     public static String buildUrlByQueryStringMapAndBaseUrl(String baseUrl,Map<String,String> map){

         return buildUrlByQueryStringAndBaseUrl(baseUrl, buildQueryString(map));

     }

     public static List<NameValuePair> buildNameValuePairs(Map<String,String> map){

         Set<String> keySet = map.keySet();

         List<NameValuePair> pairs = new ArrayList<NameValuePair>();

         for(String key: keySet){

             NameValuePair pair = new BasicNameValuePair(key, map.get(key));

             pairs.add(pair);

         }

         return pairs;

     }

 }

(9)OAuthRequestTokenTask.java

 import oauth.signpost.OAuthConsumer;

 import oauth.signpost.OAuthProvider;

 import android.content.Context;

 import android.content.Intent;

 import android.net.Uri;

 import android.os.AsyncTask;

 public class OAuthRequestTokenTask extends AsyncTask<Void, Void, Void>{

     private Context context;

     private OAuthConsumer consumer;

     private OAuthProvider provider;

     public OAuthRequestTokenTask(Context context, OAuthConsumer consumer,

             OAuthProvider provider) {

         super();

         this.context = context;

         this.consumer = consumer;

         this.provider = provider;

     }

     @Override

     protected Void doInBackground(Void... params) {

         // TODO Auto-generated method stub

         try {

             System.out.println("请求Request Token之前" + consumer.getToken());

             final String url = provider.retrieveRequestToken(consumer, Constants.OAUTH_CALLBACK_URL);

             System.out.println("请求Request Toker之后" + consumer.getToken());

             System.out.println("url---->" + url);

             Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)).setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_FROM_BACKGROUND);

             context.startActivity(intent);

         } catch(Exception e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         }

         return null;

     }

 }

(10)PrepareRequestTokenActivity.java

 import oauth.signpost.OAuthConsumer;

 import oauth.signpost.OAuthProvider;

 import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer;

 import oauth.signpost.commonshttp.CommonsHttpOAuthProvider;

 import android.app.Activity;

 import android.content.Intent;

 import android.content.SharedPreferences;

 import android.net.Uri;

 import android.os.Bundle;

 import android.preference.PreferenceManager;

 public class PrepareRequestTokenActivity extends Activity {

     private OAuthConsumer consumer;

     private OAuthProvider provider;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         // TODO Auto-generated method stub

         super.onCreate(savedInstanceState);

         System.setProperty("debug", "true");

         consumer = new CommonsHttpOAuthConsumer(Constants.CONSUMER_KEY,

                 Constants.CONSUMER_SECRET);

         provider = new CommonsHttpOAuthProvider(Constants.REQUEST_URL,

                 Constants.ACCESS_URL, Constants.AUTHORIZE_URL);

         new OAuthRequestTokenTask(this, consumer, provider).execute();

     }

     @Override

     public void onNewIntent(Intent intent) {

         super.onNewIntent(intent);

         SharedPreferences prefs = PreferenceManager

                 .getDefaultSharedPreferences(this);

         final Uri uri = intent.getData();

         System.out.println(uri.toString());

         if (uri != null

                 && uri.getScheme().equals(Constants.OAUTH_CALLBACK_SCHEME)) {

             new RetrieveAccessTokenTask(this, consumer, provider, prefs)

                     .execute(uri);

             finish();

         }

     }

 }

(11)RetrieveAccessTokenTask.java

 import oauth.signpost.OAuth;

 import oauth.signpost.OAuthConsumer;

 import oauth.signpost.OAuthProvider;

 import android.content.Context;

 import android.content.Intent;

 import android.content.SharedPreferences;

 import android.content.SharedPreferences.Editor;

 import android.net.Uri;

 import android.os.AsyncTask;

 import android.util.Log;

 public class RetrieveAccessTokenTask extends AsyncTask<Uri, Void, Void> {

     final String TAG = "OAuth";

     private Context    context;

     private OAuthProvider provider;

     private OAuthConsumer consumer;

     private SharedPreferences prefs;

     public RetrieveAccessTokenTask(Context context, OAuthConsumer consumer,OAuthProvider provider, SharedPreferences prefs) {

         this.context = context;

         this.consumer = consumer;

         this.provider = provider;

         this.prefs=prefs;

     }

     @Override

     protected Void doInBackground(Uri...params) {

         final Uri uri = params[0];

         System.out.println(getClass().getName());

         final String oauth_verifier = uri.getQueryParameter(OAuth.OAUTH_VERIFIER);

         try {

             provider.retrieveAccessToken(consumer, oauth_verifier);

             final Editor edit = prefs.edit();

             edit.putString(OAuth.OAUTH_TOKEN, consumer.getToken());

             edit.putString(OAuth.OAUTH_TOKEN_SECRET, consumer.getTokenSecret());

             edit.commit();

             String token = prefs.getString(OAuth.OAUTH_TOKEN, "");

             String secret = prefs.getString(OAuth.OAUTH_TOKEN_SECRET, "");

             consumer.setTokenWithSecret(token, secret);

             context.startActivity(new Intent(context,MainActivity.class));

             Log.i(TAG, "OAuth - Access Token Retrieved");

             System.out.println("------------>" + provider.getAccessTokenEndpointUrl());

         } catch (Exception e) {

             Log.e(TAG, "OAuth - Access Token Retrieval Error", e);

         }

         return null;

     }

 }

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