Java使用新浪微博API通过账号密码方式登陆微博的实例

今天下了个新浪微博的API研究研究，目前实现了发布微博功能，包括带图片的微博。为了安全，新浪微博的API中并没有提供用微博帐号密码登录的功能，而是采用OAuth授权，用户通过浏览器访问新浪网站登录，登录成功后，浏览器再返回key和secret给程序。

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:layout_width="fill_parent"
 android:layout_height="wrap_content" android:id="@+id/login"
 android:text="登录" />
 <EditText android:id="@+id/status" android:layout_width="fill_parent"
 android:layout_height="300sp" android:hint="输入微博消息" />
 <Button android:layout_width="fill_parent"
 android:layout_height="wrap_content" android:id="@+id/send"
 android:text="发布" />
</LinearLayout>

一个登录按钮，一个输入框，一个发布按钮
因为要接收浏览器返回的数据，所以，AndroidManifest.xml注册Activity的时候要加个Intent-Filter

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.pocketdigi.weibo" android:versionCode="1"
 android:versionName="1.0">
 <uses-sdk android:minSdkVersion="7" />

 <application android:icon="@drawable/icon" android:label="@string/app_name">
 <activity android:name=".Main" android:label="@string/app_name">
  <intent-filter>
  <action android:name="android.intent.action.MAIN" />
  <category android:name="android.intent.category.LAUNCHER" />
  </intent-filter>
  <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="sina" android:host="weibo" />
  <!-- 监控sina://weibo这样的地址 -->
  </intent-filter>
 </activity>
 </application>
 <uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>

intent-filter必须分成两段写，如果合在一起写，就启动不了了。
为了简便，直接把新浪Sample里的OAuthConstant类拷过来：

package weibo4android.androidexamples;

import weibo4android.Weibo;
import weibo4android.http.AccessToken;
import weibo4android.http.RequestToken;

public class OAuthConstant {
 private static Weibo weibo=null;
 private static OAuthConstant instance=null;
 private RequestToken requestToken;
 private AccessToken accessToken;
 private String token;
 private String tokenSecret;
 private OAuthConstant(){};
 public static synchronized OAuthConstant getInstance(){
 if(instance==null)
  instance= new OAuthConstant();
 return instance;
 }
 public Weibo getWeibo(){
 if(weibo==null)
  weibo= new Weibo();
 return weibo;
 }

 public AccessToken getAccessToken() {
 return accessToken;
 }
 public void setAccessToken(AccessToken accessToken) {
 this.accessToken = accessToken;
 this.token=accessToken.getToken();
 this.tokenSecret=accessToken.getTokenSecret();
 }
 public RequestToken getRequestToken() {
 return requestToken;
 }
 public void setRequestToken(RequestToken requestToken) {
 this.requestToken = requestToken;
 }
 public String getToken() {
 return token;
 }
 public void setToken(String token) {
 this.token = token;
 }
 public String getTokenSecret() {
 return tokenSecret;
 }
 public void setTokenSecret(String tokenSecret) {
 this.tokenSecret = tokenSecret;
 }

}

接下来就是最关键的主程序：

package com.pocketdigi.weibo;

import java.io.File;

import weibo4android.Weibo;
import weibo4android.WeiboException;
import weibo4android.http.AccessToken;
import weibo4android.http.RequestToken;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class Main extends Activity {
 /** Called when the activity is first created. */
 String key = "", secret = "";
 Button login,send;
 EditText status;
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 System.setProperty("weibo4j.oauth.consumerKey", "3997936609");
 System.setProperty("weibo4j.oauth.consumerSecret",
  "8bc9e3bfd6ae8e3b2b8bda9079918950");
 //设置在新浪应用开放平台申请的应用的key和secret
 login=(Button)findViewById(R.id.login);
 send=(Button)findViewById(R.id.send);
 status=(EditText)findViewById(R.id.status);
 login.setOnClickListener(new OnClickListener(){

  @Override
  public void onClick(View v) {
  // TODO Auto-generated method stub
  login();
  //登录
  }});
 send.setOnClickListener(new OnClickListener(){

  @Override
  public void onClick(View v) {
  // TODO Auto-generated method stub
  String text=String.valueOf(status.getText());
  Weibo weibo = new Weibo();
  weibo.setToken(key,secret);
  try {
   //weibo.updateStatus(text);
   //只发文字
   File f=new File("/sdcard/wallpaper/129567208597069400.jpg");
   weibo.uploadStatus(text,f );
   //发文字+图片，这里需要导入commons-httpclient-3.0.1.jar，自己网上下
   //在实际项目上，最好放Thread里，因为按下去的时候按钮会卡
  } catch (WeiboException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  }});
 }

 @Override
 protected void onStart() {
 // TODO Auto-generated method stub
 super.onStart();
 //启动时执行检测是否来自网页登录返回
 //如果是，获取key和secret
 //否则读取SharedPreferences
 //若得不到key和secret，直接跳转登录
 Uri uri = this.getIntent().getData();
 if (uri != null) {
  //如果是浏览器返回
  try {
  RequestToken requestToken = OAuthConstant.getInstance()
   .getRequestToken();
  AccessToken accessToken = requestToken.getAccessToken(uri
   .getQueryParameter("oauth_verifier"));
  OAuthConstant.getInstance().setAccessToken(accessToken);
  // 保存
  Editor sharedata = getSharedPreferences("WeiBo", 0).edit();
  sharedata.putString("key", accessToken.getToken());
  sharedata.putString("secret", accessToken.getTokenSecret());
  sharedata.commit();
  key = accessToken.getToken();
  secret = accessToken.getTokenSecret();
  } catch (WeiboException e) {
  e.printStackTrace();
  }
 } else {
  //如果是用户自己启动
  SharedPreferences settings = getSharedPreferences("WeiBo", 0);
  key = settings.getString("key", "");
  secret = settings.getString("secret", "");
 }
 if (key.equals("") || secret.equals("")) {
  Toast.makeText(this, "尚未登录", Toast.LENGTH_LONG).show();
  login();
  //跳转到浏览器登录

 }

 }
 public void login(){
   Weibo weibo = OAuthConstant.getInstance().getWeibo();
   RequestToken requestToken;
 try {
  requestToken =weibo.getOAuthRequestToken("sina://weibo");
  //为了避免与同类应用冲突，还是自己改下URI吧
  Uri uri2 = Uri.parse(requestToken.getAuthenticationURL()+ "&from=xweibo");
  OAuthConstant.getInstance().setRequestToken(requestToken);
  startActivity(new Intent(Intent.ACTION_VIEW, uri2));
 } catch (WeiboException e) {
  e.printStackTrace();
 }
 }
}

发图片需要导入commons-httpclient-3.0.1.jar，否则启动报错，当然weibo4android-1.2.0.jar是不可少的