org.apache.http.conn.HttpHostConnectException: Connection to refused

在Android中提交数据到远程服务器时出现上面的提示：

代码：

private void dopost(String val){//封装数据Map<String, String> parmas = new HashMap<String, String>();parmas.put("name", val);DefaultHttpClient client = new DefaultHttpClient();//http客户端HttpPost httpPost = new HttpPost("http://mhycoe.com/test/post.php");ArrayList<BasicNameValuePair> pairs = new ArrayList<BasicNameValuePair>();if(parmas != null){Set<String> keys = parmas.keySet();for(Iterator<String> i = keys.iterator(); i.hasNext();) {String key = (String)i.next();pairs.add(new BasicNameValuePair(key, parmas.get(key)));}}try {UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(pairs, "utf-8");/**  将POST数据放入HTTP请求*/httpPost.setEntity(p_entity);/**  发出实际的HTTP POST请求*/HttpResponse response = client.execute(httpPost);HttpEntity entity = response.getEntity();InputStream content = entity.getContent();String returnConnection = convertStreamToString(content);show.setText(returnConnection);} catch (IllegalStateException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}private String convertStreamToString(InputStream is) {BufferedReader reader = new BufferedReader(new InputStreamReader(is));StringBuilder sb = new StringBuilder();String line = null;try {while ((line = reader.readLine()) != null) {sb.append(line);}} catch (IOException e) {e.printStackTrace();} finally {try {is.close();} catch (IOException e) {e.printStackTrace();}}return sb.toString();}

解决方法是增加网络访问权限：

找到 AndroidManifest.xml 文件。在application标签后面加上 <uses-permission android:name="android.permission.INTERNET"/>

转自：http://blog.csdn.net/brook0344/article/details/9366117

Android 权限相关的可以参考以下地方：

Android应用程序在使用很多功能的时候必须在Mainifest.xml中声明所需的权限，否则无法运行。下面是一个Mainifest.xml文件的例子：<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"  package="hi.braincol.local.filebrowser"  android:versionCode="1"  android:versionName="1.0.0">  <application android:icon="@drawable/icon" android:label="@string/app_name">  <activity android:name=".FileBrowser"  android:label="@string/app_name">  <intent-filter>  <action android:name="android.intent.action.MAIN" />  <category android:name="android.intent.category.LAUNCHER" />  </intent-filter>  </activity>  </application>  <uses-permission android:name="android.permission.ACCESS_SURFACE_FLINGER"/>  <uses-permission android:name="android.permission.VIBRATE"/>  </manifest> 上面xml文件中的: <uses-permission android:name=”android.permission.ACCESS_SURFACE_FLINGER”>
就是允许应用程序使用SurfaceFlinger的底层属性。Android中为应用程序准备了很多可选权限，下面是Android应用程序权限清单：android.permission.ACCESS_CHECKIN_PROPERTIES :
Allows read/write access to the “properties” table in the checkin database, to change values that get uploaded.
允许以read/write访问检入数据库（checkin database?）的"properties"表，并且可以更改、更新数据库。android.permission.ACCESS_COARSE_LOCATION :
Allows an application to access coarse(e.g, Cell-ID, WiFi) location.
允许一个应用程序通过访问CellID和WiFi热点等方式获取粗略的本地位置。android.permission.ACCESS_FINE_LOCATION :
Allows an application to access fine(e.g, GPS) location.
允许一个应用程序通过访问GPS等方式获取较精确的本地位置。android.permission.ACCESS_LOCATION_EXTRA_COMMANDS :
Allows an application to access extra location provider commands.
允许一个应用程序访问(使用)额外的本地位置服务提供者。android.permission.ACCESS_MOCK_LOCATION :
Allows an application to access mock location providers for testing.
允许一个应用程序访问（创建）模拟的位置服务提供者用于测试。android.permission.ACCESS_NETWORK_STATE :
Allows applications to access information about networks.
允许应用程序访问（获取）网络信息。android.permission.ACCESS_SURFACE_FLINGER :
Allows an application to use SurfaceFlinger’s low level features.
允许一个应用程序使用SurfaceFlinger的底层属性。（什么是SurfaceFlinger?）android.permission.ACCESS_WIFI_STATE :
Allows applications to access information about Wi-Fi networks.
允许应用程序获取Wi-Fi网络的信息）。android.permission.ACCOUNT_MANAGER :
Allows an applications to call into AccountAuthenticators.
允许一个应用程序启动账户认证。android.permission.AUTHERTICATE_ACCOUTS :
Allows an applicatons to act as an AccoutAuterticator for the AccoutManger.
允许一个应用程序充当账户认证管理者。android.permission.BATTERY_STATS :
Allows an application to collect battery statistics.
允许一个应用程序获取电池使用的统计信息(剩余电量、电池的耗电情况（各主要应用程序耗电占总耗电的百分比等）等)。android.permission.BIND_APPWIGET :
Allows an application to tell the AppWiget service which application can access AppWiget data.
允许一个应用程序告知AppWiget服务：我（当前应用程序）可以访问AppWiget数据。android.permission.BIND_DEVICE_ADMIN :
Must be required by device administration receiver, to ensure that only the system can interact with it.
设备管理服务必须拥有的权限，确保只有系统可以通过设备管理服务与设备进行互动（访问设备，数据交互）。android.permission.BIND_INPUT_METHOD :
Must be required by an InputMethodService, to ensure that only the system can bind to it.
输入法服务（InputMethodService）必须拥有的权限，确保只有系统可以绑定之。android.permission.BIND_WALLPAPER :
Must be required by a WallpaperService, to ensure that only the system can bind to it.
桌面服务（WallpaperService）必须拥有的权限，确保只有系统才可以绑定之.android.permission.BLUETOOTH :
Allows applications to connect to paired buletooth devices.
允许应用程序连接到已配对的蓝牙设备（远端蓝牙，非本机蓝牙）。android.permission.BULETOOTH_ADMIN :
Allows applications to discover an pair bluetooth devices.
允许应用程序搜索并且配对蓝牙设备。android.permission.BRICK :
Required to be able to disable the device (very dangrous!).
禁用设备必须拥有的权限（危险，慎用！）。android.permission.BROADCAST_PACKAGE_REMOVED :
Allows an application to boradcast a notification that an application package has been removed.
允许一个应用程序广播“一个（不是同一个）应用程序包已经被移除”的通告。（指一个应用程序已被卸装的通告？）android.permission.BROADCAST_SMS :
Allows an application to broadcast an SMS receipt notification.
允许一个应用程序广播一个短信回执（如：帅哥，你有一条新的短消息！）的通告。android.permission.BROADCAST_STICKY :
Allows an application to broadcast sticky intents.
允许一个应用程序广播常用(sticky?) intents.android.permission.WAP_PUSH :
Allows an application to broadcast a WAP PUSH receipt notification.
允许一个应用程序广播WAP PUSH回执通告。
说明：WAP-PUSH，WAP推送短信，是一种特殊格式的短信。WAP-PUSH可以将某一站点或某一业务的链接通过短息发送到支持WAP的设备，WAP PUSH实现了短信和WAP业务的结合。android.permission.CALL_PHONE :
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call being placed.
允许应用程序不经过用户拨号界面而直接拨号。android.permission.CALL_PRIVILEGED :
Allows an application to call any phone number, including emergency numbers, without going througth the Dialer user interface for confirm the call being palced.
允许应用程序不经过用户拨号界面而拨打任意号码（包括紧急号码）。（紧急号码是指哪些？）android.permission.CAMERA :
Required to be able to access the camera device.
访问摄像头设备必须具备的权限。android.permission.CHANGE_COMPONENT_ENABLED_STATE :
Allows an application to change whether an application component (other than its own) is enabled or not.
允许一个应用程序改变另一个应用程序组件的启用状态（禁用或启用）。android.permission.CHANGE_NETWORK_STATE :
Allows applications to change network connecitity state.
允许应用程序更改网络连接状态。android.permission.CHANGE_WIFIMULTICAST_STATE :
Allows applications to enter Wi-Fi Multicast mode.
允许应用程序进入Wi-Fi Multicast 模式。
说明：Multicast,多重广播，网络中的一个节点发出的信息被多个节点接收。android.permission.CHANGE_WIFI_STATE :
Allows applications to change Wi-Fi connectivity state.
允许应用程序更改Wi-Fi连接状态。android.permission.CLEAR_APP_CACHE :
Allows an application to clear the caches of all installed application on the device.
允许一个应用程序清理所有已安装程序的设备缓冲区 (是安装的时候使用的缓冲区，还是运行时候的缓冲区?)android.permission.CLEAR_APP_USER_DATA :
Allows an application to clear user data.
允许一个应用程序清理用户数据。android.perimmision.CONTROL_LOCATION_UPDATES :
Allows enabling/disabling location update notification from the radio.
允许启用/禁用位置更新的提示信息。（from the radio？ 通过电波获得的位置更新信息？）android.permission.DELETE_CACHE_FILES :
Allows an application to delete cache files.
允许一个应用程序删除cache文件。android.permission.DLEETE.PACKAGES :
Allows an application to delete packages.
允许一个应用程序删除packages（apk安装包？还是所有类型的压缩包？）android.permission.DEVICE_POWER :
Allows low-level access to power management.
允许访问底层的电源管理。android.permission.DIAGNOSTIC :
Allows application to RW to diagnostic resources.
允许应用程序读写诊断资源（diagnostic resources）。（什么事diagnostic resources?诊断信息，log？）android.permission.DISABLE_KEYGUARD :
Allows aplications to disable the keyguard.
允许应程序禁用键盘锁。android.permission.DUMP :
Allows an application to retrieve state dump information from system services.
允许一个应用程序从系统服务中抓取（检索）状态转储信息。（什么是state dump?将数据从一个设备转存到另外一个设备？）android.permission.EXPAND_STATUS_BAR :
Allows an applicaton to expand or collapse the status bar.
允许一个应用程序扩张或收缩状态栏。android.permission.FACTORY_TEST :
Run as an manufacturer test application, running as the root user.
允许像厂家测试程序那样以root用户权限运行应用程序。android.permission.FLSHLIGHT :
Allows access to the flashlight.
允许访问闪光信号灯。android.permission.FORCE_BACK :
Allows an application to force a BACK operation on whatever is the top activity.
允许一个应用程序在activity上强制执行一个回退操作，无论这个activity是否是顶层的activity。android.permission.GET_ACCOUNTS :
Allows access to the list of accouts in the Accounts Service.
允许访问账号服务的账号列表。android.permission.GET_PACKAGE_SIZE :
Allows an application to find out the space used by any package.
允许应用程序获得任何package占用的存储空间。android.permission.GET_TASKS :
Allows an appllication to get information about the currently or recently running tasks: a thumbnail representation of the tasks ,what activities are running in it, etc.
允许一个应用程序获得的当前或最近运行的任务信息：像在任务中运行了哪些activitys等一些简短信息。android.permission.GLBOAL_SEARCH :
This permission can be used on content providers to allow the global search system to access their data.
拥有该权限的content providers将允许全局搜索系统访问其数据。android.permission.HARDWARE_TEST :
Allows access to hardware peripherals.
允许访问外设。android.permission.INJECT_EVENTS :
Allows an application to inject user events (keys, touch, trackball) into the event stream and deliver them to ANY window.
允许一个应用程序向事件流（事件队列）注入用户事件（keys，touch，tarckball），并且将其传递给窗口。android.permission.INSTALL_LOCATION_PROVIDER :
Allows an application to install a locaton provider int the location Manager.
允许应用程序程序安装一个位置服务到位置管理器。androd.permission.INSTALL_PCAKAGES :
Allows an application to install packages.
允许一个应用程序安装packages。（用于版本升级的？）android.permission.INTERNAL_SYSTEM_WINDOW :
Allows an application to open windows that are for use by parts of the system user interface.
允许一个应用程序打开系统用户界面中的窗口。android.permission.INTERNET :
Allows application to open networkd sockets.
允许应用程序打开网络套接字（sockets）。android.permission.KILL_BACKGROUND_PROCESSES :
Allows an application to call killBackgroundProcesses(String).
允许应用程序调用killBackgroundProcesses(String)方法。android.permission.MANAGE_ACCOUNTS :
Allows an application to manage the list of accouts in the AccountManager.
允许应用程序管理AccountManager中的账户列表。android.permission.MANAGE_APP_TOKENS :
Allows an application to manage （create, destroy, Z-order) application tokens in the window manager.
允许一个应用程序管理（创建、销毁、Z-order）在窗口管理器中的应用程序图标。android.permission.MASTER_CLEAR:
none.
没任何描述。android.permisson.MODIFY_AUDIO_SETTINGS :
Allows an application to modify global audio settings.
允许一个应用程序更改全局音频设置。android.permission.MODIFY_PHONE_STATE :
Allows modification of the telephony state – power on, mmi, etc.
允许修改电话（手机？）状态——上电，人机界面（mmi,Man Machine Interface）等。 android.permission.MOUNT_FORMAT_FILESYSTEMS :
Allows formatting file sysytems for removable storage.
允许格式化移动存储设备。android.permission.MOUNT_UNMOUNT_FILESYSYTEMS :
Allows mounting and unmounting the file sysytems for removable storage.
允许加载或卸载移动存储设备。android.permission.FERSISTENT_ACTIVITY :
Allows an application to make its activities persistent.
允许一个应程序设置其activities具有持久性（persistent activities是什么样的activites?）。android.permission.PROCESS_OUTGOING_CALLS :
Allows an application to monitor, modify, or abort outgoing calls.
允许应用程序监视、修改、忽略拨出的电话(拨号)。android.permission.READ_CALENDAR :
Allows an application to read the user’s calendar data.
允许一个应用程序读取用户日历数据。android.permission.READ_CONTACTS :
Allows an apllication to read the user’s contacts data.
允许一个应用程序读取用户联系人列表。android.permission.READ_FRAME_BUFFER :
Allows an application to take screen shots and more generally get access to the frame buffer data.
允许一个应用程序通过访问帧缓冲区（一般一屏就是一帧）获取屏幕截图等帧数据。android.permission.READ_HISTORY_BOOKMARKS :
Allows an application to read (but not write) the user’s browsing history and bookmarks.
允许一个应用程序读取浏览器的历史记录和书签。android.permission.READ_INPUT_STATE :
Allows an application to retrieve the current state of keys and switches.
允许一个应用程序获取当前keys和switches的状态（keys、switchs都是输入设备）。android.permission.READ_LOGS :
Allows an application to read the low-level system log files.
允许一个应用程序读取底层系统的log文件。android.permission.READ_OWNER_DATA :
Allows an application to read the owner’s data.
允许一个应用程序读取所有者的数据。（手机的owner？）android.permission.READ_PHONE_STATE :
Allows read only access to phone state.
允许读取（不可写）手机状态。android.permission.READ_SMS :
Allows an application to read SMS messages.
允许一个应用程序读取手机短消息。android.permission.READ_SYNC_SETTING :
Allows applications to read the sync setting.
允许应用程序读取同步设置android.permission.READ_SYNC_STATS :
Allows applications to read sync stats.
允许一个应用程序读取同步状态。android.permission.REBOOT :
Required to be able to reboot the device.
重启设备必须具有的权限。android.permission.RECEIVE_BOOT_COMPLETED :
Allows an application to receive the ACTION_BOOT_COMPLETED that is boradcast after the sysytem finishes booting.
允许应用程序获取系统完全启动之后的ACTION_BOOT_COMPLETED广播。android.permission.RECEIVE_MMS :
Allows an application to monitor incoming MMS messages, to record or perform processing on them.
允许一个应用程序监控收到的彩信（MMS），记录或处理之。android.permission.RECEIVE_SMS :
Allows an application to monitor incoming SMS messages, to record or perform processing on them.
允许一个应用程序监控收到的短信（SMS），记录或处理之。android.permission.RECEIVE_WAP_PUSH :
Allows an application to monitor incoming WAP push messages.
允许一个应用程序监测接受的WAP-PSUH消息。android.permission.RECORD_AUDIO :
Allows an application to record audio.
允许一个应用程序录音。android.permission.REORERD_TASKS :
Allows an application to change the Z-order of tasks.
允许一个应用程序改变任务的Z-order(类似于优先级？)。android.permission.RESTART_PACKAGES :
This constant is deprecated. The restartPackage(String) API is no longer supported.
这个常量已不再使用，restartPackage这个API函数不再有效。android.permission.SEND_SMS :
Allows an application to send SMS messages.
允许应用程序发送短消息（SMS）。android.permission.SET_ACTIVITY_WATHCER :
Allows an application to watch and control how activities are started globally in system.
允许一个应用程序在全局系统中监控activities是如何被启动的。android.permission.SET_ALWAYS_FINISH :
Allows an application to control whether activities are immediately finished when put in the background.
允许应用程序无论activies是否刚刚结束，都将应用程序置于后台运行。（强制结束activies，置应用程序于后台运行？）android.permission.SET_ANIMATION_SCALE :
Modify the global animation scaling factor.
修改全局动画缩放比例。android.permission.SET_DEBUG_APP :
Configure an application for debugging.
为调试配置一个应用程序。android.permission.SET_ORIENTATION :
Allows low-level access to setting the orientation (actually rotation) of the screen.
允许设置屏幕方向（实际上就是旋转屏幕）。android.permission.SET_PREFERRED_APPLICATIONS :
This constant is deprecated, No longer useful, see addPackageToPreferred(String)for details.
这个常量已经无效了。android.permission.SET_PROCESS_LIMIT :
Allows application to set the maximum number of (not needed) application processes that can be runing.
允许应用程序设置最大可用进程数（不是必须的）。android.permission.SET_TIME :
Allows applications to set the system time.
允许应用程序设置系统时间。android.permission.SET_TIME_ZONE :
Allows applications to set the system time zone.
允许应用程序设置系统时区。android.permission.SET_WALLPAPER :
Allows applications to set the wallpaper.
允许应用程序设置桌面。android.permission.SET_WALLPAPER_HINTS :
Allows application to set wallpaper hints.
允许应用程序设置桌面提示。（wallpaper hints 是什么东东？） android.permission.SINGAL_PERSISTENT_PROCESSES :
Allows an application to request that a signal be sent to all persistent processes.
允许应用程序请求一个发送给所有持续进程的信号（signal）。（persistent processes 是什么样的进程？）android.permission.STATUS_BAR :
Allows an application to open, close, or disable the status bar and its icons.
允许一个应用程序打开、关闭、禁用状态栏和状态栏图标。android.permission.SUBSCRIBED_FEEDS_READ :
Allows an application to allow access the subscribed feeds ContentProvider.
允许一个应用程序访问订阅RSS feeds的ContentProvider。android.permission.SUBSRIBED_FEEDS_WRITE :
None.
没有任何描述。android.permission.SYSYTEM_ALERT_WINDOW :
Allows an application to open windows using the type TYPE_SYSTEM_ALERT, show on top of all other applications.
允许应用程序打开一个TYPE_SYSTEM_ALERT类型的系统警告（提示）窗口， 并将其置于顶层显示。android.permission.UPDATE_DEVICE_STATS :
Allows an application to update device statistics.
允许应用程序更新设备统计信息。android.permission.USE_CREDENTIALS :
Allows an application to request authtokens from the AccountManager.
允许一个应用程序向AccountManager申请授权标记。android.permission.VIBRATE :
Allows access to the vibrator.
允许访问振动器。android.permission.WAKE_LOCK :
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
允许使用PowerManager WakeLocks，避免处理器进入休眠，或屏幕变暗。android.permission.WRITE_APN_SETTINGS :
Allows applications to write the apn settings.
允许应用程序设置APN。
说明：APN（Acess Point Name）即“接入点名称”，用来标识GPRS的业务种类，目前分为两大类： CMWAP(通过GPRS访问WAP业务）、CMNET（除了WAP以外的服务目前都是CMNET,比如连接因特网等）。android.permission.WRITE_CALENDAR :
Allows an application to write (but not read) the user’s calendar data.
允许应用程序只写用户日历数据。android.permission.WRITE_CONTACTS :
Allows an application to write (but not read) the user’s contacts data.
允许应用程序只写用户联系人数据。android.permission.WRITE_EXTERNAL_STORAGE :
Allows an application to write to external storage.
允许应用程序写数据到外部存储设备(主要是SD卡)。android.permission.WRITE_GSERVICES :
Allows an application to modify the Google service map.
允许应用程序修改google地图服务。android.permission.WRITE_HISTORY_BOOKMARKS :
Allows an application to write (but not read) the user’s browsing history and bookmarks.
允许一个应用程序写数据到用户浏览器历史记录和书签。android.permission.WRITE_OWNER_DATA :
Allows an application to write (but not read) the owner’s data.
允许一个应用程序写入（填入）所有者（手机所有者？）的信息。android.permission.WRITE_SECURE_SETTINGS :
Allows an application to read or write the secure system settings.
允许一个应用程序读写系统安全设置。android.permission.WRITE_SETTINGS :
Allows an application to read or write the system setting.
允许一个应用程序读写系统设置。android.permission.WRITE_SMS :
Allows an application to write SMS messages.
允许一个应用程书写短消息。android.permisson.WRITE_SYNC_SETTING :
Allows applications to write the sync setting.

转自： http://www.360doc.com/content/13/0817/15/2569758_307820941.shtml

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