怎样在Android访问php取回json数据

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1.[代码]php代码

1	$array=array(

2	'username'=>'杨铸',

3	'password'=>'123456',

4	'user_id'=>1

5

);

6	echojson_encode($array);

2.[代码]java代码

01	privatevoidstartUrlCheck(Stringusername,String password)

02

{

03	HttpClientclient =newDefaultHttpClient();

04	StringBuilderbuilder =newStringBuilder();

05

06	HttpGetmyget =newHttpGet("http://10.0.2.2/Android/index.php");

07

try{

08	HttpResponseresponse = client.execute(myget);

09	BufferedReaderreader =newBufferedReader(newInputStreamReader(

10	response.getEntity().getContent()));

11	for(Strings = reader.readLine(); s !=null;s = reader.readLine()) {

12	builder.append(s);

13

}

14	JSONObjectjsonObject =newJSONObject(builder.toString());

15	Stringre_username = jsonObject.getString("username");

16	Stringre_password = jsonObject.getString("password");

17	intre_user_id= jsonObject.getInt("user_id");

18	setTitle("用户id_"+re_user_id);

19	Log.v("urlresponse","true="+re_username);

20	Log.v("urlresponse","true="+re_password);

21	}catch(Exceptione) {

22	Log.v("urlresponse","false");

23	e.printStackTrace();

24

}

25

}

3.[代码]运行说明

01	其中http://10.0.2.2为Android访问本机url的ip地址。对应电脑上测试的http://127.0.0.1

02

03	另外执行代码时会抛出异常

04

05	java.net.SocketException:Permission denied

06

07	此为应用访问网络的权限不足在AndroidManifest.xml中，需要进行如下配置：

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

09

就加在

10	</manifest>

11

之前就好了

12

然后测试通过。