Android訪問php取回json數據實例

php代碼
復制代碼 代碼如下:
$array = array(
'username'=>'楊鑄',
'password'=>'123456',
'user_id'=>1
);
echo json_encode($array);

java代碼
復制代碼 代碼如下:
private void startUrlCheck(String username,String password)
{
HttpClient client = new DefaultHttpClient();
StringBuilder builder = new StringBuilder();
HttpGet myget = new HttpGet("http://10.0.2.2/Android/index.php");
try {
HttpResponse response = client.execute(myget);
BufferedReader reader = new BufferedReader(new InputStreamReader(
response.getEntity().getContent()));
for (String s = reader.readLine(); s != null; s = reader.readLine()) {
builder.append(s);
}
JSONObject jsonObject = new JSONObject(builder.toString());
String re_username = jsonObject.getString("username");
String re_password = jsonObject.getString("password");
int re_user_id = jsonObject.getInt("user_id");
setTitle("用戶id_"+re_user_id);
Log.v("url response", "true="+re_username);
Log.v("url response", "true="+re_password);
} catch (Exception e) {
Log.v("url response", "false");
e.printStackTrace();
}
}

運行說明
復制代碼 代碼如下:
其中http://10.0.2.2為Android訪問本機url的ip地址。對應電腦上測試的http://127.0.0.1
另外執行代碼時會拋出異常
java.net.SocketException: Permission denied
此為應用訪問網絡的權限不足 在AndroidManifest.xml中，需要進行如下配置：
<uses-permission Android:name="android.permission.INTERNET" />
就加在
</manifest>
之前就好了
然後測試通過。