Android访问php webservice－用json等方式。

如果是PHP做的服务端，而我们要用android去访问，怎么办？当然可以用REST，但也可以用点笨的方法，比如可以让PHP的服务端返回JSON或XML数据，而Android端则可以用APACHE的httpclient去访问。下面是一个例子，假设...
如果是PHP做的服务端，而我们要用android去访问，怎么办？当然可以用REST，但也可以用点笨的方法，比如可以让PHP的服务端返回JSON或XML数据，而Android端则可以用APACHE的httpclient去访问。

下面是一个例子，假设数据表中users表有如下字段(mysql):
idusers,UserName,FullName

加点数据，然后在服务端建立一个webservice1.php，作用是直接返回服务端数据库的数据，如下：

则可以把数据表输出为JSON或者XML格式了，客户端的Android调用：

try

{

HttpParams httpParams =

new

BasicHttpParams();

HttpConnectionParams.setConnectionTimeout(httpParams, TIMEOUT_MILLISEC);

HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC);

HttpParams p =

new

BasicHttpParams();

p.setParameter(

"user"

,

"1"

);

HttpClient httpclient =

new

DefaultHttpClient(p);

String url =

"http://10.0.2.2:8082/myphp/phpWebservice/webservice1.php?user=1&format=json"

;

HttpPost httppost =

new

HttpPost(url);

try

{

Log.i(getClass().getSimpleName(),

"send task - start"

);

List nameValuePairs =

new

ArrayList(

2

);

nameValuePairs.add(

new

BasicNameValuePair(

"user"

,

"1"

));

httppost.setEntity(

new

UrlEncodedFormEntity(nameValuePairs));

ResponseHandler responseHandler =

new

BasicResponseHandler();

String responseBody = httpclient.execute(httppost, responseHandler);

// 解析JSON返回的 JSONObject json = new JSONObject(responseBody);

JSONArray jArray = json.getJSONArray(

"posts"

);

ArrayList> mylist =

new

ArrayList>();

for

(

int

i =

0

; i < jArray.length(); i++) {

HashMap map =

new

HashMap();

JSONObject e = jArray.getJSONObject(i);

String s = e.getString(

"post"

);

JSONObject jObject =

new

JSONObject(s);

map.put(

"idusers"

, jObject.getString(

"idusers"

));

map.put(

"UserName"

, jObject.getString(

"UserName"

));

map.put(

"FullName"

, jObject.getString(

"FullName"

));

mylist.add(map);

}

Toast.makeText(

this

, responseBody, Toast.LENGTH_LONG).show();

再搞个webservice2.php,该文件用来接受并保存客户端传送过来的JSON数据。

而Android客户端，可以构造JSON，发送到webservice2.php

try

{

JSONObject json =

new

JSONObject();

json.put(

"UserName"

,

"test2"

);

json.put(

"FullName"

,

"1234567"

);

HttpParams httpParams =

new

BasicHttpParams();

HttpConnectionParams.setConnectionTimeout(httpParams, TIMEOUT_MILLISEC);

HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC);

HttpClient client =

new

DefaultHttpClient(httpParams);

String url =

"http://10.0.2.2:8082//myphp/phpWebservice/webservice2.php"

;

HttpPost request =

new

HttpPost(url);

request.setEntity(

new

ByteArrayEntity(json.toString().getBytes(

"UTF8"

)));

request.setHeader(

"json"

, json.toString());

HttpResponse response = client.execute(request);

HttpEntity entity = response.getEntity();

if

(entity !=

null

) {

InputStream instream = entity.getContent();

String result = RestClient.convertStreamToString(instream);

Log.i(

"Read from server"

, result);

Toast.makeText(

this

, result,

Toast.LENGTH_LONG).show();

}

这样就可以把Android端发送的数据保存到服务端了