详解java中通过post方式访问后台服务器

详解java中通过post方式访问后台服务器

最近在学习java中通过post方式访问后台服务器，那么今天也算个学习笔记吧！

首先，上代码：

Runnable payRunnable = new Runnable()

{

@Override

public void run()

{

try

{

HashMap payParamMap = new HashMap();

payParamMap.put("canshu" ,"woshicanshu" );

String payParamStr = XmlUtils.toXml(payParamMap);//转换成xml格式

String resultStr = Utils.httpPost(UrlString, payParamStr);//调用访问函数

//resultStr 就是访问所得到的返回值

}

catch(Exception e)

{

e.printStackTrace();

}

}

};

// 必须异步调用

Thread payThread = new Thread(payRunnable);

payThread.start();

其次，上代码：

public class Utils {

private static final String TAG = "woshiTag";

public static String httpPost(String url, String entity) {

if (url == null || url.length() == 0) {

Log.e(TAG, "httpPost, url is null");

return null;

}

HttpClient httpClient = getNewHttpClient();

HttpPost httpPost = new HttpPost(url);

try {

httpPost.setEntity(new StringEntity(entity, HTTP.UTF_8));

httpPost.setHeader("Accept", "application/json");

httpPost.setHeader("Content-type", "application/json");

HttpResponse resp = httpClient.execute(httpPost);

if (resp.getStatusLine()http://.getStatusCode() != HttpStatus.SC_OK) {

Log.e(TAG, "httpGet fail, status code = " + resp.getStatusLine().getStatusCode());

return null;

}

return new String(EntityUtils.toByteArray(resp.getEntity()));

} catch (Exception e) {

Log.e(TAG, "httpPost exception, e = " + e.getMessage());

e.printStackTrace();

return null;

}

}

private static HttpClient getNewHttpClient() {

try {

KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());

trustStore.load(null, null);

SSLSocketFactory sf = new SSLSocketFactoryEx(trustStore);

sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);

HttpParams params = new BasicHttpParams();

HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);

HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);

SchemeRegistry registry = new SchemeRegistry();

registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));

registry.register(new Scheme("https", sf, 443));

ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);

reNiUdHdJturn new DefaultHttpClient(ccm, params);

} catch (Exception e) {

return new DefaultHttpClient();

}

}

}

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