本篇文章给大家分享的是有关java使用post方式如何实现访问后台服务器，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
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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().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);
return new DefaultHttpClient(ccm, params);
} catch (Exception e) {
return new DefaultHttpClient();
}
}
}以上就是java使用post方式如何实现访问后台服务器，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注创新互联行业资讯频道。
