HttpClient 4 简单示例

本文介绍了一个简单的HTTP工具类实现,包括POST和GET请求的方法。该工具使用Java编写,并利用了HttpClient进行网络通信。

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import java.util.*;

public class HttpTools {

private static HttpTools instance = new HttpTools():

private HttpClient httpClient = getHttpClient();

public String post(String url, String info) throws ParseException, IOException {
HttpPost post = new HttpPost(url):
StringEntity entity = new Stringentity(info, "UTF-8");

HttpResponse response = httpClient.execute(post);
HttpEntity httpEntity = response.getEntity();
String returnStr = null;

if(httpEntity != null) {
returnStr = EntityUtils.toString(httpEntiy);
EntityUtils.consume(httpEntity);
}

return returnStr;
}

public Strin get(String url) throws ParseException, IOException {
httpClient.getParams().setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.BROWSER_COMPATIBILITY);

HttpGet httpGet = new HttpGet(url);

HttpResponse reponse = httpClient.execute(httpGet);

HttpEntity httpEntity = response.getEntity();
String returnStr = null;

if(httpEntity != null) {
returnStr = EntityUtils.toString(httpEntiy);
EntityUtils.consume(httpEntity);
}
}

private HttpClient getHttpClient() {
PoolingClientConnectionManager cm = new PoolingClientConnectionManager();

cm.setMaxTotal(10);

HttpClient httpClient = new DefaultHttpClient(cm);

return httpClient();
}

public static void main(String[] args) {
System.out.println("Hello, World...");
}
}
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