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HttpClientUtil.java示例代码[Java]

Java Android请求通用函数
作者：xiezhongpian 阅读数：15096 上传时间：2017-05-09
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HttpClientUtil.java

package api.util;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

public class HttpClientUtil {
	private static String USER_AGENT = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; customie8)";

	// HTTP GET request
	public static String sendGet(String url, String charset) throws Exception {
		CloseableHttpClient client = null;
		StringBuffer result = null;
		try {
			client = HttpClients.createDefault();
			HttpGet request = new HttpGet(url);

			// add request header
			request.addHeader("User-Agent", USER_AGENT);

			HttpResponse response = client.execute(request);

			// System.out.println("Response Code : " +
			// response.getStatusLine().getStatusCode());
			BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), charset));

			result = new StringBuffer();
			String line = "";
			while ((line = rd.readLine()) != null) {
				result.append(line);
			}
			return result.toString();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			client.close();
		}
		return result.toString();
	}

	// HTTP POST request
	public static String sendPost(String url, List<NameValuePair> param, String charset) throws Exception {
		CloseableHttpClient client = null;
		StringBuffer result = null;
		try {
			client = HttpClients.createDefault();
			HttpPost post = new HttpPost(url);

			// add header
			post.setHeader("User-Agent", USER_AGENT);
			post.setEntity(new UrlEncodedFormEntity(param));
			HttpResponse response = client.execute(post);
			// System.out.println("Post parameters : " + post.getEntity());
			// System.out.println("Response Code : " +
			// response.getStatusLine().getStatusCode());

			BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), charset));
			result = new StringBuffer();
			String line = "";
			while ((line = rd.readLine()) != null) {
				result.append(line);
			}
			return result.toString();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			client.close();
		}
		return result.toString();
	}
}