新版apache HttpClient调用http接口

最新推荐文章于 2025-05-21 18:40:53 发布

brittany2009

最新推荐文章于 2025-05-21 18:40:53 发布

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分类专栏： JAVA HttpClient HttpGet HttpPost HttpHost CredentialsProvider 文章标签： java json

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本文介绍了在新项目中使用最新版Apache HttpClient来调用HTTP接口的实践过程，通过示例代码展示如何实现HTTP请求，适用于Java开发者进行网络通信。

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新项目中使用新版的apache HttpClient调用http接口，贴上代码如下

import java.io.InputStream;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.codehaus.jackson.map.ObjectMapper;

    @SuppressWarnings("unchecked")
    private static Map<String, String> doGet(String address) {
        Map<String, String> coordinate = new HashMap<String, String>();
        if (StringUtils.isNotEmpty(address)) {
            try {
                CredentialsProvider credsProvider = new BasicCredentialsProvider();
                credsProvider.setCredentials(new AuthScope("test", 123), new UsernamePasswordCredentials("test", "test"));
 
                CloseableHttpClient httpClient = HttpClients.custom().setDefaultCredentialsProvider(credsProvider)
                        .build();

                Map<String, String> paramsMap = new LinkedHashMap<String, String>();
                paramsMap.put("output", "json");

                String paramsStr = BaiduSnCal.toQueryString(paramsMap);

                String wholeStr = new String("" + paramsStr);
                HttpGet httpGet = new HttpGet(wholeStr);
                httpGet .addHeader("Referer", "");
                // 设置代理
                HttpHost proxy = new HttpHost("", 8080);
                RequestConfig config = RequestConfig.custom().setProxy(proxy).build();
                httpGet.setConfig(config);
                
                CloseableHttpResponse resp = httpClient.execute(httpGet);
                InputStream in = resp.getEntity().getContent();

                StringWriter w = new StringWriter();
                IOUtils.copy(in, w, BaiduSnCal.CHARSET);
                String result = w.toString();
                System.out.println(result);

                Map<String, Object> returnMap = mapper.readValue(result, Map.class);
                System.out.println(((Map<String, Object>) returnMap.get("result")).get("location"));
            } catch (Exception e) {
                LOGGER.error("error : ", e);
            }
        }

        return coordinate;
    }

    public static void main(String[] args) {
        try {
            getCoordinateByAddress("test");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
	
	
	@SuppressWarnings("unchecked")
	private static void doPost(String address) {
		String url = "";
 
		try {
			CloseableHttpClient httpClient = HttpClients.custom().build();
			HttpPost httpPost = new HttpPost(url);
			httpPost.addHeader("Referer", "");
			List<BasicNameValuePair> nvps = new ArrayList<BasicNameValuePair>();
			nvps.add(new BasicNameValuePair("", ""));
			nvps.add(new BasicNameValuePair("output", "json"));
			UrlEncodedFormEntity entity = new UrlEncodedFormEntity(nvps, ENCODING);
			httpPost.setEntity(entity);
			CloseableHttpResponse resp = httpClient.execute(httpPost);
			InputStream in = resp.getEntity().getContent();

			StringWriter w = new StringWriter();
			IOUtils.copy(in, w, ENCODING);
			String result = w.toString();
			System.out.println(result);

			Map<String, Object> returnMap = mapper.readValue(result, Map.class);
			System.out.println(((Map<String, Object>)returnMap.get("result")).get("location"));
			System.out.println(returnMap);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}