使用URLConnection与HttpClient进行接口对接

一：httpclient

1:

import java.security.cert.CertificateException;  
import java.security.cert.X509Certificate;  
import javax.net.ssl.SSLContext;  
import javax.net.ssl.TrustManager;  
import javax.net.ssl.X509TrustManager;  
import org.apache.http.conn.ClientConnectionManager;  
import org.apache.http.conn.scheme.Scheme;  
import org.apache.http.conn.scheme.SchemeRegistry;  
import org.apache.http.conn.ssl.SSLSocketFactory;  
import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.impl.client.DefaultHttpClient;

public class SSLClient extends DefaultHttpClient{  
    public SSLClient() throws Exception{  
        super();  
        SSLContext ctx = SSLContext.getInstance("TLS");  
        X509TrustManager tm = new X509TrustManager() {  
                @Override  
                public void checkClientTrusted(X509Certificate[] chain,  
                        String authType) throws CertificateException {  
                }  
                @Override  
                public void checkServerTrusted(X509Certificate[] chain,  
                        String authType) throws CertificateException {  
                }  
                @Override  
                public X509Certificate[] getAcceptedIssuers() {  
                    return null;  
                }  
        };  
        ctx.init(null, new TrustManager[]{tm}, null);  
        SSLSocketFactory ssf = new SSLSocketFactory(ctx,SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);  
        ClientConnectionManager ccm = this.getConnectionManager();  
        SchemeRegistry sr = ccm.getSchemeRegistry();  
        sr.register(new Scheme("https", 443, ssf));  
    }  
}

2

import java.util.ArrayList;  
import java.util.Iterator;  
import java.util.List;  
import java.util.Map;  
import java.util.Map.Entry;  
import org.apache.http.HttpEntity;  
import org.apache.http.HttpResponse;  
import org.apache.http.NameValuePair;  
import org.apache.http.client.HttpClient;  
import org.apache.http.client.entity.UrlEncodedFormEntity;  
import org.apache.http.client.methods.HttpPost;  
import org.apache.http.message.BasicNameValuePair;  
import org.apache.http.util.EntityUtils;

public class HttpClientUtil {
    public static String doPost(String url,Map<String,String> map,String charset){  
        HttpClient httpClient = null;  
        HttpPost httpPost = null;  
        String result = null;  
        try{  
            httpClient = new SSLClient();  
            httpPost = new HttpPost(url);  
            //设置参数  
            List<NameValuePair> list = new ArrayList<NameValuePair>();  
            Iterator iterator = map.entrySet().iterator();  
            while(iterator.hasNext()){  
                Entry<String,String> elem = (Entry<String, String>) iterator.next();  
                list.add(new BasicNameValuePair(elem.getKey(),elem.getValue()));  
            }  
            if(list.size() > 0){  
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list,charset);  
                httpPost.setEntity(entity);  
            }  
            HttpResponse response = httpClient.execute(httpPost);  
            if(response != null){  
                HttpEntity resEntity = response.getEntity();  
                if(resEntity != null){  
                    result = EntityUtils.toString(resEntity,charset);  
                }  
            }  
        }catch(Exception ex){  
            ex.printStackTrace();  
        }  
        return result;  
    }  
}

 /**
     * 发送get请求
     * @param url    路径
     * @return
     */
    public static JSONObject httpGet(String url){
        //get请求返回结果
        JSONObject jsonResult = null;
        try {
            DefaultHttpClient client = new DefaultHttpClient();
            //发送get请求
            HttpGet request = new HttpGet(url);
            HttpResponse response = client.execute(request);
 
            /**请求发送成功，并得到响应**/
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                /**读取服务器返回过来的json字符串数据**/
                String strResult = EntityUtils.toString(response.getEntity());
                /**把json字符串转换成json对象**/
                jsonResult = JSON.parseObject(strResult);
                url = URLDecoder.decode(url, "UTF-8");
            } else {
                logger.error("get请求提交失败:" + url);
            }
        } catch (IOException e) {
            logger.error("get请求提交失败:" + url, e);
        }
        return jsonResult;
    }

3.测试

@RequestMapping(value="/test.htm")  
    public void test(HttpServletRequest request, HttpServletResponse response) {
        
            String atokenUrl="http://uc5.blogcore.cn/sign/sponsor";
            String httpOrgCreateTest = atokenUrl + "httpOrg/create";//加后面的返回的是网页，不加返回的是json字符串
            Map<String,String> createMap = new HashMap<String,String>();  
            createMap.put("token","aaaaaa");  //post提交 
            String resultjson= HttpClientUtil.doPost(httpOrgCreateTest, createMap, "UTF-8");//返回的用户信息json字符串
            System.out.println(resultjson);  
    }

public class HttpClient {

    private static Logger logger = LoggerFactory.getLogger(HttpClient.class);//日志记录
    /**
     * post请求
     * @param url         url地址
     * @param jsonParam     参数
     * @param noNeedResponse    不需要返回结果
     * @return
     */
    public static JSONObject httpPost(String url,JSONObject jsonParam, boolean noNeedResponse){
        //post请求返回结果
        DefaultHttpClient httpClient = new DefaultHttpClient();
        JSONObject jsonResult = null;
        HttpPost method = new HttpPost(url);
        try {
            if (null != jsonParam) {
                //解决中文乱码问题
                StringEntity entity = new StringEntity(jsonParam.toString(), "utf-8");
                entity.setContentEncoding("UTF-8");
                entity.setContentType("application/json");
                method.setEntity(entity);
            }
            HttpResponse result = httpClient.execute(method);
            url = URLDecoder.decode(url, "UTF-8");
            /**请求发送成功，并得到响应**/
            if (result.getStatusLine().getStatusCode() == 200) {
                String str = "";
                try {
                    /**读取服务器返回过来的json字符串数据**/
                    str = EntityUtils.toString(result.getEntity());
                    if (noNeedResponse) {
                        return null;
                    }
                    /**把json字符串转换成json对象**/
                    jsonResult = JSON.parseObject(str);
                } catch (Exception e) {
                    logger.error("post请求提交失败:" + url, e);
                }
            }
        } catch (IOException e) {
            logger.error("post请求提交失败:" + url, e);
        }
        return jsonResult;
    }
    
    /**
     * 发送get请求
     * @param url    路径
     * @return
     */
    public static JSONObject httpGet(String url){
        //get请求返回结果
        JSONObject jsonResult = null;
        try {
            DefaultHttpClient client = new DefaultHttpClient();
            //发送get请求
            HttpGet request = new HttpGet(url);
            HttpResponse response = client.execute(request);
 
            /**请求发送成功，并得到响应**/
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                /**读取服务器返回过来的json字符串数据**/
                String strResult = EntityUtils.toString(response.getEntity());
                /**把json字符串转换成json对象**/
                jsonResult = JSON.parseObject(strResult);
                url = URLDecoder.decode(url, "UTF-8");
            } else {
                logger.error("get请求提交失败:" + url);
            }
        } catch (IOException e) {
            logger.error("get请求提交失败:" + url, e);
        }
        return jsonResult;
    }

}

二:urlconnection

public class HttpGetUtil {

     // 发起http get类型请求获取返回结果
    public static String httpGet(String urlstr) throws IOException {
        URL url = new URL(urlstr);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();

        conn.connect();
        InputStream is = conn.getInputStream();

        byte[] buff = new byte[is.available()];
        is.read(buff);
        String ret = new String(buff, "utf-8");

        is.close();
        conn.disconnect();

        return ret;
    }
}