Apache HttpClient发送HttpGet请求

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利用Apache Http Client模拟发送Http请求，并获取返回结果，注意版本区分。

/** *  */package com.xxx.httputil;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.net.URI;import java.net.URISyntaxException;import java.nio.charset.Charset;import java.util.List;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.NameValuePair;import org.apache.http.ParseException;import org.apache.http.client.HttpClient;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.DefaultHttpClient;import org.apache.http.params.CoreConnectionPNames;import org.apache.http.util.EntityUtils;import com.xxx.pojo.MyHttpResponse;/** * 项目名称：xxx *  * @description: *  * @author Wind-spg *  * @create_time：2014年12月2日 下午2:29:41 *  * @version V1.0.0 *  */public class MyHttpUtil{    private static final Log LOGGER = LogFactory.getLog(MyHttpUtil.class);    /**     * @description: httpget请求     * @author: Wind-spg     * @param url     * @param params     * @param connectionTimeout     *            {@link org.apache.http.params.CoreConnectionPNames#CONNECTION_TIMEOUT}     * @param soTimeout     *            {@link org.apache.http.params.CoreConnectionPNames#SO_TIMEOUT}     * @return     * @throws URISyntaxException     * @throws IOException     */    public static MyHttpResponse doHttpGet(String url, List<NameValuePair> params, int connectionTimeout,            int soTimeout) throws URISyntaxException, IOException    {        LOGGER.debug(String.format("enter function, %s, %s", url, params));        LOGGER.info(String.format("do http get start:%s", System.currentTimeMillis()));        // for version 4.3+        // HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();        // CloseableHttpClient httpClient = httpClientBuilder.build();        HttpClient httpClient = new DefaultHttpClient();        // 连接时间        httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, connectionTimeout);        // 数据传输时间        httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, soTimeout);        // Get请求        HttpGet httpget = new HttpGet(url);        try        {            // for version 4.3+ 设置请求和传输超时时间            // RequestConfig requestConfig =            // RequestConfig.custom().setSocketTimeout(2000)            // .setConnectTimeout(2000).build();            // httpget.setConfig(requestConfig);            // 设置参数            String str = EntityUtils.toString(new UrlEncodedFormEntity(params, Charset.forName("UTF-8")));            httpget.setURI(new URI(httpget.getURI().toString() + "?" + str));            // 发送请求            HttpResponse httpResponse = httpClient.execute(httpget);            int statusCode = httpResponse.getStatusLine().getStatusCode();            if (statusCode != HttpStatus.SC_OK)            {                LOGGER.error("Method failed:" + httpResponse.getStatusLine());            }            // 获取返回数据            HttpEntity entity = httpResponse.getEntity();            String body = EntityUtils.toString(entity, Charset.forName("UTF-8"));            if (entity != null)            {                EntityUtils.consume(entity);            }            LOGGER.info(String.format("do http get end:%s", System.currentTimeMillis()));            LOGGER.debug(String.format("http get response:%s", body));            return new MyHttpResponse(statusCode, body, httpget.getURI().toString());        } catch (ParseException e)        {            LOGGER.error("do http get error!", e);            throw e;        } catch (UnsupportedEncodingException e)        {            LOGGER.error("do http get error!", e);            throw e;        } catch (IOException e)        {            LOGGER.error("do http get error!", e);            throw e;        } catch (URISyntaxException e)        {            LOGGER.error("do http get error!", e);            throw e;        } finally        {            // try            // {            // // for 4.3+            // httpClient.close();            // } catch (IOException e)            // {            // LOGGER.error("close httpclient error!", e);            // }            httpget.releaseConnection();            httpClient.getConnectionManager().shutdown();        }    }    /**     * @description: 发送httpPost请求     * @author: Wind-spg     * @param url     * @param params     * @param connectionTimeout     *            {@link org.apache.http.params.CoreConnectionPNames#CONNECTION_TIMEOUT}     * @param soTimeout     *            {@link org.apache.http.params.CoreConnectionPNames#SO_TIMEOUT}     * @return     * @throws IOException     */    public static MyHttpResponse doHttpPost(String url, List<NameValuePair> params, int connectionTimeout,            int soTimeout) throws IOException    {        LOGGER.debug(String.format("enter function, %s, %s", url, params));        // // 创建HttpClientBuilder        // HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();        // // HttpClient        // CloseableHttpClient client = httpClientBuilder.build();        LOGGER.info(String.format("do http post start:%s", System.currentTimeMillis()));        // 直接创建client        // for version4.3+        // CloseableHttpClient client = HttpClients.createDefault();        HttpClient httpClient = new DefaultHttpClient();        // 连接时间        httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, connectionTimeout);        // 数据传输时间        httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, soTimeout);        HttpPost httpPost = new HttpPost(url);        UrlEncodedFormEntity postEntity = new UrlEncodedFormEntity(params, Charset.forName("UTF-8"));        httpPost.setEntity(postEntity);        LOGGER.debug(String.format("request line:%s", httpPost.getRequestLine()));        try        {            // 执行post请求            HttpResponse httpResponse = httpClient.execute(httpPost);            int statusCode = httpResponse.getStatusLine().getStatusCode();            if (statusCode != HttpStatus.SC_OK)            {                LOGGER.error("Method failed:" + httpResponse.getStatusLine());            }            HttpEntity entity = httpResponse.getEntity();            String result = EntityUtils.toString(entity, Charset.forName("UTF-8"));            if (entity != null)            {                EntityUtils.consume(entity);            }            LOGGER.debug(String.format("http post response:%s", result));            LOGGER.info(String.format("do http post end:%s", System.currentTimeMillis()));            return new MyHttpResponse(statusCode, result, httpPost.getURI().toString());        } catch (IOException e)        {            LOGGER.error("do http post error!", e);            throw e;        } finally        {            // try            // {            // // 关闭流并释放资源,for version4.3+            // client.close();            // } catch (IOException e)            // {            // LOGGER.error("close httpclient error!", e);            // }            httpPost.releaseConnection();            httpClient.getConnectionManager().shutdown();        }    }}

MyHttpResponse

/** *  */package com.xxx.pojo;import java.io.Serializable;/** * 项目名称：xxx *  * @description: *  * @author Wind-spg *  * @create_time：2014年12月12日 上午9:41:58 *  * @version V1.0.0 *  */public class MyHttpResponse implements Serializable{    /**     * {变量说明}     */    private static final long serialVersionUID = 6381662550803520971L;    // private static final Log LOGGER = LogFactory.getLog(MyHttpResponse.class);    private int responseStatus;    private String responseBody;    private String requetUrl;    public MyHttpResponse()    {    }    public MyHttpResponse(int resonseStatus, String responseBody)    {        this.responseStatus = resonseStatus;        this.responseBody = responseBody;    }    public MyHttpResponse(int resonseStatus, String responseBody, String requestUrl)    {        this.responseStatus = resonseStatus;        this.responseBody = responseBody;        this.requetUrl = requestUrl;    }    public int getResponseStatus()    {        return responseStatus;    }    public void setResponseStatus(int responseStatus)    {        this.responseStatus = responseStatus;    }    public String getResponseBody()    {        return responseBody;    }    public void setResponseBody(String responseBody)    {        this.responseBody = responseBody;    }    public String getRequetUrl()    {        return requetUrl;    }    public void setRequetUrl(String requetUrl)    {        this.requetUrl = requetUrl;    }    @Override    public String toString()    {        return "MyHttpResponse [responseStatus=" + responseStatus + ", responseBody=" + responseBody + ", requetUrl="                + requetUrl + "]";    }}

附：如何正确关闭你的http请求链接，并释放资源

http://seanhe.iteye.com/blog/234759

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