Java代码调用HTTP请求工具类

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1.Java代码调用HTTP请求工具类
import org.apache.commons.lang.StringUtils;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.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.params.CoreConnectionPNames;import org.apache.http.util.EntityUtils;import org.apache.log4j.Logger;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.UnsupportedEncodingException;import java.net.URI;import java.util.ArrayList;import java.util.List;import java.util.Map;import java.util.Map.Entry;public class HttpClientUtil {  private static Logger logger = Logger.getLogger(HttpClientUtil.class);  /**    * @description 发送httpClient post 请求，json 格式返回    * @author qinhc    * @2015下午6:03:09    * @param url    * @param body    * @return    * @throws Exception    */  public static String executeHttpPost(String url, String body)        throws Exception {      DefaultHttpClient httpClient = new DefaultHttpClient();      HttpPost method = new HttpPost(url);      StringEntity entity = new StringEntity(body, "utf-8");// 解决中文乱码问题      entity.setContentEncoding("UTF-8");      entity.setContentType("application/json");      method.setEntity(entity);      String resData = "";      // 请求超时      httpClient.getParams().setParameter(            CoreConnectionPNames.CONNECTION_TIMEOUT, 20000);      // 读取超时      httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT,            20000);      try {        HttpResponse result = httpClient.execute(method);        // 请求结束，返回结果        resData = EntityUtils.toString(result.getEntity());        logger.info("订单消息返回的数据：" + resData);      } catch (Exception e) {        logger.error("订单消息发送请求出错：" + e.getMessage());      } finally {        method.releaseConnection();      }      return resData;  }  /**    * @description    * @author qinhc    * @2015下午6:00:41    * @param url    * @param body    * @param type 请求的类型    * @return    * @throws Exception    */  public static String executeHttpPostType(String url, String body,String type)        throws Exception {      DefaultHttpClient httpClient = new DefaultHttpClient();      HttpPost method = new HttpPost(url);      StringEntity entity = new StringEntity(body, "utf-8");// 解决中文乱码问题      entity.setContentEncoding("UTF-8");      entity.setContentType(type);      method.setEntity(entity);      String resData = "";      // 请求超时      httpClient.getParams().setParameter(            CoreConnectionPNames.CONNECTION_TIMEOUT, 20000);      // 读取超时      httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT,            20000);      try {        HttpResponse result = httpClient.execute(method);        // 请求结束，返回结果        resData = EntityUtils.toString(result.getEntity());        logger.info("订单消息返回的数据：" + resData);      } catch (Exception e) {        logger.error("订单消息发送请求出错：" + e.getMessage());      } finally {        method.releaseConnection();      }      return resData;  }  /**    *  * @Description: post 提交  * @author yuzj7@lenovo.com  * @date 2015年5月15日 上午10:41:49  * @param url  * @param params  * @return    */  public static String postStr(String url, Map<String, String> params) throws UnsupportedEncodingException{      HttpClient httpclient =new DefaultHttpClient();      HttpPost httpPost = new HttpPost(url);      httpPost.setHeader("Content-Type", "application/xml; charset=utf-8");      List<NameValuePair> nvps = new ArrayList<NameValuePair>();      if (params != null && !params.isEmpty()) {        for (Entry<String, String> entry : params.entrySet()) {            nvps.add(new BasicNameValuePair(entry.getKey(), entry                  .getValue()));        }      }      httpPost.setEntity(new UrlEncodedFormEntity(nvps, "utf-8"));      String line = null;      String str="";      try {        HttpResponse response=httpclient.execute(httpPost);        HttpEntity entity = response.getEntity();        InputStreamReader inputstream = new InputStreamReader(entity.getContent(), "UTF-8");        BufferedReader reader = new BufferedReader(inputstream);        // 显示结果        while ((line = reader.readLine()) != null) {            str+=line;        }        reader.close();        inputstream.close();      }catch(Exception e){          e.printStackTrace();      }finally{          if(httpclient != null){            httpclient.getConnectionManager().shutdown();          }      }      return str;  }  /**    * post 方法    * @param url    * @return    * @author mamj    * @throws UnsupportedEncodingException    * @date 2013-11-19 下午03:46:58    */  public static String PostStr(String url, Map<String, String> params,String referer,String cookie,boolean isproxy,String charset) throws UnsupportedEncodingException{      HttpClient httpclient =new DefaultHttpClient();      // 请求超时      httpclient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 60000);        // 读取超时      httpclient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 60000    );      HttpPost httpPost = new HttpPost(url);      List<NameValuePair> nvps = new ArrayList<NameValuePair>();      if (params != null && !params.isEmpty()) {        for (Entry<String, String> entry : params.entrySet()) {            nvps.add(new BasicNameValuePair(entry.getKey(), entry                  .getValue()));        }      }      if(!StringUtils.isEmpty(cookie)){        httpPost.setHeader("Cookie", cookie);      }      if(!StringUtils.isEmpty(referer)){        httpPost.addHeader("Referer", referer);      }        if(StringUtils.isEmpty(charset)){            charset = "utf-8";        }      httpPost.setEntity(new UrlEncodedFormEntity(nvps, charset));      String line = null;      StringBuffer str = new StringBuffer("");      InputStreamReader inreader = null;      BufferedReader reader = null;      try {        HttpResponse response=httpclient.execute(httpPost);        HttpEntity entity = response.getEntity();        inreader = new InputStreamReader(entity.getContent(), charset);        reader  = new BufferedReader(inreader);        // 显示结果        while ((line = reader.readLine()) != null) {            str.append(line);        }      }catch(Exception e){          e.printStackTrace();      }finally{          if (reader != null) {                try {                  reader.close();// 最后要关闭BufferedReader            } catch (IOException e) {              e.printStackTrace();            }            }            if(inreader != null){              try {                  inreader.close();            } catch (IOException e) {              // TODO Auto-generated catch block              e.printStackTrace();            }            }          if(httpclient != null){            httpclient.getConnectionManager().shutdown();          }      }      return str.toString();  }  public static String getStr(String url) {        BufferedReader in = null;        // 定义HttpClient        HttpClient client = new DefaultHttpClient();        // 实例化HTTP方法        HttpGet request = new HttpGet();        String line = "";        String tmp="";        try {            request.setURI(new URI(url));            HttpResponse response = client.execute(request);            in = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8"));            while ((tmp=in.readLine()) != null) {              line+=tmp;            }        }catch (Exception e) {            e.printStackTrace();        }finally{            if (in != null) {                try {              in.close();// 最后要关闭BufferedReader            } catch (IOException e) {              e.printStackTrace();            }            }            client.getConnectionManager().shutdown();        }        return line;  }}
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