HttpUrlConnection与HttpClient的认识（四） -HttpClient的封装

import org.apache.commons.httpclient.*;import org.apache.commons.httpclient.methods.*;import org.apache.commons.httpclient.params.HttpMethodParams;import java.io.*;import java.util.List;import java.util.Map;import java.util.Set;import java.util.zip.GZIPInputStream;public class HttpClientUtil {    /**     * 使用post方式调用     * @param url 调用的URL     * @param values 传递的参数值List     * @param charSet设置内容的编码格式     * @return 调用得到的字符串     */    public static String httpClientPost(String url,List<NameValuePair[]> values,String charSet){        StringBuilder sb =new StringBuilder();        HttpClient httpClient = new HttpClient();        PostMethod postMethod = new PostMethod(url);        //创建参数队列        for (NameValuePair[] value : values) {            postMethod.addParameters(value);        }        try {            httpClient.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, charSet);            httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(3000);            httpClient.getHttpConnectionManager().getParams().setSoTimeout(3000);            int statusCode = httpClient.executeMethod(postMethod);            if(statusCode != 200){                return "";            }            //以流的行式读入，避免中文乱码            InputStream is = postMethod.getResponseBodyAsStream();            BufferedReader dis=new BufferedReader(new InputStreamReader(is,"utf-8"));                String str ="";                                        while((str =dis.readLine())!=null){                 sb.append(str);                 sb.append("\r\n"); // 换行             }        } catch (Exception e) {            e.printStackTrace();        }finally{            postMethod.releaseConnection();        }        return sb.toString();    }    /**     * 使用get方式调用     * @param url调用的URL     * @return 调用得到的字符串     */    public static String httpClientGet(String url,String charSet){        StringBuilder sb =new StringBuilder();        HttpClient httpClient = new HttpClient();        GetMethod getMethod = new GetMethod(url);        getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,new DefaultHttpMethodRetryHandler());        try {            // 执行getMethod            httpClient.executeMethod(getMethod);            //以流的行式读入，避免中文乱码            InputStream is = getMethod.getResponseBodyAsStream();            BufferedReader dis=new BufferedReader(new InputStreamReader(is,charSet));                String str ="";                                        while((str =dis.readLine())!=null){                 sb.append(str);             }        } catch (Exception e) {             e.printStackTrace();        } finally {            // 关闭连接            getMethod.releaseConnection();        }        return sb.toString();     }    /**     * 将MAP转换成HTTP请求参数     * @param pairArr     * @return     */    public static NameValuePair[] praseParameterMap(Map<String, String> map){        NameValuePair[] nvps = new NameValuePair[map.size()];        Set<String> keys = map.keySet();        int i=0;        for(String key:keys){            nvps[i] = new NameValuePair();            nvps[i].setName(key);            nvps[i].setValue(map.get(key));            i++;        }        return nvps;    }    /**     * 使用post方式调用     * @param url 调用的URL     * @param values 传递的参数值     * @param xml 传递的xml参数     * @return     */    public static String httpClientPost(String url, NameValuePair[] values, String xml){        StringBuilder sb = new StringBuilder();        HttpClient client = new HttpClient();        client.getParams().setParameter(                HttpMethodParams.HTTP_CONTENT_CHARSET, "UTF-8");        PostMethod method = new PostMethod(url);        method.setQueryString(values);        method.addRequestHeader("Content-Type", "text/xml;charset=UTF-8");        RequestEntity reis = null;        InputStream input = null;        InputStream is = null;        BufferedReader dis = null;        try {            input = new ByteArrayInputStream(xml.getBytes("utf-8"));            reis = new InputStreamRequestEntity(input);            method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,                    new DefaultHttpMethodRetryHandler());            method.setRequestEntity(reis);            client.executeMethod(method);            // 以流的行式读入，避免中文乱码            is = method.getResponseBodyAsStream();            dis = new BufferedReader(new InputStreamReader(is, "utf-8"));            String str = "";            while ((str = dis.readLine()) != null) {                sb.append(str);            }        } catch (HttpException ex) {            ex.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            method.releaseConnection();            try {                if (dis != null)                    dis.close();                if (is != null)                    is.close();                if (input != null)                    input.close();            } catch (IOException e) {                e.printStackTrace();            }        }        return sb.toString();    }    public static String httpGzipGet(String url,String charset){        HttpClient httpclient = new HttpClient();        GetMethod method = new GetMethod(url);        method.addRequestHeader("User-Agent","Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.79 Safari/537.1");        method.addRequestHeader("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");        method.addRequestHeader("Accept-Encoding", "gzip,deflate,sdch");//gzip解压缩必须属性        InputStream in = null;        GZIPInputStream gzin = null;        InputStreamReader isr = null;        BufferedReader br = null;        try {            httpclient.executeMethod(method);            if(method.getStatusCode() == HttpStatus.SC_OK){                Header respHead = method.getResponseHeader("Content-Encoding");                if(respHead != null){                    String contEncoding = respHead.getValue();                    if(contEncoding != null && contEncoding.toLowerCase().indexOf("gzip") > -1){                        in = method.getResponseBodyAsStream();                        gzin = new GZIPInputStream(in);                        isr = new InputStreamReader(gzin,charset);                        br = new BufferedReader(isr);                        String temp = "";                        StringBuffer result = new StringBuffer();                        if((temp = br.readLine()) != null){                            result.append(temp);                        }                        return result.toString();                    }else{                        return httpClientGet(url,charset);                    }                }else{                    return null;                }            }else{                return null;            }        } catch (Exception e) {            e.printStackTrace();            return null;        } finally{            try{                if(br != null){                    br.close();                    br = null;                }                if(isr != null){                    isr.close();                    isr = null;                }                if(gzin != null){                    gzin.close();                    gzin = null;                }                if(in != null){                    in.close();                    in = null;                }                if(method != null){                    method.releaseConnection();                    method = null;                }            }catch(IOException e){                e.printStackTrace();            }        }    }    public static String httpClientPostJson(String url, String jsonStr){        if (jsonStr == null)            return null;        StringBuilder sb = new StringBuilder();        HttpClient httpClient = new HttpClient();        httpClient.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "UTF-8");        httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(300);        httpClient.getHttpConnectionManager().getParams().setSoTimeout(700);        PostMethod postMethod = new PostMethod(url);        try {            StringRequestEntity entity = new StringRequestEntity(jsonStr, "application/json", "utf-8");            postMethod.setRequestEntity(entity);            int statusCode = httpClient.executeMethod(postMethod);            if (statusCode != 200) {                return "";            }            //以流的行式读入，避免中文乱码            InputStream is = postMethod.getResponseBodyAsStream();            BufferedReader dis = new BufferedReader(new InputStreamReader(is, "utf-8"));            String str;            while ((str = dis.readLine()) != null) {                sb.append(str);            }        } catch (Exception e) {            e.printStackTrace();        } finally {            postMethod.releaseConnection();        }        return sb.toString();    }}