java HttpClient 工具类

package cn.creditease.xuanyuan.server.utils;

import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
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.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HttpClientUtil {
private static Logger log = LoggerFactory.getLogger(HttpClientUtil.class);

public static  MultiThreadedHttpConnectionManager connectionManager;static{    connectionManager =  new   MultiThreadedHttpConnectionManager();}public static String postJSON(String url, String jsonStr) {    CloseableHttpClient client = HttpClients.createDefault();    HttpPost request = new HttpPost(url);    HttpEntity entity = new StringEntity(jsonStr, "UTF-8");    request.setHeader("content-type", "application/json");    request.setEntity(entity);    CloseableHttpResponse response = null;    try {        response = client.execute(request);        return EntityUtils.toString(response.getEntity(), "UTF-8");    } catch (Exception e) {        log.error("发送json格式的post请求失败", e);    } finally {        try {            client.close();        } catch (IOException e) {            log.error("关闭http client失败", e);        }    }    return null;}/** * POST单个内容 * @param url * @param strContent * @return * @throws HttpException * @throws IOException */public static String execPOSTMethodParamesForPhp(String url, String strContent)        throws HttpException, IOException {    StringBuilder reponseStr = new StringBuilder();    // 构造HttpClient的实例    HttpClient httpClient = new HttpClient();    httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(6000);     httpClient.getHttpConnectionManager().getParams().setSoTimeout(10000);    PostMethod postMethod = new PostMethod(url);    postMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,            new DefaultHttpMethodRetryHandler());    postMethod.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,"utf-8");      if(null!=strContent&&!"".equals(strContent.trim())){        NameValuePair[] data = new NameValuePair[1];        data[0] = new NameValuePair("data",                strContent);        postMethod.setRequestBody(data);    }       // 执行postMethod    int statusCode = httpClient.executeMethod(postMethod);    if (statusCode != HttpStatus.SC_OK) {        log.info("request url" + url + "   Method failed: "                + postMethod.getStatusLine());    }    // 读取内容    byte[] responseBody = postMethod.getResponseBody();    reponseStr.append(new String(responseBody,"UTF-8"));    postMethod.releaseConnection();    return reponseStr.toString();}public static String sendGet(String url) {    CloseableHttpClient client = HttpClients.createDefault();    HttpGet request = new HttpGet(url);    CloseableHttpResponse response = null;    try {        response = client.execute(request);        return EntityUtils.toString(response.getEntity(), "UTF-8");    } catch (Exception e) {        log.error("发送get请求失败", e);    } finally {        try {            if (response != null) {                response.close();            }            client.close();        } catch (IOException e) {            log.error("关闭http client失败", e);        }    }    return null;}/** * POST多个参数  * @param url * @param parames * @return * @throws IOException  * @throws HttpException  */public static String execPOSTMethodMParames(String url,        Map<String, String> parames) throws HttpException, IOException {    StringBuilder reponseStr = new StringBuilder();    // 构造HttpClient的实例    HttpClient httpClient = new HttpClient(connectionManager);    httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(6000);     httpClient.getHttpConnectionManager().getParams().setSoTimeout(10000);    PostMethod postMethod = new PostMethod(url);    postMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,            new DefaultHttpMethodRetryHandler());    postMethod.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,"utf-8");      // 填入各个表单域的值    /*     * NameValuePair[] data = { new NameValuePair("id", "youUserName"), new     * NameValuePair("passwd", "yourPwd") };     */    // 将表单的值放入postMethod中    // 设置参数    if (parames.size() > 0) {        NameValuePair[] data = new NameValuePair[parames.size()];        int parameLenth = 0;        for (Map.Entry<String, String> entry : parames.entrySet()) {            data[parameLenth] = new NameValuePair(entry.getKey(),                    entry.getValue());            parameLenth +=1;        }        postMethod.setRequestBody(data);    }    // 执行postMethod    int statusCode = httpClient.executeMethod(postMethod);    if (statusCode != HttpStatus.SC_OK) {        log.info("request url" + url + "   Method failed: "                + postMethod.getStatusLine());    }    // 读取内容    byte[] responseBody = postMethod.getResponseBody();    reponseStr.append(new String(responseBody,"UTF-8"));    postMethod.releaseConnection();    // HttpClient对于要求接受后继服务的请求，象POST和PUT等不能自动处理转发    // 301或者302    /*     * if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY || statusCode ==     * HttpStatus.SC_MOVED_TEMPORARILY) { // 从头中取出转向的地址 Header     * locationHeader = postMethod.getResponseHeader("location"); String     * location = null; if (locationHeader != null) { location =     * locationHeader.getValue();     * System.out.println("The page was redirected to:" + location); } else     * { System.err.println("Location field value is null."); } return; }     */    return reponseStr.toString();}/** * POST--Entity  * @param url * @param parames * @return * @throws Exception  */public static String execPOSTMethodEntity(String url,        String content) throws Exception {

// StringBuilder reponseStr = new StringBuilder();
// 构造HttpClient的实例

    CloseableHttpClient client = HttpClients.createDefault();    HttpPost request = new HttpPost(url);    HttpEntity entity = new StringEntity(content, "UTF-8");    request.setHeader("content-type", "application/json");    request.setEntity(entity);    CloseableHttpResponse response = null;    try {        response = client.execute(request);        return EntityUtils.toString(response.getEntity(), "UTF-8");    } catch (Exception e) {        log.error("发送json格式的post请求失败", e);        throw new Exception(e);    } finally {        try {            client.close();        } catch (IOException e) {            log.error("关闭http client失败", e);        }    }    //return reponseStr.toString();}/** * 返回以对象属性名-属性值为内容的HashMap * @param target * @return */public static Map<String, Object> toParameterHashMap(Object target) throws Exception{    Class<? extends Object> clazz = target.getClass();    Field[] fields = clazz.getDeclaredFields();    if (fields != null) {        Map<String, Object> map = new HashMap<String, Object>();        Method method = null;        String methodName = null;        String fieldName = null;        for (Field field : fields) {            fieldName = field.getName();            methodName = "get" + Character.toUpperCase(fieldName.charAt(0))                    + fieldName.substring(1);            method = clazz.getMethod(methodName);            Object filedValue = method.invoke(target);            if (filedValue != null) {                map.put(fieldName, filedValue.toString());            }        }        return map;    }    throw new IllegalArgumentException("目标对象没有可用的属性");}public static String execPOSTMethodParamesHera(String url, String str,String contentType)        throws HttpException, IOException {    StringBuilder reponseStr = new StringBuilder();    // 构造HttpClient的实例    HttpClient httpClient = new HttpClient(connectionManager);    httpClient.getParams().setParameter("http.protocol.content-charset", "UTF-8");    httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(6000);     httpClient.getHttpConnectionManager().getParams().setSoTimeout(10000);    PostMethod postMethod = new PostMethod(url);    postMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,            new DefaultHttpMethodRetryHandler());    Header header = new Header("content-type",contentType);    postMethod.addRequestHeader(header);    postMethod.setRequestBody(str);    // 执行postMethod    int statusCode = httpClient.executeMethod(postMethod);    if (statusCode != HttpStatus.SC_OK) {        log.info("Method failed: " + postMethod.getStatusLine());        log.info(new String(postMethod.getResponseBody()));        return null;    }    log.info("http status: " + statusCode);    // 读取内容    byte[] responseBody = postMethod.getResponseBody();    reponseStr.append(new String(responseBody));    postMethod.releaseConnection();    return reponseStr.toString();}public static void main(String[] args) throws HttpException, IOException {}   /** * POST测试，如果，url地址响应200返回true，否则返回false *  * @param url * @param parames * @return * @throws IOException * @throws HttpException */public static boolean execPostTest(String url, Integer connectionTimeout, Integer soTimeout){    if (StringUtils.isBlank(url)) {        return false;    }    if (connectionTimeout == null || connectionTimeout <= 0) {        connectionTimeout = 1000;    }    if (soTimeout == null || soTimeout <= 0) {        soTimeout = 1000;    }    // 构造HttpClient的实例    HttpClient httpClient = new HttpClient(connectionManager);    httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(connectionTimeout);    httpClient.getHttpConnectionManager().getParams().setSoTimeout(soTimeout);    PostMethod postMethod = new PostMethod(url);    postMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());    postMethod.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "UTF-8");    // 执行postMethod    int statusCode = -1;    try {        statusCode = httpClient.executeMethod(postMethod);    } catch (IOException e) {        log.error("****execPostTest****出现异常****url==>"+url);        e.printStackTrace();        return false;    }    if (statusCode == HttpStatus.SC_OK) {        return true;    } else {        return false;    }}/** * POST测试，如果，url地址响应200返回true，否则返回false *  * @param url * @param parames * @return * @throws IOException * @throws HttpException */public static boolean execPostTest(String url){    return execPostTest(url, null, null);}

}