HttpClient4.5
常用的HttpClient类4.5配置
所用的jar包有
httpclient-4.5.1.jar
httpcore-4.4.3.jar
httpmime-4.5.1.jar
还有个工具类jar包
commons-io-2.4.jar
下载地址：http://download.csdn.net/detail/u011348453/9392605
HttpHelper
package com.xvli.utils; import com.xvli.comm.HttpConfig; import org.apache.commons.io.FileUtils; import org.apache.commons.io.FilenameUtils; import org.apache.commons.io.IOUtils; import org.apache.http.Consts; import org.apache.http.Header; import org.apache.http.HttpEntity; import org.apache.http.HttpHost; import org.apache.http.HttpStatus; import org.apache.http.NameValuePair; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.config.CookieSpecs; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.entity.UrlEncodedFormEntity; 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.ContentType; import org.apache.http.entity.mime.HttpMultipartMode; import org.apache.http.entity.mime.MultipartEntityBuilder; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.impl.client.LaxRedirectStrategy; import org.apache.http.message.BasicHeader; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map.Entry; /** * HttpClient帮助类 */ public class HttpHelper { private static HttpHelper xmlHttpHelper; private CloseableHttpClient httpClient; private RequestConfig requestConfig; private HttpHelper() { } public static HttpHelper getInstance() { if (xmlHttpHelper == null) { xmlHttpHelper = new HttpHelper(); } return xmlHttpHelper; } /** * GET方法 * * @param url * @param params * @return */ public String doGet(String url, HashMap<String, String> params) { httpClient = getHttpClient(); String content = ""; CloseableHttpResponse response = null; if (params != null && params.size() > 0) { NetParams netParams = new NetParams(); Iterator<Entry<String, String>> iter = params.entrySet().iterator();// 遍历HashMap while (iter.hasNext()) { Entry<String, String> item = iter.next(); String key = item.getKey(); String value = item.getValue(); netParams.addParam(key, value); } if (url.contains("?")) { url = url + netParams.getParamsAsString(); } else { url = url + "?" + netParams.getParamsAsString(); } } HttpGet httpGet = new HttpGet(url); System.out.println("url-->" + url + "\ndata-->" + params.toString()); try { response = httpClient.execute(httpGet); System.out.println(response.getStatusLine().getStatusCode() + ""); if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { HttpEntity entity = response.getEntity(); if (entity != null) { long len = entity.getContentLength(); if (len != -1 && len < 2048) { content = EntityUtils.toString(entity, Consts.UTF_8); } else { content = IOUtils.toString(entity.getContent(), Consts.UTF_8); } } EntityUtils.consume(entity); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { response.close(); httpClient.close(); } catch (IOException e) { e.printStackTrace(); } } return content; } /** * POST方法 * * @param url * @param params * @return */ public String doPost(String url, HashMap<String, String> params) { httpClient = getHttpClient(); String content = ""; CloseableHttpResponse response = null; HttpPost httpPost = new HttpPost(url); if (params != null && params.size() > 0) { List<NameValuePair> formparams = new ArrayList<NameValuePair>(); Iterator<Entry<String, String>> iter = params.entrySet().iterator();// 遍历HashMap while (iter.hasNext()) { Entry<String, String> item = iter.next(); String key = item.getKey(); String value = item.getValue(); formparams.add(new BasicNameValuePair(key, value)); } System.out.println("url-->" + url + "\ndata-->" + params.toString()); UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(formparams, Consts.UTF_8); httpPost.setEntity(urlEncodedFormEntity);// 上传参数在这里 } try { response = httpClient.execute(httpPost); System.out.println(response.getStatusLine().getStatusCode() + ""); if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { HttpEntity entity = response.getEntity(); if (entity != null) { long len = entity.getContentLength(); // if (len != -1 && len < 2048) { content = EntityUtils.toString(entity, Consts.UTF_8); /* } else { content = IOUtils.toString(entity.getContent(), Consts.UTF_8); }*/ } EntityUtils.consume(entity); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { response.close(); httpClient.close(); } catch (IOException e) { e.printStackTrace(); } } return content.toString(); } /** * 下载文件并保存GET方式 * * @param url * @param params * @param targetFile */ public void downLoadSaveFileGET(String url, HashMap<String, String> params, File targetFile) { CreateFileIfNotExtends(targetFile); httpClient = getHttpClient(); CloseableHttpResponse response = null; if (params != null && params.size() > 0) { NetParams netParams = new NetParams(); Iterator<Entry<String, String>> iter = params.entrySet().iterator();// 遍历HashMap while (iter.hasNext()) { Entry<String, String> item = iter.next(); String key = item.getKey(); String value = item.getValue(); netParams.addParam(key, value); } if (url.contains("?")) { url = url + netParams.getParamsAsString(); } else { url = url + "?" + netParams.getParamsAsString(); } } HttpGet httpGet = new HttpGet(url); System.out.println("url-->" + url + "\ndata-->" + params.toString()); try { response = httpClient.execute(httpGet); System.out.println(response.getStatusLine().getStatusCode() + ""); if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { HttpEntity entity = response.getEntity(); if (entity != null) { OutputStream outputStream = new FileOutputStream(targetFile); InputStream inputStream = entity.getContent(); IOUtils.copy(inputStream, outputStream); outputStream.close(); } EntityUtils.consume(entity); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { response.close(); httpClient.close(); } catch (IOException e) { e.printStackTrace(); } } } /** * 下载文件并保存POST方式(有些服务器并不支持405) 【You are doing a POST but for some reason IIS * does not allow POST for whatever resource you are accessing (maybe a WCF * .svc extension?). Seems the "StaticFileModule" is the one complaining * based on the error page you get back.】 * * @param url * @param params * @param targetFile */ public void downLoadSaveFilePOST(String url, HashMap<String, String> params, File targetFile) { CreateFileIfNotExtends(targetFile); httpClient = getHttpClient(); CloseableHttpResponse response = null; HttpPost httpPost = new HttpPost(url); if (params != null && params.size() > 0) { List<NameValuePair> formparams = new ArrayList<NameValuePair>(); Iterator<Entry<String, String>> iter = params.entrySet().iterator();// 遍历HashMap while (iter.hasNext()) { Entry<String, String> item = iter.next(); String key = item.getKey(); String value = item.getValue(); formparams.add(new BasicNameValuePair(key, value)); } System.out.println("url-->" + url + "\ndata-->" + params.toString()); UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(formparams, Consts.UTF_8); httpPost.setEntity(urlEncodedFormEntity);// 上传参数在这里 } try { response = httpClient.execute(httpPost); System.out.println(response.getStatusLine().getStatusCode() + ""); if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { HttpEntity entity = response.getEntity(); if (entity != null) { OutputStream outputStream = new FileOutputStream(targetFile); InputStream inputStream = entity.getContent(); IOUtils.copy(inputStream, outputStream); outputStream.close(); } EntityUtils.consume(entity); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { response.close(); httpClient.close(); } catch (IOException e) { e.printStackTrace(); } } } /** * 上传文件和一些参数 * * @param url * @param params * @param files * @return */ public String upLoadFilePOST(String url, HashMap<String, String> params, HashMap<String, Object> files) { httpClient = getHttpClient(); String content = ""; CloseableHttpResponse response = null; HttpPost httpPost = new HttpPost(url); if ((files != null && files.size() > 0) || (params != null && params.size() > 0)) { MultipartEntityBuilder multipartBuilder = MultipartEntityBuilder.create(); multipartBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE); multipartBuilder.setCharset(Consts.UTF_8); Iterator<Entry<String, Object>> fileIter = files.entrySet().iterator();// 遍历HashMap while (fileIter.hasNext()) { Entry<String, Object> item = fileIter.next(); String fileKey = item.getKey(); File valueFile = (File) item.getValue(); String fileName = FilenameUtils.getName(valueFile.getAbsolutePath());//文件名称aaa.jpg String extension = FilenameUtils.getExtension(valueFile.getAbsolutePath());// 文件后缀名jpg if (extension.equals("zip") || extension.equals("rar")) { try { InputStream inputStream = FileUtils.openInputStream(valueFile);//就是读出流 multipartBuilder.addBinaryBody(fileKey, inputStream, ContentType.create("application/x-zip-compressed"), fileName); inputStream.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } else { multipartBuilder.addBinaryBody(fileKey, valueFile, ContentType.DEFAULT_BINARY, fileName); } } if (params != null && params.size() > 0) { Iterator<Entry<String, String>> iter = params.entrySet().iterator();// 遍历HashMap while (iter.hasNext()) { Entry<String, String> item = iter.next(); String key = item.getKey(); String value = item.getValue(); multipartBuilder.addTextBody(key, value, ContentType.create("text/plain", Consts.UTF_8)); } } System.out.println("url-->" + url + "\ndata-params->" + params.toString() + "\ndata-params->" + files.size()); HttpEntity entity = multipartBuilder.build(); httpPost.setEntity(entity); } try { response = httpClient.execute(httpPost); System.out.println(response.getStatusLine().getStatusCode() + ""); if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { HttpEntity entity = response.getEntity(); if (entity != null) { long len = entity.getContentLength(); if (len != -1 && len < 2048) { content = EntityUtils.toString(entity, Consts.UTF_8); } else { content = IOUtils.toString(entity.getContent(), Consts.UTF_8); } } EntityUtils.consume(entity); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { response.close(); httpClient.close(); } catch (IOException e) { e.printStackTrace(); } } return content; } /** * 定义好自己的HttpClient，超时设置都在这里设置 * * @return httpClient */ private CloseableHttpClient getHttpClient() { CloseableHttpClient httpClient = null; if (HttpConfig.SET_PROXY) {// 如果需要代理，就在这里插入代理 HttpHost proxy = new HttpHost("127.0.0.1", 8080, "http"); requestConfig = RequestConfig.custom().setProxy(proxy).setConnectTimeout(HttpConfig.CONNECT_TIMEOUT).setSocketTimeout(60000).setConnectionRequestTimeout(60000) .setCookieSpec(CookieSpecs.STANDARD_STRICT).build(); } else { requestConfig = RequestConfig.custom().setConnectTimeout(HttpConfig.CONNECT_TIMEOUT).setSocketTimeout(60000).setConnectionRequestTimeout(60000) .setCookieSpec(CookieSpecs.STANDARD_STRICT).build(); } if (HttpConfig.SET_DEFAULT_REDIRECT) { if (HttpConfig.SET_DEFAULT_HEADER) { httpClient = HttpClients.custom().setDefaultRequestConfig(requestConfig).setRedirectStrategy(new LaxRedirectStrategy()).setDefaultHeaders(setDefaultHeaders()) .build(); } else { httpClient = HttpClients.custom().setDefaultRequestConfig(requestConfig).setRedirectStrategy(new LaxRedirectStrategy()).build(); } } else { if (HttpConfig.SET_DEFAULT_HEADER) { httpClient = HttpClients.custom().setDefaultRequestConfig(requestConfig).setDefaultHeaders(setDefaultHeaders()).build(); } else { httpClient = HttpClients.custom().setDefaultRequestConfig(requestConfig).build(); } } return httpClient; } /** * 设置默认的Header * * @return */ private List<Header> setDefaultHeaders() { List<Header> headers = new ArrayList<Header>(); Header header1 = new BasicHeader("imei", "Imei12345"); Header header2 = new BasicHeader("pdatype", "1"); headers.add(header1); headers.add(header2); return headers; } /** * 如果文件不存在就创建文件 * * @param file */ private void CreateFileIfNotExtends(File file) { // 如果文件夹不存在则创建 if (!file.exists()) { System.out.println("文件不存在"); try { file.createNewFile(); } catch (IOException e) { e.printStackTrace(); } } else { System.out.println("文件存在"); } } /** * 直接把类放到这里了 * * @author MrFu */ private class NetParams { int paramsNumbers = 0; private StringBuffer result = new StringBuffer(); public NetParams() { } /** * 添加一个参数,参数无须编码 */ public void addParam(String key, String value) { if (paramsNumbers != 0) { result.append("&"); } try { result.append(key + "=" + URLEncoder.encode(value, "utf-8")); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } paramsNumbers++; } public String getParamsAsString() { return result.toString(); } } }
HttpConfig
package com.xvli.comm; public class HttpConfig { /** * 设置代理否 */ public static final boolean SET_PROXY = false;//暂时不需要代理 /** * 是否设置默认Header */ public static final boolean SET_DEFAULT_HEADER = false; /** * 是否重定向 */ public static final boolean SET_DEFAULT_REDIRECT = false; /** * 连接超时时间 */ public static final int CONNECT_TIMEOUT = 60000; /** * 是否打印cookie */ public static final boolean OUTPUT_COOKIE = false; }
