近期给整个系统做了升级后发现框架中httpclient占用系统资源后比重特别大，在各种baidu，google后发现是4.3以下版本的公共问题，因此一狠心升级到了最新的4.5.2。发现之前好多方法都报黄了和出现斜杠了。。。 有洁癖见不得这样的东西出现在框架中因此从新封装了一套。封装的不好，各位大神轻喷。。。直接贴。。。
/**
* http工具类
* @author dubl
* @version 1.0.0 , 2016年12月8日 下午2:28:48
*/
public class HttpClientUtil {
/** 日志 */
private static Logger logger = LogManager.getLogger(HttpClientUtil.class.getName());
/** 请求超时设置*/
private static RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(15000).setConnectionRequestTimeout(7500).setSocketTimeout(15000).build();
/** 编码设置*/
private static final String encoding = "UTF-8";
/** 请求方式枚举*/
public static enum httpRequestMethod {
GET, POST;
};
/**
* 创建HTTPS连接
*
* @return 自动关闭的https连接
* @throws Exception
* @author dubl
*/
public static CloseableHttpClient getHttpsClient() throws Exception {
CloseableHttpClient httpClient = null;
// 重写ssl证书校验 do something or do nothing
TrustManager trustManager = new X509TrustManager() {
@Override
public X509Certificate[] getAcceptedIssuers() {
return null;
}
@Override
public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
}
@Override
public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
}
};
try {
// 开启SSL
SSLContext sslContext = SSLContext.getInstance("TLS");
// 初始化ssl校验
sslContext.init(null, new TrustManager[] { trustManager }, null);
// 注册ssl链接工厂
SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(sslContext,
NoopHostnameVerifier.INSTANCE);
// 请求配置
RequestConfig requestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD_STRICT)
.setExpectContinueEnabled(true)
.setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM, AuthSchemes.DIGEST))
.setProxyPreferredAuthSchemes(Arrays.asList(AuthSchemes.BASIC)).build();
// 链接配置
Registry socketFactoryRegistry = RegistryBuilder. create()
.register("http", PlainConnectionSocketFactory.INSTANCE).register("https", socketFactory).build();
// 创建ConnectionManager，添加Connection配置信息
PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(
socketFactoryRegistry);
// 创建连接
httpClient = HttpClients.custom().setConnectionManager(connectionManager)
.setDefaultRequestConfig(requestConfig).build();
} catch (Exception e) {
e.printStackTrace();
logger.error("创建https连接出错。" + e.getMessage());
}
return httpClient;
}
/**
* 发送http请求
*
* @param url 请求地址
* @param method 请求方式
* @param params 参数 K-V模式
* @return 返回结果字符串
* @throws Exception
* @author dubl
*/
public static String sendHttpRequest(String url, httpRequestMethod method, Map params) throws Exception {
CloseableHttpResponse response = null;
String result = null;
logger.info(method.name() + ":" + url + "--" + params);
if (httpRequestMethod.GET == method) {
response = sendGetRequest(url, params);
} else if (httpRequestMethod.POST == method) {
response = sendPostRequest(url, params);
}
HttpEntity entity = response.getEntity();
result = EntityUtils.toString(entity, encoding);
int statusCode = response.getStatusLine().getStatusCode();
response.close();
if (statusCode == HttpStatus.SC_OK) {
EntityUtils.consume(entity);
logger.info("HTTP-RESPONSE" + result);
} else {
throw new Exception("发送HTTP请求:" + url + "出现异常,返回内容为:" + result);
}
return result;
}
/**
* http发送文件
*
* @param url
* 请求路径
* @param params
* 参数
* @param files
* 文件集合
* @return
* @throws Exception
* @author dubl
*/
public static String sendHttpRequestFile(String url, Map params, File[] files) throws Exception {
CloseableHttpClient httpClient = null;
CloseableHttpResponse response = null;
String result = null;
try {
Charset charset = CharsetUtils.get(encoding);
// post模式且带上传文件
httpClient = getHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setConfig(requestConfig);
// 创建提交
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
// 开启浏览器兼容模式
multipartEntityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
// 设置编码集
multipartEntityBuilder.setCharset(charset);
// 非文件参数
for (Map.Entry entry : params.entrySet()) {
StringBody value = new StringBody(entry.getValue(), ContentType.create("text/plain", charset));
multipartEntityBuilder.addPart(entry.getKey(), value);
}
// 文件参数
for (File file : files) {
FileBody fileBody = new FileBody(file);
multipartEntityBuilder.addPart(new String(file.getName().getBytes(), charset), fileBody);
}
// httpEntity
HttpEntity httpEntity = multipartEntityBuilder.build();
httpPost.setEntity(httpEntity);
// 执行
response = httpClient.execute(httpPost);
// http 状态码
int statusCode = response.getStatusLine().getStatusCode();
result = EntityUtils.toString(response.getEntity(), Consts.UTF_8);
if (statusCode != HttpStatus.SC_OK) {
throw new Exception("发送HTTP-FILE请求:" + url + "出现异常,返回内容为:" + result);
}
} catch (Exception e) {
e.printStackTrace();
logger.error(e.getMessage(), e);
throw new Exception(e.getMessage(), e);
} finally {
response.close();
httpClient.close();
}
return result;
}
/**
* 获取http连接
*
* @return
* @throws Exception
* @author dubl
*/
public static CloseableHttpClient getHttpClient() throws Exception {
CloseableHttpClient httpClient = null;
try {
// 创建连接
httpClient = HttpClients.createDefault();
} catch (Exception e) {
e.printStackTrace();
logger.error("创建http连接出错。" + e.getMessage());
}
return httpClient;
}
/**
* 发送get请求
*
* @param url
* @param method
* @param params
* @return
* @throws Exception
*/
private static CloseableHttpResponse sendGetRequest(String url, Map params) throws Exception {
HttpGet httpGet = new HttpGet();
httpGet.setConfig(requestConfig);
if (params != null && params.size() > 0) {
// 组装get 带参url
StringBuffer urlParams = new StringBuffer(url + "?");
for (Map.Entry entry : params.entrySet()) {
if (urlParams.toString().endsWith("?")) {
urlParams.append(entry.getKey() + "=" + entry.getValue());
} else {
urlParams.append("&" + entry.getKey() + "=" + entry.getValue());
}
}
httpGet.setURI(new URI(urlParams.toString()));
} else {
httpGet.setURI(new URI(url));
}
return getHttpClient().execute(httpGet);
}
/**
* 发送post请求
*
* @param url
* @param method
* @param params
* @return
* @throws Exception
*/
private static CloseableHttpResponse sendPostRequest(String url, Map params) throws Exception {
HttpPost httpPost = new HttpPost(url);
httpPost.setConfig(requestConfig);
if (params != null && params.size() > 0) {
List nvpList = new ArrayList();
for (Map.Entry entry : params.entrySet()) {
nvpList.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
httpPost.setEntity(new UrlEncodedFormEntity(nvpList, encoding));
}
return getHttpClient().execute(httpPost);
}
/**
* 获取request的IP地址
*
* @param request
* @return
* @throws Exception
* @author dubl
*/
public static String getRequestIp(HttpServletRequest request) throws Exception {
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip.equals("0:0:0:0:0:0:0:1") ? "127.0.0.1" : ip;
}
}
欢迎指教~
参考资料
起个名忒难-httpclient 4.5.2 学习随笔（1）
起个名忒难-httpclient 4.5.2 学习随笔（2）
起个名忒难httpclient 4.5.2 学习随笔（3）
使用HttpClient实现文件的上传下载 - lijin1185374093 - 博客园
blog.csdn.net/comven2/article/details/52180620