什么是OkHttpClientUtil,针对这个问题,这篇文章详细介绍了相对应的分析和解答,希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
OkHttp 工具类
/** * OkHttpClient工具 * * @author yuhao.wang3 */ public abstract class OkHttpClientUtil { private static final Logger logger = LoggerFactory.getLogger(OkHttpClientUtil.class); private static OkHttpClient okHttpClient = new OkHttpClient.Builder() .connectTimeout(10, TimeUnit.SECONDS) .writeTimeout(10, TimeUnit.SECONDS) .readTimeout(20, TimeUnit.SECONDS) .sslSocketFactory(SSLSocketClient.getSSLSocketFactory(), SSLSocketClient.getTrustManager()) .hostnameVerifier(SSLSocketClient.getHostnameVerifier()) .build(); /** * 发起 application/json 的 post 请求 * * @param url 地址 * @param param 参数 * @param interfaceName 接口名称 * @return * @throws Exception */ public static <T> T postApplicationJson(String url, Object param, String interfaceName, Class<T> clazz) { // 生成requestBody RequestBody requestBody = FormBody.create(MediaType.parse("application/json; charset=utf-8") , JSON.toJSONString(param)); return post(url, interfaceName, requestBody, param, null, clazz); } /** * 发起 application/json 的 post 请求 * * @param url 地址 * @param param 参数 * @param interfaceName 接口名称 * @return * @throws Exception */ public static <T> T postApplicationJson(String url, Object param, Map<String, String> header, String interfaceName, Class<T> clazz) { // 生成requestBody RequestBody requestBody = FormBody.create(MediaType.parse("application/json; charset=utf-8") , JSON.toJSONString(param)); return post(url, interfaceName, requestBody, param, header, clazz); } /** * 发起 x-www-form-urlencoded 的 post 请求 * * @param url 地址 * @param param 参数 * @param interfaceName 接口名称 * @return * @throws Exception */ public static <T> T postApplicationXWwwFormUrlencoded(String url, Object param, String interfaceName, Class<T> clazz) { Map<String, String> paramMap = JSON.parseObject(JSON.toJSONString(param), new TypeReference<Map<String, String>>() { }); // 生成requestBody StringBuilder content = new StringBuilder(128); for (Map.Entry<String, String> entry : paramMap.entrySet()) { content.append(entry.getKey()).append("=").append(entry.getValue()).append("&"); } if (content.length() > 0) { content.deleteCharAt(content.length() - 1); } RequestBody requestBody = FormBody.create(MediaType.parse("application/x-www-form-urlencoded"), content.toString()); return post(url, interfaceName, requestBody, param, null, clazz); } /** * 发起post请求,不做任何签名 * * @param url 发送请求的URL * @param interfaceName 接口名称 * @param requestBody 请求体 * @param param 参数 */ public static <T> T post(String url, String interfaceName, RequestBody requestBody, Object param, Map<String, String> headers, Class<T> clazz) { Request.Builder builder = new Request.Builder() //请求的url .url(url) .post(requestBody); if (MapUtils.isNotEmpty(headers)) { for (String key : headers.keySet()) { builder.addHeader(key, headers.get(key)); } } Request request = builder.build(); Response response = null; String result = ""; String errorMsg = ""; try { //创建/Call response = okHttpClient.newCall(request).execute(); if (!response.isSuccessful()) { logger.error("访问外部系统异常 {}: {}", url, response.toString()); errorMsg = String.format("访问外部系统异常:%s", response.toString()); throw new RemoteAccessException(errorMsg); } result = response.body().string(); } catch (RemoteAccessException e) { logger.warn(e.getMessage(), e); result = e.getMessage(); throw e; } catch (Exception e) { logger.warn(e.getMessage(), e); if (Objects.isNull(response)) { errorMsg = String.format("访问外部系统异常::%s", e.getMessage()); throw new RemoteAccessException(errorMsg, e); } errorMsg = String.format("访问外部系统异常:::%s", response.toString()); throw new RemoteAccessException(errorMsg, e); } finally { logger.info("请求 {} {},请求参数:{}, header:{}, 返回参数:{}", interfaceName, url, JSON.toJSONString(param), JSON.toJSONString(headers), StringUtils.isEmpty(result) ? errorMsg : result); } return JSON.parseObject(result, clazz); } }
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