成立网站是不是需要先成立公司,iis wordpress 兼容,创业计划书建设网站,临沂建设规划局网站项目中经常会用到向第三方系统发送请求来传递数据或者获得信息#xff0c;一般用的比较多的为HttpClient 和 HttpRequest#xff0c;这里简要总结一下 HttpClient 和 HttpRequest 的用法
一、HttpClient
1. 发送get请求
public static String get(String url, MapStri…项目中经常会用到向第三方系统发送请求来传递数据或者获得信息一般用的比较多的为HttpClient 和 HttpRequest这里简要总结一下 HttpClient 和 HttpRequest 的用法
一、HttpClient
1. 发送get请求
public static String get(String url, MapString, String headMap, int timeout) {String result null;CloseableHttpClient httpclient HttpClients.createDefault();CloseableHttpResponse response null;try {HttpGet httpGet new HttpGet(url);RequestConfig requestConfig RequestConfig.custom().setConnectTimeout(timeout).build();httpGet.setConfig(requestConfig);setHead(httpGet, headMap);response httpclient.execute(httpGet);HttpEntity entity response.getEntity();result EntityUtils.toString(entity, UTF-8);EntityUtils.consume(entity);} catch (Exception e) {LOG.error(HttpGet [{}] error: {}, url, e.getMessage(), e);throw new RuntimeException(e.getMessage(), e);} finally {try {if (null ! response) {response.close(); }httpclient.close();} catch (IOException e) {LOG.error(HttpGet [{}] httpclient close error: {}, url, e.getMessage(), e);}}return result;
}
1. 发送post请求
public static String postJson(String url, String body, MapString, String headMap, int timeout) {CloseableHttpClient httpClient HttpClients.createDefault();CloseableHttpResponse response null;try {HttpPost httpPost new HttpPost(url);httpPost.addHeader(Content-Type, application/json;charsetutf-8);setHead(httpPost, headMap);RequestConfig requestConfig RequestConfig.custom().setConnectTimeout(timeout).build();httpPost.setConfig(requestConfig);httpPost.setEntity(new StringEntity(body, UTF-8));response httpClient.execute(httpPost);HttpEntity entity response.getEntity();String responseContent EntityUtils.toString(entity, UTF-8);EntityUtils.consume(entity);return responseContent;} catch (Exception e) {LOG.error(HttpPostJson [{}] error: {}, url, e.getMessage(), e);throw new RuntimeException(e.getMessage(), e);} finally {try {response.close();httpClient.close();} catch (IOException e) {LOG.error(HttpPostJson [{}] httpclient close error: {}, url, e.getMessage(), e);}}
}
private static void setHead(HttpRequestBase httpRequestBase, MapString, String headMap) {if (headMap ! null headMap.size() 0) {SetString keySet headMap.keySet();for (String key : keySet) {httpRequestBase.addHeader(key, headMap.get(key));}}
}
优点连接池复用HTTP连接、重试、代理机制社区活跃性能更加优异
缺点配置和API使用较为复杂
二、HttpRequest
1. 发送get请求
public static String get(String methodName, String url, MapString, Object paramMap, MapString, String headers){return HttpRequest.get(url).addHeaders(headers).form(paramMap).execute().body();
}
2. 发送post请求
public static String postForm(String methodName, String url, MapString, Object paramMap, MapString, String headers, String paramStr){return HttpRequest.post(url).addHeaders(headers).form(paramMap).body(paramStr).execute().body();
}
优点功能简单整体比较易用
缺点性能一般社区支持较弱
三、对比
hutool 的 HttpRequest 底层是基于 HttpClient 的是对其进行了封装提供了更加简便的API请求使用 HttpRequest 可在一行代码中实现发送简单的HTTP请求如果需要使用 HttpClient 更加复杂的操作则可以通过自定义 HttpClient 并通过 setHttpClient() 方法传入 HttpClient
例如通过自定义Httpclient实现设置最大连接数量
// 创建连接池管理器
PoolingHttpClientConnectionManager connectionManager new PoolingHttpClientConnectionManager();
connectionManager.setMaxTotal(100); // 设置最大连接数
connectionManager.setDefaultMaxPerRoute(20); // 设置每个路由的最大连接数// 创建自定义的HttpClient
HttpClientBuilder httpClientBuilder HttpClientBuilder.create().setConnectionManager(connectionManager);// 使用 Hutool 的 HttpRequest 发送请求
HttpResponse response HttpRequest.get(https://example.com).timeout(5000) // 设置超时时间.setHttpClient(httpClientBuilder.build()) // 设置自定义的HttpClient.execute();
总结
小型简单项目可使用 HttpRequest 快速请求较大型复杂项目适合使用 HttpClientHttpClient 引入 httpclient 依赖HttpRequest 引入 hutool 依赖如果有连接池、重试、代理等机制的需求则可使用 HttpClient高性能高并发有复杂Http操作的场景则可使用 HttpClient
