import com.alibaba.fastjson.JSONObject; import com.alibaba.fastjson.TypeReference; import org.apache.commons.lang3.StringUtils; import org.apache.http.HttpEntity; import org.apache.http.client.entity.EntityBuilder; import org.apache.http.client.methods.*; import org.apache.http.config.Registry; import org.apache.http.config.RegistryBuilder; import org.apache.http.conn.socket.ConnectionSocketFactory; import org.apache.http.conn.socket.PlainConnectionSocketFactory; import org.apache.http.conn.ssl.NoopHostnameVerifier; import org.apache.http.conn.ssl.SSLConnectionSocketFactory; import org.apache.http.entity.ContentType; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClientBuilder; import org.apache.http.impl.client.HttpClients; import org.apache.http.impl.conn.PoolingHttpClientConnectionManager; import org.apache.http.ssl.SSLContexts; import org.apache.http.ssl.SSLInitializationException; import org.apache.http.ssl.TrustStrategy; import org.apache.http.util.EntityUtils; import java.io.IOException; import java.net.URI; import java.security.cert.X509Certificate; import java.util.LinkedHashMap; import java.util.Map; /** * 最低 JDK 1.6 * maven pom： * * org.apache.httpcomponents * httpmime * 4.5.1 * * * org.apache.httpcomponents * httpclient * 4.5.1 * * * com.alibaba * fastjson * 1.2.50 * * * org.apache.commons * commons-lang3 * 3.11 * */ public class HttpSample { private static CloseableHttpClient httpClient = null; private static final String DEFAULT_CHAR_SET = "UTF-8"; public static void main(String[] args) throws IOException { //设置请求方法支持GET POST HEAD OPTIONS PUT PATCH DELETE TRACE HttpRequestBase request = getRquest("{method}"); //设置请求url request.setURI(URI.create("{url}")); //设置header Map headers = JSONObject.parseObject("{headers}", new TypeReference>() { }); for (Map.Entry h : headers.entrySet()) { request.setHeader(h.getKey(), h.getValue()); } //设置requestbody中的参数 String json = "{bodyParams}"; if (StringUtils.isNotBlank(json) && request instanceof HttpEntityEnclosingRequestBase) { HttpEntity entity = EntityBuilder.create() .setContentEncoding(DEFAULT_CHAR_SET) .setContentType(ContentType.APPLICATION_JSON) .setText(json) .build(); ((HttpEntityEnclosingRequestBase) request).setEntity(entity); } CloseableHttpResponse response = httpClient.execute(request); try { if (null == response || null == response.getStatusLine()) { throw new RuntimeException("请求结果无法解析！"); } int statusCode = response.getStatusLine().getStatusCode(); System.out.println("responseCode:" + statusCode); System.out.println("result:" + EntityUtils.toString(response.getEntity(), DEFAULT_CHAR_SET)); } finally { if (response != null) { response.close(); } } } /** * 初始化httpclient,样例代码不可用于生产，仅支持简单请求发送，核心参数未设置 */ static { try { Registry registry = RegistryBuilder.create() .register("http", PlainConnectionSocketFactory.getSocketFactory()) .register("https", new SSLConnectionSocketFactory(SSLContexts.custom().loadTrustMaterial(null, new TrustStrategy() { public boolean isTrusted(X509Certificate[] x509Certificates, String s) { return true; } }).build(), NoopHostnameVerifier.INSTANCE)) .build(); PoolingHttpClientConnectionManager gcm = new PoolingHttpClientConnectionManager(registry); HttpClientBuilder httpClientBuilder = HttpClients.custom(); httpClient = httpClientBuilder .setConnectionManager(gcm) .build(); } catch (Throwable e) { throw new SSLInitializationException(e.getMessage(), e); } } private static HttpRequestBase getRquest(String method) { if (HttpGet.METHOD_NAME.equals(method)) { return new HttpGet(); } else if (HttpPost.METHOD_NAME.equals(method)) { return new HttpPost(); } else if (HttpHead.METHOD_NAME.equals(method)) { return new HttpHead(); } else if (HttpOptions.METHOD_NAME.equals(method)) { return new HttpOptions(); } else if (HttpPut.METHOD_NAME.equals(method)) { return new HttpPut(); } else if (HttpPatch.METHOD_NAME.equals(method)) { return new HttpPatch(); } else if (HttpDelete.METHOD_NAME.equals(method)) { return new HttpDelete(); } else if (HttpTrace.METHOD_NAME.equals(method)) { return new HttpTrace(); } return new HttpPost(); } }

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