{"id":782,"date":"2013-10-11T14:39:49","date_gmt":"2013-10-11T06:39:49","guid":{"rendered":"http:\/\/www.yeetrack.com\/?p=782"},"modified":"2013-10-11T14:39:49","modified_gmt":"2013-10-11T06:39:49","slug":"httpclient4-3%e6%95%99%e7%a8%8b-%e7%ac%ac%e4%ba%8c%e7%ab%a0-%e8%bf%9e%e6%8e%a5%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.yeetrack.com\/?p=782","title":{"rendered":"HttpClient4.3\u6559\u7a0b \u7b2c\u4e8c\u7ae0 \u8fde\u63a5\u7ba1\u7406"},"content":{"rendered":"<p><meta http-equiv=\"content-type\" content=\"text\/html; charset=utf-8\" \/><br \/>\n<a name=\"Connection-persistence\"><\/a><\/p>\n<h2>2.1.\u6301\u4e45\u8fde\u63a5<\/h2>\n<p>\u4e24\u4e2a\u4e3b\u673a\u5efa\u7acb\u8fde\u63a5\u7684\u8fc7\u7a0b\u662f\u5f88\u590d\u6742\u7684\u4e00\u4e2a\u8fc7\u7a0b\uff0c\u6d89\u53ca\u5230\u591a\u4e2a\u6570\u636e\u5305\u7684\u4ea4\u6362\uff0c\u5e76\u4e14\u4e5f\u5f88\u8017\u65f6\u95f4\u3002Http\u8fde\u63a5\u9700\u8981\u7684\u4e09\u6b21\u63e1\u624b\u5f00\u9500\u5f88\u5927\uff0c\u8fd9\u4e00\u5f00\u9500\u5bf9\u4e8e\u6bd4\u8f83\u5c0f\u7684http\u6d88\u606f\u6765\u8bf4\u66f4\u5927\u3002\u4f46\u662f\u5982\u679c\u6211\u4eec\u76f4\u63a5\u4f7f\u7528\u5df2\u7ecf\u5efa\u7acb\u597d\u7684http\u8fde\u63a5\uff0c\u8fd9\u6837\u82b1\u8d39\u5c31\u6bd4\u8f83\u5c0f\uff0c\u541e\u5410\u7387\u66f4\u5927\u3002<\/p>\n<p>HTTP\/1.1\u9ed8\u8ba4\u5c31\u652f\u6301Http\u8fde\u63a5\u590d\u7528\u3002\u517c\u5bb9HTTP\/1.0\u7684\u7ec8\u7aef\u4e5f\u53ef\u4ee5\u901a\u8fc7\u58f0\u660e\u6765\u4fdd\u6301\u8fde\u63a5\uff0c\u5b9e\u73b0\u8fde\u63a5\u590d\u7528\u3002HTTP\u4ee3\u7406\u4e5f\u53ef\u4ee5\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u4fdd\u6301\u8fde\u63a5\u4e0d\u91ca\u653e\uff0c\u65b9\u4fbf\u540e\u7eed\u5411\u8fd9\u4e2a\u4e3b\u673a\u53d1\u9001http\u8bf7\u6c42\u3002\u8fd9\u79cd\u4fdd\u6301\u8fde\u63a5\u4e0d\u91ca\u653e\u7684\u60c5\u51b5\u5b9e\u9645\u4e0a\u662f\u5efa\u7acb\u7684\u6301\u4e45\u8fde\u63a5\u3002HttpClient\u4e5f\u652f\u6301\u6301\u4e45\u8fde\u63a5\u3002<\/p>\n<p><a name=\"HTTP-connection-routing\"><\/a><\/p>\n<h2>2.2.HTTP\u8fde\u63a5\u8def\u7531<!--more--><\/h2>\n<p>HttpClient\u65e2\u53ef\u4ee5\u76f4\u63a5\u3001\u53c8\u53ef\u4ee5\u901a\u8fc7\u591a\u4e2a\u4e2d\u8f6c\u8def\u7531\uff08hops\uff09\u548c\u76ee\u6807\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5\u3002HttpClient\u628a\u8def\u7531\u5206\u4e3a\u4e09\u79cdplain\uff08\u660e\u6587 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name=\"Route-computation\"><\/a><\/p>\n<h3>2.2.1.\u8def\u7531\u8ba1\u7b97<\/h3>\n<p><code>RouteInfo<\/code>\u63a5\u53e3\u5305\u542b\u4e86\u6570\u636e\u5305\u53d1\u9001\u5230\u76ee\u6807\u4e3b\u673a\u8fc7\u7a0b\u4e2d\uff0c\u7ecf\u8fc7\u7684\u8def\u7531\u4fe1\u606f\u3002<code>HttpRoute<\/code>\u7c7b\u7ee7\u627f\u4e86<code>RouteInfo<\/code>\u63a5\u53e3\uff0c\u662f<code>RouteInfo<\/code>\u7684\u5177\u4f53\u5b9e\u73b0\uff0c\u8fd9\u4e2a\u7c7b\u662f\u4e0d\u5141\u8bb8\u4fee\u6539\u7684\u3002<code>HttpTracker<\/code>\u7c7b\u4e5f\u5b9e\u73b0\u4e86<code>RouteInfo<\/code>\u63a5\u53e3\uff0c\u5b83\u662f\u53ef\u53d8\u7684\uff0cHttpClient\u4f1a\u5728\u5185\u90e8\u4f7f\u7528\u8fd9\u4e2a\u7c7b\u6765\u63a2\u6d4b\u5230\u76ee\u6807\u4e3b\u673a\u7684\u5269\u4f59\u8def\u7531\u3002<code>HttpRouteDirector<\/code>\u662f\u4e2a\u8f85\u52a9\u7c7b\uff0c\u53ef\u4ee5\u5e2e\u52a9\u8ba1\u7b97\u6570\u636e\u5305\u7684\u4e0b\u4e00\u6b65\u8def\u7531\u4fe1\u606f\u3002\u8fd9\u4e2a\u7c7b\u4e5f\u662f\u5728HttpClient\u5185\u90e8\u4f7f\u7528\u7684\u3002<\/p>\n<p><code>HttpRoutePlanner<\/code>\u63a5\u53e3\u53ef\u4ee5\u7528\u6765\u8868\u793a\u57fa\u4e8ehttp\u4e0a\u4e0b\u6587\u60c5\u51b5\u4e0b\uff0c\u5ba2\u6237\u7aef\u5230\u670d\u52a1\u5668\u7684\u8def\u7531\u8ba1\u7b97\u7b56\u7565\u3002HttpClient\u6709\u4e24\u4e2a<code>HttpRoutePlanner<\/code>\u7684\u5b9e\u73b0\u7c7b\u3002<code>SystemDefaultRoutePlanner<\/code>\u8fd9\u4e2a\u7c7b\u57fa\u4e8e<code>java.net.ProxySelector<\/code>\uff0c\u5b83\u9ed8\u8ba4\u4f7f\u7528jvm\u7684\u4ee3\u7406\u914d\u7f6e\u4fe1\u606f\uff0c\u8fd9\u4e2a\u914d\u7f6e\u4fe1\u606f\u4e00\u822c\u6765\u81ea\u7cfb\u7edf\u914d\u7f6e\u6216\u8005\u6d4f\u89c8\u5668\u914d\u7f6e\u3002<code>DefaultProxyRoutePlanner<\/code>\u8fd9\u4e2a\u7c7b\u65e2\u4e0d\u4f7f\u7528java\u672c\u8eab\u7684\u914d\u7f6e\uff0c\u4e5f\u4e0d\u4f7f\u7528\u7cfb\u7edf\u6216\u8005\u6d4f\u89c8\u5668\u7684\u914d\u7f6e\u3002\u5b83\u901a\u5e38\u901a\u8fc7\u9ed8\u8ba4\u4ee3\u7406\u6765\u8ba1\u7b97\u8def\u7531\u4fe1\u606f\u3002<\/p>\n<p><a name=\"Secure-HTTP-connections\"><\/a><\/p>\n<h3>2.2.2. \u5b89\u5168\u7684Http\u8fde\u63a5<\/h3>\n<p>\u4e3a\u4e86\u9632\u6b62\u901a\u8fc7Http\u6d88\u606f\u4f20\u9012\u7684\u4fe1\u606f\u4e0d\u88ab\u672a\u6388\u6743\u7684\u7b2c\u4e09\u65b9\u83b7\u53d6\u3001\u622a\u83b7\uff0cHttp\u53ef\u4ee5\u4f7f\u7528SSL\/TLS\u534f\u8bae\u6765\u4fdd\u8bc1http\u4f20\u8f93\u5b89\u5168\uff0c\u8fd9\u4e2a\u534f\u8bae\u662f\u5f53\u524d\u4f7f\u7528\u6700\u5e7f\u7684\u3002\u5f53\u7136\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u7684\u52a0\u5bc6\u6280\u672f\u3002\u4f46\u662f\u901a\u5e38\u60c5\u51b5\u4e0b\uff0cHttp\u4fe1\u606f\u4f1a\u5728\u52a0\u5bc6\u7684SSL\/TLS\u8fde\u63a5\u4e0a\u8fdb\u884c\u4f20\u8f93\u3002<\/p>\n<p><a name=\"HTTP-connection-managers\"><\/a><\/p>\n<h2>2.3. HTTP\u8fde\u63a5\u7ba1\u7406\u5668<\/h2>\n<p><a name=\"Managed-connections-and-connection-managers\"><\/a><\/p>\n<h3>2.3.1. \u7ba1\u7406\u8fde\u63a5\u548c\u8fde\u63a5\u7ba1\u7406\u5668<\/h3>\n<p>Http\u8fde\u63a5\u662f\u590d\u6742\uff0c\u6709\u72b6\u6001\u7684\uff0c\u7ebf\u7a0b\u4e0d\u5b89\u5168\u7684\u5bf9\u8c61\uff0c\u6240\u4ee5\u5b83\u5fc5\u987b\u88ab\u59a5\u5584\u7ba1\u7406\u3002\u4e00\u4e2aHttp\u8fde\u63a5\u5728\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u88ab\u4e00\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u3002HttpClient\u4f7f\u7528\u4e00\u4e2a\u53eb\u505aHttp\u8fde\u63a5\u7ba1\u7406\u5668\u7684\u7279\u6b8a\u5b9e\u4f53\u7c7b\u6765\u7ba1\u7406Http\u8fde\u63a5\uff0c\u8fd9\u4e2a\u5b9e\u4f53\u7c7b\u8981\u5b9e\u73b0<code>HttpClientConnectionManager<\/code>\u63a5\u53e3\u3002Http\u8fde\u63a5\u7ba1\u7406\u5668\u5728\u65b0\u5efahttp\u8fde\u63a5\u65f6\uff0c\u4f5c\u4e3a\u5de5\u5382\u7c7b;\u7ba1\u7406\u6301\u4e45http\u8fde\u63a5\u7684\u751f\u547d\u5468\u671f;\u540c\u6b65\u6301\u4e45\u8fde\u63a5\uff08\u786e\u4fdd\u7ebf\u7a0b\u5b89\u5168\uff0c\u5373\u4e00\u4e2ahttp\u8fde\u63a5\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u88ab\u4e00\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\uff09\u3002Http\u8fde\u63a5\u7ba1\u7406\u5668\u548c<code>ManagedHttpClientConnection<\/code>\u7684\u5b9e\u4f8b\u7c7b\u4e00\u8d77\u53d1\u6325\u4f5c\u7528\uff0c<code>ManagedHttpClientConnection<\/code>\u5b9e\u4f53\u7c7b\u53ef\u4ee5\u770b\u505ahttp\u8fde\u63a5\u7684\u4e00\u4e2a\u4ee3\u7406\u670d\u52a1\u5668\uff0c\u7ba1\u7406\u7740I\/O\u64cd\u4f5c\u3002\u5982\u679c\u4e00\u4e2aHttp\u8fde\u63a5\u88ab\u91ca\u653e\u6216\u8005\u88ab\u5b83\u7684\u6d88\u8d39\u8005\u660e\u786e\u8868\u793a\u8981\u5173\u95ed\uff0c\u90a3\u4e48\u5e95\u5c42\u7684\u8fde\u63a5\u5c31\u4f1a\u548c\u5b83\u7684\u4ee3\u7406\u8fdb\u884c\u5206\u79bb\uff0c\u5e76\u4e14\u8be5\u8fde\u63a5\u4f1a\u88ab\u4ea4\u8fd8\u7ed9\u8fde\u63a5\u7ba1\u7406\u5668\u3002\u8fd9\u662f\uff0c\u5373\u4f7f\u670d\u52a1\u6d88\u8d39\u8005\u4ecd\u7136\u6301\u6709\u4ee3\u7406\u7684\u5f15\u7528\uff0c\u5b83\u4e5f\u4e0d\u80fd\u518d\u6267\u884cI\/O\u64cd\u4f5c\uff0c\u6216\u8005\u66f4\u6539Http\u8fde\u63a5\u7684\u72b6\u6001\u3002<\/p>\n<p>\u4e0b\u9762\u7684\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u4ece\u8fde\u63a5\u7ba1\u7406\u5668\u4e2d\u53d6\u5f97\u4e00\u4e2ahttp\u8fde\u63a5\uff1a<\/p>\n<pre><code>    HttpClientContext context = HttpClientContext.create();\n    HttpClientConnectionManager connMrg = new BasicHttpClientConnectionManager();\n    HttpRoute route = new HttpRoute(new HttpHost(\"www.yeetrack.com\", 80));\n    \/\/ \u83b7\u53d6\u65b0\u7684\u8fde\u63a5. \u8fd9\u91cc\u53ef\u80fd\u8017\u8d39\u5f88\u591a\u65f6\u95f4\n    ConnectionRequest connRequest = connMrg.requestConnection(route, null);\n    \/\/ 10\u79d2\u8d85\u65f6\n    HttpClientConnection conn = connRequest.get(10, TimeUnit.SECONDS);\n    try {\n        \/\/ \u5982\u679c\u521b\u5efa\u8fde\u63a5\u5931\u8d25\n        if (!conn.isOpen()) {\n            \/\/ establish connection based on its route info\n            connMrg.connect(conn, route, 1000, context);\n            \/\/ and mark it as route complete\n            connMrg.routeComplete(conn, route, context);\n        }\n        \/\/ \u8fdb\u884c\u81ea\u5df1\u7684\u64cd\u4f5c.\n    } finally {\n        connMrg.releaseConnection(conn, null, 1, TimeUnit.MINUTES);\n    }\n<\/code><\/pre>\n<p>\u5982\u679c\u8981\u7ec8\u6b62\u8fde\u63a5\uff0c\u53ef\u4ee5\u8c03\u7528<code>ConnectionRequest<\/code>\u7684<code>cancel()<\/code>\u65b9\u6cd5\u3002\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u89e3\u9501\u88ab<code>ConnectionRequest<\/code>\u7c7b<code>get()<\/code>\u65b9\u6cd5\u963b\u585e\u7684\u7ebf\u7a0b\u3002<\/p>\n<p><a name=\"&quot;Simple-connection-manager\"><\/a><\/p>\n<h3>2.3.2.\u7b80\u5355\u8fde\u63a5\u7ba1\u7406\u5668<\/h3>\n<p><code>BasicHttpClientConnectionManager<\/code>\u662f\u4e2a\u7b80\u5355\u7684\u8fde\u63a5\u7ba1\u7406\u5668\uff0c\u5b83\u4e00\u6b21\u53ea\u80fd\u7ba1\u7406\u4e00\u4e2a\u8fde\u63a5\u3002\u5c3d\u7ba1\u8fd9\u4e2a\u7c7b\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u5b83\u5728\u540c\u4e00\u65f6\u95f4\u4e5f\u53ea\u80fd\u88ab\u4e00\u4e2a\u7ebf\u7a0b\u4f7f\u7528\u3002<code>BasicHttpClientConnectionManager<\/code>\u4f1a\u5c3d\u91cf\u91cd\u7528\u65e7\u7684\u8fde\u63a5\u6765\u53d1\u9001\u540e\u7eed\u7684\u8bf7\u6c42\uff0c\u5e76\u4e14\u4f7f\u7528\u76f8\u540c\u7684\u8def\u7531\u3002\u5982\u679c\u540e\u7eed\u8bf7\u6c42\u7684\u8def\u7531\u548c\u65e7\u8fde\u63a5\u4e2d\u7684\u8def\u7531\u4e0d\u5339\u914d\uff0c<code>BasicHttpClientConnectionManager<\/code>\u5c31\u4f1a\u5173\u95ed\u5f53\u524d\u8fde\u63a5\uff0c\u4f7f\u7528\u8bf7\u6c42\u4e2d\u7684\u8def\u7531\u91cd\u65b0\u5efa\u7acb\u8fde\u63a5\u3002\u5982\u679c\u5f53\u524d\u7684\u8fde\u63a5\u6b63\u5728\u88ab\u5360\u7528\uff0c\u4f1a\u629b\u51fa<code>java.lang.IllegalStateException<\/code>\u5f02\u5e38\u3002<\/p>\n<p><a name=\"Pooling-connection-manager\"><\/a><\/p>\n<h3>2.3.3.\u8fde\u63a5\u6c60\u7ba1\u7406\u5668<\/h3>\n<p>\u76f8\u5bf9<code>BasicHttpClientConnectionManager<\/code>\u6765\u8bf4\uff0c<code>PoolingHttpClientConnectionManager<\/code>\u662f\u4e2a\u66f4\u590d\u6742\u7684\u7c7b\uff0c\u5b83\u7ba1\u7406\u7740\u8fde\u63a5\u6c60\uff0c\u53ef\u4ee5\u540c\u65f6\u4e3a\u5f88\u591a\u7ebf\u7a0b\u63d0\u4f9bhttp\u8fde\u63a5\u8bf7\u6c42\u3002Connections are pooled on a per route basis.\u5f53\u8bf7\u6c42\u4e00\u4e2a\u65b0\u7684\u8fde\u63a5\u65f6\uff0c\u5982\u679c\u8fde\u63a5\u6c60\u6709\u6709\u53ef\u7528\u7684\u6301\u4e45\u8fde\u63a5\uff0c\u8fde\u63a5\u7ba1\u7406\u5668\u5c31\u4f1a\u4f7f\u7528\u5176\u4e2d\u7684\u4e00\u4e2a\uff0c\u800c\u4e0d\u662f\u518d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u8fde\u63a5\u3002<\/p>\n<p><code>PoolingHttpClientConnectionManager<\/code>\u7ef4\u62a4\u7684\u8fde\u63a5\u6570\u5728\u6bcf\u4e2a\u8def\u7531\u57fa\u7840\u548c\u603b\u6570\u4e0a\u90fd\u6709\u9650\u5236\u3002\u9ed8\u8ba4\uff0c\u6bcf\u4e2a\u8def\u7531\u57fa\u7840\u4e0a\u7684\u8fde\u63a5\u4e0d\u8d85\u8fc72\u4e2a\uff0c\u603b\u8fde\u63a5\u6570\u4e0d\u80fd\u8d85\u8fc720\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u8fd9\u4e2a\u9650\u5236\u53ef\u80fd\u4f1a\u592a\u5c0f\u4e86\uff0c\u5c24\u5176\u662f\u5f53\u670d\u52a1\u5668\u4e5f\u4f7f\u7528Http\u534f\u8bae\u65f6\u3002<\/p>\n<p>\u4e0b\u9762\u7684\u4f8b\u5b50\u6f14\u793a\u4e86\u5982\u679c\u8c03\u6574\u8fde\u63a5\u6c60\u7684\u53c2\u6570\uff1a<\/p>\n<pre><code>    PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();\n    \/\/ \u5c06\u6700\u5927\u8fde\u63a5\u6570\u589e\u52a0\u5230200\n    cm.setMaxTotal(200);\n    \/\/ \u5c06\u6bcf\u4e2a\u8def\u7531\u57fa\u7840\u7684\u8fde\u63a5\u589e\u52a0\u523020\n    cm.setDefaultMaxPerRoute(20);\n    \/\/\u5c06\u76ee\u6807\u4e3b\u673a\u7684\u6700\u5927\u8fde\u63a5\u6570\u589e\u52a0\u523050\n    HttpHost localhost = new HttpHost(\"www.yeetrack.com\", 80);\n    cm.setMaxPerRoute(new HttpRoute(localhost), 50);\n\n    CloseableHttpClient httpClient = HttpClients.custom()\n            .setConnectionManager(cm)\n            .build();\n<\/code><\/pre>\n<p><a name=\"Connection-manager-shutdown\"><\/a><\/p>\n<h3>2.3.4.\u5173\u95ed\u8fde\u63a5\u7ba1\u7406\u5668<\/h3>\n<p>\u5f53\u4e00\u4e2aHttpClient\u7684\u5b9e\u4f8b\u4e0d\u5728\u4f7f\u7528\uff0c\u6216\u8005\u5df2\u7ecf\u8131\u79bb\u5b83\u7684\u4f5c\u7528\u8303\u56f4\uff0c\u6211\u4eec\u9700\u8981\u5173\u6389\u5b83\u7684\u8fde\u63a5\u7ba1\u7406\u5668\uff0c\u6765\u5173\u95ed\u6389\u6240\u6709\u7684\u8fde\u63a5\uff0c\u91ca\u653e\u6389\u8fd9\u4e9b\u8fde\u63a5\u5360\u7528\u7684\u7cfb\u7edf\u8d44\u6e90\u3002<\/p>\n<pre><code>    CloseableHttpClient httpClient = &lt;...&gt;\n    httpClient.close();\n<\/code><\/pre>\n<p><a name=\"Multithreaded-request-execution\"><\/a><\/p>\n<h2>2.4.\u591a\u7ebf\u7a0b\u8bf7\u6c42\u6267\u884c<\/h2>\n<p>\u5f53\u4f7f\u7528\u4e86\u8bf7\u6c42\u8fde\u63a5\u6c60\u7ba1\u7406\u5668\uff08\u6bd4\u5982<code>PoolingClientConnectionManager<\/code>\uff09\u540e\uff0cHttpClient\u5c31\u53ef\u4ee5\u540c\u65f6\u6267\u884c\u591a\u4e2a\u7ebf\u7a0b\u7684\u8bf7\u6c42\u4e86\u3002<\/p>\n<p><code>PoolingClientConnectionManager<\/code>\u4f1a\u6839\u636e\u5b83\u7684\u914d\u7f6e\u6765\u5206\u914d\u8bf7\u6c42\u8fde\u63a5\u3002\u5982\u679c\u8fde\u63a5\u6c60\u4e2d\u7684\u6240\u6709\u8fde\u63a5\u90fd\u88ab\u5360\u7528\u4e86\uff0c\u90a3\u4e48\u540e\u7eed\u7684\u8bf7\u6c42\u5c31\u4f1a\u88ab\u963b\u585e\uff0c\u76f4\u5230\u6709\u8fde\u63a5\u88ab\u91ca\u653e\u56de\u8fde\u63a5\u6c60\u4e2d\u3002\u4e3a\u4e86\u9632\u6b62\u6c38\u8fdc\u963b\u585e\u7684\u60c5\u51b5\u53d1\u751f\uff0c\u6211\u4eec\u53ef\u4ee5\u628a<code>http.conn-manager.timeout<\/code>\u7684\u503c\u8bbe\u7f6e\u6210\u4e00\u4e2a\u6574\u6570\u3002\u5982\u679c\u5728\u8d85\u65f6\u65f6\u95f4\u5185\uff0c\u6ca1\u6709\u53ef\u7528\u8fde\u63a5\uff0c\u5c31\u4f1a\u629b\u51fa<code>ConnectionPoolTimeoutException<\/code>\u5f02\u5e38\u3002<\/p>\n<pre><code>    PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();\n    CloseableHttpClient httpClient = HttpClients.custom()\n            .setConnectionManager(cm)\n            .build();\n\n    \/\/ URL\u5217\u8868\u6570\u7ec4\n    String[] urisToGet = {\n        \"http:\/\/www.domain1.com\/\",\n        \"http:\/\/www.domain2.com\/\",\n        \"http:\/\/www.domain3.com\/\",\n        \"http:\/\/www.domain4.com\/\"\n    };\n\n    \/\/ \u4e3a\u6bcf\u4e2aurl\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\uff0cGetThread\u662f\u81ea\u5b9a\u4e49\u7684\u7c7b\n    GetThread[] threads = new GetThread[urisToGet.length];\n    for (int i = 0; i &lt; threads.length; i++) {\n        HttpGet httpget = new HttpGet(urisToGet[i]);\n        threads[i] = new GetThread(httpClient, httpget);\n    }\n\n    \/\/ \u542f\u52a8\u7ebf\u7a0b\n    for (int j = 0; j &lt; threads.length; j++) {\n        threads[j].start();\n    }\n\n    \/\/ join the threads\n    for (int j = 0; j &lt; threads.length; j++) {\n        threads[j].join();\n    }\n<\/code><\/pre>\n<p>\u5373\u4f7fHttpClient\u7684\u5b9e\u4f8b\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u53ef\u4ee5\u88ab\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u8bbf\u95ee\uff0c\u4f46\u662f\u4ecd\u65e7\u63a8\u8350\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u8981\u6709\u81ea\u5df1\u4e13\u7528\u5b9e\u4f8b\u7684HttpContext\u3002<\/p>\n<p>\u4e0b\u9762\u662fGetThread\u7c7b\u7684\u5b9a\u4e49\uff1a<\/p>\n<pre><code>    static class GetThread extends Thread {\n\n        private final CloseableHttpClient httpClient;\n        private final HttpContext context;\n        private final HttpGet httpget;\n\n        public GetThread(CloseableHttpClient httpClient, HttpGet httpget) {\n            this.httpClient = httpClient;\n            this.context = HttpClientContext.create();\n            this.httpget = httpget;\n        }\n\n        @Override\n        public void run() {\n            try {\n                CloseableHttpResponse response = httpClient.execute(\n                        httpget, context);\n                try {\n                    HttpEntity entity = response.getEntity();\n                } finally {\n                    response.close();\n                }\n            } catch (ClientProtocolException ex) {\n                \/\/ Handle protocol errors\n            } catch (IOException ex) {\n                \/\/ Handle I\/O errors\n            }\n        }\n\n    }\n<\/code><\/pre>\n<p><a name=\"Connection-eviction-policy\"><\/a><\/p>\n<h2>2.5. \u8fde\u63a5\u56de\u6536\u7b56\u7565<\/h2>\n<p>\u7ecf\u5178\u963b\u585eI\/O\u6a21\u578b\u7684\u4e00\u4e2a\u4e3b\u8981\u7f3a\u70b9\u5c31\u662f\u53ea\u6709\u5f53\u7ec4\u4fa7I\/O\u65f6\uff0csocket\u624d\u80fd\u5bf9I\/O\u4e8b\u4ef6\u505a\u51fa\u53cd\u5e94\u3002\u5f53\u8fde\u63a5\u88ab\u7ba1\u7406\u5668\u6536\u56de\u540e\uff0c\u8fd9\u4e2a\u8fde\u63a5\u4ecd\u7136\u5b58\u6d3b\uff0c\u4f46\u662f\u5374\u65e0\u6cd5\u76d1\u63a7socket\u7684\u72b6\u6001\uff0c\u4e5f\u65e0\u6cd5\u5bf9I\/O\u4e8b\u4ef6\u505a\u51fa\u53cd\u9988\u3002\u5982\u679c\u8fde\u63a5\u88ab\u670d\u52a1\u5668\u7aef\u5173\u95ed\u4e86\uff0c\u5ba2\u6237\u7aef\u76d1\u6d4b\u4e0d\u5230\u8fde\u63a5\u7684\u72b6\u6001\u53d8\u5316\uff08\u4e5f\u5c31\u65e0\u6cd5\u6839\u636e\u8fde\u63a5\u72b6\u6001\u7684\u53d8\u5316\uff0c\u5173\u95ed\u672c\u5730\u7684socket\uff09\u3002<\/p>\n<p>HttpClient\u4e3a\u4e86\u7f13\u89e3\u8fd9\u4e00\u95ee\u9898\u9020\u6210\u7684\u5f71\u54cd\uff0c\u4f1a\u5728\u4f7f\u7528\u67d0\u4e2a\u8fde\u63a5\u524d\uff0c\u76d1\u6d4b\u8fd9\u4e2a\u8fde\u63a5\u662f\u5426\u5df2\u7ecf\u8fc7\u65f6\uff0c\u5982\u679c\u670d\u52a1\u5668\u7aef\u5173\u95ed\u4e86\u8fde\u63a5\uff0c\u90a3\u4e48\u8fde\u63a5\u5c31\u4f1a\u5931\u6548\u3002\u8fd9\u79cd\u8fc7\u65f6\u68c0\u67e5\u5e76\u4e0d\u662f100%\u6709\u6548\uff0c\u5e76\u4e14\u4f1a\u7ed9\u6bcf\u4e2a\u8bf7\u6c42\u589e\u52a010\u523030\u6beb\u79d2\u989d\u5916\u5f00\u9500\u3002\u552f\u4e00\u4e00\u4e2a\u53ef\u884c\u7684\uff0c\u4e14does not involve a one thread per socket model for idle connections\u7684\u89e3\u51b3\u529e\u6cd5\uff0c\u662f\u5efa\u7acb\u4e00\u4e2a\u76d1\u63a7\u7ebf\u7a0b\uff0c\u6765\u4e13\u95e8\u56de\u6536\u7531\u4e8e\u957f\u65f6\u95f4\u4e0d\u6d3b\u52a8\u800c\u88ab\u5224\u5b9a\u4e3a\u5931\u6548\u7684\u8fde\u63a5\u3002\u8fd9\u4e2a\u76d1\u63a7\u7ebf\u7a0b\u53ef\u4ee5\u5468\u671f\u6027\u7684\u8c03\u7528<code>ClientConnectionManager<\/code>\u7c7b\u7684<code>closeExpiredConnections()<\/code>\u65b9\u6cd5\u6765\u5173\u95ed\u8fc7\u671f\u7684\u8fde\u63a5\uff0c\u56de\u6536\u8fde\u63a5\u6c60\u4e2d\u88ab\u5173\u95ed\u7684\u8fde\u63a5\u3002\u5b83\u4e5f\u53ef\u4ee5\u9009\u62e9\u6027\u7684\u8c03\u7528<code>ClientConnectionManager<\/code>\u7c7b\u7684<code>closeIdleConnections()<\/code>\u65b9\u6cd5\u6765\u5173\u95ed\u4e00\u6bb5\u65f6\u95f4\u5185\u4e0d\u6d3b\u52a8\u7684\u8fde\u63a5\u3002<\/p>\n<pre><code>    public static class IdleConnectionMonitorThread extends Thread {\n\n        private final HttpClientConnectionManager connMgr;\n        private volatile boolean shutdown;\n\n        public IdleConnectionMonitorThread(HttpClientConnectionManager connMgr) {\n            super();\n            this.connMgr = connMgr;\n        }\n\n        @Override\n        public void run() {\n            try {\n                while (!shutdown) {\n                    synchronized (this) {\n                        wait(5000);\n                        \/\/ \u5173\u95ed\u5931\u6548\u7684\u8fde\u63a5\n                        connMgr.closeExpiredConnections();\n                        \/\/ \u53ef\u9009\u7684, \u5173\u95ed30\u79d2\u5185\u4e0d\u6d3b\u52a8\u7684\u8fde\u63a5\n                        connMgr.closeIdleConnections(30, TimeUnit.SECONDS);\n                    }\n                }\n            } catch (InterruptedException ex) {\n                \/\/ terminate\n            }\n        }\n\n        public void shutdown() {\n            shutdown = true;\n            synchronized (this) {\n                notifyAll();\n            }\n        }\n\n    }\n<\/code><\/pre>\n<p><a name=\"&quot;Connection-keep-alive-strategy\"><\/a><\/p>\n<h2>2.6. \u8fde\u63a5\u5b58\u6d3b\u7b56\u7565<\/h2>\n<p>Http\u89c4\u8303\u6ca1\u6709\u89c4\u5b9a\u4e00\u4e2a\u6301\u4e45\u8fde\u63a5\u5e94\u8be5\u4fdd\u6301\u5b58\u6d3b\u591a\u4e45\u3002\u6709\u4e9bHttp\u670d\u52a1\u5668\u4f7f\u7528\u975e\u6807\u51c6\u7684<code>Keep-Alive<\/code>\u5934\u6d88\u606f\u548c\u5ba2\u6237\u7aef\u8fdb\u884c\u4ea4\u4e92\uff0c\u670d\u52a1\u5668\u7aef\u4f1a\u4fdd\u6301\u6570\u79d2\u65f6\u95f4\u5185\u4fdd\u6301\u8fde\u63a5\u3002HttpClient\u4e5f\u4f1a\u5229\u7528\u8fd9\u4e2a\u5934\u6d88\u606f\u3002\u5982\u679c\u670d\u52a1\u5668\u8fd4\u56de\u7684\u54cd\u5e94\u4e2d\u6ca1\u6709\u5305\u542b<code>Keep-Alive<\/code>\u5934\u6d88\u606f\uff0cHttpClient\u4f1a\u8ba4\u4e3a\u8fd9\u4e2a\u8fde\u63a5\u53ef\u4ee5\u6c38\u8fdc\u4fdd\u6301\u3002\u7136\u800c\uff0c\u5f88\u591a\u670d\u52a1\u5668\u90fd\u4f1a\u5728\u4e0d\u901a\u77e5\u5ba2\u6237\u7aef\u7684\u60c5\u51b5\u4e0b\uff0c\u5173\u95ed\u4e00\u5b9a\u65f6\u95f4\u5185\u4e0d\u6d3b\u52a8\u7684\u8fde\u63a5\uff0c\u6765\u8282\u7701\u670d\u52a1\u5668\u8d44\u6e90\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u9ed8\u8ba4\u7684\u7b56\u7565\u663e\u5f97\u592a\u4e50\u89c2\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u81ea\u5b9a\u4e49\u8fde\u63a5\u5b58\u6d3b\u7b56\u7565\u3002<\/p>\n<pre><code>    ConnectionKeepAliveStrategy myStrategy = new ConnectionKeepAliveStrategy() {\n\n        public long getKeepAliveDuration(HttpResponse response, HttpContext context) {\n            \/\/ Honor 'keep-alive' header\n            HeaderElementIterator it = new BasicHeaderElementIterator(\n                    response.headerIterator(HTTP.CONN_KEEP_ALIVE));\n            while (it.hasNext()) {\n                HeaderElement he = it.nextElement();\n                String param = he.getName();\n                String value = he.getValue();\n                if (value != null &amp;&amp; param.equalsIgnoreCase(\"timeout\")) {\n                    try {\n                        return Long.parseLong(value) * 1000;\n                    } catch(NumberFormatException ignore) {\n                    }\n                }\n            }\n            HttpHost target = (HttpHost) context.getAttribute(\n                    HttpClientContext.HTTP_TARGET_HOST);\n            if (\"www.naughty-server.com\".equalsIgnoreCase(target.getHostName())) {\n                \/\/ Keep alive for 5 seconds only\n                return 5 * 1000;\n            } else {\n                \/\/ otherwise keep alive for 30 seconds\n                return 30 * 1000;\n            }\n        }\n\n    };\n    CloseableHttpClient client = HttpClients.custom()\n            .setKeepAliveStrategy(myStrategy)\n            .build();\n<\/code><\/pre>\n<p><a name=\"Connection-socket-factories\"><\/a><\/p>\n<h2>2.7.socket\u8fde\u63a5\u5de5\u5382<\/h2>\n<p>Http\u8fde\u63a5\u4f7f\u7528<code>java.net.Socket<\/code>\u7c7b\u6765\u4f20\u8f93\u6570\u636e\u3002\u8fd9\u4f9d\u8d56\u4e8e<code>ConnectionSocketFactory<\/code>\u63a5\u53e3\u6765\u521b\u5efa\u3001\u521d\u59cb\u5316\u548c\u8fde\u63a5socket\u3002\u8fd9\u6837\u4e5f\u5c31\u5141\u8bb8HttpClient\u7684\u7528\u6237\u5728\u4ee3\u7801\u8fd0\u884c\u65f6\uff0c\u6307\u5b9asocket\u521d\u59cb\u5316\u7684\u4ee3\u7801\u3002<code>PlainConnectionSocketFactory<\/code>\u662f\u9ed8\u8ba4\u7684\u521b\u5efa\u3001\u521d\u59cb\u5316\u660e\u6587socket\uff08\u4e0d\u52a0\u5bc6\uff09\u7684\u5de5\u5382\u7c7b\u3002<\/p>\n<p>\u521b\u5efasocket\u548c\u4f7f\u7528socket\u8fde\u63a5\u5230\u76ee\u6807\u4e3b\u673a\u8fd9\u4e24\u4e2a\u8fc7\u7a0b\u662f\u5206\u79bb\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5728\u8fde\u63a5\u53d1\u751f\u963b\u585e\u65f6\uff0c\u5173\u95edsocket\u8fde\u63a5\u3002<\/p>\n<pre><code>    HttpClientContext clientContext = HttpClientContext.create();\n    PlainConnectionSocketFactory sf = PlainConnectionSocketFactory.getSocketFactory();\n    Socket socket = sf.createSocket(clientContext);\n    int timeout = 1000; \/\/ms\n    HttpHost target = new HttpHost(\"www.yeetrack.com\");\n    InetSocketAddress remoteAddress = new InetSocketAddress(\n        InetAddress.getByName(\"www.yeetrack.com\", 80);\n        \/\/connectSocket\u6e90\u7801\u4e2d\uff0c\u5b9e\u9645\u6ca1\u6709\u7528\u5230target\u53c2\u6570\n        sf.connectSocket(timeout, socket, target, remoteAddress, null, clientContext);\n<\/code><\/pre>\n<p><a name=\"Secure-socket-layering\"><\/a><\/p>\n<h3>2.7.1.\u5b89\u5168socket\u5206\u5c42<\/h3>\n<p><code>LayeredConnectionSocketFactory<\/code>\u662f<code>ConnectionSocketFactory<\/code>\u7684\u62d3\u5c55\u63a5\u53e3\u3002\u5206\u5c42socket\u5de5\u5382\u7c7b\u53ef\u4ee5\u5728\u660e\u6587socket\u7684\u57fa\u7840\u4e0a\u521b\u5efasocket\u8fde\u63a5\u3002\u5206\u5c42socket\u4e3b\u8981\u7528\u4e8e\u5728\u4ee3\u7406\u670d\u52a1\u5668\u4e4b\u95f4\u521b\u5efa\u5b89\u5168socket\u3002HttpClient\u4f7f\u7528<code>SSLSocketFactory<\/code>\u8fd9\u4e2a\u7c7b\u5b9e\u73b0\u5b89\u5168socket\uff0c<code>SSLSocketFactory<\/code>\u5b9e\u73b0\u4e86SSL\/TLS\u5206\u5c42\u3002\u8bf7\u77e5\u6653\uff0cHttpClient\u6ca1\u6709\u81ea\u5b9a\u4e49\u4efb\u4f55\u52a0\u5bc6\u7b97\u6cd5\u3002\u5b83\u5b8c\u5168\u4f9d\u8d56\u4e8eJava\u52a0\u5bc6\u6807\u51c6\uff08JCE\uff09\u548c\u5b89\u5168\u5957\u63a5\u5b57\uff08JSEE\uff09\u62d3\u5c55\u3002<\/p>\n<p><a name=\"Integration-with-connection-manager\"><\/a><\/p>\n<h3>2.7.2.\u96c6\u6210\u8fde\u63a5\u7ba1\u7406\u5668<\/h3>\n<p>\u81ea\u5b9a\u4e49\u7684socket\u5de5\u5382\u7c7b\u53ef\u4ee5\u548c\u6307\u5b9a\u7684\u534f\u8bae\uff08Http\u3001Https\uff09\u8054\u7cfb\u8d77\u6765\uff0c\u7528\u6765\u521b\u5efa\u81ea\u5b9a\u4e49\u7684\u8fde\u63a5\u7ba1\u7406\u5668\u3002<\/p>\n<pre><code>    ConnectionSocketFactory plainsf = &lt;...&gt;\n    LayeredConnectionSocketFactory sslsf = &lt;...&gt;\n    Registry&lt;ConnectionSocketFactory&gt; r = RegistryBuilder.&lt;ConnectionSocketFactory&gt;create()\n            .register(\"http\", plainsf)\n            .register(\"https\", sslsf)\n            .build();\n\n    HttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(r);\n    HttpClients.custom()\n            .setConnectionManager(cm)\n            .build();\n<\/code><\/pre>\n<p><a name=\"SSL-TLS-customization\"><\/a><\/p>\n<h3>2.7.3.SSL\/TLS\u5b9a\u5236<\/h3>\n<p>HttpClient\u4f7f\u7528<code>SSLSocketFactory<\/code>\u6765\u521b\u5efassl\u8fde\u63a5\u3002<code>SSLSocketFactory<\/code>\u5141\u8bb8\u7528\u6237\u9ad8\u5ea6\u5b9a\u5236\u3002\u5b83\u53ef\u4ee5\u63a5\u53d7<code>javax.net.ssl.SSLContext<\/code>\u8fd9\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u4f5c\u4e3a\u53c2\u6570\uff0c\u6765\u521b\u5efa\u81ea\u5b9a\u4e49\u7684ssl\u8fde\u63a5\u3002<\/p>\n<pre><code>    HttpClientContext clientContext = HttpClientContext.create();\n    KeyStore myTrustStore = &lt;...&gt;\n    SSLContext sslContext = SSLContexts.custom()\n            .useTLS()\n            .loadTrustMaterial(myTrustStore)\n            .build();\n    SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext);\n<\/code><\/pre>\n<p><a name=\"Hostname-verification\"><\/a><\/p>\n<h3>2.7.4.\u57df\u540d\u9a8c\u8bc1<\/h3>\n<p>\u9664\u4e86\u4fe1\u4efb\u9a8c\u8bc1\u548c\u5728ssl\/tls\u534f\u8bae\u5c42\u4e0a\u8fdb\u884c\u5ba2\u6237\u7aef\u8ba4\u8bc1\uff0cHttpClient\u4e00\u65e6\u5efa\u7acb\u8d77\u8fde\u63a5\uff0c\u5c31\u53ef\u4ee5\u9009\u62e9\u6027\u9a8c\u8bc1\u76ee\u6807\u57df\u540d\u548c\u5b58\u50a8\u5728X.509\u8bc1\u4e66\u4e2d\u7684\u57df\u540d\u662f\u5426\u4e00\u81f4\u3002\u8fd9\u79cd\u9a8c\u8bc1\u53ef\u4ee5\u4e3a\u670d\u52a1\u5668\u4fe1\u4efb\u63d0\u4f9b\u989d\u5916\u7684\u4fdd\u969c\u3002<code>X509HostnameVerifier<\/code>\u63a5\u53e3\u4ee3\u8868\u4e3b\u673a\u540d\u9a8c\u8bc1\u7684\u7b56\u7565\u3002\u5728HttpClient\u4e2d\uff0c<code>X509HostnameVerifier<\/code>\u6709\u4e09\u4e2a\u5b9e\u73b0\u7c7b\u3002\u91cd\u8981\u63d0\u793a\uff1a\u4e3b\u673a\u540d\u6709\u6548\u6027\u9a8c\u8bc1\u4e0d\u5e94\u8be5\u548cssl\u4fe1\u4efb\u9a8c\u8bc1\u6df7\u4e3a\u4e00\u8c08\u3002<\/p>\n<ul>\n<li><strong><code>StrictHostnameVerifier<\/code>:<\/strong> \u4e25\u683c\u7684\u4e3b\u673a\u540d\u9a8c\u8bc1\u65b9\u6cd5\u548cjava 1.4,1.5,1.6\u9a8c\u8bc1\u65b9\u6cd5\u76f8\u540c\u3002\u548cIE6\u7684\u65b9\u5f0f\u4e5f\u5927\u81f4\u76f8\u540c\u3002\u8fd9\u79cd\u9a8c\u8bc1\u65b9\u5f0f\u7b26\u5408RFC 2818\u901a\u914d\u7b26\u3002The hostname must match either the first CN, or any of the subject-alts. A wildcard can occur in the CN, and in any of the subject-alts.<\/li>\n<li><strong><code>BrowserCompatHostnameVerifier<\/code>:<\/strong> \u8fd9\u79cd\u9a8c\u8bc1\u4e3b\u673a\u540d\u7684\u65b9\u6cd5\uff0c\u548cCurl\u53cafirefox\u4e00\u81f4\u3002The hostname must match either the first CN, or any of the subject-alts. A wildcard can occur in the CN, and in any of the subject-alts.<code>StrictHostnameVerifier<\/code>\u548c<code>BrowserCompatHostnameVerifier<\/code>\u65b9\u5f0f\u552f\u4e00\u4e0d\u540c\u7684\u5730\u65b9\u5c31\u662f\uff0c\u5e26\u6709\u901a\u914d\u7b26\u7684\u57df\u540d\uff08\u6bd4\u5982*.yeetrack.com),<code>BrowserCompatHostnameVerifier<\/code>\u65b9\u5f0f\u5728\u5339\u914d\u65f6\u4f1a\u5339\u914d\u6240\u6709\u7684\u7684\u5b50\u57df\u540d\uff0c\u5305\u62ec a.b.yeetrack.com .<\/li>\n<li><strong><code>AllowAllHostnameVerifier<\/code>:<\/strong> \u8fd9\u79cd\u65b9\u5f0f\u4e0d\u5bf9\u4e3b\u673a\u540d\u8fdb\u884c\u9a8c\u8bc1\uff0c\u9a8c\u8bc1\u529f\u80fd\u88ab\u5173\u95ed\uff0c\u662f\u4e2a\u7a7a\u64cd\u4f5c\uff0c\u6240\u4ee5\u5b83\u4e0d\u4f1a\u629b\u51fa<code>javax.net.ssl.SSLException<\/code>\u5f02\u5e38\u3002HttpClient\u9ed8\u8ba4\u4f7f\u7528<code>BrowserCompatHostnameVerifier<\/code>\u7684\u9a8c\u8bc1\u65b9\u5f0f\u3002\u5982\u679c\u9700\u8981\uff0c\u6211\u4eec\u53ef\u4ee5\u624b\u52a8\u6267\u884c\u9a8c\u8bc1\u65b9\u5f0f\u3002\n<pre><code>SSLContext sslContext = SSLContexts.createSystemDefault();\nSSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(\n        sslContext,\n        SSLConnectionSocketFactory.STRICT_HOSTNAME_VERIFIER);\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<p><a name=\"HttpClient-proxy-configuration\"><\/a><\/p>\n<h2>2.8.HttpClient\u4ee3\u7406\u670d\u52a1\u5668\u914d\u7f6e<\/h2>\n<p>\u5c3d\u7ba1\uff0cHttpClient\u652f\u6301\u590d\u6742\u7684\u8def\u7531\u65b9\u6848\u548c\u4ee3\u7406\u94fe\uff0c\u5b83\u540c\u6837\u4e5f\u652f\u6301\u76f4\u63a5\u8fde\u63a5\u6216\u8005\u53ea\u901a\u8fc7\u4e00\u8df3\u7684\u8fde\u63a5\u3002<\/p>\n<p>\u4f7f\u7528\u4ee3\u7406\u670d\u52a1\u5668\u6700\u7b80\u5355\u7684\u65b9\u5f0f\u5c31\u662f\uff0c\u6307\u5b9a\u4e00\u4e2a\u9ed8\u8ba4\u7684proxy\u53c2\u6570\u3002<\/p>\n<pre><code>    HttpHost proxy = new HttpHost(\"someproxy\", 8080);\n    DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);\n    CloseableHttpClient httpclient = HttpClients.custom()\n            .setRoutePlanner(routePlanner)\n            .build();\n<\/code><\/pre>\n<p>\u6211\u4eec\u4e5f\u53ef\u4ee5\u8ba9HttpClient\u53bb\u4f7f\u7528jre\u7684\u4ee3\u7406\u670d\u52a1\u5668\u3002<\/p>\n<pre><code>    SystemDefaultRoutePlanner routePlanner = new SystemDefaultRoutePlanner(\n        ProxySelector.getDefault());\n    CloseableHttpClient httpclient = HttpClients.custom()\n            .setRoutePlanner(routePlanner)\n            .build();\n<\/code><\/pre>\n<p>\u53c8\u6216\u8005\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u624b\u52a8\u914d\u7f6e<code>RoutePlanner<\/code>\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5b8c\u5168\u63a7\u5236Http\u8def\u7531\u7684\u8fc7\u7a0b\u3002<\/p>\n<pre><code>    HttpRoutePlanner routePlanner = new HttpRoutePlanner() {\n\n        public HttpRoute determineRoute(\n                HttpHost target,\n                HttpRequest request,\n                HttpContext context) throws HttpException {\n            return new HttpRoute(target, null,  new HttpHost(\"someproxy\", 8080),\n                    \"https\".equalsIgnoreCase(target.getSchemeName()));\n        }\n\n    };\n    CloseableHttpClient httpclient = HttpClients.custom()\n            .setRoutePlanner(routePlanner)\n            .build();\n        }\n    }\n<\/code><\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>2.1.\u6301\u4e45\u8fde\u63a5 \u4e24\u4e2a\u4e3b\u673a\u5efa\u7acb\u8fde\u63a5\u7684\u8fc7\u7a0b\u662f\u5f88\u590d\u6742\u7684\u4e00\u4e2a\u8fc7\u7a0b\uff0c\u6d89\u53ca\u5230\u591a\u4e2a\u6570\u636e\u5305\u7684\u4ea4\u6362\uff0c\u5e76\u4e14\u4e5f\u5f88\u8017\u65f6\u95f4\u3002Http\u8fde\u63a5\u9700\u8981\u7684\u4e09\u6b21\u63e1\u624b\u5f00\u9500\u5f88\u5927\uff0c\u8fd9\u4e00\u5f00\u9500\u5bf9\u4e8e\u6bd4\u8f83\u5c0f\u7684http\u6d88\u606f\u6765\u8bf4\u66f4\u5927\u3002\u4f46\u662f\u5982\u679c\u6211\u4eec\u76f4\u63a5\u4f7f\u7528\u5df2&#46;&#46;&#46;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[33],"tags":[8,7,5,42,13,41],"class_list":["post-782","post","type-post","status-publish","format-standard","hentry","category-coding","tag-java","tag-7","tag-5","tag-42","tag-13","tag-41"],"views":49641,"_links":{"self":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=782"}],"version-history":[{"count":1,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/782\/revisions"}],"predecessor-version":[{"id":783,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=\/wp\/v2\/posts\/782\/revisions\/783"}],"wp:attachment":[{"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yeetrack.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}