📋 複製

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@Configuration

public class RestClientConfig {



    @Bean

    public RestTemplate restTemplate() throws Exception {

        // 1. SSL 配置 (針對內網自簽憑證環境)

        SSLContext sslContext = SSLContextBuilder.create()

                .loadTrustMaterial(null, (chain, authType) -> true)

                .build();



        // 2. 建立 SSL 連線工廠，忽略 Hostname 驗證

        SSLConnectionSocketFactory sslsf = SSLConnectionSocketFactoryBuilder.create()

                .setSslContext(sslContext)

                .setHostnameVerifier(NoopHostnameVerifier.INSTANCE)

                .build();



        // 3. 註冊 HTTP 與 HTTPS 處理方式 (建立連線池管理器)

        PoolingHttpClientConnectionManager connectionManager = PoolingHttpClientConnectionManagerBuilder.create()

                .setSSLSocketFactory(sslsf)

                .setMaxConnTotal(500)       // 總連線上限

                .setMaxConnPerRoute(50)     // 單一伺服器(Route)上限，避免單一 Server 出事拖垮 JBoss

                .build();



        // 4. 建立 HttpClient 並設定閒置清理

        CloseableHttpClient httpClient = HttpClients.custom()

                .setConnectionManager(connectionManager)

                .evictIdleConnections(TimeValue.ofSeconds(30)) // 30秒清理一次閒置連線，釋放 JBoss 埠號

                .build();



        // 5. 將 HttpClient 封裝進 RestTemplate

        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(httpClient);

        factory.setConnectTimeout(5000); // 建立連線逾時

        factory.setReadTimeout(10000);   // 資料傳輸逾時



        return new RestTemplate(factory);

    }

}

📋 複製

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