{"id":262440,"date":"2024-05-15T14:34:37","date_gmt":"2024-05-15T06:34:37","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/262440.html"},"modified":"2024-05-15T14:34:43","modified_gmt":"2024-05-15T06:34:43","slug":"java-%e6%80%8e%e4%b9%88%e8%b0%83%e7%94%a8%e4%ba%91%e7%ab%af%e4%bb%a3%e7%a0%81","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/262440.html","title":{"rendered":"java \u600e\u4e48\u8c03\u7528\u4e91\u7aef\u4ee3\u7801"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27122304\/0fe994b6-d57c-41d9-8b6b-5d7698b58f06.webp\" alt=\"java \u600e\u4e48\u8c03\u7528\u4e91\u7aef\u4ee3\u7801\" \/><\/p>\n<p><p>Java\u8c03\u7528\u4e91\u7aef\u4ee3\u7801\u901a\u5e38\u6d89\u53ca\u4f7f\u7528HTTP\u5ba2\u6237\u7aef\u5e93\u8fdb\u884cAPI\u8bf7\u6c42\u3001\u5904\u7406\u4e91\u51fd\u6570\u6216\u8005\u4e0e\u4e91\u670d\u52a1SDK\u4ea4\u4e91\u3002<strong>\u4e3b\u8981\u7684\u5b9e\u73b0\u65b9\u5f0f\u5305\u62ec\u4f7f\u7528\u6807\u51c6\u7684HTTP\u8bf7\u6c42\u3001\u96c6\u6210\u76f8\u5173\u7684\u4e91\u670d\u52a1SDK\u3001\u4ee5\u53ca\u6784\u5efaWebSocket\u8fde\u63a5<\/strong>\u3002\u4ee5HTTP\u8bf7\u6c42\u4e3a\u4f8b\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u4f7f\u7528\u50cfApache HttpClient\u3001OkHttp\u7b49\u5e93\u6765\u5411\u4e91\u670d\u52a1\u53d1\u9001HTTP\u8bf7\u6c42\uff0c\u5e76\u5904\u7406\u54cd\u5e94\u3002<\/p>\n<\/p>\n<p><p>\u5728\u8c03\u7528\u4e91\u7aef\u4ee3\u7801\u65f6\uff0c\u5f00\u53d1\u8005\u9996\u5148\u9700\u8981\u4e86\u89e3\u6240\u4f7f\u7528\u4e91\u670d\u52a1\u7684API\u6587\u6863\uff0c\u8fd9\u5305\u62ec\u4e86API\u7684\u8bf7\u6c42\u5730\u5740\u3001\u8bf7\u6c42\u65b9\u5f0f\uff08\u5982GET\u3001POST\uff09\u3001\u6240\u9700\u7684\u8bf7\u6c42\u53c2\u6570\u548c\u8fd4\u56de\u7684\u6570\u636e\u683c\u5f0f\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4e91\u670d\u52a1\u4f1a\u63d0\u4f9bREST API\u4f9b\u5f00\u53d1\u8005\u4f7f\u7528\u3002\u5f00\u53d1\u8005\u8fd8\u9700\u6ce8\u610f\u8bf7\u6c42\u7684\u8eab\u4efd\u9a8c\u8bc1\uff0c\u8fd9\u901a\u5e38\u6d89\u53ca\u5230\u6dfb\u52a0\u7279\u5b9a\u7684\u8ba4\u8bc1\u5934\uff08\u5982OAuth2.0\u4ee4\u724c\uff09\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528HTTP\u5ba2\u6237\u7aef\u5e93<\/h3>\n<\/p>\n<p><p>Java\u4e2d\u53ef\u4ee5\u4f7f\u7528\u591a\u79cdHTTP\u5ba2\u6237\u7aef\u5e93\u6765\u53d1\u9001\u8bf7\u6c42\uff0c\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u5e93\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><p><strong>Apache HttpClient<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">CloseableHttpClient httpClient = HttpClients.createDefault();<\/p>\n<p>HttpGet getRequest = new HttpGet(&quot;https:\/\/your-cloud-service\/api\/endpoint&quot;);<\/p>\n<p>getRequest.addHeader(&quot;accept&quot;, &quot;application\/json&quot;);<\/p>\n<p>CloseableHttpResponse response = httpClient.execute(getRequest);<\/p>\n<p>try {<\/p>\n<p>    \/\/ \u5904\u7406\u8fd4\u56de\u7684\u72b6\u6001\u7801\u548c\u54cd\u5e94<\/p>\n<p>    int statusCode = response.getStatusLine().getStatusCode();<\/p>\n<p>    HttpEntity entity = response.getEntity();<\/p>\n<p>    if (entity != null) {<\/p>\n<p>        String responseString = EntityUtils.toString(entity, &quot;UTF-8&quot;);<\/p>\n<p>        \/\/ \u89e3\u6790\u4e91\u7aef\u4ee3\u7801\u8fd4\u56de\u7684\u6570\u636e<\/p>\n<p>    }<\/p>\n<p>} finally {<\/p>\n<p>    response.close();<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>OkHttp<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">OkHttpClient client = new OkHttpClient();<\/p>\n<p>Request request = new Request.Builder()<\/p>\n<p>        .url(&quot;https:\/\/your-cloud-service\/api\/endpoint&quot;)<\/p>\n<p>        .header(&quot;Accept&quot;, &quot;application\/json&quot;)<\/p>\n<p>        .build();<\/p>\n<p>try (Response response = client.newCall(request).execute()) {<\/p>\n<p>    \/\/ \u5904\u7406\u8fd4\u56de\u7684\u6570\u636e<\/p>\n<p>    if (response.isSuccessful()) {<\/p>\n<p>        String responseString = response.body().string();<\/p>\n<p>        \/\/ \u89e3\u6790\u4e91\u7aef\u4ee3\u7801\u8fd4\u56de\u7684\u6570\u636e<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e8c\u3001\u96c6\u6210\u4e91\u670d\u52a1SDK<\/h3>\n<\/p>\n<p><p>\u5982\u679c\u4e91\u670d\u52a1\u63d0\u4f9b\u4e86Java\u7248\u672c\u7684SDK\uff0c\u53ef\u4ee5\u76f4\u63a5\u96c6\u6210SDK\u4ee5\u7b80\u5316API\u8c03\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><p><strong>AWS Java SDK<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">\/\/ \u521b\u5efaAWS\u670d\u52a1\u5ba2\u6237\u7aef\uff0c\u8fd9\u91cc\u4ee5S3\u4e3a\u4f8b<\/p>\n<p>AmazonS3 s3Client = AmazonS3ClientBuilder.standard()<\/p>\n<p>        .withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(&quot;YOUR_ACCESS_KEY&quot;, &quot;YOUR_SECRET_KEY&quot;)))<\/p>\n<p>        .withRegion(Regions.US_EAST_1)<\/p>\n<p>        .build();<\/p>\n<p>\/\/ \u8c03\u7528\u4e91\u7aef\u65b9\u6cd5\uff0c\u6bd4\u5982\u5217\u51fa\u5b58\u50a8\u6876<\/p>\n<p>List&lt;Bucket&gt; buckets = s3Client.listBuckets();<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5bf9\u4e8e\u5176\u4ed6\u4e91\u670d\u52a1\uff0c\u5982Azure\u3001Google Cloud\u7b49\uff0c\u5f00\u53d1\u8005\u9700\u8981\u67e5\u9605\u5bf9\u5e94\u7684SDK\u6587\u6863\u548c\u6307\u5357\uff0c\u7136\u540e\u6309\u7167\u5b83\u4eec\u7684\u65b9\u5f0f\u8fdb\u884c\u96c6\u6210\u548c\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u6784\u5efaWebSocket\u8fde\u63a5<\/h3>\n<\/p>\n<p><p>\u5bf9\u4e8e\u9700\u8981\u5b9e\u65f6\u6570\u636e\u4ea4\u6362\u7684\u573a\u666f\uff0c\u53ef\u80fd\u9700\u8981\u4f7f\u7528WebSocket\u534f\u8bae\u4e0e\u4e91\u7aef\u4ee3\u7801\u901a\u8baf\u3002Java\u53ef\u4ee5\u4f7f\u7528Java WebSocket API\u6216\u8005\u5176\u4ed6\u5e93\u5982Socket.IO\u5ba2\u6237\u7aef\u6765\u5b9e\u73b0\uff1a<\/p>\n<\/p>\n<p><p><strong>Java WebSocket API<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">\/\/ \u5b9a\u4e49\u4e00\u4e2aEndPoint\u7c7b<\/p>\n<p>@ClientEndpoint<\/p>\n<p>public class MyClientEndpoint {<\/p>\n<p>    @OnOpen<\/p>\n<p>    public void onOpen(Session session) {<\/p>\n<p>        System.out.println(&quot;Connected to server&quot;);<\/p>\n<p>    }<\/p>\n<p>    @OnMessage<\/p>\n<p>    public void onMessage(String message) {<\/p>\n<p>        System.out.println(&quot;Received message: &quot; + message);<\/p>\n<p>    }<\/p>\n<p>    @OnClose<\/p>\n<p>    public void onClose(Session session) {<\/p>\n<p>        System.out.println(&quot;Session closed&quot;);<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>\/\/ \u8fde\u63a5\u5230WebSocket\u670d\u52a1<\/p>\n<p>String uri = &quot;ws:\/\/your-cloud-service\/websocket\/endpoint&quot;;<\/p>\n<p>WebSocketCont<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>ner container = ContainerProvider.getWebSocketContainer();<\/p>\n<p>container.connectToServer(MyClientEndpoint.class, URI.create(uri));<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001\u5904\u7406\u4e91\u7aef\u4ee3\u7801\u8fd4\u56de\u7684\u6570\u636e<\/h3>\n<\/p>\n<p><p>\u65e0\u8bba\u662f\u901a\u8fc7HTTP\u8bf7\u6c42\u3001SDK\u8c03\u7528\u8fd8\u662fWebSocket\u901a\u4fe1\u83b7\u53d6\u5230\u4e91\u7aef\u4ee3\u7801\u7684\u8fd4\u56de\u6570\u636e\uff0c\u901a\u5e38\u9700\u8981\u8fdb\u884c\u9002\u5f53\u7684\u5904\u7406\u548c\u89e3\u6790\u624d\u80fd\u5728Java\u5e94\u7528\u4e2d\u4f7f\u7528\u3002\u8fd9\u53ef\u80fd\u9700\u8981\uff1a<\/p>\n<\/p>\n<p><p><strong>\u89e3\u6790JSON\u6216XML\u54cd\u5e94<\/strong>\uff1a<\/p>\n<\/p>\n<p><p>JSON\u5904\u7406\u53ef\u4ee5\u4f7f\u7528\u5e93\u5982Jackson\u6216Gson\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">\/\/ Gson \u793a\u4f8b<\/p>\n<p>Gson gson = new Gson();<\/p>\n<p>MyResponseObject responseObject = gson.fromJson(responseString, MyResponseObject.class);<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>XML\u5904\u7406\u53ef\u4ee5\u4f7f\u7528\u5e93\u5982JAXB\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">\/\/ JAXB \u793a\u4f8b<\/p>\n<p>JAXBContext jaxbContext = JAXBContext.newInstance(MyResponseObject.class);<\/p>\n<p>Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();<\/p>\n<p>MyResponseObject responseObject = (MyResponseObject) unmarshaller.unmarshal(new StringReader(responseString));<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u9519\u8bef\u5904\u7406<\/strong>\uff1a<\/p>\n<\/p>\n<p><p>\u9700\u8981\u5bf9\u54cd\u5e94\u72b6\u6001\u7801\u8fdb\u884c\u68c0\u67e5\uff0c\u5e76\u5904\u7406\u53ef\u80fd\u7684\u9519\u8bef\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">if (statusCode &gt;= 200 &amp;&amp; statusCode &lt; 300) {<\/p>\n<p>    \/\/ \u8bf7\u6c42\u6210\u529f\u5904\u7406<\/p>\n<p>} else {<\/p>\n<p>    \/\/ \u8bf7\u6c42\u5931\u8d25\u5904\u7406<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u5904\u7406\u5b8c\u8bf7\u6c42\u6216\u54cd\u5e94\u4e4b\u540e\uff0c\u4e0d\u8981\u5fd8\u8bb0\u91ca\u653e\u8d44\u6e90\uff0c\u4f8b\u5982\u5173\u95edHTTP\u8fde\u63a5\u6216WebSocket\u4f1a\u8bdd\uff0c\u4ee5\u9632\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5982\u4f55\u5728Java\u4e2d\u8c03\u7528\u4e91\u7aef\u4ee3\u7801\uff1f<\/strong><\/p>\n<p>\u8c03\u7528\u4e91\u7aef\u4ee3\u7801\u662f\u901a\u8fc7\u4f7f\u7528\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u7684\u8f6f\u4ef6\u5f00\u53d1\u5de5\u5177\u5305\uff08SDK\uff09\u6765\u5b9e\u73b0\u7684\u3002\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u901a\u5e38\u4f1a\u63d0\u4f9b\u9002\u7528\u4e8eJava\u7684SDK\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u5bfc\u5165\u5e76\u4f7f\u7528\u8be5SDK\u6765\u8c03\u7528\u4e91\u7aef\u4ee3\u7801\u3002<\/p>\n<p>\u9996\u5148\uff0c\u4f60\u9700\u8981\u4ece\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u7684\u5b98\u65b9\u7f51\u7ad9\u83b7\u53d6\u9002\u7528\u4e8eJava\u7684SDK\uff0c\u53ef\u4ee5\u662fAmazon Web Services\uff08AWS\uff09\u3001Microsoft Azure\u6216\u8005Google Cloud Platform\u7b49\u3002\u7136\u540e\uff0c\u5c06\u8be5SDK\u5bfc\u5165\u5230\u4f60\u7684Java\u9879\u76ee\u4e2d\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u4f60\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u8fde\u63a5\u5230\u4e91\u670d\u52a1\u7684\u5ba2\u6237\u7aef\u5bf9\u8c61\u3002\u8fd9\u901a\u5e38\u9700\u8981\u63d0\u4f9b\u8bbf\u95ee\u5bc6\u94a5\u3001\u4ee4\u724c\u6216\u5176\u4ed6\u8eab\u4efd\u9a8c\u8bc1\u4fe1\u606f\uff0c\u4ee5\u4fbf\u4e0e\u4e91\u7aef\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n<p>\u4e00\u65e6\u5ba2\u6237\u7aef\u5bf9\u8c61\u521b\u5efa\u6210\u529f\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u76f8\u5173\u7684API\u8c03\u7528\u4e91\u7aef\u4ee3\u7801\u3002\u6839\u636e\u4f60\u60f3\u8981\u505a\u7684\u5177\u4f53\u64cd\u4f5c\uff08\u4f8b\u5982\u8c03\u7528\u4e91\u51fd\u6570\u3001\u53d1\u9001\u8bf7\u6c42\u6216\u5904\u7406\u4e91\u5b58\u50a8\u7b49\uff09\uff0c\u4f7f\u7528\u76f8\u5e94\u7684\u65b9\u6cd5\u5e76\u4f20\u9012\u5fc5\u8981\u7684\u53c2\u6570\u5373\u53ef\u3002<\/p>\n<p>\u6700\u540e\uff0c\u8bb0\u5f97\u5728\u8c03\u7528\u4e91\u7aef\u4ee3\u7801\u65f6\u8fdb\u884c\u9519\u8bef\u5904\u7406\uff0c\u786e\u4fdd\u4f60\u7684\u4ee3\u7801\u80fd\u591f\u6b63\u786e\u5904\u7406\u5f02\u5e38\u60c5\u51b5\u3002<\/p>\n<p><strong>2. 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