{"id":12977,"date":"2024-03-15T01:43:25","date_gmt":"2024-03-15T01:43:25","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-set-parameters-in-httpurlconnection-in-java\/"},"modified":"2025-08-05T09:35:00","modified_gmt":"2025-08-05T09:35:00","slug":"how-to-set-parameters-in-httpurlconnection-in-java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-set-parameters-in-httpurlconnection-in-java\/","title":{"rendered":"Java HttpURLConnection Parameter Setup"},"content":{"rendered":"<p>In Java, you can use the HttpURLConnection class to establish an HTTP connection and send a request. You can customize your request by setting parameters such as the request method, request headers, request body, etc.<\/p>\n<p>Here is an example of setting parameters.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.io.BufferedReader;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.InputStreamReader;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.OutputStream;\r\n<span class=\"hljs-keyword\">import<\/span> java.net.HttpURLConnection;\r\n<span class=\"hljs-keyword\">import<\/span> java.net.URL;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">HttpURLConnectionExample<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        <span class=\"hljs-keyword\">try<\/span> {\r\n            <span class=\"hljs-comment\">\/\/ \u521b\u5efaURL\u5bf9\u8c61<\/span>\r\n            <span class=\"hljs-type\">URL<\/span> <span class=\"hljs-variable\">url<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">URL<\/span>(<span class=\"hljs-string\">\"https:\/\/www.example.com\"<\/span>);\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u6253\u5f00\u8fde\u63a5<\/span>\r\n            <span class=\"hljs-type\">HttpURLConnection<\/span> <span class=\"hljs-variable\">connection<\/span> <span class=\"hljs-operator\">=<\/span> (HttpURLConnection) url.openConnection();\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u8bf7\u6c42\u65b9\u6cd5<\/span>\r\n            connection.setRequestMethod(<span class=\"hljs-string\">\"GET\"<\/span>);\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u8bf7\u6c42\u5934<\/span>\r\n            connection.setRequestProperty(<span class=\"hljs-string\">\"Content-Type\"<\/span>, <span class=\"hljs-string\">\"application\/json\"<\/span>);\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u8bf7\u6c42\u4f53\uff08\u5982\u679c\u9700\u8981\uff09<\/span>\r\n            <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">requestBody<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"{\\\"key\\\": \\\"value\\\"}\"<\/span>;\r\n            connection.setDoOutput(<span class=\"hljs-literal\">true<\/span>);\r\n            <span class=\"hljs-type\">OutputStream<\/span> <span class=\"hljs-variable\">outputStream<\/span> <span class=\"hljs-operator\">=<\/span> connection.getOutputStream();\r\n            outputStream.write(requestBody.getBytes());\r\n            outputStream.flush();\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u54cd\u5e94\u7ed3\u679c<\/span>\r\n            <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">responseCode<\/span> <span class=\"hljs-operator\">=<\/span> connection.getResponseCode();\r\n            <span class=\"hljs-type\">BufferedReader<\/span> <span class=\"hljs-variable\">reader<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">BufferedReader<\/span>(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">InputStreamReader<\/span>(connection.getInputStream()));\r\n            String line;\r\n            <span class=\"hljs-type\">StringBuilder<\/span> <span class=\"hljs-variable\">response<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">StringBuilder<\/span>();\r\n            <span class=\"hljs-keyword\">while<\/span> ((line = reader.readLine()) != <span class=\"hljs-literal\">null<\/span>) {\r\n                response.append(line);\r\n            }\r\n            reader.close();\r\n\r\n            <span class=\"hljs-comment\">\/\/ \u8f93\u51fa\u7ed3\u679c<\/span>\r\n            System.out.println(<span class=\"hljs-string\">\"Response Code: \"<\/span> + responseCode);\r\n            System.out.println(<span class=\"hljs-string\">\"Response Body: \"<\/span> + response.toString());\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u5173\u95ed\u8fde\u63a5<\/span>\r\n            connection.disconnect();\r\n        } <span class=\"hljs-keyword\">catch<\/span> (Exception e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>In the example above, we first create a URL object and then use that URL object to open an HttpURLConnection connection. Next, we set the request method to &#8220;GET&#8221; and set the request header &#8220;Content-Type&#8221; to &#8220;application\/json&#8221;. If needed, we can set the request body and then write it to the connection&#8217;s output stream.<\/p>\n<p>Next, we can get the response code by calling the getResponseCode() method and obtain the response body by reading the connection&#8217;s input stream. Finally, we output the response code and response body, and close the connection.<\/p>\n<p>Please note that this example is for demonstration purposes only, you may need to handle errors and exceptions in actual situations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Java, you can use the HttpURLConnection class to establish an HTTP connection and send a request. You can customize your request by setting parameters such as the request method, request headers, request body, etc. Here is an example of setting parameters. import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; public class HttpURLConnectionExample [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[17113,17115,16461,17085,1859],"class_list":["post-12977","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-http-parameters","tag-http-request-setup","tag-java-http-tutorial","tag-java-httpurlconnection","tag-java-networking"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java HttpURLConnection Parameter Setup - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to set request method, headers, and body in Java HttpURLConnection. 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