{"id":12960,"date":"2024-03-15T01:41:55","date_gmt":"2024-03-15T01:41:55","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-use-httpurlconnection-in-java\/"},"modified":"2025-08-05T09:18:56","modified_gmt":"2025-08-05T09:18:56","slug":"how-to-use-httpurlconnection-in-java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-use-httpurlconnection-in-java\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Java HttpURLConnection"},"content":{"rendered":"

The steps to send an HTTP request in Java using HttpURLConnection are as follows:<\/p>\n

    \n
  1. Create a URL object and specify the URL address you want to request.<\/li>\n
  2. establish a connection<\/li>\n
  3. Convert the URLConnection object to an HttpURLConnection object because it is a subclass of URLConnection.<\/li>\n
  4. use the setRequestMethod() method<\/li>\n
  5. specify a property for the request<\/li>\n
  6. enableInput()<\/li>\n
  7. Enable output streaming.<\/li>\n
  8. establish a connection<\/li>\n
  9. If there is a need to send a request body, you can achieve this by obtaining the output stream and writing the request body data.<\/li>\n
  10. obtain the response code<\/li>\n
  11. If the response status code is 200, it means the request was successful and you can access the response data.<\/li>\n
  12. retrieve the input stream<\/li>\n
  13. BufferedReader is a class used for reading text from a character-input stream in Java.<\/li>\n
  14. unplug()<\/li>\n<\/ol>\n

    Here is a simple example code:<\/p>\n

    import<\/span> java.io.BufferedReader;\r\nimport<\/span> java.io.InputStreamReader;\r\nimport<\/span> java.net.HttpURLConnection;\r\nimport<\/span> java.net.URL;\r\n\r\npublic<\/span> class<\/span> HttpURLConnectionExample<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        try<\/span> {\r\n            \/\/ \u521b\u5efaURL\u5bf9\u8c61<\/span>\r\n            URL<\/span> url<\/span> =<\/span> new<\/span> URL<\/span>(\"http:\/\/example.com\"<\/span>);\r\n            \r\n            \/\/ \u6253\u5f00URL\u8fde\u63a5<\/span>\r\n            HttpURLConnection<\/span> connection<\/span> =<\/span> (HttpURLConnection) url.openConnection();\r\n            \r\n            \/\/ \u8bbe\u7f6e\u8bf7\u6c42\u65b9\u6cd5<\/span>\r\n            connection.setRequestMethod(\"GET\"<\/span>);\r\n            \r\n            \/\/ \u8bbe\u7f6e\u8bf7\u6c42\u5934\u4fe1\u606f<\/span>\r\n            connection.setRequestProperty(\"User-Agent\"<\/span>, \"Mozilla\/5.0\"<\/span>);\r\n            \r\n            \/\/ \u53d1\u9001\u8bf7\u6c42<\/span>\r\n            connection.connect();\r\n            \r\n            \/\/ \u83b7\u53d6\u54cd\u5e94\u72b6\u6001\u7801<\/span>\r\n            int<\/span> statusCode<\/span> =<\/span> connection.getResponseCode();\r\n            \r\n            \/\/ \u5224\u65ad\u662f\u5426\u8bf7\u6c42\u6210\u529f<\/span>\r\n            if<\/span> (statusCode == HttpURLConnection.HTTP_OK) {\r\n                \/\/ \u83b7\u53d6\u54cd\u5e94\u8f93\u5165\u6d41<\/span>\r\n                BufferedReader<\/span> reader<\/span> =<\/span> new<\/span> BufferedReader<\/span>(new<\/span> InputStreamReader<\/span>(connection.getInputStream()));\r\n                \r\n                \/\/ \u8bfb\u53d6\u54cd\u5e94\u6570\u636e<\/span>\r\n                String line;\r\n                StringBuilder<\/span> response<\/span> =<\/span> new<\/span> StringBuilder<\/span>();\r\n                while<\/span> ((line = reader.readLine()) != null<\/span>) {\r\n                    response.append(line);\r\n                }\r\n                reader.close();\r\n                \r\n                \/\/ \u8f93\u51fa\u54cd\u5e94\u6570\u636e<\/span>\r\n                System.out.println(response.toString());\r\n            } else<\/span> {\r\n                System.out.println(\"\u8bf7\u6c42\u5931\u8d25\uff0c\u72b6\u6001\u7801\uff1a\"<\/span> + statusCode);\r\n            }\r\n            \r\n            \/\/ \u5173\u95ed\u8fde\u63a5<\/span>\r\n            connection.disconnect();\r\n        } catch<\/span> (Exception e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n
    Please note that the URL address in the example above is for demonstration purposes only, and needs to be replaced with the actual URL address when used.<\/p>\n","protected":false},"excerpt":{"rendered":"
    The steps to send an HTTP request in Java using HttpURLConnection are as follows: Create a URL object and specify the URL address you want to request. establish a connection Convert the URLConnection object to an HttpURLConnection object because it is a subclass of URLConnection. use the setRequestMethod() method specify a property for the request […]<\/p>\n","protected":false},"author":6,"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":[17086,17085,17089,17087,17088],"class_list":["post-12960","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-http","tag-java-httpurlconnection","tag-java-http","tag-java","tag-url"],"yoast_head":"\n\u5982\u4f55\u4f7f\u7528Java HttpURLConnection - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5b66\u4e60\u5982\u4f55\u4f7f\u7528Java HttpURLConnection\u53d1\u9001HTTP\u8bf7\u6c42\u3002\u8be6\u89e3\u5efa\u7acb\u8fde\u63a5\u3001\u8bbe\u7f6e\u65b9\u6cd5\u53c2\u6570\u548c\u5904\u7406\u54cd\u5e94\u7684\u5b8c\u6574\u6b65\u9aa4\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-use-httpurlconnection-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5982\u4f55\u4f7f\u7528Java HttpURLConnection\" \/>\n<meta property=\"og:description\" content=\"\u5b66\u4e60\u5982\u4f55\u4f7f\u7528Java HttpURLConnection\u53d1\u9001HTTP\u8bf7\u6c42\u3002\u8be6\u89e3\u5efa\u7acb\u8fde\u63a5\u3001\u8bbe\u7f6e\u65b9\u6cd5\u53c2\u6570\u548c\u5904\u7406\u54cd\u5e94\u7684\u5b8c\u6574\u6b65\u9aa4\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-use-httpurlconnection-in-java\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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