Spring Boot 405 Method Not Allowed Error: 'GET' Request Not Supported - Troubleshooting Guide

This\u0020error\u0020occurs\u0020when\u0020a\u0020request\u0020method\u0020(GET)\u0020is\u0020not\u0020supported\u0020by\u0020the\u0020web\u0020application.\u0020The\u0020application\u0020is\u0020using\u0020the\u0020Spring\u0020Framework\u0020and\u0020the\u0020error\u0020is\u0020thrown\u0020by\u0020the\u0020RequestMappingInfoHandlerMapping\u0020class.\n\nTo\u0020fix\u0020this\u0020error,\u0020you\u0020can\u0020do\u0020the\u0020following:\n\n1.\u0020Make\u0020sure\u0020that\u0020the\u0020correct\u0020request\u0020method\u0020is\u0020used.\u0020If\u0020you\u0020are\u0020trying\u0020to\u0020make\u0020a\u0020GET\u0020request,\u0020ensure\u0020that\u0020the\u0020URL\u0020and\u0020request\u0020method\u0020are\u0020correct.\n\n2.\u0020Check\u0020if\u0020the\u0020controller\u0020method\u0020that\u0020handles\u0020the\u0020request\u0020has\u0020the\u0020correct\u0020request\u0020mapping\u0020annotation.\u0020The\u0020method\u0020should\u0020be\u0020annotated\u0020with\u0020@GetMapping\u0020or\u0020@RequestMapping(value\u0020=\u0020"/path",\u0020method\u0020=\u0020RequestMethod.GET)\u0020to\u0020handle\u0020GET\u0020requests.\n\n3.\u0020If\u0020you\u0020are\u0020using\u0020Spring\u0020Security,\u0020make\u0020sure\u0020that\u0020the\u0020request\u0020is\u0020not\u0020being\u0020blocked\u0020by\u0020any\u0020security\u0020rules.\u0020Check\u0020the\u0020security\u0020configuration\u0020and\u0020ensure\u0020that\u0020the\u0020request\u0020is\u0020allowed.\n\n4.\u0020If\u0020you\u0020are\u0020using\u0020a\u0020custom\u0020filter\u0020or\u0020interceptor,\u0020make\u0020sure\u0020that\u0020it\u0020is\u0020not\u0020blocking\u0020the\u0020request.\u0020Check\u0020the\u0020filter\u0020or\u0020interceptor\u0020configuration\u0020and\u0020ensure\u0020that\u0020it\u0020allows\u0020the\u0020GET\u0020request.\n\n5.\u0020If\u0020none\u0020of\u0020the\u0020above\u0020solutions\u0020work,\u0020check\u0020the\u0020application\u0020logs\u0020for\u0020any\u0020other\u0020error\u0020messages\u0020that\u0020may\u0020provide\u0020more\u0020information\u0020about\u0020the\u0020cause\u0020of\u0020the\u0020error.\n\nBy\u0020following\u0020these\u0020steps,\u0020you\u0020should\u0020be\u0020able\u0020to\u0020resolve\u0020the\u0020"Request\u0020method\u0020'GET'\u0020not\u0020supported"\u0020error.