asp.net core Web API\u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067CORS (Cross Origin Resource Sharing) \u304c\u30c7\u30a3\u30bb\u30fc\u30d6\u30eb\u306b\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u5225\u30b5\u30a4\u30c8\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3057\u307e\u3046\u3002<\/p>\n\n\n\n
CORS\u3092\u6709\u52b9\u306b\u3059\u308b\u306b\u306f\u3001Startup.cs\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3001\u8a2d\u5b9a\u304c\u5fc5\u8981\u3068\u306a\u308b\u3002<\/p>\n\n\n\n
public IConfiguration Configuration { get; }\npublic Startup(IServiceConfiguration configuration) {\n Configuration = configuration;\n}\npublic void ConfigureServices(IServiceCollection services)\n{\n \/\/ CORS\u30dd\u30ea\u30b7\u30fc\u306e\u8ffd\u52a0\n services.AddCors(options =>\n {\n options.AddPolicy(\"AllowAllOriginsPolicy\", \/\/ \u540d\u524d\u306f\u4f55\u3067\u3082\u826f\u3044\n builder =>\n {\n \/\/ \u3053\u306e\u4f8b\u3067\u306f\u5168\u30db\u30b9\u30c8\u304b\u3089\u53d7\u4ed8\u3051\u53ef\u80fd(\u3069\u3046\u305b\u3001FW\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3057\u30fb\u30fb\u30fb)\n \/\/ \u30db\u30b9\u30c8\u3092\u5236\u9650\u3059\u308b\u306b\u306f\u3001.WithOrigins\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\n \/\/ \u30d8\u30c3\u30c0\u3092\u5236\u9650\u3059\u308b\u306b\u306f\u3001.WithHeaders\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\n \/\/ HTTP\u30e1\u30bd\u30c3\u30c9\u3092\u5236\u9650\u3059\u308b\u306b\u306f\u3001.WithMethods\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\n builder.AllowAnyOrigin();\n });\n });\n services.AddControllers();\n}\n<\/code><\/pre>\n\n\n\n\u2191\u306e\u4f8b\u3067\u306f\u3001\u5168\u3066\u306e\u30db\u30b9\u30c8\u304b\u3089\u306e\u63a5\u7d9a\u3092\u8a31\u53ef\u3057\u3066\u3044\u308b\u3002
\u7279\u5b9a\u306e\u30db\u30b9\u30c8\u3060\u3051\u8a31\u53ef\u3059\u308b\u306b\u306f\u3001.WithOrigins\u3092\u4f7f\u7528\u3059\u308b\u3002<\/p>\n\n\n\n
builder.WithOrigins(\"http:\/\/boo.foo.com\",\"http:\/\/www.boo.foo.com\");<\/code><\/pre>\n\n\n\n\u5f8c\u306f\u3001Configura\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u3001\u5168\u3066\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306b\u9069\u7528\u3059\u308b\u304b\u3001\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u6bce\u306b\u9069\u7528\u3059\u308b\u304b\u306b\u3088\u3063\u3066\u3001\u6307\u5b9a\u304c\u7570\u306a\u308b\u3002
\u5168\u3066\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306b\u9069\u7528\u3059\u308b\u306b\u306f\u3001Configure\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u3001<\/p>\n\n\n\n
app.UseCors();<\/code><\/pre>\n\n\n\n\u3092\u547c\u3073\u51fa\u3059\u3002<\/p>\n\n\n\n
\u8a73\u3057\u304f\u306f\u3001<\/p>\n\n\n\n
https:\/\/docs.microsoft.com\/ja-jp\/aspnet\/core\/security\/cors?view=aspnetcore-3.1<\/a><\/p>\n\n\n\n\u3092\u53c2\u7167\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
asp.net core Web API\u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067CORS (Cross … \u7d9a\u304d\u3092\u8aad\u3080