{"id":37,"date":"2025-05-28T12:11:55","date_gmt":"2025-05-28T04:11:55","guid":{"rendered":"https:\/\/blog.pixris.online\/?p=37"},"modified":"2025-05-28T12:16:15","modified_gmt":"2025-05-28T04:16:15","slug":"net-8%e6%96%b0%e7%89%b9%e6%80%a7%e5%ae%9e%e8%b7%b5%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/blog.pixris.online\/index.php\/2025\/05\/28\/37\/","title":{"rendered":".NET 8\u65b0\u7279\u6027\u5b9e\u8df5\u7b14\u8bb0"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u73af\u5883\u51c6\u5907<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1.1 \u5b89\u88c5\u8981\u6c42<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u200b<strong>SDK\u7248\u672c<\/strong>\u200b\uff1a.NET 8.0.100+<\/li>\n\n\n\n<li>\u200b<strong>IDE\u652f\u6301<\/strong>\u200b\uff1a\n<ul class=\"wp-block-list\">\n<li>Visual Studio 2022 17.8+<\/li>\n\n\n\n<li>VS Code + C# Dev Kit<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u200b<strong>\u8fd0\u884c\u5e73\u53f0<\/strong>\u200b\uff1aWindows\/Linux\/macOS<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code># \u68c0\u67e5\u5f53\u524d\u7248\u672c\ndotnet --version\n# \u521b\u5efa\u65b0\u9879\u76ee\ndotnet new console -o Net8Demo<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001C# 12 \u8bed\u8a00\u7279\u6027<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 \u4e3b\u6784\u9020\u51fd\u6570\uff08Primary Constructors\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u9002\u7528\u573a\u666f<\/strong>\u200b\uff1a\u7b80\u5316\u7c7b\u4e0e\u7ed3\u6784\u4f53\u7684\u6784\u9020\u51fd\u6570\u58f0\u660e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7c7b\u4e2d\u4f7f\u7528\u4e3b\u6784\u9020\u51fd\u6570\npublic class User(string name, int age)\n{\n    public string Name { get; } = name;\n    public int Age => age;\n}\n\n\/\/ \u4f7f\u7528\u793a\u4f8b\nvar user = new User(\"Alice\", 30);\nConsole.WriteLine(user.Name); \/\/ \u8f93\u51fa \"Alice\"<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u6ce8\u610f\u4e8b\u9879<\/strong>\u200b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u907f\u514d\u5728\u6784\u9020\u51fd\u6570\u4e2d\u6267\u884c\u590d\u6742\u903b\u8f91<\/li>\n\n\n\n<li>\u4e0d\u53ef\u7528\u4e8e\u9700\u8981\u5b57\u6bb5\u521d\u59cb\u5316\u7684\u573a\u666f<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 \u96c6\u5408\u8868\u8fbe\u5f0f\uff08Collection Expressions\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7edf\u4e00\u96c6\u5408\u521d\u59cb\u5316\u8bed\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u4efb\u4f55\u96c6\u5408\u7c7b\u578b\u5747\u53ef\u4f7f\u7528\u7edf\u4e00\u8bed\u6cd5\nint&#91;] array = &#91;1, 2, 3];\nList&lt;int> list = &#91;4, 5, 6];\nSpan&lt;int> span = &#91;7, 8, 9];\n\n\/\/ \u7ed3\u5408\u5c55\u5f00\u8fd0\u7b97\u7b26\nList&lt;int> combined = &#91;.. array, .. list, 10];<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u6027\u80fd\u6539\u8fdb<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 \u539f\u751fAOT\u589e\u5f3a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u4f18\u5316\u70b9<\/strong>\u200b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u66f4\u5c0f\u7684\u4e8c\u8fdb\u5236\u4f53\u79ef\uff08\u51cf\u5c1130%+\uff09<\/li>\n\n\n\n<li>\u6539\u8fdb\u7684\u526a\u88c1\uff08Trimming\uff09\u80fd\u529b<\/li>\n\n\n\n<li>\u652f\u6301\u66f4\u591a\u7c7b\u5e93\uff08\u5982<code>System.Text.Json<\/code>\uff09<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code># \u53d1\u5e03AOT\u5e94\u7528\ndotnet publish -c Release -p:PublishAot=true<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 \u4ee3\u7801\u751f\u6210\u4f18\u5316<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SIMD\u6307\u4ee4\u81ea\u52a8\u5411\u91cf\u5316<\/li>\n\n\n\n<li>\u6539\u8fdb\u7684\u6808\u5206\u914d\u7b56\u7565<\/li>\n\n\n\n<li>\u65b0\u7684<code>FrozenDictionary<\/code>\u9ad8\u6027\u80fd\u96c6\u5408<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u521b\u5efa\u53ea\u8bfb\u9ad8\u6027\u80fd\u5b57\u5178\nvar frozenDict = new Dictionary&lt;string, int>()\n{\n    &#91;\"Apple\"] = 1,\n    &#91;\"Banana\"] = 2\n}.ToFrozenDictionary();<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001ASP.NET Core\u65b0\u7279\u6027<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 \u8def\u7531\u6539\u8fdb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u53c2\u6570\u7ed1\u5b9a\u589e\u5f3a<\/strong>\u200b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>app.MapGet(\"\/products\/{id:int}\", (int id) => Results.Ok(GetProduct(id)));\n\n\/\/ \u652f\u6301\u590d\u6742\u5bf9\u8c61\u7ed1\u5b9a\napp.MapPost(\"\/search\", (ProductFilter filter) => SearchService.Query(filter));<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 \u8eab\u4efd\u8ba4\u8bc1API<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b0\u589e<code>Identity API endpoints<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>builder.Services.AddAuthorization();\nbuilder.Services.AddIdentityApiEndpoints&lt;User>().AddEntityFrameworkStores&lt;AppDbContext>();\n\napp.MapGroup(\"\/account\").MapIdentityApi&lt;User>();<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u5de5\u5177\u94fe\u66f4\u65b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">5.1 \u70ed\u91cd\u8f7d\u589e\u5f3a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u652f\u6301\u66f4\u591a\u573a\u666f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fee\u6539LINQ\u67e5\u8be2<\/li>\n\n\n\n<li>\u8c03\u6574\u8def\u7531\u914d\u7f6e<\/li>\n\n\n\n<li>\u4fee\u6539\u4e2d\u95f4\u4ef6\u987a\u5e8f<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u4fee\u6539\u4ee3\u7801\u540e\u4fdd\u5b58\u5373\u53ef\u7acb\u5373\u751f\u6548\uff08\u65e0\u9700\u91cd\u542f\uff09\napp.UseMiddleware&lt;RequestLogger>();<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">5.2 \u5bb9\u5668\u5316\u6539\u8fdb<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># \u65b0\u57fa\u7840\u955c\u50cf\uff08Alpine\u4f18\u5316\u7248\uff09\nFROM mcr.microsoft.com\/dotnet\/aspnet:8.0-alpine\n\n# \u652f\u6301rootless\u5bb9\u5668\nUSER app:app\nEXPOSE 8080<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u5176\u4ed6\u91cd\u8981\u66f4\u65b0<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u529f\u80fd\u6a21\u5757<\/th><th>\u65b0\u7279\u6027\u63cf\u8ff0<\/th><th>\u9002\u7528\u573a\u666f<\/th><\/tr><\/thead><tbody><tr><td>\u200b<strong>Blazor<\/strong>\u200b<\/td><td>\u670d\u52a1\u5668\u7aef\u6e32\u67d3\u6027\u80fd\u63d0\u534740%<\/td><td>Web\u5e94\u7528\u5f00\u53d1<\/td><\/tr><tr><td>\u200b<strong>MAUI<\/strong>\u200b<\/td><td>iOS\u5185\u5b58\u4f18\u5316+\u65b0\u63a7\u4ef6\u5e93<\/td><td>\u8de8\u5e73\u53f0\u79fb\u52a8\u5f00\u53d1<\/td><\/tr><tr><td>\u200b<strong>EF Core 8<\/strong>\u200b<\/td><td>\u65f6\u7a7a\u6570\u636e\u652f\u6301+\u6279\u91cf\u66f4\u65b0\u4f18\u5316<\/td><td>\u6570\u636e\u5e93\u64cd\u4f5c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001\u5347\u7ea7\u6ce8\u610f\u4e8b\u9879<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u200b<strong>\u7834\u574f\u6027\u53d8\u66f4<\/strong>\u200b\uff1a\n<ul class=\"wp-block-list\">\n<li><code>Newtonsoft.Json<\/code>\u9ed8\u8ba4\u4e0d\u518d\u5305\u542b<\/li>\n\n\n\n<li>\u90e8\u5206API\u7b7e\u540d\u8c03\u6574\uff08\u542f\u7528<code>&lt;WarningsAsErrors&gt;<\/code>\u6392\u67e5\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u200b<strong>\u517c\u5bb9\u6027\u68c0\u67e5<\/strong>\u200b\uff1a bashbash\u590d\u5236<code>dotnet upgrade-assistant analyze<\/code><\/li>\n\n\n\n<li>\u6027\u80fd\u76d1\u63a7\u5efa\u8bae\uff1a\u4f7f\u7528<code>dotnet-counters<\/code>\u89c2\u5bdfGC\u538b\u529b<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b66\u4e60\u8d44\u6e90<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/learn.microsoft.com\/dotnet\/core\/whats-new\/dotnet-8\">\u5b98\u65b9\u6587\u6863<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/zh-cn\/shows\/\">Channel 9 \u89c6\u9891\u6559\u7a0b<\/a><\/li>\n\n\n\n<li>\u4e66\u7c4d\u63a8\u8350\uff1a\u300aC# 12 and .NET 8 \u73b0\u4ee3\u8de8\u5e73\u53f0\u5f00\u53d1\u300b<\/li>\n<\/ol>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u63d0\u793a\uff1a\u4f7f\u7528<code>#nullable enable<\/code>\u542f\u7528\u4e25\u683c\u7a7a\u5b89\u5168\u68c0\u67e5\u53ef\u907f\u514d90%\u7684\u7a7a\u5f15\u7528\u5f02\u5e38<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u5b9e\u8df5\u8ba1\u5212<\/strong>\u200b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u73b0\u6709\u9879\u76ee\u4e2d\u5b9e\u73b0AOT\u7f16\u8bd1<\/li>\n\n\n\n<li>\u6d4b\u8bd5\u96c6\u5408\u8868\u8fbe\u5f0f\u8bed\u6cd5<\/li>\n\n\n\n<li>\u8bc4\u4f30Blazor SSR\u6027\u80fd\u63d0\u5347\u6548\u679c<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u73af\u5883\u51c6\u5907 1.1 \u5b89\u88c5\u8981\u6c42 \u4e8c\u3001C# 12 \u8bed\u8a00\u7279\u6027 2.1 \u4e3b\u6784\u9020\u51fd\u6570\uff08Primary Construc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,16,15],"tags":[],"class_list":["post-37","post","type-post","status-publish","format-standard","hentry","category-net","category-c","category-15"],"_links":{"self":[{"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/posts\/37","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/comments?post=37"}],"version-history":[{"count":7,"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/posts\/37\/revisions"}],"predecessor-version":[{"id":46,"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/posts\/37\/revisions\/46"}],"wp:attachment":[{"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/media?parent=37"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/categories?post=37"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.pixris.online\/index.php\/wp-json\/wp\/v2\/tags?post=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}