{"id":39464,"date":"2023-11-27T13:22:22","date_gmt":"2023-09-16T22:04:42","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8angular%e4%b8%ad%ef%bc%8c%e7%ad%89%e5%be%85%e8%8e%b7%e5%8f%96%e6%89%80%e9%9c%80%e6%95%b0%e6%8d%ae%e5%90%8e%e5%86%8d%e8%bf%9b%e8%a1%8c%e6%b8%b2%e6%9f%93%e8%a7%a3%e6%9e%90%e3%80%82\/"},"modified":"2024-05-04T11:01:38","modified_gmt":"2024-05-04T03:01:38","slug":"%e5%9c%a8angular%e4%b8%ad%ef%bc%8c%e7%ad%89%e5%be%85%e8%8e%b7%e5%8f%96%e6%89%80%e9%9c%80%e6%95%b0%e6%8d%ae%e5%90%8e%e5%86%8d%e8%bf%9b%e8%a1%8c%e6%b8%b2%e6%9f%93%e8%a7%a3%e6%9e%90%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8angular%e4%b8%ad%ef%bc%8c%e7%ad%89%e5%be%85%e8%8e%b7%e5%8f%96%e6%89%80%e9%9c%80%e6%95%b0%e6%8d%ae%e5%90%8e%e5%86%8d%e8%bf%9b%e8%a1%8c%e6%b8%b2%e6%9f%93%e8%a7%a3%e6%9e%90%e3%80%82\/","title":{"rendered":"\u5728Angular\u4e2d\uff0c\u7b49\u5f85\u83b7\u53d6\u6240\u9700\u6570\u636e\u540e\u518d\u8fdb\u884c\u6e32\u67d3[\u89e3\u6790]"},"content":{"rendered":"<h2>\u65e0\u6cd5\u8bfb\u53d6\u672a\u5b9a\u4e49\u7684\u5c5e\u6027&#8217;****&#8217;<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d3a9e37434c4406c7e85a\/1-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2019-12-13 16.37.04.png\" \/><\/div>\n<h2>\u53ea\u9700\u8981\u4e2d\u6587\u4e2d\u7684\u4e00\u4e2a\u9009\u9879\u8fdb\u884c\u91ca\u4e49\uff1a<\/h2>\n<p>\u7248\u672c<\/p>\n<p>Angular CLI\u7248\u672c\uff1a8.3.20<br \/>\nNode\u7248\u672c\uff1a10.12.0<br \/>\n\u64cd\u4f5c\u7cfb\u7edf\uff1adarwin x64<br \/>\nAngular\u7248\u672c\uff1a8.2.13<\/p>\n<h2>\u95ee\u9898\u7684\u4ee3\u7801<\/h2>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Injectable<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/core<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">HttpClient<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/common\/http<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Observable<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">rxjs<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">HogeService<\/span> <span class=\"p\">{<\/span>\r\n\r\n  <span class=\"kd\">constructor<\/span><span class=\"p\">(<\/span><span class=\"k\">private<\/span> <span class=\"nx\">http<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HttpClient<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span> <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"nx\">getItem<\/span><span class=\"p\">(<\/span><span class=\"nx\">id<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span><span class=\"p\">):<\/span> <span class=\"nx\">Observable<\/span><span class=\"o\">&lt;<\/span><span class=\"kr\">any<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">http<\/span><span class=\"p\">.<\/span><span class=\"kd\">get<\/span><span class=\"o\">&lt;<\/span><span class=\"kr\">any<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">https:\/\/fugafuga.com\/api\/v2\/items\/<\/span><span class=\"dl\">'<\/span> <span class=\"o\">+<\/span> <span class=\"nx\">id<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">HogeComponent<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.\/hoge\/hoge.component<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">routes<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Routes<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n<span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n  <span class=\"p\">{<\/span>\r\n    <span class=\"na\">path<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">hoge\/:id<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"na\">component<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HogeComponent<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">];<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Component<\/span><span class=\"p\">,<\/span> <span class=\"nx\">OnInit<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/core<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">HogeService<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">..\/hoge.service<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">ActivatedRoute<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/router<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">HogeComponent<\/span> <span class=\"k\">implements<\/span> <span class=\"nx\">OnInit<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nl\">item<\/span><span class=\"p\">:<\/span> <span class=\"kr\">any<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"kd\">constructor<\/span><span class=\"p\">(<\/span><span class=\"k\">private<\/span> <span class=\"nx\">route<\/span><span class=\"p\">:<\/span> <span class=\"nx\">ActivatedRoute<\/span><span class=\"p\">,<\/span> <span class=\"k\">private<\/span> <span class=\"nx\">hogeService<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HogeService<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span> <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"nx\">ngOnInit<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">id<\/span> <span class=\"o\">=<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">route<\/span><span class=\"p\">.<\/span><span class=\"nx\">snapshot<\/span><span class=\"p\">.<\/span><span class=\"nx\">paramMap<\/span><span class=\"p\">.<\/span><span class=\"kd\">get<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">id<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">hogeService<\/span><span class=\"p\">.<\/span><span class=\"nx\">getItem<\/span><span class=\"p\">(<\/span><span class=\"nx\">id<\/span><span class=\"p\">).<\/span><span class=\"nx\">subscribe<\/span><span class=\"p\">(<\/span>\r\n      <span class=\"nx\">item<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">item<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">item<\/span><span class=\"p\">;<\/span>\r\n      <span class=\"p\">});<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"p\">{{<\/span> <span class=\"nx\">item<\/span><span class=\"p\">.<\/span><span class=\"nx\">name<\/span> <span class=\"p\">}}<\/span>\r\n<\/code><\/pre>\n<h2>\u53ef\u80fd\u7684\u539f\u56e0 de<\/h2>\n<p>undefined\u3068\u306a\u3063\u3066\u3044\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30bf\u30a4\u30d7\u30df\u30b9\u3000\u3000\u3000 \u2192\u3000\u3000 \u8868\u793a\u306f\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u8a72\u5f53\u305b\u305a<br \/>\n\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u306e\u53d6\u5f97\u304c\u5b8c\u4e86\u3059\u308b\u524d\u306b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3057\u3066\u3044\u308b \u3000 \u2190\u3000\u3000\u3053\u3063\u3061\u3067\u3057\u305f<\/p>\n<h2>\u89e3\u51b3\u65b9\u68481\uff1a\u4f7f\u7528\u300c?\u300d\u8fd0\u7b97\u7b26\u3002<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u6b63\u5f0f\u540d\u79f0\u3092 safe navigation operator \u3068\u3044\u3046\u305d\u3046\u3067\u3059<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u6f14\u7b97\u5b50\u306e\u524d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\u307e\u305f\u306fundefined\u306e\u5834\u5408\u305d\u308c\u4ee5\u964d\u306f\u8a55\u4fa1\u3057\u307e\u305b\u3093<\/ul>\n<\/li>\n<\/ul>\n<p>a?.b?.c?.d\u3068\u7d9a\u3051\u3066\u5229\u7528\u53ef\u80fd\u3067\u3059<\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u6211\u4eec\u5c06{{ item?.name }}\u8bbe\u7f6e\u4e3a\u9519\u8bef\u5c06\u4e0d\u518d\u663e\u793a\u3002<br \/>\n\u7136\u800c\uff0c\u6bcf\u6b21\u4e3a\u53ef\u80fd\u51fa\u73b0\u9519\u8bef\u7684\u5bf9\u8c61\u6dfb\u52a0?\u662f\u5f88\u9ebb\u70e6\u7684\uff0c\u6240\u4ee5\u6211\u4f7f\u7528\u4e86\u4ee5\u4e0b\u65b9\u6cd5\u3002<\/p>\n<h2>\u4f7f\u7528\u89e3\u51b3\u65b9\u68482 Resolve<\/h2>\n<p>Resolve\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u30b5\u30fc\u30d3\u30b9\u3092\u4f5c\u6210\u3057\u3001routing\u306e\u8a2d\u5b9a\u306bresolve\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8ffd\u52a0\u3057\u307e\u3059<br \/>\n\u3053\u308c\u306b\u3088\u308a\u3001\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u306e\u53d6\u5f97\u3092\u5f85\u3063\u3066\u304b\u3089\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/p>\n<h3>\u6b65\u9a5f<\/h3>\n<h4>\u521b\u5efaresolver\u670d\u52a1<\/h4>\n<pre class=\"post-pre\"><code>ng g s hoge-resolver\r\n<\/code><\/pre>\n<p>\u6211\u8ba4\u4e3a\u540d\u5b57\u65e0\u6240\u8c13\u3002\u6211\u5728\u8fd9\u91cc\u9009\u62e9\u4e86hoge-resolver\u3002<br \/>\n\u4e0b\u9762\u7684\u4ee3\u7801\u5c06\u88ab\u81ea\u52a8\u751f\u6210\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Injectable<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/core<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"p\">@<\/span><span class=\"nd\">Injectable<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">providedIn<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">root<\/span><span class=\"dl\">'<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">HogeResolverService<\/span> <span class=\"p\">{<\/span>\r\n\r\n  <span class=\"kd\">constructor<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span> <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h4>\u5b9e\u73b0Resolve\u63a5\u53e3\u3002<\/h4>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Injectable<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/core<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Resolve<\/span><span class=\"p\">,<\/span> <span class=\"nx\">ActivatedRouteSnapshot<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/router<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Observable<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">rxjs<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">HogeService<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.\/hoge.service<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"p\">@<\/span><span class=\"nd\">Injectable<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">providedIn<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">root<\/span><span class=\"dl\">'<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">HogeResolverService<\/span> <span class=\"k\">implements<\/span> <span class=\"nx\">Resolve<\/span><span class=\"o\">&lt;<\/span><span class=\"kr\">any<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n\r\n  <span class=\"kd\">constructor<\/span><span class=\"p\">(<\/span><span class=\"k\">private<\/span> <span class=\"na\">hogeService<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HogeService<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span> <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"nx\">resolve<\/span><span class=\"p\">(<\/span><span class=\"na\">route<\/span><span class=\"p\">:<\/span> <span class=\"nx\">ActivatedRouteSnapshot<\/span><span class=\"p\">):<\/span> <span class=\"nx\">Observable<\/span><span class=\"o\">&lt;<\/span><span class=\"kr\">any<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"kd\">const<\/span> <span class=\"nx\">id<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">route<\/span><span class=\"p\">.<\/span><span class=\"nx\">paramMap<\/span><span class=\"p\">.<\/span><span class=\"kd\">get<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">id<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">hogeService<\/span><span class=\"p\">.<\/span><span class=\"nx\">getItem<\/span><span class=\"p\">(<\/span><span class=\"nx\">id<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h4>\u5728\u8def\u7531\u8bbe\u7f6e\u4e2d\u6dfb\u52a0resolve\u5bf9\u8c61\u3002<\/h4>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">HogeComponent<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.\/hoge\/hoge.component<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">routes<\/span><span class=\"p\">:<\/span> <span class=\"nx\">Routes<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n<span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n  <span class=\"p\">{<\/span>\r\n    <span class=\"na\">path<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">hoge\/:id<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"na\">component<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HogeComponent<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"na\">resolve<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"na\">item<\/span><span class=\"p\">:<\/span> <span class=\"nx\">HogeResolverService<\/span>\r\n    <span class=\"p\">}<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">];<\/span>\r\n<span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0cresolve\u51fd\u6570\u4e2d\u7684item\u662f\u4e00\u4e2a\u7528\u4e8e\u540e\u7eed\u5f15\u7528\u7684\u540d\u79f0\uff0cHogeResolverService\u662f\u5148\u524d\u521b\u5efa\u7684\u670d\u52a1\u3002<\/p>\n<h4>\u5728\u7ec4\u4ef6\u4e2d\u5f15\u7528<\/h4>\n<p>\u60a8\u53ef\u4ee5\u8ba2\u9605ActivatedRoute.data\u5e76\u5f15\u7528\u5148\u524d\u7684\u9879\u76ee\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Component<\/span><span class=\"p\">,<\/span> <span class=\"nx\">OnInit<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/core<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">ActivatedRoute<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">@angular\/router<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u7701\u7565<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">HogeComponent<\/span> <span class=\"k\">implements<\/span> <span class=\"nx\">OnInit<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nl\">item<\/span><span class=\"p\">:<\/span> <span class=\"kr\">any<\/span><span class=\"p\">;<\/span>\r\n\r\n  <span class=\"kd\">constructor<\/span><span class=\"p\">(<\/span><span class=\"k\">private<\/span> <span class=\"nx\">route<\/span><span class=\"p\">:<\/span> <span class=\"nx\">ActivatedRoute<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span> <span class=\"p\">}<\/span>\r\n\r\n  <span class=\"nx\">ngOnInit<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">route<\/span><span class=\"p\">.<\/span><span class=\"nx\">data<\/span><span class=\"p\">.<\/span><span class=\"nx\">subscribe<\/span><span class=\"p\">(<\/span><span class=\"nx\">data<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">item<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">data<\/span><span class=\"p\">.<\/span><span class=\"nx\">item<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u662f\u9519\u8bef\u5df2\u89e3\u51b3\u3002<\/p>\n<h2>\u6700\u540e<\/h2>\n<p>\u7531\u4e8eResolve\u4f3c\u4e4e\u662f\u63a7\u5236\u8def\u7531\u7684route-guards\u4e4b\u4e00\uff0c\u6240\u4ee5\u6211\u4e5f\u5e0c\u671b\u5728\u6709\u673a\u4f1a\u7684\u65f6\u5019\u5b66\u4e60\u5176\u4ed6\u529f\u80fd\u3002<\/p>\n<h2>\u8bf7\u5728\u4e2d\u56fd\u7684\u672c\u571f\u53c2\u8003\u4e00\u4e0b\u3002<\/h2>\n<p>Angular\u5bfc\u822a\u524d\u83b7\u53d6\u6570\u636e\u7684\u516c\u5f0f<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u65e0\u6cd5\u8bfb\u53d6\u672a\u5b9a\u4e49\u7684\u5c5e\u6027&#8217;****&#8217; \u53ea\u9700\u8981\u4e2d\u6587\u4e2d\u7684\u4e00\u4e2a\u9009\u9879\u8fdb\u884c\u91ca\u4e49\uff1a \u7248\u672c Angula [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-39464","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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>\u5728Angular\u4e2d\uff0c\u7b49\u5f85\u83b7\u53d6\u6240\u9700\u6570\u636e\u540e\u518d\u8fdb\u884c\u6e32\u67d3[\u89e3\u6790] - Blog - Silicon Cloud<\/title>\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\/zh\/blog\/\u5728angular\u4e2d\uff0c\u7b49\u5f85\u83b7\u53d6\u6240\u9700\u6570\u636e\u540e\u518d\u8fdb\u884c\u6e32\u67d3\u89e3\u6790\u3002\/\" \/>\n<meta property=\"og:locale\" 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