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				| # 本地化
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| 
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| 在阅读本地化管道和本地化服务之前你应该了解本地化Key.
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| 
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| 本地化key格式由两个部分组成,分别是**资源名**和**Key**
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| `ResourceName::Key`
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| 
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| > 如果你没有指定资源名称,它默认是在 `environment.ts` 中声明的 `defaultResourceName`.
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| 
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| ```js
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| const environment = {
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|   //...
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|   localization: {
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|     defaultResourceName: 'MyProjectName',
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|   },
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| };
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| ```
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| 
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| 所以这两个结果是一样的:
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| 
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| ```html
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| <h1>{%{{{ '::Key' | abpLocalization }}}%}</h1>
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| 
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| <h1>{%{{{ 'MyProjectName::Key' | abpLocalization }}}%}</h1>
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| ```
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| 
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| ## 使用本地化管道
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| 
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| 你可以使用 `abpLocalization` 管道来获取本地化的文本. 例:
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| 
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| ```html
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| <h1>{%{{{ 'Resource::Key' | abpLocalization }}}%}</h1>
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| ```
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| 
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| 管道将用本地化的文本替换Key.
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| 
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| 你还可以指定一个默认值,如下所示:
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| 
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| ```html
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| <h1>{%{{{ { key: 'Resource::Key', defaultValue: 'Default Value' } | abpLocalization }}}%}</h1>
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| ```
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| 
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| 要使用插值,必须将插值作为管道参数给出. 例如:
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| 
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| 本地化数据存储在键值对中:
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| 
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| ```js
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| {
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|   //...
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|   AbpAccount: { // AbpAccount is the resource name
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|     Key: "Value",
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|     PagerInfo: "Showing {0} to {1} of {2} entries"
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|   }
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| }
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| ```
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| 
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| 所以我们可以这样使用Key:
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| 
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| ```html
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| <h1>{%{{{ 'AbpAccount::PagerInfo' | abpLocalization:'20':'30':'50' }}}%}</h1>
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| 
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| <!-- Output: Showing 20 to 30 of 50 entries -->
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| ```
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| 
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| ### 使用本地化服务
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| 
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| 首先应该从 **@abp/ng.core** 导入 `LocalizationService`.
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| 
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| ```js
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| import { LocalizationService } from '@abp/ng.core';
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| 
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| class MyClass {
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|   constructor(private localizationService: LocalizationService) {}
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| }
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| ```
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| 
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| 之后你就可以使用本地化服务.
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| 
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| > 你可以将插值参数作为参数添加到 `instant()` 和 `get()` 方法中.
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| 
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| ```js
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| this.localizationService.instant('AbpIdentity::UserDeletionConfirmation', 'John');
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| 
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| // with fallback value
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| this.localizationService.instant(
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|   { key: 'AbpIdentity::UserDeletionConfirmation', defaultValue: 'Default Value' },
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|   'John',
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| );
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| 
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| // Output
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| // User 'John' will be deleted. Do you confirm that?
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| ```
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| 
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| 要获取[_Observable_](https://rxjs.dev/guide/observable)的本地化文本,应该使用 `get` 方法而不是 `instant`:
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| 
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| ```js
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| this.localizationService.get('Resource::Key');
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| 
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| // with fallback value
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| this.localizationService.get({ key: 'Resource::Key', defaultValue: 'Default Value' });
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| ```
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| 
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| ### 使用配置状态
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| 
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| 要使用 `getLocalization` 方法,你应该导入 `ConfigState`.
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| 
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| ```js
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| import { ConfigState } from '@abp/ng.core';
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| ```
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| 
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| 然后你可以按以下方式使用它:
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| 
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| ```js
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| this.store.selectSnapshot(ConfigState.getLocalization('ResourceName::Key'));
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| ```
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| 
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| `getLocalization` 方法可以与 `本地化key` 和  [`LocalizationWithDefault`](https://github.com/abpframework/abp/blob/dev/npm/ng-packs/packages/core/src/lib/models/config.ts#L34) 接口一起使用.
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| 
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| ```js
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| this.store.selectSnapshot(
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|   ConfigState.getLocalization(
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|     {
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|       key: 'AbpIdentity::UserDeletionConfirmation',
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|       defaultValue: 'Default Value',
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|     },
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|     'John',
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|   ),
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| );
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| ```
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| 
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| 本地化资源存储在 `ConfigState` 的 `localization` 属性中.
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| 
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| ## RTL支持
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| 
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| 从v2.9开始,ABP支持RTL. 如果使用v2.9及更高版本生成新项目,你无需进行任何更改. 如果要从早期版本迁移项目,请按照以下2个步骤操作:
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| 
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| #### 步骤 1. 为 Bootstrap LRT和RTL创建Chunks
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| 
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| 在[angular.json中找到样式配置](https://angular.io/guide/workspace-config#style-script-config)确保项目中的chunks含有 `bootstrap-rtl.min` 和 `bootstrap-ltr.min`:
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| 
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| ```json
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| {
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|   "projects": {
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|     "MyProjectName": {
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|       "architect": {
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|         "build": {
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|           "options": {
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|             "styles": [
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|               {
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|                 "input": "node_modules/@fortawesome/fontawesome-free/css/all.min.css",
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|                 "inject": true,
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|                 "bundleName": "fontawesome-all.min"
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|               },
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|               {
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|                 "input": "node_modules/@fortawesome/fontawesome-free/css/v4-shims.min.css",
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|                 "inject": true,
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|                 "bundleName": "fontawesome-v4-shims.min"
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|               },
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|               {
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|                 "input": "node_modules/@abp/ng.theme.shared/styles/bootstrap-rtl.min.css",
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|                 "inject": false,
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|                 "bundleName": "bootstrap-rtl.min"
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|               },
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|               {
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|                 "input": "node_modules/bootstrap/dist/css/bootstrap.min.css",
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|                 "inject": true,
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|                 "bundleName": "bootstrap-ltr.min"
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|               },
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|               "apps/dev-app/src/styles.scss"
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|             ],
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|           }
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|         }
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|       }
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|     }
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|   }
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| }
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| ```
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| 
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| #### 步骤 2. 清除AppComponent中延迟加载的Fontawesome
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| 
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| 如果你如上所述为Fontawesome创建并且注入了chunks,就不再需要v2.9版本之前的实现的 `AppComponent` 延迟加载. 删除它们即可,新版的 `AppComponent` 如下所示:
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| 
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| ```js
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| import { Component } from '@angular/core';
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| 
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| @Component({
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|   selector: 'app-root',
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|   template: `
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|     <abp-loader-bar></abp-loader-bar>
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|     <router-outlet></router-outlet>
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|   `,
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| })
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| export class AppComponent {}
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| ```
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| 
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| ## 文化名称到语言环境文件名的映射
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| 
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| .NET中定义的某些文化名称与Angular语言环境不匹配. 在这种情况下Angular应用程序在运行时会引发如下错误:
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| 
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| 
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| 
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| 如果你看到这样的错误,你应该像下面这样传递 `cultureNameLocaleFileMap` 属性到CoreModule的forRoot静态方法.
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| 
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| ```js
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| // app.module.ts
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| 
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| @NgModule({
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|   imports: [
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|     // other imports
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|      CoreModule.forRoot({
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|       // other options
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|       cultureNameLocaleFileMap: { 
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|         "DotnetCultureName": "AngularLocaleFileName",
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|         "pt-BR": "pt"  // example
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|       }
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|     })
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|     //...
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| ```
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| 
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| 查看 [Angular中所有的语言环境文件](https://github.com/angular/angular/tree/master/packages/common/locales).
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| 
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| ## 另请参阅
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| 
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| * [ASP.NET Core中的本地化](../../Localization.md)
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| 
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| ## 下一步是什么?
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| 
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| * [权限管理](./Permission-Management.md) |