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上一篇写到 使用.net core ABP和Angular模板构建博客管理系统（创建前端菜单及页面）：/p/4ff4ddeae917
实现添加方法
在note-service.service.ts中添加Create方法
Create(input: CreateNoteDto): Observable<NoteDto> {const url_ = NoteApiUrls.Create;const content_ = JSON.stringify(input);const options_ = {body: content_,method: 'post',headers: new Headers({'Content-Type': 'application/json','Accept': 'application/json'})};return this.http.request(url_, options_).flatMap((response_) => {return this.processCreate(response_);}).catch((response_: any) => {if (response_ instanceof Response) {try {return this.processCreate(response_);} catch (e) {return <Observable<NoteDto>><any>Observable.throw(e);}} else {return <Observable<NoteDto>><any>Observable.throw(response_);}});};
在ponent.ts中添加createNote方法，
createNote() {const input = new CreateNoteDto();input.textType = 0;this.noteService.Create(input).subscribe(m => this.refresh()); // 一定要执行subscribe这个请求才会发出去}
在ponent.html中使用createNote方法
<button type="button" data-toggle="modal" class="btn btn-primary btn-circle waves-effect waves-circle waves-float pull-right" (click)="createNote()"><i class="material-icons">add</i></button>
抽象一个基类
我们看见这样有太多的重复代码，我们抽象一个基类出来吧。
如下新建一个文件：
写入以下内容,自己封装一下get，put，post，delete请求
import { Observable } from 'rxjs/Observable';import { Http, Headers, Response } from '@angular/http';import { SwaggerException } from '@shared/service-proxies/service-proxies';export abstract class ApiServiceBaseService {protected jsonParseReviver: (key: string, value: any) => any = undefined;constructor(protected http: Http) { }protected get<T>(url_: string): Observable<T> {const options_ = {method: 'get',headers: new Headers({'Content-Type': 'application/json','Accept': 'application/json'})};return this.p(url_, options_)}protected post<T, F>(url_: string, input: F): Observable<T> {const content_ = JSON.stringify(input);const options_ = {body: content_,method: 'post',headers: new Headers({'Content-Type': 'application/json','Accept': 'application/json'})};return this.p<T>(url_, options_)}protected put<T, F>(url_: string, input: F): Observable<T> {const content_ = JSON.stringify(input);const options_ = {body: content_,method: 'put',headers: new Headers({'Content-Type': 'application/json','Accept': 'application/json'})};return this.p<T>(url_, options_)}protected delete(url_: string): Observable<void> {const options_ = {method: 'delete',headers: new Headers({'Content-Type': 'application/json',})};return this.p<void>(url_, options_)}private p<T>(url_: string, options_): Observable<T> {return this.http.request(url_, options_).flatMap((response_) => {return this.process<T>(response_);}).catch((response_: any) => {if (response_ instanceof Response) {try {return this.process<T>(response_);} catch (e) {return <Observable<T>><any>Observable.throw(e);}} else {return <Observable<T>><any>Observable.throw(response_);}});}private process<T>(response: Response): Observable<T> {const status = response.status;const _headers: any = response.headers ? response.headers.toJSON() : {};if (status === 200) {const _responseText = response.text();let result200: any = null;const resultData200 = _responseText === '' ? null : JSON.parse(_responseText, this.jsonParseReviver);result200 = resultData200 ? resultData200 as T : null;return Observable.of(result200);} else if (status === 401) {const _responseText = response.text();return this.throwException('服务器错误', status, _responseText, _headers);} else if (status === 403) {const _responseText = response.text();return this.throwException('服务器错误', status, _responseText, _headers);} else if (status !== 200 && status !== 204) {const _responseText = response.text();return this.throwException('意料之外的出现', status, _responseText, _headers);}return Observable.of<T>(<any>null);}protected throwException(message: string, status: number, response: string,headers: { [key: string]: any; }, result?: any): Observable<any> {if (result !== null && result !== undefined) {return Observable.throw(result);} else {return Observable.throw(new SwaggerException(message, status, response, headers, null));}}}
note-service.service.ts 就可以简化了
import {ApiServiceBaseService} from '@shared/service-base/api-service-base.service';export class NoteServiceService extends ApiServiceBaseService {constructor(http: Http) {super(http);}Create(input: CreateNoteDto): Observable<NoteDto> {const url_ = NoteApiUrls.Create;return this.post<NoteDto, CreateNoteDto>(url_, input)};// 对于get请求我们要把参数拼接到url上面，这是api的特殊地方GetAll(MaxResultCount = 20, SkipCount = 0, key = ''): Observable<PageOfNoteDto> {let url_ = NoteApiUrls.GetAll + '?';url_ += 'SkipCount=' + encodeURIComponent('' + SkipCount) + '&';url_ += 'MaxResultCount=' + encodeURIComponent('' + MaxResultCount) + '&';url_ += 'key=' + encodeURIComponent('' + key);url_ = url_.replace(/[?&]$/, '');return this.get<PageOfNoteDto>(url_);}}
完善服务
添加两个dto
export class PublicNoteDto {id: number;title: string;content: string;des: string;img: string;tags: string;}export class UpdateNoteDto {id: number;title: string;content: string;}
增加3个方法
Update(input: UpdateNoteDto): Observable<NoteDto> {const url_ = NoteApiUrls.Update;return this.put<NoteDto, UpdateNoteDto>(url_, input)}Delete(id: number): Observable<void> {let url_ = NoteApiUrls.Delete + '?';url_ += 'Id=' + encodeURIComponent('' + id);return this.delete(url_);}PublicNote(input: PublicNoteDto): Observable<void> {const url_ = NoteApiUrls.PublicNote;return this.post<void, PublicNoteDto>(url_, input);}
测试一下删除方法，在ponent.ts中实现删除方法
protected delete(note: NoteDto): void {this.noteService.Delete(note.id).subscribe(m => this.refresh())}
思考
1、 列表页面继承了PagedListingComponentBase类，这个类到底提供了些什么。
2、在处理的时候应该有提示和遮罩层显得更加友好。
3、作者用了哪些UI组件。
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