使用.net core ABP和Angular模板构建博客管理系统（完善前台服务）

来源：互联网发布：搜索引擎优化案例分析编辑：程序博客网时间：2024/05/16 09:47

返回目录

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）：http://www.jianshu.com/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note.component.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note.component.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>

简单实现添加功能

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：

新建文件

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note.component.ts中实现删除方法

    protected delete(note: NoteDto): void {        this.noteService.Delete(note.id).subscribe(m => this.refresh())    }

删除方法可以用

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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