- 创建 UserController 数据接口用于生产模拟测试数据
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.edurt;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.concurrent.ConcurrentHashMap;
/**
* UserController <br/>
* 描述 : UserController <br/>
* 作者 : qianmoQ <br/>
* 版本 : 1.0 <br/>
* 创建时间 : 2018-03-13 下午2:29 <br/>
* 联系作者 : <a href="mailTo:shichengoooo@163.com">qianmoQ</a>
*/
@RestController
@RequestMapping(value = {"user"})
public class UserController {
/**
* 获取用户集合
*
* @return 用户集合数据
*/
@RequestMapping(value = "list")
ConcurrentHashMap<String, String> getUserList() {
ConcurrentHashMap<String, String> userMap = new ConcurrentHashMap<String, String>();
userMap.put("user1", "user1");
userMap.put("user2", "user2");
userMap.put("user3", "user3");
userMap.put("user4", "user4");
return userMap;
}
}
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {Injectable} from '@angular/core';
import {Http} from '@angular/http';
import 'rxjs/add/operator/catch';
import 'rxjs/add/operator/map';
/**
* 用户服务
*/
@Injectable()
export class AppService {
constructor(private http: Http) {
}
getUserList(): Promise<any> {
const url = '/user/list';
return this.http.get(url)
.toPromise()
.then(response => response.json())
.catch(this.handleError);
}
private handleError(error: Response | any) {
let errMsg: string;
console.error(errMsg);
return Promise.reject(errMsg);
}
}
- 修改 appmodule 引入数据服务和 httpmodule
import {AppService} from "./app.service";
import {HttpModule} from "@angular/http";
@NgModule({
declarations: [
...
],
imports: [
..
HttpModule
],
providers: [
AppService
],
bootstrap: [AppComponent]
})
export class AppModule {
}
import {Component} from '@angular/core';
import {AppService} from "./app.service";
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
title = 'app';
public userList;
constructor(private appService: AppService) {
this.userList = this.appService.getUserList();
console.log(this.userList);
}
}
此时运行服务打开浏览器查看控制台即可看到从后台获取的数据
