Question

我是角色的新手，我正在开展一个涉及angular2和Springboot的项目。

我的问题是：

我在springboot中创建了一个REST控制器。
在Angular中，我已经在我的组件中注入了一项服务并实施了在ngOnInit内调用服务方法。
一切正常，预期的召唤来自棱角分明前缀为springBoot的REST CONTROLLER。
但问题是，我在Angular中未定义。我没有得到任何数据在角度。
我可以在Eclipse中看到REST控制器返回数据，但我没有用角度来获取它。
即使我从浏览器中删除了网址，我也可以在浏览器上获取JSON。
我已经确认了JSON，并且它是正确的。

以下是我的角色服务：

import { Component , ViewContainerRef ,ViewEncapsulation} from '@angular/core';
import { OnInit } from '@angular/core' ;
import { ProfileService } from './profile.service' ;
import { Observable } from 'rxjs/Observable';
import { Profile } from './profile';

import {FormsModule} from '@angular/forms' ;
import { Overlay ,overlayConfigFactory } from 'angular2-modal' ;
import { Modal , BSModalContext } from 'angular2-modal/plugins/bootstrap';
import {CustomModalContext , ProfileCreate } from './profile-create.component' ;

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.scss'],
    providers: [ProfileService , Modal]  
})
export class AppComponent implements OnInit{
    title = 'Permission Matrix';

constructor(private _profileService : ProfileService ,  public modal : Modal){}
profiles: Profile[]; 

ngOnInit(){
    console.log("inside component ");
    this.getHeroes();
}

getHeroes(): void {
    this._profileService
        .getProfiles()
        .then(prfiles => {
          this.profiles = prfiles;
          console.log(this.profiles);
        });
}

getCreateUpdateScreen(){
    return this.modal.open(ProfileCreate, overlayConfigFactory({num1 : 2, num2 : 3 }, BSModalContext));
}

下面是我的角色成分：

export class Profile {
    profil_id : string ;
    profil_name_lang: string;
    profil_name_short: string;
    geschaeftsbereich: string;
    spezialberatung: string;
}

下面是我在angular中的映射类：

package permissionbackendservice.permissionmatrix.controller;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import permissionbackendservice.permissionmatrix.domain.Profile;
import permissionbackendservice.permissionmatrix.dto.ProfileDto;
import permissionbackendservice.permissionmatrix.service.ProfileService;

@RestController
public class ProfileController {

    private final ProfileService profileservice;            

    @Autowired
    ProfileController(ProfileService profileservice) {
        this.profileservice = profileservice;
    }

    @RequestMapping("/profiles")
    public List<Profile> readprofiles(){
        // This Function will fetch all the profiles in the database
        List<Profile> profileList = null ;                       
        try {
            profileList = profileservice.readProfiles();
        } catch(Exception e) {
            e.printStackTrace();
        }

        return profileList ; 
    }

    // function to delete an existing profiles
    @RequestMapping(method = RequestMethod.POST ,value = "/deleteprofile" )
    public void deleteProfile(@RequestBody List<Profile> profile){                    
        try {
            profileservice.deleteProfile(profile);
        } catch(Exception e) {
            e.printStackTrace();
        }                       
    }

    @RequestMapping(method = RequestMethod.POST ,value = "/saveprofile")
    public void addProfile(@RequestBody Profile profile){ // this function is for creating new profile
        profileservice.addProfile(profile);
    }

    @RequestMapping(method = RequestMethod.POST ,value = "/updateprofile")
    public void updateProfile(@RequestBody Profile profile){  // this function is for updating new profile
        profileservice.updateProfile(profile);
    }

    /*
    @RequestMapping(method = RequestMethod.POST, value = "/saveprofile") // function to both add and update profiles in database 
    public void saveProfile(@RequestParam(value = "profilNameLang") String profileNameLang, @RequestParam(value = "profilNameShort") String  profileNameShort , @RequestParam(value = "geschaeftsbereich") String geschaeftsbereich, @RequestParam(value = "profileId") String  profileId) {
        // In this function control will handled in two ways .If the profileId is null then it means its an addition of new profile as in this case profile id
        // will be generated in code and not as an user input ,otherwise if the profile id is not null then its a case  of update .
        if(profileId == null || profileId.isEmpty()){
                                               profileservice.addProfile(profileNameLang, geschaeftsbereich, profileNameShort);
        } else {
            profileservice.updateProfile(profileNameLang, geschaeftsbereich, profileNameShort, profileId);
        }                       
    }            
    */          
}

下面是我的弹簧控制器：

<a href="data:application/json; YOUR JSON DATA HERE" download="yourfilename.json">Save</a>

Angular2服务无法从Spring Controller获取数据

0 个答案: