Java Angular 2-按ID的HTTP删除方法不起作用
我试图从表中删除一个对象,将其作为参数传递给组件,但是,当我最终调用后端时,对象的ID始终为空 我的HTML代码如下所示:Java Angular 2-按ID的HTTP删除方法不起作用,java,angular,http,http-delete,Java,Angular,Http,Http Delete,我试图从表中删除一个对象,将其作为参数传递给组件,但是,当我最终调用后端时,对象的ID始终为空 我的HTML代码如下所示: <tr *ngFor="let articulo of articulos | nombre: nombreText | familia: familiaText | codigo: codigoText | paginate: {itemsPerPage: 15, currentPage:page, id: '1' };"> <td>{{art
<tr *ngFor="let articulo of articulos | nombre: nombreText | familia: familiaText | codigo: codigoText | paginate: {itemsPerPage: 15, currentPage:page, id: '1' };">
<td>{{articulo.codigo}}</td>
<td>{{articulo.proveedor}}</td>
<td>{{articulo.nombre}}</td>
<td>{{articulo.familia}}</td>
<td>{{articulo.precio}}</td>
<td>{{articulo.fechaModificacion}}</td>
<td>{{articulo.anotaciones}}</td>
<td>
<div class="btn-group btn-group-sm pull-right" >
<button class="btn btn-xs pink whiteFont" title="Editar artículo">
<i class="fa fa-pencil" aria-hidden="true"></i>
</button>
<button (click)="deleteArticulo(articulo); $event.stopPropagation()" class="btn btn-xs pink whiteFont" title="Eliminar artículo">
<i class="fa fa-trash-o" aria-hidden="true"></i>
</button>
</div>
</td>
</tr>
最后,我的java控制器:
@DeleteMapping("/articulos/{id}")
public ResponseEntity<Void> deleteArticulo(Integer id){
try {
articulosService.delete(id);
return new ResponseEntity<Void>(HttpStatus.OK);
} catch(Exception e) {
return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@DeleteMapping(“/articulos/{id}”)
公共响应deleteArticulo(整数id){
试一试{
articulosService.删除(id);
返回新的响应状态(HttpStatus.OK);
}捕获(例外e){
返回新的响应属性(HttpStatus.INTERNAL_SERVER_ERROR);
}
}
原因是您的Java后端不知道如何映射传递给它的值。在这种情况下,@PathVariable
@DeleteMapping("/articulos/{id}")
public ResponseEntity<Void> deleteArticulo(@PathVariable Integer id){
try {
articulosService.delete(id);
return new ResponseEntity<Void>(HttpStatus.OK);
} catch(Exception e) {
return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@DeleteMapping(“/articulos/”,products=MediaType.APPLICATION\u JSON\u VALUE)
公共响应性deleteArticulo(@RequestParam字符串id){
试一试{
articulosService.delete(Integer.valueOf(id));
返回新的响应状态(HttpStatus.OK);
}捕获(例外e){
返回新的响应属性(HttpStatus.INTERNAL_SERVER_ERROR);
}
}
原因是您的Java后端不知道如何映射传递给它的值。在这种情况下,@PathVariable
@DeleteMapping("/articulos/{id}")
public ResponseEntity<Void> deleteArticulo(@PathVariable Integer id){
try {
articulosService.delete(id);
return new ResponseEntity<Void>(HttpStatus.OK);
} catch(Exception e) {
return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@DeleteMapping(“/articulos/”,products=MediaType.APPLICATION\u JSON\u VALUE)
公共响应性deleteArticulo(@RequestParam字符串id){
试一试{
articulosService.delete(Integer.valueOf(id));
返回新的响应状态(HttpStatus.OK);
}捕获(例外e){
返回新的响应属性(HttpStatus.INTERNAL_SERVER_ERROR);
}
}
尝试在正文中传递id而不是url。不知道这是可能的,我会尽快检查它是否有效。提前谢谢。尝试在正文中传递id而不是url。不知道这是可能的,我会尽快检查它是否有效。提前谢谢。谢谢!!它只适用于@PathVariable,但我将添加所有其他内容以避免所有可能的错误。谢谢!!它只适用于@PathVariable,但我将添加所有其他内容以避免所有可能的错误。
publuc class Args {
id: string;
val: string;
}
delete(id: number) {
let optionsArray: Args[] = [
{id: "id" val: id.toString()}
];
return this.http.delete(this.articulosURL, this.addRequestOptions(oprionsArray, null)).map(() => null);
}
/***
* Generates default headers I.E. #Authorization and append any optional headers provided
* @param {Args[]} args an array of Args[KEY, Value]
* @returns {Headers}
*/
private addHeader(args: Args[]): Headers {
let headers: Headers = new Headers();
// Use this block only if you have Spring OAuth2 security or any other security that require Authorization client id
let a: Args = new Args;
a.id = "Authorization";
a.val = "your client id";
headers.append(a.id, a.val);
// END
if (args == null) return headers;
args.forEach(a => {
headers.append(a.id, a.val);
});
return headers;
}
/***
* Generates default headers as default option and add any provided search parameters to the #RequestOptions
* @param {Args[]} args an array of request parameters
* @param {Args[]} headers an array of optional headers
* @returns {RequestOptions}
*/
private addRequestOptions(args: Args[], headers: Args[]): RequestOptions {
let options: RequestOptions = new RequestOptions();
options.headers = this.addHeader(headers);
options.params = new URLSearchParams();
if (args == null || args == []) return options;
args.forEach(a => {
options.params.append(a.id, a.val);
});
return options;
}