error-handling ERR_CONNECTION_REFUSED展示如何如下处理错误: private handleError (error: Response | any) {
// In a real world app, we might use a remote logging infrastructure
let errMsg: string;
i
我有一个自定义类,看起来像下面: public class customClass(){
private int keyCode;
private boolean up;
private String toTrigger;
public String getTrigger();
public boolean up();
public i