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import errorManager from '@ohos.app.ability.errorManager';
import { BusinessError } from '@kit.BasicServicesKit';
import { WriteOptions } from '@kit.CoreFileKit';
import { appRecovery, common, Want } from '@kit.AbilityKit';
import { DateUtil } from './DateUtil';
import { LogUtil } from './LogUtil';
import { FileUtil } from './FileUtil';
import { AppUtil } from './AppUtil';/*** 定义异常对象的接口。*/
interface ErrorObject {message?: string; // 错误消息code?: number; // 错误码details?: string; // 错误详情stack?: string; // 错误堆栈信息
}/*** 全局异常捕获与崩溃日志收集工具类。** @author 鸿蒙布道师* @since 2025/04/08*/
export class CrashUtil {private static observerId: number | undefined = undefined; // 错误观测器 IDprivate static errorFilePath: string | undefined = undefined; // 错误日志文件路径/*** 注册错误观测器。* 注册后可以捕获到应用产生的 JS Crash，应用崩溃时进程不会退出，并将异常信息写入本地文件。*/static onHandledException(): void {try {if (CrashUtil.observerId === undefined) {CrashUtil.observerId = errorManager.on('error', {/*** 捕获未处理的异常信息。** @param errMsg 异常信息。*/onUnhandledException(errMsg: string): void {const errStr = `${DateUtil.getTodayStr()} - 未处理异常：\n${errMsg}\n\n`;CrashUtil.writeErrorLog(errStr);},/*** 捕获异常对象。** @param errObject 异常对象。*/onException(errObject: Error | ErrorObject): void {const errStr = `${DateUtil.getTodayStr()} - 异常对象：\n${JSON.stringify(errObject)}\n\n`;CrashUtil.writeErrorLog(errStr);}});}} catch (err) {LogUtil.error(`注册错误观测器失败：${err}`);}}/*** 注销错误观测器。*/static onExceptionDestroy(): void {try {if (CrashUtil.observerId !== undefined) {errorManager.off('error', CrashUtil.observerId, (err: BusinessError) => {if (err) {LogUtil.error(`注销错误观测器失败：${JSON.stringify(err)}`);}});CrashUtil.observerId = undefined;}} catch (err) {LogUtil.error(`注销错误观测器时发生错误：${err}`);}}/*** 获取错误日志文件路径。** @returns 返回错误日志文件路径。*/static getErrorFilePath(): string {if (!CrashUtil.errorFilePath) {CrashUtil.errorFilePath = FileUtil.getFilesDirPath("harmony_utils_error_log", "ErrorLog.json");}return CrashUtil.errorFilePath;}/*** 读取错误日志文件的 JSON 字符串。** @returns 返回错误日志内容的 JSON 字符串。*/static async getErrorJson(): Promise<string> {const errorFilePath = CrashUtil.getErrorFilePath();if (FileUtil.accessSync(errorFilePath)) {return await FileUtil.readText(errorFilePath);}return '';}/*** 将错误日志写入文件。** @param logContent 日志内容。*/private static writeErrorLog(logContent: string): void {const errorFilePath = CrashUtil.getErrorFilePath();try {CrashUtil.writeStr(errorFilePath, logContent);} catch (err) {LogUtil.error(`写入错误日志失败：${err}`);}}/*** 将数据写入文件，并关闭文件。** @param path 文件路径。* @param str 要写入的字符串。* @returns 返回写入的字节数。*/private static writeStr(path: string, str: string): number {const file = FileUtil.openSync(path);const offset = FileUtil.statSync(file.fd).size;try {const formattedStr = offset === 0 ? `[${str}]` : `,${str}`;const options: WriteOptions = { offset, encoding: 'utf-8' };return FileUtil.writeSync(file.fd, formattedStr, options);} finally {FileUtil.closeSync(file.fd); // 确保文件始终被关闭}}/*** 启用应用恢复功能（已过时）。* 推荐使用 `AppUtil.enableAppRecovery()`。*/static enableAppRecovery(restart: appRecovery.RestartFlag = appRecovery.RestartFlag.ALWAYS_RESTART,saveOccasion: appRecovery.SaveOccasionFlag = appRecovery.SaveOccasionFlag.SAVE_WHEN_ERROR,saveMode: appRecovery.SaveModeFlag = appRecovery.SaveModeFlag.SAVE_WITH_FILE): void {AppUtil.enableAppRecovery(restart, saveOccasion, saveMode);}/*** 重启应用（已过时）。* 推荐使用 `AppUtil.restartApp()`。*/static restartApp(): void {AppUtil.restartApp();}/*** 设置下次恢复主动拉起场景下的 Ability（已过时）。* 推荐使用 `AppUtil.setRestartWant()`。*/static setRestartWant(want: Want): void {AppUtil.setRestartWant(want);}/*** 保存当前 App 状态或主动保存 Ability 的状态（已过时）。* 推荐使用 `AppUtil.saveAppState()`。*/static saveAppState(context?: common.UIAbilityContext): boolean {return AppUtil.saveAppState(context);}
}代码如下：

import errorManager from '@ohos.app.ability.errorManager';
import { BusinessError } from '@kit.BasicServicesKit';
import { WriteOptions } from '@kit.CoreFileKit';
import { appRecovery, common, Want } from '@kit.AbilityKit';
import { DateUtil } from './DateUtil';
import { LogUtil } from './LogUtil';
import { FileUtil } from './FileUtil';
import { AppUtil } from './AppUtil';/*** 定义异常对象的接口。*/
interface ErrorObject {message?: string; // 错误消息code?: number; // 错误码details?: string; // 错误详情stack?: string; // 错误堆栈信息
}/*** 全局异常捕获与崩溃日志收集工具类。** @author 鸿蒙布道师* @since 2025/04/08*/
export class CrashUtil {private static observerId: number | undefined = undefined; // 错误观测器 IDprivate static errorFilePath: string | undefined = undefined; // 错误日志文件路径/*** 注册错误观测器。* 注册后可以捕获到应用产生的 JS Crash，应用崩溃时进程不会退出，并将异常信息写入本地文件。*/static onHandledException(): void {try {if (CrashUtil.observerId === undefined) {CrashUtil.observerId = errorManager.on('error', {/*** 捕获未处理的异常信息。** @param errMsg 异常信息。*/onUnhandledException(errMsg: string): void {const errStr = `${DateUtil.getTodayStr()} - 未处理异常：\n${errMsg}\n\n`;CrashUtil.writeErrorLog(errStr);},/*** 捕获异常对象。** @param errObject 异常对象。*/onException(errObject: Error | ErrorObject): void {const errStr = `${DateUtil.getTodayStr()} - 异常对象：\n${JSON.stringify(errObject)}\n\n`;CrashUtil.writeErrorLog(errStr);}});}} catch (err) {LogUtil.error(`注册错误观测器失败：${err}`);}}/*** 注销错误观测器。*/static onExceptionDestroy(): void {try {if (CrashUtil.observerId !== undefined) {errorManager.off('error', CrashUtil.observerId, (err: BusinessError) => {if (err) {LogUtil.error(`注销错误观测器失败：${JSON.stringify(err)}`);}});CrashUtil.observerId = undefined;}} catch (err) {LogUtil.error(`注销错误观测器时发生错误：${err}`);}}/*** 获取错误日志文件路径。** @returns 返回错误日志文件路径。*/static getErrorFilePath(): string {if (!CrashUtil.errorFilePath) {CrashUtil.errorFilePath = FileUtil.getFilesDirPath("harmony_utils_error_log", "ErrorLog.json");}return CrashUtil.errorFilePath;}/*** 读取错误日志文件的 JSON 字符串。** @returns 返回错误日志内容的 JSON 字符串。*/static async getErrorJson(): Promise<string> {const errorFilePath = CrashUtil.getErrorFilePath();if (FileUtil.accessSync(errorFilePath)) {return await FileUtil.readText(errorFilePath);}return '';}/*** 将错误日志写入文件。** @param logContent 日志内容。*/private static writeErrorLog(logContent: string): void {const errorFilePath = CrashUtil.getErrorFilePath();try {CrashUtil.writeStr(errorFilePath, logContent);} catch (err) {LogUtil.error(`写入错误日志失败：${err}`);}}/*** 将数据写入文件，并关闭文件。** @param path 文件路径。* @param str 要写入的字符串。* @returns 返回写入的字节数。*/private static writeStr(path: string, str: string): number {const file = FileUtil.openSync(path);const offset = FileUtil.statSync(file.fd).size;try {const formattedStr = offset === 0 ? `[${str}]` : `,${str}`;const options: WriteOptions = { offset, encoding: 'utf-8' };return FileUtil.writeSync(file.fd, formattedStr, options);} finally {FileUtil.closeSync(file.fd); // 确保文件始终被关闭}}/*** 启用应用恢复功能（已过时）。* 推荐使用 `AppUtil.enableAppRecovery()`。*/static enableAppRecovery(restart: appRecovery.RestartFlag = appRecovery.RestartFlag.ALWAYS_RESTART,saveOccasion: appRecovery.SaveOccasionFlag = appRecovery.SaveOccasionFlag.SAVE_WHEN_ERROR,saveMode: appRecovery.SaveModeFlag = appRecovery.SaveModeFlag.SAVE_WITH_FILE): void {AppUtil.enableAppRecovery(restart, saveOccasion, saveMode);}/*** 重启应用（已过时）。* 推荐使用 `AppUtil.restartApp()`。*/static restartApp(): void {AppUtil.restartApp();}/*** 设置下次恢复主动拉起场景下的 Ability（已过时）。* 推荐使用 `AppUtil.setRestartWant()`。*/static setRestartWant(want: Want): void {AppUtil.setRestartWant(want);}/*** 保存当前 App 状态或主动保存 Ability 的状态（已过时）。* 推荐使用 `AppUtil.saveAppState()`。*/static saveAppState(context?: common.UIAbilityContext): boolean {return AppUtil.saveAppState(context);}
}