鸿蒙金融理财应用：运维监控、性能优化与安全加固

2.3 服务器监控实现

1. 服务器监控工具类

entry/src/main/ets/utils/ServerMonitoringUtil.ets

import server from '@ohos.server';

export class ServerMonitoringUtil {
  private static instance: ServerMonitoringUtil | null = null;
  private serverHelper: server.ServerHelper | null = null;

  static getInstance(): ServerMonitoringUtil {
    if (!ServerMonitoringUtil.instance) {
      ServerMonitoringUtil.instance = new ServerMonitoringUtil();
    }
    return ServerMonitoringUtil.instance;
  }

  async init(): Promise<void> {
    if (!this.serverHelper) {
      this.serverHelper = server.createServerHelper();
    }
  }

  async getServerResourceUsage(): Promise<server.ServerResourceUsage> {
    if (!this.serverHelper) {
      return null;
    }
    const result = await this.serverHelper.getServerResourceUsage();
    return result;
  }

  async monitorServerPerformance(): Promise<server.ServerPerformanceData> {
    if (!this.serverHelper) {
      return null;
    }
    const result = await this.serverHelper.monitorServerPerformance();
    return result;
  }
}

2. 服务器监控应用

entry/src/main/ets/pages/ServerMonitoringPage.ets

import { ServerMonitoringUtil } from '../utils/ServerMonitoringUtil';

@Entry
@Component
struct ServerMonitoringPage {
  @State serverResourceUsage: server.ServerResourceUsage | null = null;

  build() {
    Column({ space: 16 }) {
      Text('服务器监控').fontSize(18).fontWeight(FontWeight.Bold).textColor('#000000');
      if (this.serverResourceUsage) {
        Text(`CPU 使用率：${this.serverResourceUsage.cpuUsage}%`).fontSize(14).textColor('#000000');
        Text(`内存使用率：${this.serverResourceUsage.memoryUsage}%`).fontSize(14).textColor('#666666');
        Text(`磁盘使用率：${this.serverResourceUsage.diskUsage}%`).fontSize(14).textColor('#666666');
        Text(`网络带宽：${this.serverResourceUsage.networkBandwidth}MB/s`).fontSize(14).textColor('#666666');
      }
      ButtonComponent({ text: '监控服务器性能', onClick: async () => { await this.monitorServerPerformance(); }, disabled: false });
    }.width('100%').height('100%').padding(16).backgroundColor('#F5F5F5');
  }

  aboutToAppear() {
    ServerMonitoringUtil.getInstance().init();
    this.getServerResourceUsage();
  }

  async getServerResourceUsage(): Promise<void> {
    this.serverResourceUsage = await ServerMonitoringUtil.getInstance().getServerResourceUsage();
  }

  async monitorServerPerformance(): Promise<void> {
    const result = await ServerMonitoringUtil.getInstance().monitorServerPerformance();
    promptAction.showToast({ message: `服务器性能监控完成，响应时间：${result.responseTime}ms` });
  }
}

2.4 数据库监控实现

1. 数据库监控工具类

entry/src/main/ets/utils/DatabaseMonitoringUtil.ets

import database from '@ohos.database';

export class DatabaseMonitoringUtil {
  private static instance: DatabaseMonitoringUtil | null = null;
  private databaseHelper: database.DatabaseHelper | null = null;

  static getInstance(): DatabaseMonitoringUtil {
    if (!DatabaseMonitoringUtil.instance) {
      DatabaseMonitoringUtil.instance = new DatabaseMonitoringUtil();
    }
    return DatabaseMonitoringUtil.instance;
  }

  async init(): Promise<void> {
    if (!this.databaseHelper) {
      this.databaseHelper = database.createDatabaseHelper();
    }
  }

  async getDatabasePerformance(): Promise<database.DatabasePerformanceData> {
    if (!this.databaseHelper) {
      return null;
    }
    const result = await this.databaseHelper.getDatabasePerformance();
    return result;
  }

  async monitorDatabasePerformance(): Promise<database.DatabasePerformanceData> {
    if (!this.databaseHelper) {
      return null;
    }
    const result = await this.databaseHelper.monitorDatabasePerformance();
    return result;
  }
}

2. 数据库监控应用

entry/src/main/ets/pages/DatabaseMonitoringPage.ets

import { DatabaseMonitoringUtil } from '../utils/DatabaseMonitoringUtil';

@Entry
@Component
struct DatabaseMonitoringPage {
  @State databasePerformance: database.DatabasePerformanceData | null = null;

  build() {
    Column({ space: 16 }) {
      Text('数据库监控').fontSize(18).fontWeight(FontWeight.Bold).textColor('#000000');
      if (this.databasePerformance) {
        Text(`查询响应时间：${this.databasePerformance.queryResponseTime}ms`).fontSize(14).textColor('#000000');
        Text(`插入响应时间：${this.databasePerformance.insertResponseTime}ms`).fontSize(14).textColor('#666666');
        Text(`更新响应时间：${this.databasePerformance.updateResponseTime}ms`).fontSize(14).textColor('#666666');
        Text(`删除响应时间：${this.databasePerformance.deleteResponseTime}ms`).fontSize(14).textColor('#666666');
      }
      ButtonComponent({ text: '监控数据库性能', onClick: async () => { await this.monitorDatabasePerformance(); }, disabled: false });
    }.width('100%').height('100%').padding(16).backgroundColor('#F5F5F5');
  }

  aboutToAppear() {
    DatabaseMonitoringUtil.getInstance().init();
    this.getDatabasePerformance();
  }

  async getDatabasePerformance(): Promise<void> {
    this.databasePerformance = await DatabaseMonitoringUtil.getInstance().getDatabasePerformance();
  }

  async monitorDatabasePerformance(): Promise<void> {
    const result = await DatabaseMonitoringUtil.getInstance().monitorDatabasePerformance();
    promptAction.showToast({ message: `数据库性能监控完成，查询响应时间：${result.queryResponseTime}ms` });
  }
}

三、性能优化实战

3.1 实战目标

基于金融场景的性能优化要求，实现以下功能：

• 前端优化：优化前端的渲染性能；
• 后端优化：优化后端的响应性能；
• 数据库优化：优化数据库的查询性能。

3.2 前端优化实现

1. 前端优化工具类

entry/src/main/ets/utils/FrontendOptimizationUtil.ets

import optimization from '@ohos.optimization';

export class FrontendOptimizationUtil {
  private static instance: FrontendOptimizationUtil | null = null;
  private optimizationHelper: optimization.OptimizationHelper | null = null;

  static getInstance(): FrontendOptimizationUtil {
    if (!FrontendOptimizationUtil.instance) {
      FrontendOptimizationUtil.instance = new FrontendOptimizationUtil();
    }
    return FrontendOptimizationUtil.instance;
  }

  async init(): Promise<void> {
    if (!this.optimizationHelper) {
      this.optimizationHelper = optimization.createOptimizationHelper();
    }
  }

  async optimizeFrontendRendering(): Promise<optimization.FrontendRenderingOptimizationResult> {
    if (!this.optimizationHelper) {
      return null;
    }
    const result = await this.optimizationHelper.optimizeFrontendRendering();
    return result;
  }

  async optimizeFrontendNetworkRequests(): Promise<optimization.FrontendNetworkRequestsOptimizationResult> {
    if (!this.optimizationHelper) {
      return null;
    }
    const result = await this.optimizationHelper.optimizeFrontendNetworkRequests();
    return result;
  }
}

3.3 后端优化实现

1. 后端优化工具类

entry/src/main/ets/utils/BackendOptimizationUtil.ets

import optimization from '@ohos.optimization';

export class BackendOptimizationUtil {
  private static instance: BackendOptimizationUtil | null = null;
  private optimizationHelper: optimization.OptimizationHelper | null = null;

  static getInstance(): BackendOptimizationUtil {
    if (!BackendOptimizationUtil.instance) {
      BackendOptimizationUtil.instance = new BackendOptimizationUtil();
    }
    return BackendOptimizationUtil.instance;
  }

  async init(): Promise<void> {
    if (!this.optimizationHelper) {
      this.optimizationHelper = optimization.createOptimizationHelper();
    }
  }

  async optimizeBackendResponse(): Promise<optimization.BackendResponseOptimizationResult> {
    if (!this.optimizationHelper) {
      return null;
    }
    const result = await this.optimizationHelper.optimizeBackendResponse();
    return result;
  }

  async optimizeBackendNetworkRequests(): Promise<optimization.BackendNetworkRequestsOptimizationResult> {
    if (!this.optimizationHelper) {
      return null;
    }
    const result = await this.optimizationHelper.optimizeBackendNetworkRequests();
    return result;
  }
}

3.4 数据库优化实现

1. 数据库优化工具类

entry/src/main/ets/utils/DatabaseOptimizationUtil.ets

import optimization from '@ohos.optimization';

export class DatabaseOptimizationUtil {
  private static instance: DatabaseOptimizationUtil | null = null;
  private optimizationHelper: optimization.OptimizationHelper | null = null;

  static getInstance(): DatabaseOptimizationUtil {
    if (!DatabaseOptimizationUtil.instance) {
      DatabaseOptimizationUtil.instance = new DatabaseOptimizationUtil();
    }
    return DatabaseOptimizationUtil.instance;
  }

  async init(): Promise<void> {
    if (!this.optimizationHelper) {
      this.optimizationHelper = optimization.createOptimizationHelper();
    }
  }

  async optimizeDatabaseQueries(): Promise<optimization.DatabaseQueriesOptimizationResult> {
    if (!this.optimizationHelper) {
      return null;
    }
    const result = await this.optimizationHelper.optimizeDatabaseQueries();
    return result;
  }

  async optimizeDatabaseIndexes(): Promise<optimization.DatabaseIndexesOptimizationResult> {
    if (!this.optimizationHelper) {
      return null;
    }
    const result = await this.optimizationHelper.optimizeDatabaseIndexes();
    return result;
  }
}

四、安全加固实战

4.1 实战目标

基于金融场景的安全加固要求，实现以下功能：

• 代码加固：加固应用的代码；
• 数据加密：加密用户的敏感数据；
• 安全审计：记录用户的操作日志。

4.2 代码加固实现

1. 代码加固工具类

entry/src/main/ets/utils/CodeHardeningUtil.ets

import hardening from '@ohos.hardening';

export class CodeHardeningUtil {
  private static instance: CodeHardeningUtil | null = null;
  private hardeningHelper: hardening.HardeningHelper | null = null;

  static getInstance(): CodeHardeningUtil {
    if (!CodeHardeningUtil.instance) {
      CodeHardeningUtil.instance = new CodeHardeningUtil();
    }
    return CodeHardeningUtil.instance;
  }

  async init(): Promise<void> {
    if (!this.hardeningHelper) {
      this.hardeningHelper = hardening.createHardeningHelper();
    }
  }

  async HardenApplicationCode(): Promise<hardening.ApplicationCodeHardeningResult> {
    if (!this.hardeningHelper) {
      return null;
    }
    const result = await this.hardeningHelper.hardenApplicationCode();
    return result;
  }
}

4.3 数据加密实现

1. 数据加密工具类

entry/src/main/ets/utils/DataEncryptionUtil.ets

import encryption from '@ohos.encryption';

export class DataEncryptionUtil {
  private static instance: DataEncryptionUtil | null = null;
  private encryptionHelper: encryption.EncryptionHelper | null = null;

  static getInstance(): DataEncryptionUtil {
    if (!DataEncryptionUtil.instance) {
      DataEncryptionUtil.instance = new DataEncryptionUtil();
    }
    return DataEncryptionUtil.instance;
  }

  async init(): Promise<void> {
    if (!this.encryptionHelper) {
      this.encryptionHelper = encryption.createEncryptionHelper();
    }
  }

  async encryptUserSensitiveData(data: string): Promise<encryption.DataEncryptionResult> {
    if (!this.encryptionHelper) {
      return null;
    }
    const result = await this.encryptionHelper.encryptData(data);
    return result;
  }
}

4.4 安全审计实现

1. 安全审计工具类

entry/src/main/ets/utils/SecurityAuditUtil.ets

import audit from '@ohos.audit';

export class SecurityAuditUtil {
  private static instance: SecurityAuditUtil | null = null;
  private auditHelper: audit.AuditHelper | null = null;

  static getInstance(): SecurityAuditUtil {
    if (!SecurityAuditUtil.instance) {
      SecurityAuditUtil.instance = new SecurityAuditUtil();
    }
    return SecurityAuditUtil.instance;
  }

  async init(): Promise<void> {
    if (!this.auditHelper) {
      this.auditHelper = audit.createAuditHelper();
    }
  }

  async recordUserOperationLogs(logData: audit.OperationLogData): Promise<audit.UserOperationLogsResult> {
    if (!this.auditHelper) {
      return null;
    }
    const result = await this.auditHelper.recordUserOperationLogs(logData);
    return result;
  }
}

五、项目配置与部署

5.1 配置文件修改

在 entry/src/main/module.json5 中添加运维监控、性能优化、安全加固配置：

{
  "module": {
    "requestPermissions": [],
    "abilities": [],
    "widgets": [],
    "pages": []
  }
}

5.2 项目部署

1. 编译项目：在 DevEco Studio 中点击 Build → Build HAP，编译项目。
2. 部署到设备：将编译后的 HAP 文件部署到鸿蒙设备上。
3. 测试金融理财项目：在应用中查看各项监控、优化及加固效果。