通过hvigor构建脚本实现，打包时将时间写入到一个Json文件，保存到rawfile目录下，然后在APP中直接读取这个文件的内容即可。hvigorfile.ts文件内容：
import { appTasks } from '@ohos/hvigor-ohos-plugin';
import { hvigor } from '@ohos/hvigor';
import * as fileIo from 'fs';
import * as path from 'path';
// Callback function after node evaluation
hvigor.afterNodeEvaluate((hvigorNode) => {
// Ensure this directory exists
const resourcesDir = path.join(__dirname, 'entry/src/main/resources/rawfile');
if (!fileIo.existsSync(resourcesDir)) {
fileIo.mkdirSync(resourcesDir, { recursive: true });
}
// Write the build time into the JSON file
const now = new Date();
const buildTime = now.getFullYear() + '-'
+ String(now.getMonth() + 1).padStart(2, '0') + '-'
+ String(now.getDate()).padStart(2, '0') + ' '
+ String(now.getHours()).padStart(2, '0') + ':'
+ String(now.getMinutes()).padStart(2, '0') + ':'
+ String(now.getSeconds()).padStart(2, '0');
const buildInfo = { 'buildTime': buildTime };
fileIo.writeFileSync(
path.join(resourcesDir, 'build_info.json'),
JSON.stringify(buildInfo, null, 2)
);
})
export default {
system: appTasks, /* Built-in plugin of Hvigor. It cannot be modified. */
plugins: [] /* Custom plugin to extend the functionality of Hvigor. */
}