最近在做uniapp的项目，由于项目场景比较复杂，在处理售后问题的时候发现仅通过后端请求日志无法满足需求，于是便开始写一个前端保存操作日志的方法。
一、使用方法：
1、全局引入（main.js）
import {LogCat} from './utils/LogCat.js'
Vue.prototype.$LogCat = LogCat
2、初始化日志存储路径（App.vue）
onLaunch: function() {
this.$LogCat.init()
}
3、参数
调用this.$LogCat.d(tag,msg)方法
参数说明数据类型默认值tag日志标签，默认会在标签后面追加“：”stringmsg日志内容string、object、array''
4、Vue文件中使用
methods:{
handleClick() {
let data = {
name:'张三',
age:18
}
this.$LogCat.d('点击了',data) //2023-04-20 14:15:30 点击了：{name:'张三',age:18}
}
}
二、JS代码如下：
export const LogCat = {
main: plus.android.runtimeMainActivity(),
Environment: plus.android.importClass('android.os.Environment'),
BufferedWriter: plus.android.importClass('java.io.BufferedWriter'),
File: plus.android.importClass('java.io.File'),
FileOutputStream: plus.android.importClass('java.io.FileOutputStream'),
OutputStreamWriter: plus.android.importClass('java.io.OutputStreamWriter'),
LogPath: '', //日志存储目录
saveDays: 7, //日志最大存储天数
init: function() {
if (this.Environment.MEDIA_MOUNTED || !this.Environment.isExternalStorageRemovable()) {
this.LogPath = this.main.getExternalFilesDir(null).getPath();
} else {
this.LogPath = this.main.getFilesDir().getPath();
}
let fileManager = new this.File(this.LogPath);
let files = fileManager.listFiles()
let now = new Date();
let maxSavedDay = utils.getFormatDate(now - this.saveDays * 24 * 60 * 60 * 1000)
// 遍历目录下的日志文件,并删除日志最大存储天数前的日志
for (var i in files) {
let name = files[i].getName().split('.')[0],
time = name.split('_')[1]
if (time <= maxSavedDay && name.search('log_') == 0) {
files[i].delete()
}
}
console.log('LogPath->', this.LogPath);
},
d: function(tag, msg = '') {
let now = new Date();
let date = utils.getFormatDate(now);
let datetime = utils.getFormatDateTime(now);
msg = (typeof msg !== 'string' ? JSON.stringify(msg) : msg);
//文件名
let fileName = this.LogPath + "/log_" + date + ".txt"
//写入的内容
let content = `\n${datetime} ${tag}${msg ? ':'+msg : msg}\n`;
let file = new this.File(this.LogPath);
if (!file.exists()) {
file.mkdirs(); //创建父路径
}
let fos = null;
let bw = null;
try {
fos = new this.FileOutputStream(fileName, true);
bw = new this.BufferedWriter(new this.OutputStreamWriter(fos));
//bw.write(log);
bw.append(content);
} catch (e) {
console.log('e->', e);
} finally {
try {
if (bw != null) {
bw.close(); //关闭缓冲流
fos.close(); //关闭文件输出流
}
} catch (closeEx) {
console.log('closeEx->', closeEx);
}
}
}
}
export const utils = {
getFormatDate: (dateString) => {
const date = new Date(dateString);
let year = date.getFullYear();
let month = date.getMonth() + 1;
let day = date.getDate();
month = month > 9 ? month : '0' + month;;
day = day > 9 ? day : '0' + day;
return `${year}-${month}-${day}`;
},
getFormatDateTime: (dateString) => {
const date = new Date(dateString);
let year = date.getFullYear();
let month = date.getMonth() + 1;
let day = date.getDate();
let hour = date.getHours();
let min = date.getMinutes();
let second = date.getSeconds();
month = month > 9 ? month : '0' + month;;
day = day > 9 ? day : '0' + day;
hour = hour > 9 ? hour : '0' + hour;
min = min > 9 ? min : '0' + min;
second = second > 9 ? second : '0' + second;
return `${year}-${month}-${day} ${hour}:${min}:${second}`;
}
}
三、说明
默认配置了日志最大存储时间（saveDays）为7天，可自行修改
四、文章参考
https://ext.dcloud.net.cn/plugin?id=1816
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