表妹求我写个node脚本,把java错误码表转成excel并翻译成英文

java原始代码部分如下

public static final int ERR_ONLINE_DECLINED             = 1025;    //交易联机拒绝
    //public static final int	ERR_RESELECT_APP			= 1026;	//GPO返回0x6985,重新选择应用
    public static final int ERR_OFFLINE_APPROVED            = 1027;    //交易脱机批准

需要得到的excel结果

最终采用node配合以上插件来完成，将java代码中的相关数据采集出来.

1、先安装插件

npm install node-xlsx
npm install line-reader
npm install http
npm install md5-node

2、在百度翻译api上注册一个账号 领取免费使用额度

https://ai.baidu.com/ai-doc/MT/ykqq95r2y

本来是打算用谷歌的，但最近发现谷歌的都不能访问了，知道的大佬可以告知。

注册申请了之后可以得到一个appid和对应的秘钥。

正常使用会返回翻译的结果数据如下

{
	"from": "en",
	"to": "zh",
	"trans_result": [{
		"src": "apple",
		"dst": "\u82f9\u679c" //苹果
	}]
}

3、接着编写完整node代码

//生成Excel依赖包
var xlsx = require('node-xlsx')
//写入文件依赖包
var fs = require('fs')
//一行一行读取
var lineReader = require('line-reader');
//网络请求
var http = require('http');
//md5加密
var md5 = require('md5-node');


var sheetList = []

var listCount = 0;

lineReaderTxt()


//将java文件代码的每一行读取
async function lineReaderTxt() {
	sheetList.push(['状态码', "状态值", "结果", "是否使用中", "代码行数来源"])
	var lineList = []
	var lineCount = 0
	lineReader.eachLine('PostCode.java', function(line, last) {
		lineCount += 1
		if (line.indexOf('//public static final int') != -1) {
			lineList.push(line)
		} else if (line.indexOf('public static final int') != -1) {
			lineList.push(line)
		}
		if (last) {
			console.log('最后一行了:', lineCount);
			const used = process.memoryUsage().heapUsed / 1024 / 1024;
			console.log(`The script uses approximately ${Math.round(used * 100) / 100} MB`);
			loopList(lineList)
		}
	});
}


function loopList(lineList) {
	var successCount = 0
	console.log("开始新的循环", lineList.length)
	var lineCount = 0
	lineList.forEach((line, index) => {
		if (line.indexOf('//public static final int') != -1) {
			lineCount += 1
			translateOneJavaLine(line, false, lineCount, index == (lineList.length - 1), (item) => {
				successCount += 1
				console.log("successCount1:" + successCount, "lineList:" + lineList.length)
			})
		} else if (line.indexOf('public static final int') != -1) {
			lineCount += 1
			translateOneJavaLine(line, true, lineCount, index == (lineList.length - 1), (item) => {
				successCount += 1
				console.log("successCount2:" + successCount, "lineList:" + lineList.length)
			})
		}
		if (successCount == lineList.length) {
			writeDataToExcel()
		}
	})
}


//讲数据写入excel
function writeDataToExcel() {
	console.log('写入excel前的校验', sheetList.length, listCount)
	//配置，设置列宽
	const options = {
		'!cols': [{
			wch: 30
		}, {
			wch: 10
		}, {
			wch: 50
		}, {
			wch: 20
		}, {
			wch: 20
		}]
	};
	//生成二进制数据流
	var buffer = xlsx.build([{
		name: "test",
		data: sheetList
	}], options);
	//写入文件
	fs.appendFile('./test13.xlsx', buffer, function(err) {
		if (err) {
			console.log(err, '保存excel出错')
		} else {
			console.log('写入excel成功!!!')
		}
	})
}

//提取并翻译一行的数据
function translateOneJavaLine(line, isUsed, lineNum, isLast, callback) {
	if (line.indexOf("=") != -1) {
		var itemList = []
		//校验是否有 = 符号
		var lis = line.split('=')
		const errorDaihao = lis[0].split('final int')[1].replace(/(^\s*)|(\s*$)/g, "")
		// console.log('输出的状态', errorDaihao)
		itemList.push(errorDaihao)
		const second = lis[1]
		const errorCode = second.split(';')[0].replace(/(^\s*)|(\s*$)/g, "")
		// console.log('输出的状态码', errorCode)
		itemList.push(errorCode)
		const seconds = lis[1].split(';')
		if (seconds.length > 1) {
			if (seconds[1].indexOf('//') != -1) {
				const translateSrc = seconds[1].split('//')[1].replace(/(^\s*)|(\s*$)/g, "")
				itemList.push(`${translateSrc}`)
				itemList.push(isUsed ? '是' : '否')
				itemList.push(`${lineNum}`)
				sheetList.push(itemList)
				callback(itemList)
			} else {
				itemList.push('nothing')
				itemList.push(isUsed ? '是' : '否')
				itemList.push(`${lineNum}`)
				sheetList.push(itemList)
				callback(itemList)
			}
		}
	}
}


//将中文翻译成引文 使用百度api
async function translateChineseToEnglish(keyword1) {
	var keyword = encodeURI(keyword1)
	// console.log('需要查询的数据', keyword)
	const appid = '20111008000339947'
	const secretKey = 'FGsDn1G62CdqyWVyFXQm'
	const randomStr = '1435660288'
	var params1 = `${appid}${keyword1}${randomStr}${secretKey}`
	var params2 = md5(params1)
	const baiduHost = 'http://api.fanyi.baidu.com/api/trans/vip/translate'
	let url =
		`${baiduHost}?q=${keyword}&from=zh&to=en&appid=${appid}&salt=${randomStr}&sign=${params2}`
	return new Promise((resolve) => {
		http.get(url, function(res) {
			res.setEncoding('utf8');
			var body = "";
			res.on('data', function(chunk) {
				body += chunk;
			}).on('end', function() {
				var obj = JSON.parse(body)
				if (obj.trans_result && obj.trans_result.length > 0) {
					const result = obj.trans_result[0].dst
					// console.log('翻译的结果是', result)
					resolve(result)
				}
			});
		}).on('error', function(e) {
			console.log('请求报错', JSON.stringify(e))
		})
	})
}

4、执行node脚本，输出excel

5、写完收工 向表妹交差