express项目中集成log4j日志模块和officegen模块
npm install log4js –save
{
"appenders": {
"console": {
"type": "console"
},
"trace": {
"type": "file",
"filename": "log/access.log",
"maxLogSize ": 31457280
},
"http": {
"type": "logLevelFilter",
"appender": "trace",
"level": "trace",
"maxLevel": "trace"
},
"info": {
"type": "dateFile",
"filename": "log/app-info.log",
"pattern": ".yyyy-MM-dd",
"layout": {
"type": "pattern",
"pattern": "[%d{ISO8601}][%5p %z %c] %m"
},
"compress": true
},
"maxInfo": {
"type": "logLevelFilter",
"appender": "info",
"level": "debug",
"maxLevel": "info"
},
"error": {
"type": "dateFile",
"filename": "log/app-error.log",
"pattern": ".yyyy-MM-dd",
"layout": {
"type": "pattern",
"pattern": "[%d{ISO8601}][%5p %z %c] %m"
},
"compress": true
},
"minError": {
"type": "logLevelFilter",
"appender": "error",
"level": "error"
}
},
"categories": {
"default": {
"appenders": [
"console",
"http",
"maxInfo",
"minError"
],
"level": "all"
}
}
}
/**
* 功能： log4j日志管理
* 作者： dpc
* 日期： 2018/6/6.
*/
var log4js = require('log4js');
log4js.configure({
appenders: [{
type: 'console' // 控制台输出
}, {
type: 'dateFile', // 文件输出
filename: __dirname + './logs/access', // 需要手动创建此文件夹
pattern: "yyyy-MM-dd.log",
alwaysIncludePattern: true,
maxLogSize: 1024,
backups: 4, // 日志备份数量，大于该数则自动删除
category: 'logInfo' // 记录器名
}],
replaceConsole: true // 替换 console.log
});
levels = {
'trace': log4js.levels.TRACE,
'debug': log4js.levels.DEBUG,
'info': log4js.levels.INFO,
'warn': log4js.levels.WARN,
'error': log4js.levels.ERROR,
'fatal': log4js.levels.FATAL
};
exports.logger = function (name, level) {
var logger = log4js.getLogger(name);
logger.setLevel(levels[level] || levels['debug']);
return logger;
};
// 配合 express 使用的方法
exports.use = function (app, level) {
app.use(log4js.connectLogger(log4js.getLogger('logInfo'), {
level: levels[level] || levels['debug'],
format: ':method :url :status'
}));
};
//在需要使用的文件中引入配置
var logger = require('log4js').getLogger("index");
//在项目中使用log4j
app.get('/index', function(req,res){
logger.info('用户进入主页!测试日志等级info');
console.log("console log");
res.send("index");
logger.error('返回数据成功,测试日志等级error');
});
//安装officegen模块可能比较慢，用户访问某个链接后可以下载文件。
npm install officegen –save
//引入各个模块，fs模块支持文件处理，docx实例化文档，path进行文件路径处理
var officegen = require('officegen');
var fs = require('fs');
var docx = officegen ( 'docx' );
var path = require('path');
//可以通过officegen设置字体大小、颜色、位置等。
app.get('/doc', function(req,res){
logger.info('用户进入doc!测试日志等级info');
docx.on ( 'finalize', function ( written ) {
console.log ( 'Finish to create Word file.\nTotal bytes created: ' + written + '\n' );
});
docx.on ( 'error', function ( err ) {
console.log ( err );
});
var pObj = docx.createP ( { align: 'center' } );// 创建行 设置居中
pObj.addText ( '南昌市一中数据模拟考一', { bold: true,font_face: 'Arial', font_size: 18 });// 添加文字 设置字体样式 加粗 大小
var pObj = docx.createP ();
pObj.addText ( '考试时间120分钟 满分150分' );
var pObj = docx.createP ();
pObj.addText ( '第Ⅰ卷');
var pObj = docx.createP ();
pObj.addText ( '一、选择题（单选，每小题5分，共60分）', { color: '000088'} );
var pObj = docx.createP ();
pObj.addText ( '1. 设集合A＝｛3,5,6,8}，集合B＝｛4,5,7,8}，则A∩B等于( ) ' ,{ bold: true, underline: true } );
var pObj = docx.createP ();
pObj.addText ( 'A．｛3,4,5,6,7,8} B．｛3,6} C．｛4,7} D．｛5,8}' );
var pObj = docx.createP ();
pObj.options.align = 'right';
pObj.addText ( '1. 设集合A＝｛3,5,6,8}，集合B＝｛4,5,7,8}，则A∩B等于( ) ' );
var pObj = docx.createP ();
pObj.addLineBreak ();
pObj.addText ( 'A．｛3,4,5,6,7,8} B．｛3,6} C．｛4,7} D．｛5,8}' );
var pObj = docx.createP ();
var pObj = docx.createP ();
pObj.addText ( '1. 设集合A＝｛3,5,6,8}，集合B＝｛4,5,7,8}，则A∩B等于( ) ' );
var pObj = docx.createP ();
pObj.addText ( 'A．｛3,4,5,6,7,8} B．｛3,6} C．｛4,7} D．｛5,8}' ); var pObj = docx.createP ();
pObj.addText ( '1. 设集合A＝｛3,5,6,8}，集合B＝｛4,5,7,8}，则A∩B等于( ) ' );
var pObj = docx.createP ();
pObj.addText ( '这里进行officegen测试');
var pObj = docx.createP ();
pObj.addText ( '给officegen添加阴影部分' ,{ highlight: 'darkGreen' });
var pObj = docx.createP ( { align: 'center' } );// 创建行 设置居中
pObj.addText ( '设置字体样式和大小，给段落居中', { bold: true,font_face: 'Arial', font_size: 18 });// 添加文字 设置字体样式 加粗 大小
var pObj = docx.createP ();
//在doc文档中插入图片
pObj.addImage ( path.resolve(__dirname, 'images/image3.png' ) );
console.log("路径："+__dirname);
var pObj = docx.createP ();
//这里在段落中插入图片
pObj.addImage ( path.resolve(__dirname, 'images/sword_001.png' ) );
pObj.addImage ( path.resolve(__dirname, 'images/sword_002.png' ) );
pObj.addImage ( path.resolve(__dirname, 'images/sword_003.png' ) );
pObj.addText ( '... some text here ...', { font_face: 'Arial' } );
pObj.addImage ( path.resolve(__dirname, 'images/sword_004.png' ) );
var pObj = docx.createP ();
pObj.addImage ( path.resolve(__dirname, 'images/image1.png' ) );
docx.putPageBreak ();
var pObj = docx.createListOfNumbers ();
pObj.addText ( 'Option 1' );
var pObj = docx.createListOfNumbers ();
pObj.addText ( 'Option 2' );
pObj.addHorizontalLine ();
//给文档中插入表格
var table = [
[{
val: "No.",
opts: {
cellColWidth: 4261,
b:true,
sz: '48',
shd: {
fill: "7F7F7F",
themeFill: "text1",
"themeFillTint": "80"
},
fontFamily: "Avenir Book"
}
},{
val: "Title1",
opts: {
b:true,
color: "A00000",
align: "right",
shd: {
fill: "92CDDC",
themeFill: "text1",
"themeFillTint": "80"
}
}
},{
val: "Title2",
opts: {
align: "center",
cellColWidth: 42,
b:true,
sz: '48',
shd: {
fill: "92CDDC",
themeFill: "text1",
"themeFillTint": "80"
}
}
}],
[1,'这里插入表格',''],
[2,'这里插入表格.',''],
[3,'But when it is a matter of baobabs, that always means a catastrophe.',''],
[4,'watch out for the baobabs!','END'],
]
var tableStyle = {
tableColWidth: 4261,
tableSize: 24,
tableColor: "ada",
tableAlign: "left",
tableFontFamily: "Comic Sans MS"
}
var pObj = docx.createTable (table, tableStyle);
var out = fs.createWriteStream ( 'out.docx' );// 文件写入
out.on ( 'error', function ( err ) {
console.log ( err );
});
var result = docx.generate (out);// 服务端生成word
res.writeHead ( 200, {
// 注意这里的type设置，导出不同文件type值不同application/vnd.openxmlformats-officedocument.presentationml.presentation
"Content-Type": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
'Content-disposition': 'attachment; filename=out.docx'
});
docx.generate (res);// 客户端导出word
logger.error('返回数据成功doc,测试日志等级error');
});
//安装mock模块
npm install mockjs -save
//在需要使用的页面引用
var Mock = require('mockjs');
* 随机数进行配置时间等
* 可以生成测试图片，图片可以设置大小、颜色、文字等
* 可以返回boolean、object、array等
//使用代码
app.get('/mock', function(req,res){
//声明一个随机生成函数
var Random = Mock.Random;
res.json(Mock.mock({
"fixed":"这是固定好的数字",
"string|3": "★★★",
"image":Random.image('900x200', '#50B347', '#FFF', 'Mock.js'), //模拟发送图片，可以控制普片颜色，图片大小，文字
"data":Random.date('yyyy-MM-dd'), //模拟时间 可以发送各种格式时间
"text":'@paragraph', //模拟发送段落， 可以控制长度
"sentence":Mock.mock('@sentence(5)'), //模拟发送五个词的句子
"word":Mock.mock('@word'), //模拟发送单词
"title":Mock.mock('@title(5)'), //模拟发送标题
"cParagraph":Mock.mock('@cparagraph(8)'), //模拟发送中文段落
"cSentence": Mock.mock('@csentence()'), //模拟发送中文句子
"cWord":Mock.mock('@cword("零一二三四五六七八九十")'), //模拟一个中文词语
"cTitle": Mock.mock('@ctitle(5)'), //模拟中文标题
"cName": Mock.mock('@cname'), //模拟用户姓名，可以单独模拟姓、也可以模拟名
"cEmail":Mock.mock('@email'), //模拟邮箱
"cAddress":Mock.mock('@county(true)'), //模拟地址
"number":Mock.mock('@increment(100)'), //模拟比一百大的数组
"sectionNumber|1-100": 100, //模拟1到100的随机数
"boolean|1": true, //模拟boolean类型数据
"objects|2": { //模拟返回两个对象数组
"310000": "上海市",
"320000": "江苏省",
"330000": "浙江省",
"340000": "安徽省"
},
"array|1": [ //模拟返回数组类型数据，从数组中取出随机数
"AMD",
"CMD",
"UMD"
]
}));
}
);
lodash是Node.js工具类模块，具体用法在使用过程中才考API
npm install bluebird -save
//三个Promise按照顺序执行，读取txt中的内容
//promise使用，让异步执行更加简单,按照顺序读取文件内容
app.get('/promise', function(req,res){
var test1 = function(cfg){
return new Promise(function(resolve, reject){
fs.readFile(cfg, "utf-8", function(err, data){
if(err){
reject(err);
} else {
// console.log("test1: ".concat(data));
resolve(data.trim());
}
});
});
};
var test2 = function(cfg){
return new Promise(function(resolve, reject){
fs.readFile(cfg, "utf-8", function(err, data){
if(err){
reject(err);
} else {
// console.log("test2: ".concat(data));
resolve(data.trim());
}
});
});
};
var test3 = function(cfg){
return new Promise(function(resolve, reject){
fs.readFile(cfg, "utf-8", function(err, data){
if(err){
reject(err);
} else {
//console.log("test3: ".concat(data));
resolve(data.trim());
}
});
});
};
test1(txt1)
.then(function(data){
console.log("test1"+data);
return test2(txt2)
})
.then(function(data){
console.log("test2"+data);
return test3(txt3)
})
.then(function(data){
console.log("test3"+data);
res.send("success");
})
.catch(function(err){
console.log(err.message);
});
});
//将异步promise精简成一个函数，这里试用promiseall方法，异步读取项目根目录下三个文件操作。处理三个异步相互无关的操作
app.get('/promise_all', function(req,res){
function createPromise(cfg){
return new Promise(function(resolve, reject){
fs.readFile(cfg, "utf-8", function(err, data){
if(err){
reject(err);
} else {
console.log("test1: ".concat(data));
resolve(data.trim());
}
});
});
}
Promise.all([createPromise(txt1),createPromise(txt2),createPromise(txt3)]).then(function(data){
console.log("执行成功,结果如下：");
let [data1,data2,data3]=data;
console.log(data1);
console.log(data2);
console.log(data3);
res.send("success");
},function(){
console.log("至少一个执行失败")
});
});
//promise异步处理是有相互影响的操作，前面执行的方法是后面函数 执行的参数
app.get('/promise_parm', function(req,res){
// 读取数据1
function readTxt1(cfg){
return new Promise(function(resolve,reject){
fs.readFile(cfg, "utf-8", function(err, data){
if(err){
reject(err);
} else {
console.log("test1: ".concat(data));
resolve(data.trim());
}
});
});
}
//读取数据2
function readTxt2(cfg){
return new Promise(function(resolve,reject){
fs.readFile(cfg, "utf-8", function(err, data){
if(err){
reject(err);
} else {
console.log("test2: ".concat(data));
resolve(data.trim());
}
});
});
}
//读取数据3
function readTxt3(cfg){
return new Promise(function(resolve,reject){
fs.readFile(cfg, "utf-8", function(err, data){
if(err){
reject(err);
} else {
// console.log("test2: ".concat(data));
resolve(data.trim());
}
});
});
}
//promist 异步处理,第一个promise的结果，是第二个promise处理请求函数的参数
readTxt1("txt1.txt")
.then(function(data){
//console.log(data);
return readTxt2(data)
})
.then(function(data2){
return readTxt3(data2)
})
.then(function(data3){
console.log("jieguo:"+data3);
res.send("test");
})
});
一、multer、fs、path模块安装（参考 https://github.com/dpc761218914/multer-express.js）
npm install multer fs path -save
#####二、使用配置
//引入相关依赖
var path = require('path');
var multer = require('multer');
var fs = require('fs');
//创建文件夹工具方法
var createFolder = function(folder){
try{
fs.accessSync(folder);
}catch(e){
fs.mkdirSync(folder);
}
};
//自定义新建文件夹路径
var uploadFolder = 'public/uploads/user';
createFolder(uploadFolder);
//配置上传路径和上传文件名
// file upload destination folder
var storage = multer.diskStorage({
destination: function(req, file, cb) {
cb(null, uploadFolder);
},
// file upload extension
filename: function(req, file, cb) {
cb(null, Date.now() + path.extname(file.originalname));
}
});
// file upload variable
var upload = multer({
storage: storage
});
#####三、使用
//其中req.body是获取用户表单数据
// 上传单个文件
app.post('/api_single', upload.single('photo'), function(req, res, next) {
console.log('文件名=='+req.file.filename);
var profile = new Profile({
title: req.body.title,
description: req.body.description,
photo: req.file.filename,
});
console.log('文件类型：%s', req.file.mimetype);
console.log('原始文件名：%s',req.file.originalname);
console.log('文件大小：%s', req.file.size);
console.log(req.file);
console.log(req.body);
profile.save(function(err, data) {
if (err) {
return next(err);
}
console.log(data);
res.redirect('/');
});
});
//上传多个文件
app.post('/api', upload.array('photo',2), function(req, res, next) {
console.log('文件名=='+req.files[0].filename);
var profile = new Profile({
title: req.body.title,
description: req.body.description,
photo: req.files[0].filename,
});
console.log(req.file);
console.log(req.body);
profile.save(function(err, data) {
if (err) {
return next(err);
}
console.log(data);
res.redirect('/');
});
});
#####三、前端调用
//前端表单
<div class="container">
<div class="row justify-content-center">
<div class="col col-md-6">
<form method="post" enctype="multipart/form-data" action="/api">
<div class="form-group">
<label for="title">Title</label>
<input type="text" class="form-control" name="title" placeholder="Enter title" required>
</div>
<div class="form-group">
<label for="title">Description</label>
<input type="text" class="form-control" name="description" placeholder="Enter description">
</div>
<div class="form-group">
<label for="photo">Photo</label>
<input type="file" class="form-control-file" name="photo">
<input type="file" class="form-control-file" name="photo">
</div>
<button type="submit" class="btn btn-outline-info">Submit</button>
</form>
</div>
</div>
</div>
//也可以对input的文件类型进行限制（例如这里限制图片文件）
<input type="file" accept="image/png,image/jpg,image/jpeg,image/gif" class="form-control-file" name="photo">
#权限控制（用户的权限数组和该条路由的权限数组相比较，如果存在交集，就有权限，不存在交集就没有权限）
var arr1=[1,2,3];
var arr2=[4,5];
var arr3 = arr2.filter(function(v){
return arr1.indexOf(v)!==-1 // 利用filter方法来遍历是否有相同的元素
})
if(arr3.length==0){
//没有权限
console.log("无权限");
}else{
console.log("存在权限");
}