验证文件上传

app.js

@@ -8,6 +8,7 @@ const {koaBody} = require('koa-body')//   支持form-data，支持文件，不
 
 const index = require('./routes/index')
 const users = require('./routes/users')
+const fileStorage = require('./routes/fileStorage')
 
 // error handler
 onerror(app)
@@ -46,6 +47,7 @@ app.use(koaBody({
 // routes
 app.use(index.routes(), index.allowedMethods())
 app.use(users.routes(), users.allowedMethods())
+app.use(fileStorage.routes(), fileStorage.allowedMethods())
 
 // error-handling
 app.on('error', (err, ctx) => {

routes/fileStorage.js

@@ -1,11 +1,59 @@
 const router = require('koa-router')()
+const fs = require('fs')
+    , crypto = require('crypto')
 
+
+//  全局路由
+router.prefix('/fileStorage')
 router.get('/', async (ctx, next) => {
     await ctx.render('index', {
         title: 'Hello Koa 2!'
     })
 })
 
+let readFileMd5 = (url) =>{
+    return new Promise((reslove) => {
+        let md5sum = crypto.createHash('md5');
+        let stream = fs.createReadStream(url);
+        stream.on('data', function(chunk) {
+            md5sum.update(chunk);
+        });
+        stream.on('end', function() {
+            let fileMd5 = md5sum.digest('hex');
+            reslove(fileMd5);
+        })
+    })
+}
+
+router.post('/putfile', async (ctx) => {
+    const arg = ctx.request.body
+    const file = ctx.request.files.file
+    if(file instanceof Array){
+        return ctx.body = {
+            message:'上传失败，不支持多文件。',
+            status:'error',
+        };
+    }else if(!file){
+        return ctx.body = {
+            message:'上传失败，文件不存在。',
+            status:'error',
+        };
+    }
+    const md5 = await readFileMd5(file.filepath)
+
+    // const file = ctx.request.files.file; // 获取上传文件
+    // const reader = fs.createReadStream(file.filepath); // 创建可读流
+    // const upStream = fs.createWriteStream('./StaticFile_Backup/' + ctx.request.body.dirname + '/' + ctx.request.body.key); // 创建可写流
+    // reader.pipe(upStream); // 可读流通过管道写入可写流
+    return ctx.body = {
+        message:'上传成功',
+        status:'ok',
+        data:{
+            md5
+        }
+    };
+});
+
 router.get('/string', async (ctx, next) => {
     ctx.body = 'koa2 string'
 })

systemConfig.js

@@ -0,0 +1,13 @@
+module.export = {
+    systemName:'rgvFileMD5Storage',
+    fileSavePath:'',
+    fileMaxSize:'',
+    database:{
+        host:'',
+        port:'',
+        user:'',
+        pass:'',
+        name:''
+    },
+
+}