鍍金池/ 問(wèn)答/ 網(wǎng)絡(luò)安全問(wèn)答
囍槑 回答

涉及文件上傳,你可以再搭建一個(gè)文件管理服務(wù)器,兩個(gè)tomcat把文件都上傳至文件管理服務(wù)器

若相惜 回答

大兄弟,你這問(wèn)題解決了嗎,能否給個(gè)方案

涼薄 回答

如果有模板引擎就直接用就可以了?。咳绻麤](méi)有用接口返回那個(gè)js的地址,然后用$.getScript引入

北城荒 回答

加密就是加密,不是防止別人刷接口的,刷接口可以用控頻來(lái)進(jìn)行限制;

不將就 回答

這句話(huà)出自<<深入理解Java虛擬機(jī)>>第二版,你需要看完這本書(shū)的垃圾收集算法,才知道為什么.簡(jiǎn)單的說(shuō)你錯(cuò)在哪呢,如果新生代所有的對(duì)象都在鏈上不可回收呢?

確定哪些對(duì)象可以回收通常有兩種算法,一種是引用計(jì)數(shù),一種是可達(dá)性分析算法.HotSpot采用的就是第二種.第二種會(huì)通過(guò)一些稱(chēng)為GC Root的對(duì)象.可作為GC Roots的對(duì)象包括下面幾種:

  • 虛擬機(jī)棧(棧幀中的本地變量表)中引用的對(duì)象。
  • 方法區(qū)中類(lèi)靜態(tài)屬性引用的對(duì)象
  • 方法區(qū)中常量引用的對(duì)象。
  • 本地方法棧中JNI(即一般說(shuō)的Native方法)引用的對(duì)象

這些引用會(huì)形成一條鏈,凡是在鏈上的說(shuō)明還在使用,不可回收.

深記你 回答

圖片描述

這里應(yīng)該要選擇一下保存的時(shí)候,不然光設(shè)置charset沒(méi)用的

魚(yú)梓 回答

你這也太搞了吧
你的url參數(shù)是js的
@Url.Action是服務(wù)端的方法。你告訴我怎么用。。。。。。。

柒槿年 回答

一般來(lái)說(shuō),私鑰不只有d和n這兩個(gè)參數(shù),而是由n、e、d、p、q、dP、dQ、qInv這8個(gè)參數(shù)構(gòu)成,參閱RSAPrivateCrtKeySpec。

殘淚 回答

使用

let formData = new FormData();
                formData.append('files', filePart);
                formData.append('chunk', index.toString());

給服務(wù)端傳參,并且對(duì)文件進(jìn)行分割操作。
注意:谷歌瀏覽器不需要設(shè)置content-type,否則后端會(huì)拿不到數(shù)據(jù)

夏木 回答

VMT is implementation dependent, so topics should be limited to compilers implementations rather than c++ itself.

那么虛表是在什么時(shí)候生成的呢. 是在構(gòu)造函數(shù)執(zhí)行之前還是在構(gòu)造函數(shù)之后之后呢?

For Most compilers, virtual table pointer initializes __vptr at constructor's initializer list.


而且虛表存放在哪里呢?

What confuses you is where __vptr is(not VMT, because VMT just consists of the addresses of trivial non-virtual functions which can be invoked by __vptr), then:

Compilers have multiple choices(all as a hidden member), you can refer to here

Summary: Where is the __vptr stored in an object (first or last are the usual answers).

Of course, you can implement VMT with c, then you will not ask such questions.

BTW, this is not good (even is a bad) question, because you even haven't searched it on google before asking, so -1.

Update:

Wikipedia is also your friend.

局外人 回答

發(fā)現(xiàn)問(wèn)題了,Grok Debugger就是個(gè)坑?。?!在里面 \r\n 非要寫(xiě)成 \\r\\n 才可以正確過(guò)濾 可實(shí)際上就應(yīng)該寫(xiě)成 \r\n

你的type是一個(gè)字符串,不是函數(shù)吧

詆毀你 回答

找了一些內(nèi)容來(lái):

3.14內(nèi)核新增了一個(gè)內(nèi)存信息MemAvailable , 當(dāng)調(diào)用free命令時(shí)可以顯示為available
之前沒(méi)留意過(guò)

[root@VM_167_46_centos etc]# free -h
                         total         used             free      shared     buff/cache      available
Mem:           993M        253M        334M         39M               405M             556M
Swap:           2.0G          82M             1.9G

我們知道used + free + buff 基本等于 total

  • used是被使用的
  • free是完全沒(méi)有被使用的
  • shared是被程序之間可以(已經(jīng)被)共享使用的
  • buffers是指用來(lái)給塊設(shè)備做的緩沖大小,它只記錄文件系統(tǒng)的metadata以及 tracking in-flight pages
  • cached是用來(lái)給文件做緩沖

也就是 buffers是用來(lái)存儲(chǔ)目錄里面有什么內(nèi)容,權(quán)限等等。而cached直接用來(lái)緩存我們打開(kāi)的文件
available到底是什么

Many load balancing and workload placing programs check /proc/meminfo to estimate how much free memory is available. They generally do this by adding up "free" and "cached", which was fine ten years ago, but is pretty much guaranteed to be wrong today.
It is wrong because Cached includes memory that is not freeable as page cache, for example shared memory segments, tmpfs, and ramfs, and it does not include reclaimable slab memory, which can take up a large fraction of system memory on mostly idle systems with lots of files.Currently, the amount of memory that is available for a new workload,without pushing the system into swap, can be estimated from MemFree, Active(file), Inactive(file), and SReclaimable, as well as the "low"watermarks from /proc/zoneinfo.However, this may change in the future, and user space really should not be expected to know kernel internals to come up with an estimate for the amount of free memory.It is more convenient to provide such an estimate in /proc/meminfo. If things change in the future, we only have to change it in one place.

也就是說(shuō)available才是你的"可用內(nèi)存" , 而不是像過(guò)去那樣簡(jiǎn)單的把free和buffer加起來(lái)

available 小于 free+buffer 是一定的了

故人嘆 回答

遇到同樣的問(wèn)題,需要導(dǎo)入iview以及table的樣式才能顯示正常,node_modules/iview/dist/styles/iview.css

我用的print.js 第三方
現(xiàn)在我在研究如何導(dǎo)入table的樣式,現(xiàn)在的想法是把table的less文件轉(zhuǎn)化為css文件,然后引入,不知道是否可行,如有進(jìn)展 及時(shí)聯(lián)系,謝謝

附上代碼

        this.printLoading = true
        setTimeout(() => {
          PrintJS({
            printable: this.pageId,
            documentTitle: '詳情',
            type: 'html',
            targetStyle: ['*'],
            ignoreElements: [this.actionId],
            maxWidth: 1200,
            css: ['../../../node_modules/iview/dist/styles/iview.css'],
            style: '.main-head {font-size: 16px;font-weight: bold;color: #464c5b}',
            onLoadingEnd: () => {
              this.printLoading = false
            }
          })
        }, 300)