移动代理和网络爬虫之间的区别
有人可以告诉我移动代理和网络爬虫之间的确切区别吗？
提前致谢。
Can someone tell me the exact difference between mobile agents and web crawlers?
Thanks in advance.
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虽然这个问题很老了，但我想澄清一下 purushottam 所说的内容。
移动代理是一个正在运行的程序（代码和数据）
在网络中从一台计算机跳跃（迁移）到另一台计算机，代表某人执行任务并最终返回结果。例如，它们可用于在组织内的计算机上安装和维护软件，或比较多个供应商的产品价格
通过访问每个供应商的站点并执行一系列数据库操作。
移动代理对资源的潜在安全威胁
他们访问的计算机。所以接收代理的环境应该决定
应该允许使用哪些本地资源，例如，基于代理所代表的用户的身份。此外，移动代理本身也很容易受到攻击，因为如果他们无法访问所需的信息，他们可能无法完成任务。
另一方面，网络爬虫不会从一台计算机跳到另一台计算机。相反，它会悄悄地“浏览”（扫描）网络，“读取”它找到的所有内容，并以一种能够更快地响应搜索请求的方式对其“读取”的所有内容进行索引。
Although this question is old, I'd like to elucidate on what purushottam has said.
A mobile agent is a running program (both code and data) that
hops (migrates) from one computer to another in a network carrying out a task on someone’s behalf and eventually returning with the results. They might be used, for instance, to install and maintain software on the computers within an organization or to compare the prices of products from a number of vendors
by visiting each vendor’s site and performing a series of database operations.
Mobile agents are a potential security threat to the resources in
computers that they visit. So the environment receiving an agent should decide
which of the local resources it should be allowed to use, based, say, on the identity of the user on whose behalf the agent is acting. In addition, mobile agents can themselves be vulnerable as they may not be able to complete their task if they are refused access to the information they need.
A web crawler on the other hand does not hop from one computer to another. Rather it quietly "browses" (scans) the web, "reading" everything it finds and indexing all it has "read" in a way that that enables it respond to search requests faster.
移动代理是针对移动设备的代理字符串类别，请参阅
http://en.wikipedia .org/wiki/List_of_user_agents_for_mobile_phones
网络爬虫是由不同程序（例如搜索引擎）用于索引页面的机器人程序...
http://en.wikipedia.org/wiki/WebCrawler
就像谷歌的爬虫代理字符串之一是
"DoCoMo/1.0/P502i/c10 (Google CHTML Proxy/1.0) ”属于
“Google (216.239.39.x) 代理服务器”这是代理字符串的完整列表，包括爬虫、蜘蛛...
http://www.user-agents.org/
编辑
按照您的要求...
查看是否有人访问您的网站并检查他的用户代理。如果他使用的是 Firefox，您将获得一个字符串，如果他使用的是 iPhone 等移动设备，那么您将获得安装在移动设备上的浏览器的用户代理。如果访问者是爬虫，那么您将获得用户代理字符串，同样......
Mobile Agent is a category of Agent Strings that are ment for Mobile Devices have a lok at
http://en.wikipedia.org/wiki/List_of_user_agents_for_mobile_phones
Where as web crawlers are Robot programs that are used by different programs like Search engines for indexing pages...
http://en.wikipedia.org/wiki/WebCrawler
Like one of google's crawler Agent String is
"DoCoMo/1.0/P502i/c10 (Google CHTML Proxy/1.0)"which belong to
"Google (216.239.39.x) proxy server "Here is a complete list of Agent strings Including Crawlers,Spiders...
http://www.user-agents.org/
Edit
As u requested...
See if someone visits your site and you check his User-Agent. If he is using a Firefox, you will get a string for that, if he is using A mobile Device like an iPhone then u get the user-Agent of the Browser installed on the Mobile. If the visitor is a Crawler then u get the user-Agent String For the same...
如果我没记错的话，移动代理不必然意味着他们必须使用移动设备做一些事情。移动代理是一种特殊类型的代理代码，其设计方式本质上是移动的。
我认为 Shekhar 已经为您提供了移动设备用户代理的答案，从技术上讲，这不是移动代理，而是移动代理。
您可以此处进行澄清
If I am not wrong, Mobile Agents DONOT necessarily mean that they have to do something with Mobile Devices. Mobile Agents are a special type of agent-codes, that are designed in such a way that they are Mobile in nature.
I think Shekhar has given you an answer for User Agents for Mobile devices, which technically are not Mobile Agents, but Agents for Mobiles.
You can clarify here