Http status: What is the difference between 301 and 302 jumps? What are the benefits or problems when using it?

What is the difference between 301 jump and 302 jump? The following article will help you compare 301 and 302 jumps, talk about their differences, and what are the benefits or problems when using these two transfers. I hope it will be helpful to you!

What is the difference between 301 and 302 Http status?

301, 302 are both HTTP status codes, and both represent that a certain URL has been transferred. The difference is: 301 redirect: 301 represents Permanently Moved, 302 redirect: 302 represents Temporarily Moved. Of course, HTTP status 200 indicates that no problem has occurred.

What are the benefits or problems when using these two transfers?

301 redirection is the best way to be friendly to search engines after the webpage changes its address. As long as it is not a temporary move, it is recommended to use 301 for redirection. 302 redirects are temporary transfers.

In the past few years, many Black Hat SEOs have widely used this technology to cheat. At present, all major search engines have stepped up their crackdowns, such as Google's attack on Business.com in the past few years and BMW's recent attack. German website penalties. Even if a website is not spam objectively, it can easily be misjudged as spam by search engines and punished.

Anyone who studies search engine optimization (SEO) should all know that 301 and 302 can have good results if used improperly or flexibly. For example, see the following article:

• 302 redirection and URL hijacking

• 301 redirection and URL normalization

• 301 Redirect Implementation Method

• 301 redirect code provided by 51window

• Redirect experience of more than a dozen domain names on a website

• Several commonly used 301 redirects

If you are an operation and maintenance personnel, you can configure some settings of the WEB server to achieve the jump, such as the following articles about IIS redirection

• Redirect requests to files and directories Or program (IIS 6.0)

  http://www.microsoft.com/technet/prodtechnol/windowsserver2003/zh-chs/library/iis/fbcccfce-6695-4f92-bd55-869d85ff49fb.mspx?mfr= true

• Redirect Reference (IIS 6.0)

  http://www.microsoft.com/technet/prodtechnol/windowsserver2003/zh-chs/library/iis/ 41c238b2-1188-488f-bf2d-464383b1bb08.mspx?mfr=true

Other WEB servers can also be redirected through settings, so I won’t list them.

From a technical perspective, our more commonly used jump methods are as follows:

We use the Fiddler tool to monitor the following There are several ways to see if the HTTP status code is 301 during the jump process? 302? 200? ：

Method 1:Response.Redirect("Test.aspx");

Status code 302 Temporary jump

Method 2:<meta http -equiv="refresh" content="5; URL=Test.aspx" />

meta fresh: This was more popular before 2000, but now it is very popular. Rare. Specifically, it uses the meta instruction in the web page to redirect to a new web page after a specific time. If the delay time is too short (within about 5 seconds), it will be judged as spam. In this jump method, during the entire jump process, the HTTP status of the page is 200, that is, no errors occur on the page.

Method 3: Server.Transfer("Test.aspx");

In this jump method, the page Http status is 200 during the entire jump process , that is, no errors occur on the page.

Method 4: URLRewrite

In this jump method, the page Http status is 200 during the entire jump process, that is, no errors occur on the page.

None of them are 301 jumps. That is to say, the above jump methods do not use the benefits of 301 jump.

What are the benefits of using 301 jump?

SEO (Search Engine Optimization) mentioned one point: If we use a 301 jump method to jump an address, the search engine will bring the PageRank and other information of the old address to the new address, and at the same time Completely discard the original old address in the search engine index database.

How to code to implement 301 jump?

Response.Status = "301 Moved Permanently";
Response.AddHeader("Location","..."); //这里的 ... 表示你要跳转去的页面。

Related learning recommendations: Website construction tutorial

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