[404 error reported when deploying Java Web project in SAE], saejavaweb

[404 error reported when deploying Java Web project in SAE], saejavaweb

If you have any shortcomings, please kindly advise. Reprinted Please note: @ CSU-Max

Today, I wrote a small JavaWeb project and uploaded it to SAE. An error occurred while accessing it. Local testing is normal, and projects uploaded during platform development can be accessed normally. So it took two hours to finally find out the cause of the error.

The error message is as follows:
Error 404-Not Found. No context on this server matched or handled this request.
Contexts known to this server are

According to the information on the Internet, it may be that jar packages such as servlet-api.jar in the project conflict with the jar packages provided by the SAE platform. Then, package the project into a war package and delete the jar package under lib. Re-upload the test and the same error is returned.

The first step is not feasible. After deleting the servlet section in web. xml in the project, create an index. jsp page in the root directory and re-compile and upload the page.

Visible or java part of the problem, since the previous has ruled out the servlet-api.jar and other jar package conflicts, then what is the other reason?

After searching on the internet, we found that the jdk version used for compilation may be incorrect. The problem is that the jdk version on the local machine is 1.7, and jdk 1.6 is required to use SAE, so jdk 1.6 is replaced, and then re-compiled and uploaded. The test is normal.

It turns out that the project that was previously uploaded to SAE was normally accessed because the jdk version on the current machine was 1.6. The jdk version on the current machine is 1.7.

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** Reprinted please indicate the source: @ CSU-Max http://blog.csdn.net/csu_max **

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Error 404 in java Web project

Generally, you can delete the project in tomcat and redeploy it.

Or delete all jobs and restart them.
If you cannot delete tomcat again, it is absolutely OK to copy a tomcat again ,.

After running Java web project Tomcat, the jsp interface is not displayed, and the project is successfully deployed under webapps. Error 404 is reported,

Is the access address incorrect?