Eclispe JSP 'your web application project must be configured to use a JDK in order to use JSPs

 

Many experts may not solve this problem, but I think it is still necessary for beginners to study this problem for a while, so I recorded it.

 

Problem description:

After you add a JSP file to the eclipse program, the entire project will report such an error.

 

 

 

Cause:

By default, the compiling environment of eclipse is JRE, but JRE does not contain the compiler. Only JDK carries the compiler. So JDK must be used as the installed JRE of your project.

 

 

Solution:

1. Select preferences under the window menu

 

 

 

2. on Java-installed JRE, select Add, select standard JVM, and select the JDK directory. Select JDK as the preferred choice for installed JRE.

 

 

 

 

The error disappears.