What is reason controller not able to return the view page-CodePudding

I am using thymeleaf as front end and springboot for back end. But when I return my register.html page in register controller, And run the application . When hit localhost:8080 in my chrome browser it shows error404, page not found.I define my design pages in side the templets folder Here is the project strcture

StudentController.kt

 @GetMapping("/")
    fun home(student: Student, model: Model):String{
        model.addAttribute("courses",courses)
        return "register"
    }

    /**Registration API for Student Registration*/
    @PostMapping("/register")
    fun register(@ModelAttribute("student")student: Student, model: Model):String{
        println("Details of the course Details ${student.course}")
        studentService.saveStudent(student)
        return "welcome"
    }

when I hit localhost:8080 it shows me below type of error

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Mon Dec 13 17:09:34 IST 2021
There was an unexpected error (type=Not Found, status=404).

CodePudding user response：

Add prefix and suffix in application.properties

spring.thymeleaf.prefix= classpath:/templates/
spring.thymeleaf.suffix= .html

CodePudding user response：

did you set thymeleaf prefix in application.properties ? spring.thymeleaf.prefix=file:./templates/

CodePudding user response：

The default value for Thymeleaf prefix is classpath:/templates/ and for suffix .html source. That seems correct but you can check if you have overwritten these values in your yml/properties configuration. Also check if you have Thymeleaf added as a dependency in Gradle, reloading the Gradle project if necessary. Finally, check if you have the @Controller annotation on your controller class along with the appropriate @RequestMapping.