Upload Image Spring Boot, Add Product | Part 7 | Self-Code || Ecommerce Web Spring Boot Project

Part 7: Upload Image, Add New Product, Upload Image Product to Directory, @Component, Product Service logical with Spring Boot-Ecommerce Project using Spring Boot step-by-step
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LEARN ALL FEATURES with ADVANCED KNOWLEDGE (FREE) IN SPRING BOOT REST API, I HAD BUILT IT
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[self-code]

Hi everyone, I have fixed all bugs I received and updated to the newest version. If you face any problems, inbox Facebook: Learn With Self-Code

[kylelui]

sir I have a problem the image won't show in the table when I run it, it becomes null

[NguyenThaiHiep]

em bị lỗi An error happened during template parsing (temple :"class path resource [templates/products.html]. em vào Manage Product thì lị lỗi này ạ

[digitalishplus]

Good evening sir, I have a problem because if I click on product manager I should have the list of products recorded as at the category level but I see nothing the table is empty. Can you help me please

[CartoonCrazeTVs]

Sao của em không dùng được đoạn code : if (authentication == null || authentication instanceof AnonymousAuthenticationToken) {
return "redirect:/login";
}. Thay vào đó em dùng Principle thì lại được a nhỉ

[dawa]

Thank you for your lecture.
I have a question, sir.
In select tag, category field of is saved as category's id ?

[IsaMmmdov-buco]

Hi sir. I have a question.
i write :
@GetMapping("/categories")
public String categories(Model model, Principal principal) {
if (principal == null) {
return "redirect:/login";
}
List<Category> categories = categoryService.findAll();
model.addAttribute("categories", categories);
model.addAttribute("size", categories.size());
model.addAttribute("categoryNew", new Category());
model.addAttribute("title", "Category");
return "categories";
}

But when i refresh categories page, it don't return login. However i write :
if (principal == null) {
return "redirect:/login";
} but don't work.

[javjaksmoke]

hello brother
Can you sharing your full project to me becus your project at github link folder see only Controller funtion

[Poojitha_]

Can u please mention ur github link so that I can have ur code for my understanding purpose ??

[kajalsavita]

I have an error on product service lmpl

[rattanachaiteekatipsakul]

1.12.03 I errors detached entity passed to persist: nested exception is detached entity passed to persist: