Added Spring Boot role based security sample application

2 files changed, 94 insertions, 0 deletions

diff --git a/spring-boot/10-role-based-security/src/main/java/com/example/spring/contact/controller/ContactController.java b/spring-boot/10-role-based-security/src/main/java/com/example/spring/contact/controller/ContactController.java
new file mode 100644
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--- /dev/null
+++ b/spring-boot/10-role-based-security/src/main/java/com/example/spring/contact/controller/ContactController.java
@@ -0,0 +1,49 @@
+package com.example.spring.contact.controller;
+
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+
+import jakarta.validation.Valid;
+
+@Controller
+public class ContactController {
+
+	/*
+	 * Some values that can be used with @PreAuthorize():
+	 * 
+	 * hasRole('ADMIN'): Checks if the user contains the authority ROLE_ADMIN.
+	 * 
+	 * hasAnyRole('USER', 'ADMIN'): Passes if the user has at least one matching
+	 * authority.
+	 * 
+	 * isAuthenticated(): Verifies that the client is logged into the system
+	 */
+
+	@GetMapping("/contact")
+	@PreAuthorize("hasAnyRole('USER', 'ADMIN')")
+	public String showForm(Model model) {
+		model.addAttribute("contactForm", new ContactForm());
+		return "contact/form";
+	}
+
+	@PostMapping("/contact")
+	@PreAuthorize("hasAnyRole('USER', 'ADMIN')")
+	public String processSubmission(@Valid @ModelAttribute ContactForm contactForm, BindingResult bindingResult,
+			Model model) {
+		if (bindingResult.hasErrors()) {
+			return "contact/form";
+		}
+
+		// Do whatever needed with the submitted data here.
+		// For example, invoke a method in a service/componet bean to send an email to
+		// contact person.
+
+		return "contact/result";
+	}
+
+}
diff --git a/spring-boot/10-role-based-security/src/main/java/com/example/spring/contact/controller/ContactForm.java b/spring-boot/10-role-based-security/src/main/java/com/example/spring/contact/controller/ContactForm.java
new file mode 100644
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--- /dev/null
+++ b/spring-boot/10-role-based-security/src/main/java/com/example/spring/contact/controller/ContactForm.java
@@ -0,0 +1,45 @@
+package com.example.spring.contact.controller;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
+import jakarta.validation.constraints.Size;
+
+public class ContactForm {
+
+	@Pattern(regexp = "^[ a-zA-Z]+$", message = "Name should only include English letters")
+	@NotBlank(message = "Name is required")
+	private String name;
+
+	@Email(message = "Must be a valid email")
+    @NotBlank(message = "Email is required")
+	private String email;
+
+	@Size(min = 10, message = "Message must be at least 10 characters long")
+	private String message;
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getEmail() {
+		return email;
+	}
+
+	public void setEmail(String email) {
+		this.email = email;
+	}
+
+	public String getMessage() {
+		return message;
+	}
+
+	public void setMessage(String message) {
+		this.message = message;
+	}
+
+}