[JAVA-16216] Moved customvalidator from spring-mvc-basic-5 to spring-mvc-basic-3

spring-web-modules/spring-mvc-basics-3/src/main/java/com/baeldung/customvalidator/ContactNumberConstraint.java

@@ -0,0 +1,24 @@
+package com.baeldung.customvalidator;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+
+@Documented
+@Constraint(validatedBy = ContactNumberValidator.class)
+@Target({ ElementType.METHOD, ElementType.FIELD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ContactNumberConstraint {
+
+    String message() default "Invalid phone number";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+
+}

spring-web-modules/spring-mvc-basics-3/src/main/java/com/baeldung/customvalidator/ContactNumberValidator.java

@@ -0,0 +1,17 @@
+package com.baeldung.customvalidator;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+public class ContactNumberValidator implements ConstraintValidator<ContactNumberConstraint, String> {
+
+    @Override
+    public void initialize(ContactNumberConstraint contactNumber) {
+    }
+
+    @Override
+    public boolean isValid(String contactField, ConstraintValidatorContext cxt) {
+        return contactField != null && contactField.matches("[0-9]+") && (contactField.length() > 8) && (contactField.length() < 14);
+    }
+
+}

spring-web-modules/spring-mvc-basics-3/src/main/java/com/baeldung/customvalidator/FieldsValueMatch.java

@@ -0,0 +1,31 @@
+package com.baeldung.customvalidator;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+
+@Constraint(validatedBy = FieldsValueMatchValidator.class)
+@Target({ ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface FieldsValueMatch {
+
+    String message() default "Fields values don't match!";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+
+    String field();
+
+    String fieldMatch();
+
+    @Target({ ElementType.TYPE })
+    @Retention(RetentionPolicy.RUNTIME)
+    @interface List {
+        FieldsValueMatch[] value();
+    }
+}

spring-web-modules/spring-mvc-basics-3/src/main/java/com/baeldung/customvalidator/FieldsValueMatchValidator.java

@@ -0,0 +1,31 @@
+package com.baeldung.customvalidator;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+import org.springframework.beans.BeanWrapperImpl;
+
+public class FieldsValueMatchValidator implements ConstraintValidator<FieldsValueMatch, Object> {
+
+    private String field;
+    private String fieldMatch;
+
+    public void initialize(FieldsValueMatch constraintAnnotation) {
+        this.field = constraintAnnotation.field();
+        this.fieldMatch = constraintAnnotation.fieldMatch();
+    }
+
+    public boolean isValid(Object value, ConstraintValidatorContext context) {
+
+        Object fieldValue = new BeanWrapperImpl(value).getPropertyValue(field);
+        Object fieldMatchValue = new BeanWrapperImpl(value).getPropertyValue(fieldMatch);
+        
+        if (fieldValue != null) {
+            return fieldValue.equals(fieldMatchValue);
+        } else {
+            return fieldMatchValue == null;
+        }
+
+    }
+
+}

spring-web-modules/spring-mvc-basics-3/src/main/java/com/baeldung/customvalidator/NewUserController.java

@@ -0,0 +1,29 @@
+package com.baeldung.customvalidator;
+
+import javax.validation.Valid;
+
+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.PostMapping;
+
+@Controller
+public class NewUserController {
+
+    @GetMapping("/user")
+    public String loadFormPage(Model model) {
+        model.addAttribute("newUserForm", new NewUserForm());
+        return "userHome";
+    }
+
+    @PostMapping("/user")
+    public String submitForm(@Valid NewUserForm newUserForm, BindingResult result, Model model) {
+        if (result.hasErrors()) {
+            return "userHome";
+        }
+
+        model.addAttribute("message", "Valid form");
+        return "userHome";
+    }
+}

spring-web-modules/spring-mvc-basics-3/src/main/java/com/baeldung/customvalidator/NewUserForm.java

@@ -0,0 +1,53 @@
+package com.baeldung.customvalidator;
+
+@FieldsValueMatch.List({ @FieldsValueMatch(field = "password", fieldMatch = "verifyPassword", message = "Passwords do not match!"), @FieldsValueMatch(field = "email", fieldMatch = "verifyEmail", message = "Email addresses do not match!") })
+public class NewUserForm {
+    private String email;
+    private String verifyEmail;
+    private String password;
+    private String verifyPassword;
+
+    public NewUserForm() {
+    }
+
+    public NewUserForm(String email, String verifyEmail, String password, String verifyPassword) {
+        super();
+        this.email = email;
+        this.verifyEmail = verifyEmail;
+        this.password = password;
+        this.verifyPassword = verifyPassword;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getVerifyEmail() {
+        return verifyEmail;
+    }
+
+    public void setVerifyEmail(String verifyEmail) {
+        this.verifyEmail = verifyEmail;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getVerifyPassword() {
+        return verifyPassword;
+    }
+
+    public void setVerifyPassword(String verifyPassword) {
+        this.verifyPassword = verifyPassword;
+    }
+
+}

spring-web-modules/spring-mvc-basics-3/src/main/java/com/baeldung/customvalidator/ValidatedPhone.java

@@ -0,0 +1,20 @@
+package com.baeldung.customvalidator;
+
+public class ValidatedPhone {
+
+    @ContactNumberConstraint
+    private String phone;
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    @Override
+    public String toString() {
+        return phone;
+    }
+}

spring-web-modules/spring-mvc-basics-3/src/main/java/com/baeldung/customvalidator/ValidatedPhoneController.java

@@ -0,0 +1,30 @@
+package com.baeldung.customvalidator;
+
+import javax.validation.Valid;
+
+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.PostMapping;
+
+@Controller
+public class ValidatedPhoneController {
+
+    @GetMapping("/validatePhone")
+    public String loadFormPage(Model m) {
+        m.addAttribute("validatedPhone", new ValidatedPhone());
+        return "phoneHome";
+    }
+
+    @PostMapping("/addValidatePhone")
+    public String submitForm(@Valid ValidatedPhone validatedPhone, BindingResult result, Model m) {
+        if (result.hasErrors()) {
+            return "phoneHome";
+        }
+
+        m.addAttribute("message", "Successfully saved phone: " + validatedPhone.toString());
+        return "phoneHome";
+    }
+
+}