如何验证JPA实体的网站URL字段？

@Pattern(regexp = "^((https?|ftp|file)://)?([a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}(/[a-zA-Z0-9\\-\\.\\?\\_\\,\\'\\/\\\\+&%\\$#\\=~])*$")
@Column(name = "website_url")
private String websiteUrl;

@PostMapping("/example")
public ResponseEntity<?> createExample(@Valid @RequestBody ExampleEntity example) {
    // 处理创建实体的逻辑
}

<input type="text" name="websiteUrl" pattern="^((https?|ftp|file)://)?([a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}(/[a-zA-Z0-9\\-\\.\\?\\_\\,\\'\\/\\\\+&amp;%\\$#\\=~])*$" required>