SmartValidator - 手动调用组验证

使用SmartValidator来进行表单验证是非常方便和高效的。在某些情况下，我们可能需要手动调用组验证来进行更复杂的验证操作。本文将介绍如何使用SmartValidator手动调用组验证，并提供一个实际案例来帮助读者更好地理解。

java
public class UserForm {
    private String username;
    private String password;
    private String email;
    // getters and setters
}

java
@Component
public class UsernameValidator implements Validator {
    @Override
    public boolean supports(Class clazz) {
        return UserForm.class.isAssignableFrom(clazz);
    }
    @Override
    public void validate(Object target, Errors errors) {
        UserForm userForm = (UserForm) target;
        // 验证用户名的逻辑
        // 如果用户名不符合要求，使用errors对象添加错误信息
    }
}
@Component
public class PasswordValidator implements Validator {
    @Override
    public boolean supports(Class clazz) {
        return UserForm.class.isAssignableFrom(clazz);
    }
    @Override
    public void validate(Object target, Errors errors) {
        UserForm userForm = (UserForm) target;
        // 验证密码的逻辑
        // 如果密码不符合要求，使用errors对象添加错误信息
    }
}
@Component
public class EmailValidator implements Validator {
    @Override
    public boolean supports(Class clazz) {
        return UserForm.class.isAssignableFrom(clazz);
    }
    @Override
    public void validate(Object target, Errors errors) {
        UserForm userForm = (UserForm) target;
        // 验证邮箱地址的逻辑
        // 如果邮箱地址不符合要求，使用errors对象添加错误信息
    }
}

java
@Controller
public class UserController {
    @Autowired
    private SmartValidator validator;
    @PostMapping("/register")
    public String register(@ModelAttribute("userForm") UserForm userForm, BindingResult bindingResult) {
        // 手动调用组验证
        validator.validate(userForm, bindingResult, UsernameValidator.class, PasswordValidator.class, EmailValidator.class);
        if (bindingResult.hasErrors()) {
            // 处理验证失败的逻辑
            return "error";
        }
        // 处理验证成功的逻辑
        return "success";
    }
}