springboot 验证信息国际化

最新推荐文章于 2025-07-09 01:13:18 发布

immaqi

最新推荐文章于 2025-07-09 01:13:18 发布

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分类专栏：技术文章标签： springboot 国际化 ValidationMessages ValidationMessageSource

本文链接：https://blog.youkuaiyun.com/immaqi/article/details/79647171

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本文介绍如何在Spring MVC项目中使用验证框架进行输入校验，包括实体类属性注解配置、全局异常处理实现及自定义错误消息资源文件。

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1.准备entity 属性用@NotBlank(message="{error.name}")

2.controller 入参 @Valid User

3.项目中加入GlobalExceptionHandler

4.在resources目录下增加 ValidationMessages.properties  ValidationMessages_en_US.properties ValidationMessages_zh_CN.properties

若要自定义文件位置或名称则需要重写WebMvcConfigurerAdapter 的 getValidator 方法

代码见 MyConfigureation

@Configuration

public class MyConfigureation extends WebMvcConfigurerAdapter {

	public ResourceBundleMessageSource getMessageSource() throws Exception {

        ResourceBundleMessageSource rbms = new ResourceBundleMessageSource();

        rbms.setDefaultEncoding("UTF-8");

        rbms.setBasenames("i18n/error/ValidationMessages"); // 此为文件目录 ValidationMessages是文件名

        rbms.setCacheSeconds(10);

        return rbms;

}

    @Bean 

    @Override

    public Validator getValidator() {

        LocalValidatorFactoryBean validator = new LocalValidatorFactoryBean();

        try {

			validator.setValidationMessageSource(getMessageSource());

		} catch (Exception e) {

			e.printStackTrace();

}

        return validator;

}

}

@ControllerAdvice

@RestController

public class GlobalExceptionHandler implements ErrorController {

    private Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    @ExceptionHandler(value = Exception.class)

    @RequestMapping("/error")

    public Result defaultErrorHandler(HttpServletRequest req, Exception ex) throws Exception {

        logger.error("", ex);

        String result = "";

        if (ex instanceof BindException) {

            BindException bindException = (BindException) ex;

            for (FieldError fieldErro : bindException.getBindingResult().getFieldErrors()) {

                result += "【" + fieldErro.getField() + ":" + fieldErro.getDefaultMessage() + "】";

}

        } else if (ex instanceof MethodArgumentNotValidException) {

            MethodArgumentNotValidException methodArgumentNotValidException = (MethodArgumentNotValidException) ex;

            for (FieldError fieldErro : methodArgumentNotValidException.getBindingResult().getFieldErrors()) {

                result += "【" + fieldErro.getField() + ":" + fieldErro.getDefaultMessage() + "】";

}

        } else if (ex instanceof HttpRequestMethodNotSupportedException) {

            HttpRequestMethodNotSupportedException httpRequestMethodNotSupportedException = (HttpRequestMethodNotSupportedException) ex;

            result = httpRequestMethodNotSupportedException.getMessage();

        } else if (ex instanceof NoHandlerFoundException) {

            result = "无效的请求地址";

        } else if (ex instanceof MissingServletRequestParameterException) {

            MissingServletRequestParameterException missingServletRequestParameterException = (MissingServletRequestParameterException) ex;

            result = "缺少必要的参数[" + missingServletRequestParameterException.getMessage() + "]";

        } else {

            result = "Error handling OR Service unavaliable at client01";

}

        return new Result(1, result);

}

    public String getErrorPath() {

        return "/error";

}

}

public class User {

	private int id;

	@NotBlank(message="{error.name}")

	private String name;

	@NotEmpty(message="密码不能为空")

	private String pwd;

............

}

@Controller

public class HelloController {

@ResponseBody

	@RequestMapping("/user")

	public User test(@Valid User user){

		System.out.println(user);

		return user;

}

}