spring-boot web项目常用配置

一.对用户输入query参数过滤空字符串

使用 WebBindingInitializer 来对string类型参数进行过滤,但是这种方式只能处理query参数不能处理body参数

代码例子:

/**
 * 处理String类型的请求参数,如果是空字符串则转为null,否则头尾去空
 * 如果是Body,这种方式处理不了
 *
 * @create: 2018-11-08 17:10
 **/
@ControllerAdvice
public class StringInitBinder {
    @InitBinder
    public void initBinder(WebDataBinder binder, WebRequest request) {
        binder.registerCustomEditor(String.class, new StringTrimmerEditor(true));
    }

}

 

二. 自定义Jackson ObjectMapper SimpleModule的扩展来去除@RequestBody解析实体类中字符串属性的首尾空格

/**
 * @Author qinming
 * @Description 自定义Jackson ObjectMapper SimpleModule的扩展来去除@RequestBody解析实体类中字符串属性的首尾空格
 * @Date 下午6:06 2018/11/27
 **/
@Component
public class StringTrimModule extends SimpleModule {
    private static final long serialVersionUID = -1269300095841307512L;

    public StringTrimModule() {
        addDeserializer(String.class, new StdScalarDeserializer<String>(String.class) {
            private static final long serialVersionUID = 1252572680057675269L;

            @Override
            public String deserialize(JsonParser jsonParser, DeserializationContext ctx) throws IOException {
                return jsonParser.getValueAsString().trim();
            }
        });
    }
}

 

三.自定义query请求参数解析

自定参数解析,需要先自定义一个注解。以ID参数解密为例进行说明:

1.自定义注解   @IdDecrypt

/**
 * @create: 2018-11-06 14:23
 **/

@Target({ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface IdDecrypt {

    String value() default "AES";
}

2. 自定义参数解析

/**
 * ID参数解析
 *
 **/
public class IdDecryptResolver implements HandlerMethodArgumentResolver {
// 判定参数是否支持解析
    @Override
    public boolean supportsParameter(MethodParameter methodParameter) {
        return methodParameter.hasParameterAnnotation(IdDecrypt.class);
    }

    @Override
    public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer modelAndViewContainer, NativeWebRequest nativeWebRequest, WebDataBinderFactory webDataBinderFactory) throws Exception {
        HttpServletRequest request = nativeWebRequest.getNativeRequest(HttpServletRequest.class);
        Object arg = null;
        String[] paramValues = request.getParameterValues(methodParameter.getParameterName());
        if (paramValues != null) {
            arg = (paramValues.length == 1 ? paramValues[0] : paramValues);
        }
//根据参数名称获取WebDataBinder
        WebDataBinder binder = webDataBinderFactory.createBinder(nativeWebRequest, null, methodParameter.getParameterName());
//传入解析后的值,并根据参数类型进行转换
        arg = binder.convertIfNecessary(SerializerUtil.decryptAES(URLDecoder.decode(String.valueOf(arg), "UTF-8")), methodParameter.getParameterType(), methodParameter);
        return arg;
    }
}

3. 在配置WebMvcConfig中添加自定义的ArgumentResolver(也就是上面的IdDecryptResolver)

@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {
......

    @Override
    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
//添加自定义Resolver
        argumentResolvers.add(new IdDecryptResolver());
        super.addArgumentResolvers(argumentResolvers);
    }
}

 

4. 在参数上添加该注解

@GetMapping("/info")
    public ApiData info(@IdDecrypt Long id) {
        LOGGER.info("Controller.info", "id:{}", id);
        return newApiData();
    }

 

 

四.自定义日期参数转换

1.我这边碰到的日期转换是 时间戳 -> 日期类型 ,so我的配置是这样的

@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {


   。。。。。。

    /**
     * 时间戳转日期的转换器
     *
     * @param registry
     */
    @Override
    public void addFormatters(FormatterRegistry registry) {
        registry.addConverter(new Converter<String, Date>() {
            @Override
            public Date convert(String source) {
                if (StringUtils.isNotBlank(source)) {
                    String decode = Codec.decode(source);
            //正则判断时间戳参数格式
if (Pattern.compile(PatternConstant.TIME_STAMP_PATTERN).matcher(decode).matches()) { return new Date(Long.parseLong(decode)); } else { throw new RuntimeException("时间戳格式错误!"); } } return null; } }); super.addFormatters(registry); } }

 

posted @ 2018-11-13 21:00  JustTheWayIAm  阅读(1348)  评论(0编辑  收藏  举报