Spring @MVC和@RequestParam验证

从Spring
3.0开始，您可以设置

ConversionService

@InitBinder

value

@InitBinder("page")public void initBinder(WebDataBinder binder) {    FormattingConversionService s = new FormattingConversionService();    s.addFormatterForFieldType(Integer.class, new Formatter<Integer>() {        public String print(Integer value, Locale locale) { return value.toString();        }        public Integer parse(String value, Locale locale)     throws ParseException { try {     return Integer.valueOf(value); } catch (NumberFormatException ex) {     return 1; }        }    });    binder.setConversionService(s);}