public Object resolve(Invocation inv, ParamMetaData metaData) {
String toConvert = null;
//
FlashParam flashParam = metaData.getAnnotation(FlashParam.class);
if (flashParam != null) {
toConvert = inv.getFlash().get(flashParam.value());
}
for (String paramName : metaData.getParamNames()) {
if (paramName != null) {
toConvert = inv.getRequest().getParameter(paramName);
if (toConvert != null) {
break;
}
}
}
if (toConvert == null) {
DefValue defValudeAnnotation = metaData.getAnnotation(DefValue.class);
if (defValudeAnnotation != null
&& !DefValue.NATIVE_DEFAULT.equals(defValudeAnnotation.value())) {
toConvert = defValudeAnnotation.value();
}
}
if (toConvert != null) {
SimpleTypeConverter typeConverter = SafedTypeConverterFactory.getCurrentConverter();
return typeConverter.convertIfNecessary(toConvert, metaData.getParamType());
}
if (metaData.getParamType().isPrimitive()) {
// 对这最常用的类型做一下if-else判断，其他类型就简单使用converter来做吧
if (metaData.getParamType() == int.class) {
return Integer.valueOf(0);
} else if (metaData.getParamType() == long.class) {
return Long.valueOf(0);
} else if (metaData.getParamType() == boolean.class) {
return Boolean.FALSE;
} else if (metaData.getParamType() == double.class) {
return Double.valueOf(0);
} else if (metaData.getParamType() == float.class) {
return Float.valueOf(0);
} else {
SimpleTypeConverter typeConverter = SafedTypeConverterFactory.getCurrentConverter();
return typeConverter.convertIfNecessary("0", metaData.getParamType());
}
}
return null;
}
protected Date resolveUtilDate(String text, ParamMetaData metaData) throws ParseException {
if (StringUtils.isEmpty(text)) {
DefValue defaultValudeAnnotation = metaData.getAnnotation(DefValue.class);
if (defaultValudeAnnotation != null
&& !DefValue.NATIVE_DEFAULT.equals(defaultValudeAnnotation.value())) {
if (StringUtils.isEmpty(defaultValudeAnnotation.value())) {
return new Date(); // 当前时间!
} else {
text = defaultValudeAnnotation.value(); // 改变要被解析的文本!
}
} else {
return null; // 保留null，而非当前时间
}
}
Annotation[] paramAnnotations =
metaData.getMethod().getParameterAnnotations()[metaData.getIndex()];
for (Annotation annotation : paramAnnotations) {
if (annotation instanceof Pattern) {
String[] patterns = Pattern.class.cast(annotation).value();
for (String pattern : patterns) {
// 以long为时间
if ("long".equals(pattern)) {
boolean digit = true;
for (int i = 0; i < text.length(); i++) {
if (!Character.isDigit(text.charAt(i))) {
digit = false;
break;
}
}
if (digit) {
return new Date(Long.parseLong(text));
}
}
// 可以配置多个pattern!! 通过长度匹配
if (text.length() == pattern.length()) {
return new SimpleDateFormat(pattern).parse(text);
}
}
break;
}
}
return DatePatterns.parse(text);
}