private static boolean addIndexAliasParamNameIfNeccessary(ParamMetaData metaData) {
Class<?>[] paramTypes = metaData.getMethod().getParameterTypes();
int index = metaData.getIndex(); // index是从0开始的
int uriParamIndex = 0; // uriParamIndex，有效的值是从**1**开始的
int breakIndex = 0; // breakIndex从0开始的
for (; breakIndex < paramTypes.length && breakIndex <= index; breakIndex++) {
Class<?> type = paramTypes[breakIndex];
if (type.isArray()) {
type = type.getComponentType();
} else if (Collection.class.isAssignableFrom(type)) {
Class<?>[] generics = compileGenericParameterTypesDetail(metaData.getMethod(), breakIndex);
if (generics == null) {
return false;
}
Assert.isTrue(generics.length > 0);
type = generics[0];
}
if (ClassUtils.isPrimitiveOrWrapper(type)
|| type == String.class
|| Date.class.isAssignableFrom(type)) {
uriParamIndex++;
}
}
if ((breakIndex - 1) == index && uriParamIndex > 0) {
String alias = "$" + uriParamIndex;
metaData.addAliasParamName(alias);
if (logger.isDebugEnabled()) {
logger.debug(
"add index alias paramName: '"
+ alias
+ "' for "
+ metaData.getControllerClass().getName()
+ "."
+ metaData.getMethod().getName()
+ "(..."
+ metaData.getParamType()
+ "[index="
+ breakIndex
+ "] ...)");
}
return true;
}
return false;
}
public final boolean supports(ParamMetaData metaData) {
if (innerSupports(metaData)) {
Class<?>[] generics =
compileGenericParameterTypesDetail(metaData.getMethod(), metaData.getIndex());
if (generics == null || generics.length == 0) {
throw new IllegalArgumentException(
"please use generic for "
+ metaData.getParamType().getName()
+ " ["
+ metaData.getControllerClass().getName()
+ "."
+ metaData.getMethod().getName()
+ "]");
}
metaData.setUserObject(this, generics[0]);
return true;
}
return false;
}
public boolean supports(ParamMetaData metaData) {
boolean supports =
Map.class == metaData.getParamType() || HashMap.class == metaData.getParamType();
if (supports) {
Class<?>[] generics =
compileGenericParameterTypesDetail(metaData.getMethod(), metaData.getIndex());
if (generics == null || generics.length == 0) {
throw new IllegalArgumentException(
"please use generic for "
+ metaData.getParamType().getName()
+ " ["
+ metaData.getControllerClass().getName()
+ "."
+ metaData.getMethod().getName()
+ "]");
}
metaData.setUserObject(this, generics);
}
return supports;
}
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);
}
