filterList.add(filter);
// 过滤器的类
Class<?> filterClass = filter.getClass();
// 过滤器的FilterSetting实例
FilterSetting filterSetting = filterClass
.getAnnotation(FilterSetting.class);
// 如果此过滤器的类上有FilterSetting注解，则全部过滤器根据FilterSetting注解的index的值进行排序
if (filterSetting != null) {
// 有属性的过滤器列表
List<Filter> hasSettingFilterList = new ArrayList<Filter>();
// 没有属性的过滤器列表
List<Filter> noSettingFilterList = new ArrayList<Filter>();
// 设置与过滤器的Map
Map<FilterSetting, Filter> settingFilterMap = new HashMap<FilterSetting, Filter>();
// 分离
for (Filter tmpFilter : filterList) {
Class<?> tmpFilterClass = tmpFilter.getClass();
FilterSetting tmpFilterSetting = tmpFilterClass
.getAnnotation(FilterSetting.class);
// 如果没有设置
if (tmpFilterSetting == null) {
noSettingFilterList.add(tmpFilter);
}// 否则有设置
else {
hasSettingFilterList.add(tmpFilter);
settingFilterMap.put(tmpFilterSetting, tmpFilter);
}
}
// 根据index排序
FilterSetting[] filterSettings = settingFilterMap.keySet().toArray(
new FilterSetting[0]);
for (int j = 0; j < filterSettings.length; j++) {
for (int i = 0; i < filterSettings.length; i++) {
if (i == 0)
continue;
// 如果前面的index大于后面的index，则交换
if (filterSettings[i - 1].index() > filterSettings[i]
.index()) {
FilterSetting tmpExchangeObject = filterSettings[i - 1];
filterSettings[i - 1] = filterSettings[i];
filterSettings[i] = tmpExchangeObject;
}
}
}