js對json陣列去重
/*
 * JSON陣列去重
 * @param: [array] json Array
 * @param: [string] 唯一的key名，根據此鍵名進行去重
 */
  uniqueArray:function (array, key){
    var result = [array[0]];
    for(var i = 1; i<array.length; i++){
    var item = array[i];
    var repeat = false;
    for (var j = 0; j < result.length; j++) {
      if
 
 (item[key] == result[j][key]) {
        repeat = true;
        break;
      }
    }
    if (!repeat) {
      result.push(item);
    }
  }
  return result;
  },

java對 list陣列物件進行去重
 /**
     * 去重
     * 
     * @param orderList
     * @return
     * @author jqlin
     */
    private static List<PageData> removeDuplicateOrder(List
 
<PageData> orderList) {
        Set<PageData> set = new TreeSet<PageData>(new Comparator<PageData>() {
            @Override
            public int compare(PageData a, PageData b) {
                // 字串則按照asicc碼升序排列
                return  a.getString("var0").compareTo(b.getString("var0"
 
));
            }
        });

        set.addAll(orderList);
        return new ArrayList<PageData>(set);
    }