java中list按照某個屬性排序方法

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public List sort(List list,final String sortName,final String direction){        Collections.sort(list, new Comparator(){            public int compare(Object a, Object b){                try {                    //根據屬性名稱擷取到field                    Field field = a.getClass().getDeclaredField(sortName);                    //field設定為public訪問屬性.                    field.setAccessible(true);                                        //擷取該屬性的類型                    Class typeClass = field.getType();                    //int排序                    if (typeClass.equals(Integer.class)) {                        Integer one = (Integer)field.get(a);                        Integer two = (Integer)field.get(b);                                                if ("desc".equals(direction)) {                            return two - one;                           } else {                            return one - two;                        }                    } else {//String排序                        String one = (String)field.get(a);                        String two = (String)field.get(b);                                                if ("desc".equals(direction)) {                            return two.compareTo(one);                           } else {                            return one.compareTo(two);                        }                    }                } catch (Exception e) {                    StringWriter sw = new StringWriter();                    e.printStackTrace(new PrintWriter(sw, true));                }                return 1;                            }        });        return list;    }}

 

java中list按照某個屬性排序方法