泛型集合排序，根据实体类对象的某个属性排序

泛型集合排序，根据实体类对象的某个属性排序

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;

import sy.model.aite.analysis.SelfTestAnalysis;

/**
* 泛型集合排序，根据实体类对象的某个属性排序
* @author admin
*
* @param <E>
*/
public class SortList<E> {

public void Sort(List<E> list, final String method, final String sort) {
Collections.sort(list, new Comparator<Object>() {
public int compare(Object a, Object b) {
int ret = 0;
try {
Method m1 = ((E) a).getClass().getMethod(method, null);
Method m2 = ((E) b).getClass().getMethod(method, null);
if (sort != null && "desc".equals(sort))// 倒序
ret = m2.invoke(((E) b), null).toString()
.compareTo(m1.invoke(((E) a), null).toString());
else
// 正序
ret = m1.invoke(((E) a), null).toString()
.compareTo(m2.invoke(((E) b), null).toString());
} catch (NoSuchMethodException ne) {
System.out.println(ne);
} catch (IllegalAccessException ie) {
System.out.println(ie);
} catch (InvocationTargetException it) {
System.out.println(it);
}
return ret;
}
});
}

public static void main(String[] args) {
List<SelfTestAnalysis> list = new ArrayList<SelfTestAnalysis>();
SelfTestAnalysis st1 = new SelfTestAnalysis();
st1.setStatus("OK");
st1.setPlateNumber("车牌");
st1.setForSort(2);
list.add(st1);

SelfTestAnalysis st2 = new SelfTestAnalysis();
st2.setStatus("NG");
st1.setPlateNumber("车牌");
st2.setForSort(3);
list.add(st2);

SelfTestAnalysis st3 = new SelfTestAnalysis();
st3.setStatus("OFF");
st1.setPlateNumber("车牌");
st3.setForSort(1);
list.add(st3);

SelfTestAnalysis st4 = new SelfTestAnalysis();
st4.setStatus("OFF");
st1.setPlateNumber("车牌");
st4.setForSort(1);
list.add(st4);

System.out.println("默认排序");
for(SelfTestAnalysis test : list){
System.out.println(test.toString());
}
System.out.println();

SortList<SelfTestAnalysis> sort = new SortList<SelfTestAnalysis>();

System.out.println("getNum的desc排序");
sort.Sort(list, "getForSort", "desc");
for(SelfTestAnalysis test : list){
System.out.println(test.toString());
}

System.out.println();

System.out.println("getNum的asc排序");
sort.Sort(list, "getStatus", null);
for(SelfTestAnalysis test : list){
System.out.println(test.toString());
}
}
}