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The returned parameters of the java API are sorted by the request parameters.

This kind of problem may be encountered in the actual development of the project. The order of the interface request parameters is [a _ dint _ b _ c], and the returned data is [bObject,cObject,aObject]. This may be caused by the underlying design pattern or table splicing query. This paper mainly uses the flow method to achieve this function.

Code implementation

Import lombok.Data;import java.io.Serializable;/** * @ description Analog Interface result Class * @ author: WilsonMeng * @ create: 2021-01-26 14:26 * * / @ Datapublic class SkuInfo implements Serializable {private static final long serialVersionUID =-6242151519713186291L; / * * spuId * / private String spuId; / * skuId * / private String skuId / * Commodity name * / private String productName; / * * Commodity Picture * / private String picture; / * Commodity Link * / private String link;} sort import com.alibaba.fastjson.JSON;import com.google.common.collect.Lists;import com.wanli.databoard.dto.SkuInfo;import java.util.Arrays;import java.util.Comparator;import java.util.List Import java.util.Objects;import java.util.stream.Collectors;/** * @ description * @ author: WilsonMeng * @ create: 2021-01-26 14:28 * * / public class SkuSortTest {public static void main (String [] args) {List skuIdList = Arrays.asList ("sku1", "sku2", "sku3", "sku4") / / input parameter System.out.println ("skuid list:" + JSON.toJSONString (skuIdList)); System.out.println (); List skuInfoList = Lists.newArrayList (); SkuInfo S1 = new SkuInfo (); s1.setSpuId ("spu1"); s1.setSkuId ("sku1"); s1.setProductName ("Commodity 1"); s1.setPicture ("p1") S1.setLink ("link1"); skuInfoList.add (S1); SkuInfo S4 = new SkuInfo (); s4.setSpuId ("spu1"); s4.setSkuId ("sku4"); s4.setProductName ("Commodity 2"); s4.setPicture ("p4"); s4.setLink ("link4"); skuInfoList.add (S4); SkuInfo S3 = new SkuInfo () S3.setSpuId ("spu2"); s3.setSkuId ("sku3"); s3.setProductName ("Commodity 3"); s3.setPicture ("p3"); s3.setLink ("link3"); skuInfoList.add (S3); SkuInfo S2 = new SkuInfo (); s2.setSpuId ("spu2"); s2.setSkuId ("sku2"); s2.setProductName ("Commodity 2") S2.setPicture ("p2"); s2.setLink ("link2"); skuInfoList.add (S2); / / input parameter System.out.println for analog interface ("skuInfoList list:" + JSON.toJSONString (skuInfoList)); System.out.println () / sort by request parameters List resultList = skuInfoList.stream (). Sorted (getSkuIdListComparator (skuIdList)) .sorting (Collectors.toList ()); System.out.println ("result after sorting:" + JSON.toJSONString (resultList));} private static Comparator getSkuIdListComparator (List skuIds) {return (o1, O2)-> {int order1 = 0, order2 = 0 For (int I = 0; I

< skuIds.size(); i++) { if (Objects.equals(o1.getSkuId(), skuIds.get(i))) { order1 = i; } if (Objects.equals(o2.getSkuId(), skuIds.get(i))) { order2 = i; } } return order1 - order2; }; }} 代码运行结果： skuid列表：["sku1","sku2","sku3","sku4"] skuInfoList列表：[{"link":"link1","picture":"p1","productName":"商品1","skuId":"sku1","spuId":"spu1"},{"link":"link4","picture":"p4","productName":"商品2","skuId":"sku4","spuId":"spu1"},{"link":"link3","picture":"p3","productName":"商品3","skuId":"sku3","spuId":"spu2"},{"link":"link2","picture":"p2","productName":"商品2","skuId":"sku2","spuId":"spu2"}] 排序完成后的结果：[{"link":"link1","picture":"p1","productName":"商品1","skuId":"sku1","spuId":"spu1"},{"link":"link2","picture":"p2","productName":"商品2","skuId":"sku2","spuId":"spu2"},{"link":"link3","picture":"p3","productName":"商品3","skuId":"sku3","spuId":"spu2"},{"link":"link4","picture":"p4","productName":"商品2","skuId":"sku4","spuId":"spu1"}] java通过接口进行排序描述 对学生排序，先按成绩由大到小排序，成绩相同按姓名字母排序，姓名相同再按学号由小到大排序。 package src7; import java.util.*; class Student implements Comparable { private String name; private int id; private int grade; public Student(String name, int id, int grade) { this.name = name; this.id = id; this.grade = grade; } public int compareTo(Student o) { Student s = (Student) o; if (this.grade>

S.grade) {return-1 impact / returns a negative number, top of the current score} else if (this.grade = = s.grade) {/ / if (this.name.hashCode ()

< s.name.hashCode()) {// return -1; //使用hashCode() if (this.name.compareTo(s.name){public int compare(T obj1,T obj2);} 比较对象obj1和obj2，让obj1位于obj2之前则返回负值 简单举例：对姓名排序 package src7;import sun.awt.geom.AreaOp;import java.util.*;class Person{ private String name; public Person(String name){ this.name=name; } public String getName(){ return name; } public String toString(){ return name; }} public class Test{ static final Comparator ODER_BY_NAME=new Comparator() { @Override public int compare(Person o1, Person o2) { return o1.getName().compareTo(o2.getName()); } }; public static void main(String[] args) { Person personArr[]={ new Person("ZhangLiang"), new Person("LiSi"), new Person("WangNing"), new Person("ZhangSan"), new Person("ChenYi") }; Listpersons=Arrays.asList(personArr); Collections.sort(persons,ODER_BY_NAME); System.out.println(persons); } } 运行结果：

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