ComplateFeature基本使用
- combine 合并feature
import cn.hutool.http.HttpUtil; import entity.EssBptPrice; import entity.Student; import java.util.ArrayList; import java.util.List; import java.util.concurrent.CompletableFuture; import java.util.concurrent.ExecutionException; public class AppTest { public static void main(String[] args) throws ExecutionException, InterruptedException { Student student = new Student(); student.setName("jzhangsan"); EssBptPrice essBptPrice = new EssBptPrice(); essBptPrice.setCreatedBy("wangwu"); CompletableFuture<List<Student>> studentFeature = CompletableFuture.supplyAsync(() -> { List<Student> list = new ArrayList<>(); list.add(student); return list; }); CompletableFuture<List<EssBptPrice>> essFeature = CompletableFuture.supplyAsync(() -> { List<EssBptPrice> essBptPrices = new ArrayList<>(); essBptPrices.add(essBptPrice); return essBptPrices; }); //合并两个feature CompletableFuture<List<String>> commonfeature = studentFeature.thenCombine(essFeature, (s, e) -> merge(s, e)); for (String s : commonfeature.get()) { System.out.println("合并后输出:" + s); } } public static List<String> merge(List<Student> student, List<EssBptPrice> listCompletableFuture) { List<String> list = new ArrayList<>(); student.forEach(x -> list.add(x.getName())); listCompletableFuture.forEach(y -> list.add(y.getCreatedBy())); return list; } }
- thenApply
/** * feature 之后进行相关操作 * @param studentFeature * @throws ExecutionException * @throws InterruptedException */ public static void thenApply(CompletableFuture<List<Student>> studentFeature) throws ExecutionException, InterruptedException { List<Student> students = studentFeature.thenApply(x -> { x.forEach(y -> y.setName(y.getName() + "999")); return x; }).get(); students.forEach(x-> System.out.println(x.getName())); }
- compose
/** * 生成新的feature * @param studentFeature * @throws ExecutionException * @throws InterruptedException */ public static void thenCompose(CompletableFuture<List<Student>> studentFeature) throws ExecutionException, InterruptedException { List<Student> students = studentFeature.thenCompose(x -> CompletableFuture.supplyAsync(() -> { x.forEach(y -> y.setName(y.getName() + "8888")); return x; })).get(); students.forEach(x-> System.out.println(x.getName())); }