update Try
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b838ca2e3d
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@ -1,31 +1,8 @@
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/*
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* The MIT License (MIT)
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*
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* Copyright © 2020 xrv <xrg@live.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package io.github.ehlxr.utils;
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package com.laikang.dd.common;
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import java.util.ArrayList;
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import java.util.Objects;
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import java.util.Optional;
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import java.util.function.Consumer;
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import java.util.function.Function;
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import java.util.function.Supplier;
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@ -34,7 +11,7 @@ import java.util.function.Supplier;
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* 异常处理，简化 try catch
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*
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* @author ehlxr
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* @since 2020-12-06 21:32.
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* @since 2020-12-03 10:37.
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*/
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public class Try {
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public static <T> Try.C<T> of(Consumer<? super T> consumer) {
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@ -53,36 +30,75 @@ public class Try {
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return new Try.V(v);
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}
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@SuppressWarnings("ConstantConditions")
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public static void main(String[] args) {
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// 有返回值，无入参
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System.out.println(Try.of(() -> Long.valueOf("s")).get(0L, e -> {
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}));
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System.out.println(Try.of(() -> Long.valueOf("21")).get(0L, e -> {
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}));
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public static class V {
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private final Void v;
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private Consumer<? super Throwable> ec;
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// 有返回值，有入参
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System.out.println(Try.<String, Long>of(Long::valueOf).get("s", 0L, e -> {
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}));
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ArrayList<String> list = null;
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// 无返回值，无入参
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Try.of(() -> Thread.sleep(-1L)).exec();
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// 无返回值，有入参
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Try.<String>
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of(v -> list.add(0, v))
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.accept("test", e -> System.out.println("222222" + e.getMessage()));
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V(Void v) {
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Objects.requireNonNull(v, "No value present");
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this.v = v;
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}
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@FunctionalInterface
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public interface Void {
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void exec() throws Throwable;
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/**
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* 计算结果
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*/
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public void exec() {
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try {
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v.exec();
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} catch (Throwable e) {
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Optional.ofNullable(ec).ifPresent(c -> c.accept(e));
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}
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}
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/**
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* 如果有异常，调用自定义异常处理表达式
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*
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* @param c 自定义异常处理 lambda 表达式
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* @return {@link V}
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*/
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public V trap(Consumer<? super Throwable> c) {
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ec = c;
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return this;
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}
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}
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public static class C<T> {
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private final Consumer<? super T> consumer;
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private Consumer<? super Throwable> ec;
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C(Consumer<? super T> consumer) {
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Objects.requireNonNull(consumer, "No value present");
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this.consumer = consumer;
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}
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/**
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* 计算结果
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*
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* @param t 要计算的入参
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*/
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public void accept(T t) {
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try {
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consumer.accept(t);
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} catch (Throwable e) {
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Optional.ofNullable(ec).ifPresent(c -> c.accept(e));
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}
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}
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/**
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* 如果有异常,调用自定义异常处理表达式
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*
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* @param c 自定义异常处理 lambda 表达式
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* @return {@link C}
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*/
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public C<T> trap(Consumer<? super Throwable> c) {
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ec = c;
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return this;
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}
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}
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public static class S<R> {
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private final Supplier<? extends R> supplier;
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private Consumer<? super Throwable> ec;
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S(Supplier<? extends R> supplier) {
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Objects.requireNonNull(supplier, "No value present");
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@ -90,7 +106,7 @@ public class Try {
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}
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/**
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* 如果有异常忽略并返回默认值，否则返回计算结果
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* 如果有异常返回默认值，否则返回计算结果
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*
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* @param r 指定默认值
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* @return 实际值或默认值
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@ -99,31 +115,35 @@ public class Try {
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try {
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return supplier.get();
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} catch (Throwable e) {
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e.printStackTrace();
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Optional.ofNullable(ec).ifPresent(c -> c.accept(e));
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return r;
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}
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}
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/**
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* 如果有异常调用自定义异常处理表达式并返回默认值，否则返回计算结果
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*
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* @param r 指定默认值
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* @param e 自定义异常处理 lambda 表达式
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* @return 实际值或默认值
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*/
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public R get(R r, Consumer<? super Throwable> e) {
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Objects.requireNonNull(supplier, "No supplier present");
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public R get() {
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try {
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return supplier.get();
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} catch (Throwable th) {
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e.accept(th);
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return r;
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} catch (Throwable e) {
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Optional.ofNullable(ec).ifPresent(c -> c.accept(e));
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return null;
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}
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}
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/**
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* 如果有异常，调用自定义异常处理表达式
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*
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* @param c 自定义异常处理 lambda 表达式
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* @return {@link S}
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*/
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public S<R> trap(Consumer<? super Throwable> c) {
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ec = c;
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return this;
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}
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}
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public static class F<T, R> {
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private final Function<? super T, ? extends R> function;
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private Consumer<? super Throwable> ec;
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F(Function<? super T, ? extends R> function) {
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Objects.requireNonNull(function, "No value present");
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@ -141,96 +161,55 @@ public class Try {
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try {
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return function.apply(t);
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} catch (Throwable e) {
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e.printStackTrace();
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Optional.ofNullable(ec).ifPresent(c -> c.accept(e));
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return r;
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}
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}
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/**
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* 如果有异常调用自定义异常处理表达式并返回默认值，否则返回计算结果
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*
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* @param t 要计算的入参
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* @param r 指定默认值
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* @param e 自定义异常处理 lambda 表达式
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* @return 实际值或默认值
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*/
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public R get(T t, R r, Consumer<? super Throwable> e) {
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Objects.requireNonNull(function, "No function present");
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public R get(T t) {
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try {
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return function.apply(t);
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} catch (Throwable th) {
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e.accept(th);
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return r;
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}
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}
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}
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public static class V {
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private final Void v;
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V(Void v) {
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Objects.requireNonNull(v, "No value present");
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this.v = v;
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}
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/**
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* 如果有异常忽略，否则计算结果
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*/
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public void exec() {
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try {
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v.exec();
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} catch (Throwable e) {
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e.printStackTrace();
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Optional.ofNullable(ec).ifPresent(c -> c.accept(e));
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return null;
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}
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}
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/**
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* 如果有异常调用自定义异常处理表达式并返回默认值，否则计算结果
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* 如果有异常，调用自定义异常处理表达式
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*
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* @param e 自定义异常处理 lambda 表达式
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* @param c 自定义异常处理 lambda 表达式
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* @return {@link F}
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*/
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public void exec(Consumer<? super Throwable> e) {
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try {
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v.exec();
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} catch (Throwable th) {
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e.accept(th);
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}
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}
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}
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public static class C<T> {
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private final Consumer<? super T> consumer;
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C(Consumer<? super T> consumer) {
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Objects.requireNonNull(consumer, "No value present");
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this.consumer = consumer;
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}
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/**
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* 如果有异常忽略，否则计算结果
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*
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* @param t 要计算的入参
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*/
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public void accept(T t) {
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try {
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consumer.accept(t);
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} catch (Throwable e) {
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e.printStackTrace();
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public F<T, R> trap(Consumer<? super Throwable> c) {
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ec = c;
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return this;
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}
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}
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/**
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* 如果有异常调用自定义异常处理表达式并返回默认值，否则计算结果
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*
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* @param t 要计算的入参
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* @param e 自定义异常处理 lambda 表达式
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*/
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public void accept(T t, Consumer<? super Throwable> e) {
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try {
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consumer.accept(t);
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} catch (Throwable th) {
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e.accept(th);
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}
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}
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@FunctionalInterface
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public interface Void {
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void exec() throws Throwable;
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}
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@SuppressWarnings("ConstantConditions")
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public static void main(String[] args) {
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// 有返回值，无入参
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System.out.println(Try.of(() -> Long.valueOf("s")).trap(System.out::println).get(0L));
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System.out.println(Try.of(() -> Long.valueOf("2w1")).get());
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// 有返回值，有入参
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System.out.println(Try.<String, Long>of(Long::valueOf).trap(e -> System.out.println("exception is: " + e.getMessage())).get("s"));
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ArrayList<String> list = null;
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// 无返回值，无入参
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Try.of(() -> Thread.sleep(-1L)).exec();
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// 无返回值，有入参
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Try.<String>
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of(v -> list.add(0, v))
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.trap(e -> System.out.println("222222" + e.getMessage()))
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.accept("test");
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}
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}
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