update at 2021-08-12 23:15:14 by ehlxr
parent
ee6f67a6ab
commit
e76d89f774
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@ -26,9 +26,9 @@ package io.github.ehlxr.http;
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import java.io.IOException;
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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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// import java.net.http.HttpClient;
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// import java.net.http.HttpRequest;
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// import java.net.http.HttpResponse;
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import java.time.Duration;
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/**
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@ -38,34 +38,34 @@ import java.time.Duration;
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public class Main {
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public static void main(String[] args) throws IOException, InterruptedException {
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HttpClient client = HttpClient.newBuilder()
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.version(HttpClient.Version.HTTP_1_1)
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.followRedirects(HttpClient.Redirect.NORMAL)
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.connectTimeout(Duration.ofSeconds(20))
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// .proxy(ProxySelector.of(new InetSocketAddress("proxy.example.com", 80)))
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// .authenticator(Authenticator.getDefault())
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.build();
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HttpRequest request = HttpRequest.newBuilder()
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.uri(URI.create("https://ehlxr.me/"))
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.timeout(Duration.ofMinutes(2))
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.header("Content-Type", "application/json")
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.GET()
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// .POST(HttpRequest.BodyPublishers.ofFile(Paths.get("file.json")))
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.build();
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// Synchronous Example
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// HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
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// System.out.println(response.statusCode());
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// System.out.println(response.body());
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// Asynchronous Example
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client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
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.thenApply(HttpResponse::body)
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.thenAccept(body -> System.out.println("response body is:\n" + body))
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.join();
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// HttpClient client = HttpClient.newBuilder()
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// .version(HttpClient.Version.HTTP_1_1)
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// .followRedirects(HttpClient.Redirect.NORMAL)
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// .connectTimeout(Duration.ofSeconds(20))
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// // .proxy(ProxySelector.of(new InetSocketAddress("proxy.example.com", 80)))
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// // .authenticator(Authenticator.getDefault())
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// .build();
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//
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// HttpRequest request = HttpRequest.newBuilder()
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// .uri(URI.create("https://ehlxr.me/"))
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// .timeout(Duration.ofMinutes(2))
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// .header("Content-Type", "application/json")
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// .GET()
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// // .POST(HttpRequest.BodyPublishers.ofFile(Paths.get("file.json")))
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// .build();
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//
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// // Synchronous Example
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// // HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
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// // System.out.println(response.statusCode());
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// // System.out.println(response.body());
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//
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//
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// // Asynchronous Example
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//
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// client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
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// .thenApply(HttpResponse::body)
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// .thenAccept(body -> System.out.println("response body is:\n" + body))
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// .join();
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}
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}
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@ -0,0 +1,56 @@
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/*
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* The MIT License (MIT)
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*
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* Copyright © 2021 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.test;
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import java.util.ArrayList;
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import java.util.Random;
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/**
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* -Xms600m -Xmx600m -XX:SurvivorRatio=8 -XX:+PrintGCDetails -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/Users/ehlxr/Downloads/hprof/1.hprof
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*
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* @author ehlxr
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* @since 2021-08-08 21:26.
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*/
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public class OOMTest {
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public static void main(String[] args) {
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ArrayList<Picture> list = new ArrayList<>();
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while (true) {
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try {
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Thread.sleep(5);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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list.add(new Picture(new Random().nextInt(100 * 50)));
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}
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}
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}
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class Picture {
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private byte[] pixels;
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public Picture(int length) {
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this.pixels = new byte[length];
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}
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}
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@ -0,0 +1,111 @@
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package io.github.ehlxr.test;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* 有一个学生浏览网页的记录程序，它将记录 每个学生访问过的网站地址。
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* 它由三个部分组成：Student、WebPage和StudentTrace三个类
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* <p>
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* -XX:+HeapDumpBeforeFullGC -XX:HeapDumpPath=/Users/ehlxr/Downloads/hprof/student.hprof
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*
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* @author shkstart
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* @create 16:11
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*/
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public class StudentTrace {
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static List<WebPage> webpages = new ArrayList<WebPage>();
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public static void createWebPages() {
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for (int i = 0; i < 100; i++) {
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WebPage wp = new WebPage();
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wp.setUrl("http://www." + Integer.toString(i) + ".com");
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wp.setContent(Integer.toString(i));
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webpages.add(wp);
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}
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}
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public static void main(String[] args) {
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createWebPages();//创建了100个网页
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//创建3个学生对象
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Student st3 = new Student(3, "Tom");
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Student st5 = new Student(5, "Jerry");
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Student st7 = new Student(7, "Lily");
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for (int i = 0; i < webpages.size(); i++) {
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if (i % st3.getId() == 0)
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st3.visit(webpages.get(i));
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if (i % st5.getId() == 0)
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st5.visit(webpages.get(i));
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if (i % st7.getId() == 0)
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st7.visit(webpages.get(i));
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}
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webpages.clear();
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System.gc();
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}
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}
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class Student {
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private int id;
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private String name;
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private List<WebPage> history = new ArrayList<>();
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public Student(int id, String name) {
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super();
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this.id = id;
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this.name = name;
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}
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public int getId() {
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return id;
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}
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public void setId(int id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public List<WebPage> getHistory() {
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return history;
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}
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public void setHistory(List<WebPage> history) {
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this.history = history;
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}
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public void visit(WebPage wp) {
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if (wp != null) {
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history.add(wp);
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}
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}
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}
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class WebPage {
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private String url;
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private String content;
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public String getUrl() {
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return url;
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}
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public void setUrl(String url) {
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this.url = url;
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}
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public String getContent() {
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return content;
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}
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public void setContent(String content) {
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this.content = content;
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}
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}
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@ -24,6 +24,7 @@
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package io.github.ehlxr.test;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.LinkedHashMap;
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import java.util.List;
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@ -34,7 +35,7 @@ import java.util.stream.Collectors;
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* Created by ehlxr on 2016/12/15.
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*/
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public class Test {
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public static void main(String[] args) {
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public static void main(String[] args) throws IOException {
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// String s0 = "kvill";
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// String s1 = "kvill";
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// String s2 = "kvill";
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@ -84,5 +85,7 @@ public class Test {
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System.out.println(s1 == s2);
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System.out.println(s == t); // false
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System.out.println(s.intern() == t.intern()); // true
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System.in.read();
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}
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}
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