1.更改架构

2.增加缓存池

src/main/java/cloud/tianai/captcha/template/slider/CacheSliderCaptchaTemplate.java

@@ -0,0 +1,115 @@
+package cloud.tianai.captcha.template.slider;
+
+import lombok.SneakyThrows;
+import lombok.extern.slf4j.Slf4j;
+
+import java.net.URL;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Queue;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+@Slf4j
+public class CacheSliderCaptchaTemplate implements SliderCaptchaTemplate {
+
+    private final ScheduledExecutorService scheduledExecutor = new ScheduledThreadPoolExecutor(1, new NamedThreadFactory("slider-captcha-queue"));
+    private Queue<SliderCaptchaInfo> queue;
+    private AtomicInteger pos = new AtomicInteger(0);
+    private SliderCaptchaTemplate target;
+    private int size;
+
+
+    public CacheSliderCaptchaTemplate(SliderCaptchaTemplate target, int size) {
+        this.target = target;
+        init(size);
+    }
+
+    private void init(int z) {
+        this.size = z;
+        this.pos = new AtomicInteger(0);
+        queue = new LinkedList<>();
+        // 初始化一个队列扫描
+        scheduledExecutor.scheduleAtFixedRate(() -> {
+            while (pos.get() < this.size) {
+                int count = pos.incrementAndGet();
+                if (count > size) {
+                    return;
+                }
+                SliderCaptchaInfo slideImageInfo = target.getSlideImageInfo();
+                queue.add(slideImageInfo);
+            }
+        }, 0, 100, TimeUnit.MILLISECONDS);
+    }
+
+    @SneakyThrows
+    @Override
+    public SliderCaptchaInfo getSlideImageInfo() {
+        while (true) {
+            int i = pos.get();
+            if (i > 0) {
+                if (pos.compareAndSet(i, i - 1)) {
+                    SliderCaptchaInfo poll = queue.poll();
+                    if (poll != null) {
+                        return poll;
+                    }
+                }
+            }
+            // 休眠100毫秒
+            TimeUnit.MILLISECONDS.sleep(100);
+        }
+    }
+
+
+    public static void main(String[] args) throws InterruptedException {
+        SliderCaptchaTemplate captchaTemplate = new DefaultSliderCaptchaTemplate("webp", "webp", true);
+
+        captchaTemplate = new CacheSliderCaptchaTemplate(captchaTemplate, 20);
+        TimeUnit.SECONDS.sleep(5);
+        for (int i = 0; i < 100; i++) {
+            long start = System.currentTimeMillis();
+            SliderCaptchaInfo info = captchaTemplate.getSlideImageInfo();
+            long end = System.currentTimeMillis();
+            System.out.println("耗时:" + (end - start));
+            TimeUnit.MILLISECONDS.sleep(10);
+        }
+    }
+
+    @Override
+    public void addResource(URL url) {
+        target.addResource(url);
+    }
+
+    @Override
+    public void addTemplate(Map<String, URL> template) {
+        target.addTemplate(template);
+    }
+
+    @Override
+    public void setResource(List<URL> resources) {
+        target.setResource(resources);
+    }
+
+    @Override
+    public void setTemplates(List<Map<String, URL>> imageTemplates) {
+        target.setTemplates(imageTemplates);
+    }
+
+    @Override
+    public void deleteResource(URL resource) {
+        target.deleteResource(resource);
+    }
+
+    @Override
+    public void deleteTemplate(Map<String, URL> template) {
+        target.deleteTemplate(template);
+    }
+
+    @Override
+    public boolean percentageContrast(Float newPercentage, Float oriPercentage) {
+        return target.percentageContrast(newPercentage, oriPercentage);
+    }
+}