U 修复 ClassPathResourceProvider 读到资源为空的情况处理

pom.xml

@@ -104,7 +104,7 @@
                     <execution>
                         <id>attach-sources</id>
                         <goals>
-                            <goal>jar-no-fork</goal>
+                            <goal>jar-no-fork</goal>6
                         </goals>
                     </execution>
                 </executions>

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

@@ -70,7 +70,12 @@ public class DefaultSliderCaptchaResourceManager implements SliderCaptchaResourc
     public InputStream getResourceInputStream(Resource resource) {
         for (ResourceProvider resourceProvider : resourceProviderList) {
             if (resourceProvider.supported(resource.getType())) {
-                return resourceProvider.getResourceInputStream(resource);
+                InputStream resourceInputStream = resourceProvider.getResourceInputStream(resource);
+                if (resourceInputStream == null) {
+                    throw new IllegalArgumentException("滑块验证码 ResourceProvider 读到的图片资源为空,providerName=["
+                            + resourceProvider.getName() + "], resource=[" + resource + "]");
+                }
+                return resourceInputStream;
             }
         }
         throw new IllegalStateException("没有找到Resource [" + resource.getType() + "]对应的资源提供者");

src/main/java/cloud/tianai/captcha/template/slider/provider/AbstractResourceProvider.java

@@ -0,0 +1,24 @@
+package cloud.tianai.captcha.template.slider.provider;
+
+import cloud.tianai.captcha.template.slider.Resource;
+import cloud.tianai.captcha.template.slider.ResourceProvider;
+
+import java.io.InputStream;
+
+/**
+ * @Author: 天爱有情
+ * @date 2021/12/16 16:52
+ * @Description 抽象的ResourceProvider
+ */
+public abstract class AbstractResourceProvider implements ResourceProvider{
+    @Override
+    public InputStream getResourceInputStream(Resource data) {
+        InputStream resourceInputStream = doGetResourceInputStream(data);
+        if (resourceInputStream == null) {
+            throw new IllegalArgumentException("滑块验证码无法读到指定的资源[" + getName() + "]" + data);
+        }
+        return resourceInputStream;
+    }
+
+    public abstract InputStream doGetResourceInputStream(Resource data);
+}

src/main/java/cloud/tianai/captcha/template/slider/provider/ClassPathResourceProvider.java

@@ -1,7 +1,6 @@
 package cloud.tianai.captcha.template.slider.provider;
 
 import cloud.tianai.captcha.template.slider.Resource;
-import cloud.tianai.captcha.template.slider.ResourceProvider;
 
 import java.io.InputStream;
 
@@ -10,12 +9,12 @@ import java.io.InputStream;
  * @date 2021/8/7 16:07
  * @Description classPath
  */
-public class ClassPathResourceProvider implements ResourceProvider {
+public class ClassPathResourceProvider extends AbstractResourceProvider {
 
     public static final String NAME = "classpath";
 
     @Override
-    public InputStream getResourceInputStream(Resource data) {
+    public InputStream doGetResourceInputStream(Resource data) {
         return getClassLoader().getResourceAsStream(data.getData());
     }
 

src/main/java/cloud/tianai/captcha/template/slider/provider/URLResourceProvider.java

@@ -12,13 +12,13 @@ import java.net.URL;
  * @date 2021/8/7 16:05
  * @Description url
  */
-public class URLResourceProvider implements ResourceProvider {
+public class URLResourceProvider implements AbstractResourceProvider {
 
     public static final String NAME = "URL";
 
     @SneakyThrows
     @Override
-    public InputStream getResourceInputStream(Resource data) {
+    public InputStream doGetResourceInputStream(Resource data) {
         URL url = new URL(data.getData());
         return url.openStream();
     }