Getting 404 when trying to access swagger-ui of a native spring-boot app. Fixes #1394.

Author: bnasslahsen

springdoc-openapi-native/src/main/java/org/springdoc/nativex/core/SpringDocHints.java

@@ -1,5 +1,28 @@
+/*
+ *
+ *  *
+ *  *  * Copyright 2019-2020 the original author or authors.
+ *  *  *
+ *  *  * Licensed under the Apache License, Version 2.0 (the "License");
+ *  *  * you may not use this file except in compliance with the License.
+ *  *  * You may obtain a copy of the License at
+ *  *  *
+ *  *  *      https://www.apache.org/licenses/LICENSE-2.0
+ *  *  *
+ *  *  * Unless required by applicable law or agreed to in writing, software
+ *  *  * distributed under the License is distributed on an "AS IS" BASIS,
+ *  *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  *  * See the License for the specific language governing permissions and
+ *  *  * limitations under the License.
+ *  *
+ *
+ */
+
 package org.springdoc.nativex.core;
 
+import java.io.IOException;
+import java.util.Properties;
+
 import io.swagger.v3.core.converter.ModelConverter;
 import io.swagger.v3.core.converter.ModelConverters;
 import io.swagger.v3.core.filter.SpecFilter;
@@ -77,6 +100,7 @@
 import io.swagger.v3.oas.models.parameters.QueryParameter;
 import io.swagger.v3.oas.models.security.Scopes;
 import io.swagger.v3.oas.models.servers.ServerVariables;
+import org.apache.commons.lang3.StringUtils;
 import org.springdoc.api.AbstractOpenApiResource;
 import org.springdoc.api.mixins.SortedOpenAPIMixin;
 import org.springdoc.api.mixins.SortedSchemaMixin;
@@ -106,17 +130,26 @@
 import org.springdoc.core.converters.SchemaPropertyDeprecatingConverter;
 import org.springdoc.ui.AbstractSwaggerWelcome;
 
+import org.springframework.beans.factory.InitializingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.support.PropertiesLoaderUtils;
 import org.springframework.nativex.hint.JdkProxyHint;
 import org.springframework.nativex.hint.ResourceHint;
 import org.springframework.nativex.hint.TypeAccess;
 import org.springframework.nativex.hint.TypeHint;
+import org.springframework.util.AntPathMatcher;
 
 import static org.springdoc.core.Constants.SPRINGDOC_ENABLED;
 
+/**
+ * The type Spring doc hints.
+ * @author bnasslahsen
+ */
 @JdkProxyHint(typeNames = "javax.servlet.http.HttpServletRequest")
 @JdkProxyHint(typeNames = "org.springframework.web.context.request.NativeWebRequest")
 
@@ -263,5 +296,44 @@
 @Lazy(false)
 @Configuration(proxyBeanMethods = false)
 @ConditionalOnProperty(name = SPRINGDOC_ENABLED, matchIfMissing = true)
-public class SpringDocHints {}
+public class SpringDocHints implements InitializingBean {
+
+	/**
+	 * The Swagger ui config properties.
+	 */
+	private final SwaggerUiConfigProperties swaggerUiConfigProperties;
+
+	/**
+	 * The constant SPRINGDOC_CONFIG_PROPERTIES.
+	 */
+	private static final String SPRINGDOC_CONFIG_PROPERTIES = "springdoc.config.properties";
+
+	/**
+	 * The constant SPRINGDOC_SWAGGERUI_VERSION.
+	 */
+	private static final String SPRINGDOC_SWAGGERUI_VERSION= "springdoc.swagger-ui.version";
+
+	/**
+	 * Instantiates a new Spring doc hints.
+	 *
+	 * @param swaggerUiConfigProperties the swagger ui config properties
+	 */
+	public SpringDocHints(SwaggerUiConfigProperties swaggerUiConfigProperties) {
+		this.swaggerUiConfigProperties = swaggerUiConfigProperties;
+	}
+
+	@Override
+	public void afterPropertiesSet() {
+		if (StringUtils.isEmpty(swaggerUiConfigProperties.getVersion())) {
+			try {
+				Resource resource = new ClassPathResource(AntPathMatcher.DEFAULT_PATH_SEPARATOR + SPRINGDOC_CONFIG_PROPERTIES);
+				Properties props = PropertiesLoaderUtils.loadProperties(resource);
+				swaggerUiConfigProperties.setVersion(props.getProperty(SPRINGDOC_SWAGGERUI_VERSION));
+			}
+			catch (IOException e) {
+				throw new RuntimeException(e);
+			}
+		}
+	}
+}