使用 2.9.2 版本後 訪問 swagger 提示

java.lang.NumberFormatException: For input string: ""
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[na:1.8.0_181]
	at java.lang.Long.parseLong(Long.java:601) ~[na:1.8.0_181]
	at java.lang.Long.valueOf(Long.java:803) ~[na:1.8.0_181]
	at io.swagger.models.parameters.AbstractSerializableParameter.getExample(AbstractSerializableParameter.java:412) ~[swagger-models-1.5.20.jar:1.5.20]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181]
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:633) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:678) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:157) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serializeContents(IndexedListSerializer.java:119) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serialize(IndexedListSerializer.java:79) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serialize(IndexedListSerializer.java:18) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:672) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:678) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:157) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:672) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:678) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:157) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeFields(MapSerializer.java:616) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:519) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:31) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:672) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:678) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:157) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:130) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3631) [apihelper-1.0.0-all.jar:na]
	at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:2998) [apihelper-1.0.0-all.jar:na]
	at springfox.documentation.spring.web.json.JsonSerializer.toJson(JsonSerializer.java:38) [springfox-spring-web-2.9.2.jar:null]
	at springfox.documentation.swagger2.web.Swagger2Controller.getDocumentation(Swagger2Controller.java:105) [springfox-swagger2-2.9.2.jar:null]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181]
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) [spring-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) [spring-web-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) [spring-webmvc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) [spring-webmvc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) [spring-webmvc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) [spring-webmvc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) [spring-webmvc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) [spring-webmvc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) [spring-webmvc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897) [spring-webmvc-5.1.5.RELEASE.ja
 

removing old swagger version (1.5.20) and add new one.

In pom.xml

<dependency>
	<groupId>io.springfox</groupId>
	<artifactId>springfox-swagger2</artifactId>
	<version>2.9.2</version>
	<exclusions>
		<exclusion>
			<groupId>io.swagger</groupId>
			<artifactId>swagger-annotations</artifactId>
		</exclusion>
		<exclusion>
			<groupId>io.swagger</groupId>
			<artifactId>swagger-models</artifactId>
		</exclusion>
	</exclusions>
</dependency>
<dependency>
	<groupId>io.springfox</groupId>
	<artifactId>springfox-swagger-ui</artifactId>
	<version>2.9.2</version>
</dependency>
<dependency>
	<groupId>io.swagger</groupId>
	<artifactId>swagger-annotations</artifactId>
	<version>1.5.21</version>
</dependency>
<dependency>
	<groupId>io.swagger</groupId>
	<artifactId>swagger-models</artifactId>
	<version>1.5.21</version>
</dependency>
 

參考

https://www.liangzl.com/get-article-detail-121891.html

https://github.com/springfox/springfox/issues/2265