java.lang.NumberFormatException: For input string: ""

很多朋友在升级Springfox-Swagger到2.9.2版本后会碰见NumberFormatException异常java.lang.NumberFormatException: For input string: ""

异常信息如下：

  1. java.lang.NumberFormatException: For input string: ""
  2.     at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[na:1.8.0_111]
  3.     at java.lang.Long.parseLong(Long.java:601) ~[na:1.8.0_111]
  4.     at java.lang.Long.valueOf(Long.java:803) ~[na:1.8.0_111]
  5.     at  
  6.     //more....

解决办法是在pom.xml中排除Springfox-Swagger的Swagger-Models的jar包,重新引入，如下：

  1. <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
  2. <dependency>
  3.     <groupId>io.springfox</groupId>
  4.     <artifactId>springfox-swagger2</artifactId>
  5.     <version>2.9.2</version>
  6.     <exclusions>
  7.         <exclusion>
  8.             <groupId>io.swagger</groupId>
  9.             <artifactId>swagger-models</artifactId>
  10.         </exclusion>
  11.     </exclusions>
  12. </dependency>
  14. <!-- https://mvnrepository.com/artifact/io.swagger/swagger-models -->
  15. <dependency>
  16.     <groupId>io.swagger</groupId>
  17.     <artifactId>swagger-models</artifactId>
  18.     <version>1.5.21</version>
  19. </dependency>