@ApiParam annotation NumberFormatException bug

[haochencheng]

when i use @ApiParam with an int param but without use example .

like that :
@ApiParam(value = "1 ios 2 android") Integer channel

it will thorw NumberFormatException
java.lang.NumberFormatException: For input string: "" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Long.parseLong(Long.java:601) at java.lang.Long.valueOf(Long.java:803) at io.swagger.models.parameters.AbstractSerializableParameter.getExample(AbstractSerializableParameter.java:412) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
i saw the source code is
`
@JsonProperty("x-example")
public Object getExample() {
if (this.example == null) {
return null;
} else {
try {
if ("integer".equals(this.type)) {
return Long.valueOf(this.example);
}

and the default example value is "" .
public @interface ApiParam {
boolean required() default false;
String example() default "";
}
`

should it return 0 when the param type is int ?

[ly641921791]

I also encountered the same problem, I found that swagger-models-1.5.21.jar has solved this problem, like this

    @JsonProperty("x-example")
    public Object getExample() {
        if (example == null || example.isEmpty()) {
            return example;
        }
        ....
    }

So you can exclude the 1.5.20 version of the jar and import the 1.5.21 version of the jar, like this

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

But I have not tried this method because I don't know if there will be version compatibility issues. So I fork this code and modify this line of code to compile it. I think you can do the same to solve the problem.

[Simon3]

See springfox/springfox#2265 for more info.