Swagger 阅读器抛出 java.lang.NoSuchMethodError

如何解决Swagger 阅读器抛出 java.lang.NoSuchMethodError

我正在尝试在我的项目 (Sparkjava) 中创建 API 文档。 [我用这篇文章][1]我写了这个解析器：

import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.swagger.jaxrs.Reader;
import io.swagger.models.*;
import spark.Route;

import java.util.Arrays;
import java.util.List;

public class SwaggerParser {

    public static String getSwaggerjson(List<Route> routes) throws JsonProcessingException {
        Swagger swagger = getSwagger(routes);
        return swaggerToJson(swagger);
    }

    private static Swagger getSwagger(List<Route> routes) {
        Swagger swagger = new Swagger();
        swagger.info(new Info().description("User API")
                .version("V1.0")
                .title("Some random api for testing")
                .contact(new Contact().name("Serol").url("https://serol.ro")));
        swagger.schemes(Arrays.asList(Scheme.HTTP,Scheme.HTTPS));
        swagger.consumes("application/json");
        swagger.produces("application/json");
        swagger.tag(new Tag().name("swagger"));

        Reader reader = new Reader(swagger);

        for (Route route : routes) {
            try {
                reader.read(route.getClass());
            }catch (Throwable throwable){
                System.out.println(throwable);
            }
        }

        return reader.getSwagger();
    }

    public static String swaggerToJson(Swagger swagger) throws JsonProcessingException {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setSerializationInclusion(Include.NON_EMPTY);
        return objectMapper.writeValueAsstring(swagger);
    }

}

它适用于我的测试应用程序，但不适用于实际项目。我为此编写了初始化测试：

import com.fasterxml.jackson.core.JsonProcessingException;
import com.healthgorilla.portal.server.labnetwork.api.GetordersAPI;
import com.healthgorilla.portal.server.labnetwork.route.GetordersRoute;
import org.junit.Test;

import java.util.Collections;

import static org.junit.Assert.*;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class SwaggerParserTest {
    @Test
    public void name() throws JsonProcessingException {
        GetordersAPI api = mock(GetordersAPI.class);
        when(api.exec()).thenReturn("");

        String swaggerjson = SwaggerParser.getSwaggerjson(Collections.singletonList(new GetordersRoute(api)));
        
        assertNotNull(swaggerjson);
    }
}

它抛出一个异常：

java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.introspect.AnnotatedMember.getType(Lcom/fasterxml/jackson/databind/type/TypeBindings;)Lcom/fasterxml/jackson/databind/JavaType;

但在测试项目中它有效 [1]：https://serol.ro/posts/2016/swagger_sparkjava/

编辑：

我发现了冲突。它在项目中更新了 jckson 版本。我改变了我的swagger依赖

<!-- swagger -->
        <dependency>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-core</artifactId>
            <version>1.6.2</version>
            <exclusions>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-core</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-databind</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-annotations</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-jaxrs</artifactId>
            <version>1.6.2</version>
            <exclusions>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-core</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-databind</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-annotations</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

但这无济于事。有我的 Jackson 依赖项：

<dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.11.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.11.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.11.2</version>
        </dependency>

解决方法

潜在的问题是您的依赖项（包括可传递的）与您的 swagger 版本不兼容。 我不知道您使用的是哪个构建系统，但在 maven 中可以使用

mvn dependency:tree

https://maven.apache.org/plugins/maven-dependency-plugin/tree-mojo.html

在gradle中你可以尝试gradle -q dependencies --configuration scm，更多在https://docs.gradle.org/current/userguide/viewing_debugging_dependencies.html

尝试检查您的依赖项及其版本。