# [已解決] Dropwizard – 無法解析配置（無法將類型 ID “http”解析為子類型） > 原文： [https://howtodoinjava.com/dropwizard/solved-dropwizard-failed-parse-configuration-not-resolve-type-id-http-subtype/](https://howtodoinjava.com/dropwizard/solved-dropwizard-failed-parse-configuration-not-resolve-type-id-http-subtype/) 如果您使用 dropwizard 構建 REST API，并且在啟動 Jetty 服務器時遇到此錯誤，則給定的解決方案可能會對您有所幫助。 ## 問題 啟動服務器時，您會收到此錯誤。 ```java >java -jar target\DropWizardExample-0.0.1-SNAPSHOT.jar server default configuration has an error: * Failed to parse configuration at: server.applicationConnectors.[0]; Could not resolve type id 'http' into a subtype of [simple type, class io.dropwizard.jetty.ConnectorFactory]: known type ids = [ConnectorFactory] at [Source: N/A; line: -1, column: -1] (through reference chain: io.dropwizard.Configuration["server"]->io.dropwizard.server.DefaultServerFactory["applicationConnectors"]->java.util.ArrayList[0]) ``` ## 解決方案 上面的異常是因為您在 Maven shade 插件中沒有使用 **`ServicesResourceTransformer`** 。 它將`META-INF/services`中的類重新放置，并將`META-INF/services`資源中的條目追加到單個資源中。 請更正 shade 插件，您會感覺很好。 我的`pom.xml`非常適合我。 ```java <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd; <modelVersion>4.0.0</modelVersion> <groupId>com.howtodoinjava.demo</groupId> <artifactId>DropWizardExample</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>DropWizardExample</name> <url>http://maven.apache.org</url> <properties> <dropwizard.version>1.0.0</dropwizard.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>io.dropwizard</groupId> <artifactId>dropwizard-core</artifactId> <version>${dropwizard.version}</version> </dependency> <dependency> <groupId>io.dropwizard</groupId> <artifactId>dropwizard-client</artifactId> <version>${dropwizard.version}</version> </dependency> </dependencies> <build> <finalName>DropWizardExample-${version}</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>2.1</version> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <mainClass>com.howtodoinjava.rest.App</mainClass> </transformer> </transformers> </configuration> </execution> </executions> </plugin> </plugins> </build> </project> ``` 讓我知道它是否可以解決您的問題。 學習愉快！