java - log4j2 在servlet3.1下报错NoClassDefFoundError

Question

我的maven配置

        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-web</artifactId>
            <version>2.8.1</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.8.1</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.8.1</version>
            <scope>compile</scope>
        </dependency>

然后我在main函数中调用一切正常

public class Test {
    private static final Logger LOGGER = LogManager.getLogger(Test.class);
    public static void main(String[] args) {
        LOGGER.error("cuo wu");
    }
}

但是在servlet中使用就会报错

@WebServlet(urlPatterns = "/index")
public class Test extends HttpServlet{
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        final Logger LOGGER = LogManager.getLogger();
        LOGGER.error("aefaefe");
        resp.getWriter().write("hi");
    }
}

错误信息是

java.lang.NoClassDefFoundError: org/apache/logging/log4j/LogManager

希望有经验的大佬帮帮忙

Answer 1

プロジェクトのリリースディレクトリに対応するクラスファイルが存在するか確認できます