java.lang.ClassNotFoundException: jakarta.servlet.Filter

由于webfulx 没有拦截器需要用过滤器替换 因此增加如下代码

/**
 * @author lq
 * @date 2022/8/30 10:30
 */
@Slf4j
@Component
@Order(Integer.MIN_VALUE + 1)
public class LoginInterceptor implements WebFilter {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
        System.out.println(1);
        return null;
    }
}

启动报错,报错如下

Caused by: java.lang.NoClassDefFoundError: jakarta/servlet/Filter
	at java.base/java.lang.ClassLoader.defineClass1(Native Method) ~[na:na]
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1013) ~[na:na]
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639) ~[na:na]
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
	at java.base/java.lang.ClassLoader.defineClass1(Native Method) ~[na:na]
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1013) ~[na:na]
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639) ~[na:na]
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
	at java.base/java.lang.ClassLoader.defineClass1(Native Method) ~[na:na]
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1013) ~[na:na]
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681) ~[na:na]
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639) ~[na:na]
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
	at java.base/java.lang.Class.getDeclaredMethods0(Native Method) ~[na:na]
	at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3458) ~[na:na]
	at java.base/java.lang.Class.getDeclaredMethods(Class.java:2557) ~[na:na]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:465) ~[spring-core-6.0.4.jar:6.0.4]
	... 21 common frames omitted
Caused by: java.lang.ClassNotFoundException: jakarta.servlet.Filter
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[na:na]
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
	... 52 common frames omitted

Disconnected from the target VM, address: '127.0.0.1:50965', transport: 'socket'

Process finished with exit code 1

解决方案

maven增加如下配置

<dependency>
	<groupId>jakarta.servlet.jsp.jstl</groupId>
	<artifactId>jakarta.servlet.jsp.jstl-api</artifactId>
	<version>2.0.0</version>
</dependency>

成功启动

Connected to the target VM, address: '127.0.0.1:51271', transport: 'socket'

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v3.0.2)

2023-02-20T15:24:07.893+08:00  INFO 19264 --- [           main] com.lqjava.demo.DemoApplication          : Starting DemoApplication using Java 19.0.2 with PID 19264 (C:\dev\proejct\git-project\demo\target\classes started by q in C:\dev\proejct\git-project\demo)
2023-02-20T15:24:07.896+08:00  INFO 19264 --- [           main] com.lqjava.demo.DemoApplication          : No active profile set, falling back to 1 default profile: "default"
2023-02-20T15:24:08.847+08:00  INFO 19264 --- [           main] o.s.b.web.embedded.netty.NettyWebServer  : Netty started on port 8080
2023-02-20T15:24:08.854+08:00  INFO 19264 --- [           main] com.lqjava.demo.DemoApplication          : Started DemoApplication in 1.224 seconds (process running for 1.924)

jar包下载链接 (可选)

https://search.maven.org/artifact/jakarta.servlet.jsp.jstl/jakarta.servlet.jsp.jstl-api/2.0.0/jar


点击前往下载