Spring Boot:java.lang.IllegalArgumentException:发现了多个名称为[spring_web]的片段 [英] Spring Boot : java.lang.IllegalArgumentException: More than one fragment with the name [spring_web] was found
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问题描述
我在tomcat 9上部署了春季启动战时得到了这个.我尝试了许多解决方案，例如清理项目以及在stackoverflow中找到的每种可能的解决方案，但是没有用，其中之一在web.xml中提供了绝对的排序，但是它是一个春季启动应用程序，因此我不需要使用web.xml文件.该应用程序已与localhost完美配合，当我在服务器上部署war文件时出现了问题.以下是错误.
I got this while deploying the spring boot war on tomcat 9.I have tried many solutions like cleaning project and every possible solution that i found in stackoverflow, But nothing worked, one of them are providing absolute ordering in web.xml, but its a spring boot application so i don't need to use a web.xml file.The application has been woorking perfectly with the localhost and problem comes when i deploy the war file on server.Below is the error.
23-Aug-2019 04:03:25.139 INFO [Catalina-utility-2] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [/opt/apache-tomcat/webapps/LoopServer.war]
23-Aug-2019 04:03:27.100 SEVERE [Catalina-utility-2] org.apache.catalina.startup.HostConfig.deployWAR Error deploying web application archive [/opt/apache-tomcat/webapps/LoopServer.war]
java.lang.IllegalStateException: Error starting child
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:716)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:695)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:978)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1849)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:773)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1620)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:305)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1144)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1346)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1350)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1328)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/LoopServer]]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:713)
... 25 more
Caused by: java.lang.IllegalArgumentException: More than one fragment with the name [spring_web] was found. This is not legal with relative ordering. See section 8.2.2 2c of the Servlet specification for details. Consider using absolute ordering.
at org.apache.tomcat.util.descriptor.web.WebXml.orderWebFragments(WebXml.java:2257)
at org.apache.tomcat.util.descriptor.web.WebXml.orderWebFragments(WebXml.java:2215)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1127)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:768)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:301)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5048)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
... 26 more
23-Aug-2019 04:03:27.103 INFO [Catalina-utility-2] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/opt/apache-tomcat/webapps/LoopServer.war] has finished in [1,964] ms
下面是我的gradle依赖项配置
Below is my gradle dependency congiguration
group 'com.lss.loopserver'
version '1.0-SNAPSHOT'
buildscript {
ext {
springBootVersion = '2.1.2.RELEASE'
}
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
classpath("javax.servlet:javax.servlet-api:4.0.1")
}
}
apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
apply plugin: 'war'
war {
baseName = 'LoopServer'
version = '0.0.1'
}
sourceCompatibility = 1.8
repositories {
mavenCentral()
jcenter()
maven { url "http://repo.spring.io/libs-snapshot" }
}
configurations {
providedRuntime
compile.exclude module: 'spring-boot-starter-tomcat'
all*.exclude module: 'spring-boot-starter-logging'
}
dependencies {
testImplementation group: 'junit', name: 'junit', version: '4.12'
implementation('org.springframework.boot:spring-boot-starter-actuator')
implementation('org.springframework.boot:spring-boot-starter-data-jpa') {
exclude group: 'com.zaxxer', module: 'HikariCP'
}
implementation('org.springframework.cloud:spring-cloud-starter-oauth2')
implementation('org.springframework.boot:spring-boot-starter-security') {
exclude group: 'org.springframework', module: 'spring-aop'
}
implementation('org.springframework.boot:spring-boot-starter-aop')
implementation("org.springframework.boot:spring-boot-starter-web") {
exclude module: "spring-boot-starter-tomcat"
}
providedCompile('javax.servlet:javax.servlet-api:4.0.1')
compile('javax.el:javax.el-api:3.0.0')
compile('javax.validation:validation-api:2.0.1.Final')
compile('org.hibernate:hibernate-validator:5.4.1.Final')
providedRuntime('org.springframework.boot:spring-boot-starter-tomcat')
implementation('javax.inject:javax.inject:1')
implementation('mysql:mysql-connector-java:6.0.6')
implementation('joda-time:joda-time:2.10.2')
implementation ('com.google.code.gson:gson:2.8.1')
implementation group: 'commons-fileupload', name: 'commons-fileupload', version: '1.3.3'
implementation ('org.apache.commons:commons-io:1.3.2')
runtime('org.springframework.boot:spring-boot-devtools')
runtime('com.h2database:h2')
testImplementation('org.springframework.boot:spring-boot-starter-test')
}
dependencyManagement {
imports {
mavenBom "org.springframework.cloud:spring-cloud-dependencies:Greenwich.RC2"
}
}
bootRun {
sourceResources sourceSets.main
}
application.yml:
application.yml :
server:
port: 8080
servlet:
context-path: /LoopServer
spring:
datasource:
url: jdbc:mysql://${db.host:localhost}:${db.port:3306}/${db.name:loopschool}?useSSL=false
username: ${db.uid:root}
password: ${db.pwd:password}
driver-class-name: com.mysql.cj.jdbc.Driver
tomcat:
test-while-idle: true
validation-query: SELECT 1
type: com.mysql.cj.jdbc.MysqlDataSource
jpa:
properties:
hibernate:
dialect: org.hibernate.dialect.MySQL5Dialect
id:
new_generator_mappings: false
format_sql: true
hibernate:
naming:
physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
ddl-auto: validate
open-in-view: false
application:
name: LoopServer
jmx:
default-domain: LoopServer
main:
allow-bean-definition-overriding: true
devtools:
livereload:
enabled: false
logging:
level:
org:
hibernate:
SQL: DEBUG
type:
descriptor:
sql:
BasicBinder: TRACE
主类:
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
@SpringBootApplication
public class Main extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Main.class);
}
public static void main(String[] args) {
SpringApplication.run(Main.class, args);
}
}
如果有人知道该错误的任何想法，请帮助我.
If anyone know any idea about the error please help me.
推荐答案
最后，我找到了一些解决方案，看来那里存在一些spring依赖冲突.因此，我要做的就是简单地用另一个名称重新创建项目，然后它开始工作，错误也消失了. 另一个可能的解决方案是以正确的方式清理服务器(我没有尝试过，但是我认为它可以工作).
Finally i found some solution, it looks like there was some spring dependency conflicts was there.So what i was done is simple recreated the project with another name, then it started to work and the error also gone. Another possible solution is to clean your server in the right way(I haven't tried that, but i think it will work).
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