我正在尝试使用 Maven 和 Tomcat 7 构建可执行 WAR/JAR。 该项目包含 Websocket 和 REST API。
为此,我将以下插件添加到 pom.xml 文件中:
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
<id>tomcat-run</id>
<goals>
<goal>exec-war-only</goal>
</goals>
<phase>package</phase>
<configuration>
<path>/TransSafeGWService</path>
<enableNaming>false</enableNaming>
<finalName>standalone.jar</finalName>
<charset>utf-8</charset>
</configuration>
</execution>
</executions>
在那之后,由于 REST 服务可以工作但 Websocket 服务没有,我向插件添加了其他依赖项:
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
<id>tomcat-run</id>
<goals>
<goal>exec-war-only</goal>
</goals>
<phase>package</phase>
<configuration>
<path>/TransSafeGWService</path>
<enableNaming>false</enableNaming>
<finalName>standalone.jar</finalName>
<charset>utf-8</charset>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat7-websocket</artifactId>
<version>7.0.67</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-util</artifactId>
<version>7.0.67</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-coyote</artifactId>
<version>7.0.67</version>
</dependency>
</dependencies>
</plugin>
使用该依赖项,我得到了这种错误:
java.lang.NoSuchMethodError: org.apache.catalina.connector.RequestFacade.upgrade(Ljava/lang/Class;)Lorg/apache/coyote/http11/upgrade/servlet31/HttpUpgradeHandler;
at org.apache.tomcat.websocket.server.UpgradeUtil.doUpgrade(UpgradeUtil.java:238)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
在这种情况下可能是什么问题?
在完整的 pom.xml 文件下面:
<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.ti.white</groupId>
<artifactId>TransSafeGWService</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>TransSafeGWService</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-servlet</artifactId>
<version>1.18</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<dependency>
<groupId>org.codehaus.jettison</groupId>
<artifactId>jettison</artifactId>
<version>1.3.7</version>
</dependency>
<dependency>
<groupId>javax.websocket</groupId>
<artifactId>javax.websocket-api</artifactId>
<version>1.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<webXml>WebContent\WEB-INF\web.xml</webXml>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
<id>tomcat-run</id>
<goals>
<goal>exec-war-only</goal>
</goals>
<phase>package</phase>
<configuration>
<path>/TransSafeGWService</path>
<enableNaming>false</enableNaming>
<finalName>standalone.jar</finalName>
<charset>utf-8</charset>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat7-websocket</artifactId>
<version>7.0.67</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-util</artifactId>
<version>7.0.67</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-coyote</artifactId>
<version>7.0.67</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
按照要求,下面是web.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>TransSafeGWService</display-name>
<servlet>
<servlet-name>Data Acquisition Service</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.ti.transafe.acquisitionService</param-value>
</init-param>
<init-param>
<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Data Acquisition Service</servlet-name>
<url-pattern>/Service/* </url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
最佳答案
我认为您的问题可能与错误的 servlet api 版本有关。 Tomcat 7 支持 3.0 及以下版本,但您使用的 servlet 似乎是 3.1 版本。
您的异常显示 this method not found这只是 servlet 3.1 或更高版本的一部分。
Since:
Servlet 3.1
即使您没有在问题中包含 web.xml,堆栈跟踪也会导致此解决方案
请查看您的 web.xml 是否有此声明。
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
更新:
您正在为 tomcat7-maven-plugin 使用 2.1 版它使用 tomcat 版本 7.0.37。然后在依赖项中,您尝试使用具有不同版本 7.0.67 的 tomcat jar。两者必须使用相同的版本。
你有两种可能:
要么将所有jar的版本设置为7.0.37
您可以使用最新版本2.2 of tomcat7-maven-plugin并将属性用于 setting the tomcat version .我会 更喜欢这个。也许您也可以使用 2.1 设置此属性。你可以 试试吧。
关于java - 使用 Maven、Tomcat 7 和 Websocket 构建可执行的 War/Jar,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34926756/