哪个 Jersey 2.x 库版本可以解决这个问题？
What Jersey 2.x library version will solve this issue?
此错误与库版本有关，但我无法确定。
我正在研究 Crunchify 上的 REST 示例：Link
Link 到项目的副本：Temp Converter Challenge
我正在使用 Java 11，版本 1.8，以 Tomcat 9 作为运行环境。动态网页模块版本为4.0.0.
我收到以下错误：
推荐的错误修复之一使用 Jersey 2.x，而该项目最初是使用 Jersey 1.x 构建的，如果混合使用，两者显然不兼容。这是错误的根本原因，我不知道使用什么版本的Jersey 2.x，尝试了一堆都没有成功。
我更新了 pom 和 web.xml 文件以反映 Jersey 2.x，这也是推荐使用的 Jersey 版本。
pom文件是这样的，注释内容是Jersey 1.x:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
<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>CrunchifyRESTJerseyExample</groupId>
<artifactId>CrunchifyRESTJerseyExample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<!-- <sourceDirectory>src</sourceDirectory> -->
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.1</version>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20170516</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<version>2.13</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>2.13</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
<version>2.26</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>2.13</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>2.13</version>
<scope>provided</scope>
</dependency>
<!-- <dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-bundle</artifactId>
<version>1.19.4</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.19.4</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.19.4</version>
</dependency> -->
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.3.0.1</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
与原来的一些变化：
我说的是目标版本 1.8，而不是 1.7，因为即使指南也建议 1.8，但是如果不在文件中指定它就不能这样做。此外，由于 pom 文件中的错误，我添加了以下依赖项：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.1</version>
</plugin>
我还更改了 xml 内容，因为 servlet 还必须与 Jersey 版本兼容。注释掉的是 Jersey 1.x
的版本
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>CrunchifyRESTJerseyExample</display-name>
<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>
<servlet>
<servlet-name>Jersey REST Service</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.crunchify.restjersey</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- <servlet>
<servlet-name>Jersey Web Application</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet> -->
<servlet-mapping>
<servlet-name>Jersey Web Application</servlet-name>
<url-pattern>/crunchify/*</url-pattern>
</servlet-mapping>
</web-app>
运行 项目本身产生以下结果：
我进一步尝试了对 2020 版 Eclipse 项目的评论中的建议，但无济于事。
我已经查看了许多类似的问题，包括示例下的评论。这只是我到目前为止所查找内容的一部分：
Jersey with Spring Error : Servlet.init() for servlet Jersey REST Service threw exception
Servlet.init() for servlet example threw exception
也许这个例子太旧了，但一切都指向导致它无法正常工作的库版本，我无法弄清楚我最终需要哪个版本。
更新，2022 年 4 月 9 日：
项目堆栈跟踪：
Apr. 09, 2022 2:01:00 P.M. com.sun.jersey.api.core.servlet.WebAppResourceConfig init
INFO: Scanning for root resource and provider classes in the Web app resource paths:
/WEB-INF/lib
/WEB-INF/classes
Apr. 09, 2022 2:01:01 P.M. org.apache.catalina.core.ApplicationContext log
SEVERE: Servlet.init() for servlet [Jersey Web Application] threw exception
java.lang.IllegalArgumentException
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:170)
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:153)
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:424)
at com.sun.jersey.spi.scanning.AnnotationScannerListener.onProcess(AnnotationScannerListener.java:138)
at com.sun.jersey.core.spi.scanning.JarFileScanner.scan(JarFileScanner.java:97)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.f(WebAppResourcesScanner.java:94)
at com.sun.jersey.core.util.Closing.f(Closing.java:71)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:92)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:79)
at com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:80)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.init(WebAppResourceConfig.java:102)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:89)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:74)
at com.sun.jersey.spi.container.servlet.WebComponent.getWebAppResourceConfig(WebComponent.java:668)
at com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:435)
at com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:602)
at com.sun.jersey.spi.container.servlet.WebServletConfig.getDefaultResourceConfig(WebServletConfig.java:87)
at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:699)
at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:674)
at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:205)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:394)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:577)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1134)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1089)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:761)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:887)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)
Apr. 09, 2022 2:01:01 P.M. org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Allocate exception for servlet [Jersey Web Application]
java.lang.IllegalArgumentException
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:170)
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:153)
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:424)
at com.sun.jersey.spi.scanning.AnnotationScannerListener.onProcess(AnnotationScannerListener.java:138)
at com.sun.jersey.core.spi.scanning.JarFileScanner.scan(JarFileScanner.java:97)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.f(WebAppResourcesScanner.java:94)
at com.sun.jersey.core.util.Closing.f(Closing.java:71)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:92)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:79)
at com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:80)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.init(WebAppResourceConfig.java:102)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:89)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:74)
at com.sun.jersey.spi.container.servlet.WebComponent.getWebAppResourceConfig(WebComponent.java:668)
at com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:435)
at com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:602)
at com.sun.jersey.spi.container.servlet.WebServletConfig.getDefaultResourceConfig(WebServletConfig.java:87)
at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:699)
at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:674)
at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:205)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:394)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:577)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1134)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1089)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:761)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:887)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)
如何解决问题
实际上，在克隆您的 GitHub 项目时，我只需要确保 web.xml 中的两个 <servlet-name> 条目完全正确相同。你的不一样，因为你从教程中复制文件后更改了一个，而不是两个。
<servlet-name>Jersey REST Service</servlet-name>
我用 mvn clean package 构建了您的示例，然后为本地安装的 Tomcat 9.0.62 创建了 运行 配置，将 WAR 添加为部署，
启动服务器，它立即运行：
球衣和 ASM 版本
您正在使用超旧的软件版本，例如Jersey 2.13 太旧了，甚至没有包含在 Eclipse Jersey GitHub repository which started 2018 with a first release 2.28-RC1. In order to find the archived legacy GlassFish Jersey 存储库中，我不得不先四处看看。
无论如何，Jersey 2.13，您为项目选择的版本，根据 POM. I see ASM 3.3.1 in your own POM, which according to the ASM release notes 甚至不完全支持 Java 7，在内部使用 ASM 5.0.2。然而，您正在根据您的 Maven 编译器设置编译为 Java 8 字节代码版本。因此，无论 ASM 在您的项目中做什么，您都希望至少使用支持 Java 8 的版本。那至少是 ASM 5.0，所以我建议坚持使用 Jersey 使用的版本 5.0.2。
但这并不能解决您的问题。堆栈跟踪实际上表明 jersey.repackaged.org.objectweb.asm.ClassReader 中存在问题，即在 ASM class 中打包并重新定位到 Jersey 本身。它没有使用您在 POM 中指定的旧版本。我无法在本地重现您的问题。我只是想提一下。
优化 POM
后来，我使用了mvn dependency:analyze来找出您实际使用的依赖项。正如我所说，ASM 未在您的 servlet 中使用。所以你可以删除它。你只需要 Jersey，JSON 和 Jakarta WS-RS API，这是 Jersey 库之一的传递依赖，但你仍然应该在你的 POM 中引用它，如果你访问它的 classes。依赖传递依赖不是干净的 Maven 方式。我还升级了您使用的插件和 JSON 依赖项，然后删除了所有未使用的内容。新的 POM 如下所示：
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>CrunchifyRESTJerseyExample</groupId>
<artifactId>CrunchifyRESTJerseyExample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.10.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.2</version>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20220320</version>
</dependency>
<dependency>
<groupId>jakarta.ws.rs</groupId>
<artifactId>jakarta.ws.rs-api</artifactId>
<version>2.1.6</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>2.35</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
<version>2.35</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>2.35</version>
</dependency>
</dependencies>
</project>
GitHub 请求请求
https://github.com/username917/Temerature-Converter-Challenge/pull/2
此错误与库版本有关，但我无法确定。
我正在研究 Crunchify 上的 REST 示例：Link
Link 到项目的副本：Temp Converter Challenge
我正在使用 Java 11，版本 1.8，以 Tomcat 9 作为运行环境。动态网页模块版本为4.0.0.
我收到以下错误：
推荐的错误修复之一使用 Jersey 2.x，而该项目最初是使用 Jersey 1.x 构建的，如果混合使用，两者显然不兼容。这是错误的根本原因，我不知道使用什么版本的Jersey 2.x，尝试了一堆都没有成功。
我更新了 pom 和 web.xml 文件以反映 Jersey 2.x，这也是推荐使用的 Jersey 版本。
pom文件是这样的，注释内容是Jersey 1.x:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
<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>CrunchifyRESTJerseyExample</groupId>
<artifactId>CrunchifyRESTJerseyExample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<!-- <sourceDirectory>src</sourceDirectory> -->
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.1</version>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20170516</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<version>2.13</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>2.13</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
<version>2.26</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>2.13</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>2.13</version>
<scope>provided</scope>
</dependency>
<!-- <dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-bundle</artifactId>
<version>1.19.4</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.19.4</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.19.4</version>
</dependency> -->
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.3.0.1</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
与原来的一些变化：
我说的是目标版本 1.8，而不是 1.7，因为即使指南也建议 1.8，但是如果不在文件中指定它就不能这样做。此外，由于 pom 文件中的错误，我添加了以下依赖项：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.1</version>
</plugin>
我还更改了 xml 内容，因为 servlet 还必须与 Jersey 版本兼容。注释掉的是 Jersey 1.x
的版本 <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>CrunchifyRESTJerseyExample</display-name>
<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>
<servlet>
<servlet-name>Jersey REST Service</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.crunchify.restjersey</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- <servlet>
<servlet-name>Jersey Web Application</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet> -->
<servlet-mapping>
<servlet-name>Jersey Web Application</servlet-name>
<url-pattern>/crunchify/*</url-pattern>
</servlet-mapping>
</web-app>
运行 项目本身产生以下结果：
我进一步尝试了对 2020 版 Eclipse 项目的评论中的建议，但无济于事。
我已经查看了许多类似的问题，包括示例下的评论。这只是我到目前为止所查找内容的一部分：
Jersey with Spring Error : Servlet.init() for servlet Jersey REST Service threw exception
Servlet.init() for servlet example threw exception
也许这个例子太旧了，但一切都指向导致它无法正常工作的库版本，我无法弄清楚我最终需要哪个版本。
更新，2022 年 4 月 9 日：
项目堆栈跟踪：
Apr. 09, 2022 2:01:00 P.M. com.sun.jersey.api.core.servlet.WebAppResourceConfig init
INFO: Scanning for root resource and provider classes in the Web app resource paths:
/WEB-INF/lib
/WEB-INF/classes
Apr. 09, 2022 2:01:01 P.M. org.apache.catalina.core.ApplicationContext log
SEVERE: Servlet.init() for servlet [Jersey Web Application] threw exception
java.lang.IllegalArgumentException
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:170)
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:153)
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:424)
at com.sun.jersey.spi.scanning.AnnotationScannerListener.onProcess(AnnotationScannerListener.java:138)
at com.sun.jersey.core.spi.scanning.JarFileScanner.scan(JarFileScanner.java:97)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.f(WebAppResourcesScanner.java:94)
at com.sun.jersey.core.util.Closing.f(Closing.java:71)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:92)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:79)
at com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:80)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.init(WebAppResourceConfig.java:102)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:89)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:74)
at com.sun.jersey.spi.container.servlet.WebComponent.getWebAppResourceConfig(WebComponent.java:668)
at com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:435)
at com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:602)
at com.sun.jersey.spi.container.servlet.WebServletConfig.getDefaultResourceConfig(WebServletConfig.java:87)
at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:699)
at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:674)
at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:205)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:394)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:577)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1134)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1089)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:761)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:887)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)
Apr. 09, 2022 2:01:01 P.M. org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Allocate exception for servlet [Jersey Web Application]
java.lang.IllegalArgumentException
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:170)
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:153)
at jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:424)
at com.sun.jersey.spi.scanning.AnnotationScannerListener.onProcess(AnnotationScannerListener.java:138)
at com.sun.jersey.core.spi.scanning.JarFileScanner.scan(JarFileScanner.java:97)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.f(WebAppResourcesScanner.java:94)
at com.sun.jersey.core.util.Closing.f(Closing.java:71)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:92)
at com.sun.jersey.spi.scanning.servlet.WebAppResourcesScanner.scan(WebAppResourcesScanner.java:79)
at com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:80)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.init(WebAppResourceConfig.java:102)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:89)
at com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:74)
at com.sun.jersey.spi.container.servlet.WebComponent.getWebAppResourceConfig(WebComponent.java:668)
at com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:435)
at com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:602)
at com.sun.jersey.spi.container.servlet.WebServletConfig.getDefaultResourceConfig(WebServletConfig.java:87)
at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:699)
at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:674)
at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:205)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:394)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:577)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1134)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1089)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:761)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:887)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1684)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)
如何解决问题
实际上，在克隆您的 GitHub 项目时，我只需要确保 web.xml 中的两个 <servlet-name> 条目完全正确相同。你的不一样，因为你从教程中复制文件后更改了一个，而不是两个。
<servlet-name>Jersey REST Service</servlet-name>
我用 mvn clean package 构建了您的示例，然后为本地安装的 Tomcat 9.0.62 创建了 运行 配置，将 WAR 添加为部署，
启动服务器，它立即运行：
球衣和 ASM 版本
您正在使用超旧的软件版本，例如Jersey 2.13 太旧了，甚至没有包含在 Eclipse Jersey GitHub repository which started 2018 with a first release 2.28-RC1. In order to find the archived legacy GlassFish Jersey 存储库中，我不得不先四处看看。
无论如何，Jersey 2.13，您为项目选择的版本，根据 POM. I see ASM 3.3.1 in your own POM, which according to the ASM release notes 甚至不完全支持 Java 7，在内部使用 ASM 5.0.2。然而，您正在根据您的 Maven 编译器设置编译为 Java 8 字节代码版本。因此，无论 ASM 在您的项目中做什么，您都希望至少使用支持 Java 8 的版本。那至少是 ASM 5.0，所以我建议坚持使用 Jersey 使用的版本 5.0.2。
但这并不能解决您的问题。堆栈跟踪实际上表明 jersey.repackaged.org.objectweb.asm.ClassReader 中存在问题，即在 ASM class 中打包并重新定位到 Jersey 本身。它没有使用您在 POM 中指定的旧版本。我无法在本地重现您的问题。我只是想提一下。
优化 POM
后来，我使用了mvn dependency:analyze来找出您实际使用的依赖项。正如我所说，ASM 未在您的 servlet 中使用。所以你可以删除它。你只需要 Jersey，JSON 和 Jakarta WS-RS API，这是 Jersey 库之一的传递依赖，但你仍然应该在你的 POM 中引用它，如果你访问它的 classes。依赖传递依赖不是干净的 Maven 方式。我还升级了您使用的插件和 JSON 依赖项，然后删除了所有未使用的内容。新的 POM 如下所示：
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>CrunchifyRESTJerseyExample</groupId>
<artifactId>CrunchifyRESTJerseyExample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.10.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.2</version>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20220320</version>
</dependency>
<dependency>
<groupId>jakarta.ws.rs</groupId>
<artifactId>jakarta.ws.rs-api</artifactId>
<version>2.1.6</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>2.35</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
<version>2.35</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>2.35</version>
</dependency>
</dependencies>
</project>
GitHub 请求请求
https://github.com/username917/Temerature-Converter-Challenge/pull/2