Question

实际上我是Web服务开发的新手。我无法使用eclipse oxygen，tomcat 7，jersey library运行简单的动态Web服务应用程序。我知道有很多解决方案可供我尝试过，但没有什么对我有用，我无法找出我犯错误的地方。

这是我的班级。

package book;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
@Path("/book")
public class Book {
@GET
@Produces(MediaType.TEXT_XML)
public String sayHelloXML(){
    String response = "<?xml version='1.0'?>"+
            "<hello>Hello XML</hello>";
    return response;
}
}

这是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>WSdemo</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>JAVA WS</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>

<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>book</param-value>
</init-param>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>
<servlet-name>JAVA WS</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>

</web-app>

我收到一些错误，但我无法解决

Nov 07, 2017 1:35:11 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre1.8.0_151\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jre1.8.0_151/bin/server;C:/Program Files/Java/jre1.8.0_151/bin;C:/Program Files/Java/jre1.8.0_151/lib/amd64;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Users\sesatuser\.dnx\bin;C:\Program Files\Microsoft DNX\Dnvm\;C:\Program Files\Microsoft SQL Server\120\Tools\Binn\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files (x86)\Microsoft Emulator Manager\1.0\;C:\Program Files (x86)\nodejs\;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit\;C:\Program Files\TortoiseSVN\bin;C:\Program Files (x86)\Java\jdk1.8.0_144;;C:\Users\sesatuser\Desktop;;.
Nov 07, 2017 1:35:12 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:WSdemo' did not find a matching property.
Nov 07, 2017 1:35:12 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Nov 07, 2017 1:35:12 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Nov 07, 2017 1:35:12 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1031 ms
Nov 07, 2017 1:35:12 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Nov 07, 2017 1:35:12 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.47
Nov 07, 2017 1:35:16 PM org.apache.catalina.util.SessionIdGenerator createSecureRandom
INFO: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [152] milliseconds.
Nov 07, 2017 1:35:16 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(C:\Users\sesatuser\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\WSdemo\WEB-INF\lib\el-api-2.2.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/el/Expression.class
Nov 07, 2017 1:35:16 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(C:\Users\sesatuser\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\WSdemo\WEB-INF\lib\javax.servlet-api-3.0.1.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
Nov 07, 2017 1:35:16 PM org.apache.catalina.startup.ContextConfig processAnnotationsJar
SEVERE: Unable to process Jar entry [module-info.class] from Jar [jar:file:/C:/Users/sesatuser/eclipse-workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp1/wtpwebapps/WSdemo/WEB-INF/lib/javax.json-api-1.1.jar!/] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
    at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:133)
    at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2134)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2010)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1976)
    at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1961)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1319)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Nov 07, 2017 1:35:20 PM org.apache.catalina.startup.ContextConfig processAnnotationsJar
SEVERE: Unable to process Jar entry [module-info.class] from Jar [jar:file:/C:/Users/sesatuser/eclipse-workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp1/wtpwebapps/WSdemo/WEB-INF/lib/yasson-1.0.jar!/] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
    at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:133)
    at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2134)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2010)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1976)
    at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1961)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1319)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Nov 07, 2017 1:35:20 PM org.apache.catalina.startup.ContextConfig processAnnotationsJar
SEVERE: Unable to process Jar entry [module-info.class] from Jar [jar:file:/C:/Users/sesatuser/eclipse-workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp1/wtpwebapps/WSdemo/WEB-INF/lib/javax.json.bind-api-1.0.jar!/] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
    at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:133)
    at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2134)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2010)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1976)
    at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1961)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1319)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Nov 07, 2017 1:35:20 PM org.apache.catalina.startup.ContextConfig processAnnotationsJar
SEVERE: Unable to process Jar entry [module-info.class] from Jar [jar:file:/C:/Users/sesatuser/eclipse-workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp1/wtpwebapps/WSdemo/WEB-INF/lib/javax.json-1.1.jar!/] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
    at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:133)
    at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2134)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2010)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1976)
    at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1961)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1319)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Nov 07, 2017 1:35:21 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Nov 07, 2017 1:35:21 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Nov 07, 2017 1:35:21 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 9679 ms

我正在使用此网址

http://localhost:8080/WSdemo/rest/book/sayHelloXML/

浏览器

中的

输出

Answer 1

日志显示某些依赖项尚未解析（例如javax.json-api-1.1.jar，yasson-1.0.jar）尝试在Classpath中添加这些Jars。此外，您还没有为函数sayHelloXML（）提供映射'/ sayHelloXML'。

Answer 2

从这个错误页面Tomcat should skip or handle module-info.class when scanning for annotations，您可以看到错误是相同的：

SEVERE: Unable to process Jar entry [module-info.class] from Jar [file:...../javax.json-1.1.0-M1.jar] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:54)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:174)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:83)

工作正在进行中：

虽然Tomcat代码可以独立于BCEL更新，但我们必须这样做知道代码＆＃34; 19＆＃34;意味着要跳过多少个字节（对于简单的情况，如果可以忽略）。

和

19是CONSTANT_Module，20是CONSTANT_Package。

我根本没有看到扫描模块信息注释的理由。   无论如何，不希望@WebServlet，@ WebFilter或@WebListener。

和

看起来我们只需要跳过2个字节。需要改变首先在Commons BCEL中实现，然后再移植到Tomcat。

最后在以下版本中修复了错误：

BCEL已更新且后端口已完成。

已修复：



主干为9.0.0.M18以后



8.5.x for 8.5.12以后



8.0.x for 8.0.42以后



7.0.x 7.0.76 以后

因此，如果您想坚持使用Tomcat 7，请升级到至少版本7.0.76。

使用tomcat的Web服务无法正常工作

2 个答案: