为什么在tomcat6中运行时，axis2的jsps会给编译器错误？

Question

在Ubuntu中，我正在运行Tomcat 6，浏览器底部的Tomcat版本为：

  

Apache Tomcat / 6.0.28

我通过apt-get安装了Tomcat。我制作了一些“hello world”servlet，并确认Tomcat 6似乎正常工作。

由于我的最终目标是创建一个Web服务，我去寻找axis2。我找不到任何用于axis2的Ubuntu软件包，所以我接下来从here下载了axis2 v 1.6.1并将其解压缩到我的主目录中。为了开始，我指出了一个符号链接  / var / lib / tomcat6 / webapps / axis2 - ＆gt; /home/doug/.../axis2-1.6.1/webapp/基于these instructions。

浏览http://localhost:8080/axis2/我希望看到基本的axis2（admin？）页面。相反，我得到一些错误抱怨无法编译axis2的jsp：

Type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: 6 in the generated java file
Only a type can be imported. org.apache.axis2.Constants resolves to a package

An error occurred at line: 7 in the generated java file
Only a type can be imported. org.apache.axis2.context.ConfigurationContext resolves to a package

An error occurred at line: 8 in the generated java file
Only a type can be imported. org.apache.axis2.description.Parameter resolves to a package

An error occurred at line: 9 in the generated java file
Only a type can be imported. org.apache.axis2.transport.http.AxisServlet resolves to a package

An error occurred at line: 10 in the generated java file
Only a type can be imported. org.apache.axis2.transport.TransportListener resolves to a package

An error occurred at line: 31 in the jsp file: /axis2-web/include/httpbase.jsp
ConfigurationContext cannot be resolved to a type
28: 
29:     public void jspInit() {
30:         ServletContext context = this.getServletConfig().getServletContext();
31:         ConfigurationContext configctx = (ConfigurationContext) context.getAttribute(AxisServlet.CONFIGURATION_CONTEXT);
32:         if (configctx != null) {
33:             Parameter parameter = configctx.getAxisConfiguration().getParameter(Constants.HTTP_FRONTEND_HOST_URL);
34:             if (parameter != null) {


An error occurred at line: 31 in the jsp file: /axis2-web/include/httpbase.jsp
ConfigurationContext cannot be resolved to a type
28: 
29:     public void jspInit() {
30:         ServletContext context = this.getServletConfig().getServletContext();
31:         ConfigurationContext configctx = (ConfigurationContext) context.getAttribute(AxisServlet.CONFIGURATION_CONTEXT);
32:         if (configctx != null) {
33:             Parameter parameter = configctx.getAxisConfiguration().getParameter(Constants.HTTP_FRONTEND_HOST_URL);
34:             if (parameter != null) {


An error occurred at line: 31 in the jsp file: /axis2-web/include/httpbase.jsp
AxisServlet.CONFIGURATION_CONTEXT cannot be resolved to a type
28: 
29:     public void jspInit() {
30:         ServletContext context = this.getServletConfig().getServletContext();
31:         ConfigurationContext configctx = (ConfigurationContext) context.getAttribute(AxisServlet.CONFIGURATION_CONTEXT);
32:         if (configctx != null) {
33:             Parameter parameter = configctx.getAxisConfiguration().getParameter(Constants.HTTP_FRONTEND_HOST_URL);
34:             if (parameter != null) {


An error occurred at line: 33 in the jsp file: /axis2-web/include/httpbase.jsp
Parameter cannot be resolved to a type
30:         ServletContext context = this.getServletConfig().getServletContext();
31:         ConfigurationContext configctx = (ConfigurationContext) context.getAttribute(AxisServlet.CONFIGURATION_CONTEXT);
32:         if (configctx != null) {
33:             Parameter parameter = configctx.getAxisConfiguration().getParameter(Constants.HTTP_FRONTEND_HOST_URL);
34:             if (parameter != null) {
35:                 frontendHostUrl = (String) parameter.getValue();
36:             }


An error occurred at line: 33 in the jsp file: /axis2-web/include/httpbase.jsp
Constants.HTTP_FRONTEND_HOST_URL cannot be resolved to a type
30:         ServletContext context = this.getServletConfig().getServletContext();
31:         ConfigurationContext configctx = (ConfigurationContext) context.getAttribute(AxisServlet.CONFIGURATION_CONTEXT);
32:         if (configctx != null) {
33:             Parameter parameter = configctx.getAxisConfiguration().getParameter(Constants.HTTP_FRONTEND_HOST_URL);
34:             if (parameter != null) {
35:                 frontendHostUrl = (String) parameter.getValue();
36:             }


An error occurred at line: 37 in the jsp file: /axis2-web/include/httpbase.jsp
Parameter cannot be resolved to a type
34:             if (parameter != null) {
35:                 frontendHostUrl = (String) parameter.getValue();
36:             }
37:             Parameter hostnameParam = configctx.getAxisConfiguration().getParameter(TransportListener.HOST_ADDRESS);
38:             if (hostnameParam != null) {
39:                 hostname = (String) hostnameParam.getValue();
40:             }


An error occurred at line: 37 in the jsp file: /axis2-web/include/httpbase.jsp
TransportListener.HOST_ADDRESS cannot be resolved to a type
34:             if (parameter != null) {
35:                 frontendHostUrl = (String) parameter.getValue();
36:             }
37:             Parameter hostnameParam = configctx.getAxisConfiguration().getParameter(TransportListener.HOST_ADDRESS);
38:             if (hostnameParam != null) {
39:                 hostname = (String) hostnameParam.getValue();
40:             }


Stacktrace:
    org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
    org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
    org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:439)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
    org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
    org.apache.jsp.axis2_002dweb.index_jsp._jspService(index_jsp.java:59)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

我不应该用Tomcat 6尝试最新的axis2吗？是否有我应该使用的Ubuntu软件包？

Answer 1

令人困惑的JSP编译错误在实际 NoClassDefFoundError的封面下，在您的特定情况下反过来意味着Web应用程序中不存在Axis相关库（JAR文件）运行时类路径。 webapp的/WEB-INF/lib文件夹是webapp的运行时类路径的一部分，因此将它们放在那里。

Answer 2

您所指的快速入门指南并未说明您应该从/ var / lib / tomcat6 / webapps / axis2 - ＆gt; /home/doug /.../axis2-1.6创建“符号链接”。 1 / web应用/”。它说你应该“将axis2.war文件复制到servlet引擎的webapps目录”。获取axis2.war文件有两种方法：

• 下载WAR发行版。
• 下载二进制发行版并在webapp文件夹中执行Ant脚本。

Answer 3

我已经下载了axis2-1.6.2-bin.zip，并使用Window - ＆gt;在eclipse中添加了它。偏好 - ＆gt;网络服务 - ＆gt; Axis2首选项 - ＆gt; Axis2运行时

然后从java类创建webservice。

使用axis2-1.6.2-bin而不是axis2-1.7.3-bin解决了这个问题。