运行 应用程序时出现 WildFly 错误 --java.lang.ClassNotFoundException: javax.naming.InitialContext

Question

我正在使用 JSPs 和 WildFly 9.0.2.Final，条件如下：

1. 一个JSP文件（test.jsp）正在访问Test.java 文件.

2. Test.java 文件是 testclient.jar 的一部分，并且已部署为模块.

3. test.jsp 文件是 Test.ear 的一部分并且已成功部署但是从 test.jsp:

   访问 Test.java 文件时出现以下错误

   09:50:35,036 ERROR [io.undertow.request] (default task-1) UT005023: Exception handling request to /test/test.jsp: javax.servlet.ServletException: java.lang.NoClassDefFoundError: javax/naming/InitialContext
   at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
   at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:777)
   at org.apache.jsp.test_jsp._jspService(test_jsp.java:70)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:69)
   Caused by: java.lang.NoClassDefFoundError: javax/naming/InitialContext
   at com.testmodule.pojo.Test.getDbConnection(Test.java:12)
   at org.apache.jsp.test_jsp._jspService(test_jsp.java:58)
   ... 34 more
   Caused by: java.lang.ClassNotFoundException: javax.naming.InitialContext from [Module "testclient:main" from local module loader @707f7052 (finder: local module finder @11028347 (roots: /wildfly-9.0.2.Final/modules,/wildfly-9.0.2.Final/modules/system/layers/base))]
   at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:205)
   at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:455)
   at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:404)
   

这些是 test.jsp 文件的内容 test.ear:

<%@page import="com.testmodule.pojo.Test"%>
<% try {
    System.out.println(" Going to call getDbConnection method of 'Test' class. This 'Test' class shall be "
        +" part of testclient.jar. testclient.jar shall be deployed as a module --- module add --name=testclient --resources=~/Downloads/lib/test/testclient.jar");
    System.out.println("This file test.jsp shall be present in test.ear...'jboss-deployment-structure.xml' shall be present in "
        +" in META-INF directory of test.ear with entry as -- <dependencies><module name=\"testclient\" export=\"true\" /> </dependencies>");
    new Test().getDbConnection();
} catch(Exception e){
    e.printStackTrace();
} %>

这些是 Test.java 的内容 testclient.jar:

package com.testmodule.pojo;

import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;

public class Test { 
    public void getDbConnection(){
        try{
            Context context = new InitialContext(new Properties());
        } catch(Exception e){}
    }
}

Answer 1

我认为您需要向模块添加依赖项： javax.api。

尝试添加

<dependencies>
    <module name="javax.api"/>
</dependencies>

给你的module.xml