请教各位osworkflow新建工作流初始化报错!

Question

Workflow wf = new BasicWorkflow((String) session.getAttribute("username"));
wf.setConfiguration(workflowConfiguration);
……

Answer 1

sgdb:
      老兄能不能讲具体一点！

Answer 2

可能不是Configuration的问题刚才仔细看了一下，你的examples是什么？是xml文件么？ 
如果是你的xml文件并且就在newworkflow的目录下，那么试试：
id = wf.initialize("example.xml", 1, null);

Answer 3

sgdb:
     老兄我现在把我的配制文件及相关代码详细列出请指点！谢谢！
我的开发环境为:
              jbuilder9.0+jboss4.0
工程名为testworkflow.jpx
      webapp(web应用程序名):
           testworkflowweb
新建工作流：newworkflow.jsp代码：(登录时新建了用户放在session.getAttribute("username")中)
            Workflow wf = new BasicWorkflow((String) session.getAttribute("username"));
            DefaultConfiguration configs = new DefaultConfiguration();
            wf.setConfiguration(configs);
            id = wf.initialize("example",1, null);
            out.print("得到工作流实例为："+Long.toString(id)+"<br><br>");
osworkflow配置文件如下：
   在 testworkflow\testworkflowweb\WEB-INF目录下有如下文件
   1.workflows.xml
   2.osworkflow.xml
   3.example.xml
    
 osworkflow.xml的内容:
               <osworkflow>
              <persistence       class="com.opensymphony.workflow.spi.memory.MemoryWorkflowStore"/>
  <factory class="com.opensymphony.workflow.loader.XMLWorkflowFactory">
    <property key="resource" value="workflows.xml" />
  </factory> 
</osworkflow>workflows.xml的内容：
<workflows>
  <workflow name="example" type="resource" location="example.xml"/>
</workflows>example.xml的内容：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE workflow PUBLIC 
                 "-//OpenSymphony Group//DTD OSWorkflow 2.7//EN"
                 "http://www.opensymphony.com/osworkflow/workflow_2_7.dtd">
<workflow>
  <initial-actions>
    <action id="1" name="Start Workflow">
      <results>
        <unconditional-result old-status="Finished" status="Queued" step="1"/>
      </results>
    </action>
  </initial-actions>
  <steps>
    <step id="1" name="First Draft">
      <actions>
        <action id="1" name="Start First Draft">
          <restrict-to>
            <conditions>
              <condition type="class">
                <arg name="class.name">
                   com.opensymphony.workflow.util.StatusCondition
                </arg>
                <arg name="status">Queued</arg>
              </condition>
            </conditions>
          </restrict-to>
          <pre-functions>
            <function type="class">
              <arg name="class.name">
                 com.opensymphony.workflow.util.Caller
              </arg>
            </function>
          </pre-functions>
          <results>
            <unconditional-result old-status="Finished" status="Underway" 
                                           step="1"  owner="${caller}"/>
          </results>
        </action>
        <action id="2" name="Finish First Draft">
          <restrict-to>
            <conditions type="AND">
              <condition type="class">
                <arg name="class.name">
                    com.opensymphony.workflow.util.StatusCondition
                </arg>
                <arg name="status">Underway</arg>
              </condition>
              <condition type="class">
                <arg name="class.name">
                  com.opensymphony.workflow.util.AllowOwnerOnlyCondition
                </arg>
              </condition>
            </conditions>
          </restrict-to>
          <results>
            <unconditional-result old-status="Finished" status="Queued" step="2"/>
          </results>
        </action>
      </actions>
    </step>
    <step id="2" name="finished" />
  </steps>
</workflow>