求助下,用httpxml发消息,直接写个main函数测试可以发送,用程序触发就有问题

下面这段代码直接运行main函数是可以的，但用程序触发的时候在conn.getOutputStream() 会报空指针异常,请各位大哥大姐们指点下! 谢谢!!public Object sendRequest()
        throws Exception
    {
        BufferedOutputStream writer =null;
        try
        {
            URL url;
            String xmlStr = (String)obj;

            //设置连接时的参数
            //url = new URL(configAttr.getUrl());
            url = new URL("http://10.40.59.14:38071/CMSTest/CMSTest/TestValue");
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            conn.setRequestProperty("Accept", "text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2");
            conn.setRequestProperty("User-Agent", "Jakarta Commons-HttpClient/3.0");
            conn.setRequestProperty("Connection", "keep-alive");
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "text/xml;charset=GBK");
            conn.setDoOutput(true);
            writer = new BufferedOutputStream(conn.getOutputStream());
            // 发送出去给服务端
            writer.write(xmlStr.getBytes("GBK"));

            writer.flush();

            //返回响应流
            return conn.getInputStream();
        }
        catch (IOException e)
        {
            throw new IOException("http request info fail,maybe config paramter is err!");
        }
        finally
        {
            writer.close();
        }

    }

    public static void main(String[] args)
    {
        SendAcceptMessage sm = new SendAcceptMessage();
        try
        {
            String ss = "<Message><ServiceType>2</ServiceType><ActionType>3</ActionType><Body><InfoList><Info><EmailAddr>ddddd@</EmailAddr><Content>消息类型：录像质量报告,镜头id：010201120500000071,镜头名称：WangZhengLenssssssssss1,所属的域：江苏dsdsd,镜头的录像丢失时长：26171,录像丢失时间段：2009-12-28 05:59:00 ~~ 2009-12-28 13:00:01,2009-12-28 23:25:01 ~~ 2009-12-28 23:40:112009-12-28 23:25:01 ~~ 2009-12-28 23:40:11,,录像索引个数：3,帧率：null,码率：129,丢帧率：359,最大帧长：null,平均帧长：null,最小帧长：null,收到的数据总量：null,写入的数据总量：null,接收帧总量：null,写入帧总量：null,写入关键帧总量：null,接收关键帧：null,录像文件大小：null,开始时间：2009-12-23 10:37:12,结束时间：2009-12-26 13:58:08,</Content></Info>InfoList></Body></Message>";
            sm.sendRequest(ss, null);
        }
        catch (Exception e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

解决方案 »

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应该是conn没取到，debug看下这个到底有没有？
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
另外，别是你的http://10.40.59.14:38071/CMSTest/CMSTest/TestValue停掉叻吧？
谢谢各位！这个只是空指针异常，具体异常信息我明天到公司在发下。楼上那位兄弟说的conn连接服务停掉是不会的，这个根本服务根本没有停，包括一些与tomcat 端口冲突，struts过滤器问题都考虑过了，不是这些问题，
这些是抛出的异常信息
class sun.net.www.protocol.http.HttpURLConnection26.12.2009 16:44:35 *DEBUG* [watchthread] TaskManager: daemothreads.intervalrun.time:60 (TaskManager.java, line 1031)
26.12.2009 16:44:36 *DEBUG* [watchthread] TaskManager: daemothreads.intervalrun.time:60 (TaskManager.java, line 1031)
26.12.2009 16:44:36 *DEBUG* [watchthread] TaskManager: daemothreads.intervalrun.time:60 (TaskManager.java, line 1031)
java.lang.NullPointerException
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:781)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:669)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:836)
at com.huawei.nvs.sys.alarmgw.sendaccept.SendAcceptMessage.sendRequest(SendAcceptMessage.java:95)
at com.huawei.nvs.sys.alarmgw.parse.HttpXMLParse.requestDisposal(HttpXMLParse.java:69)
at com.huawei.nvs.service.record.qualityreport.SendQualityReportMsg.NruUpAogwMsg(SendQualityReportMsg.java:339)
at com.huawei.nvs.ps.console.ajax.record.policy.ModifyQueryRecordPolicyAction.exec(ModifyQueryRecordPolicyAction.java:78)
at com.huawei.nvs.ps.common.ConsoleAction.execute(ConsoleAction.java:83)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:404)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:267)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:229)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:221)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:150)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:48)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:123)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:167)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:105)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:83)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:207)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:74)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:127)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(ProfilingActivationInterceptor.java:107)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:206)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept