java - 当我尝试调用我的 Web 服务时，它给出了以下异常，另一方面，如果我尝试打开服务 Url，它的工作正常

Question

我有一个 Web 服务，用于从水晶报表中读取数据。但是当我试图执行它时，它显示“404 not found”。我尝试在浏览器中打开 Web 服务 URL 并在那里打开，这意味着我的 Web 服务 URl 没问题。那么这个错误的原因可能是什么。它给出以下错误

org.apache.axis2.AxisFault: Transport error: 404 Error: Not Found
    at org.apache.axis2.transport.http.HTTPSender.handleResponse(HTTPSender.java:296)
    at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:190)
    at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:75)
    at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:364)
    at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:208)
    at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:448)
    at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:401)
    at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:228)
    at org.apache.axis2.client.OperationClient.execute(OperationClient.java:163)
    at com.citigroup.cai.crservice.ws.CRServiceStub.GenerateCrystalReportWithOptionsAndParameters(CRServiceStub.java:243)
    at com.citigroup.cai.lpp.common.crystal.CRServiceClient.executeCrystalReport(CRServiceClient.java:338)
    at com.citigroup.cai.lpp.ods.obf.csam.CsamReportProcessor.executeCrystalReport(CsamReportProcessor.java:715)
    at com.citigroup.cai.lpp.ods.obf.csam.CsamReportProcessor.processReport(CsamReportProcessor.java:420)
    at com.citigroup.cai.lpp.ods.obf.csam.CsamReportProcessor.processReports(CsamReportProcessor.java:333)
    at com.citigroup.cai.lpp.ods.obf.csam.CsamReportProcessor.process(CsamReportProcessor.java:224)
    at com.citigroup.cai.lpp.ods.obf.csam.CsamReportProcessor.main(CsamReportProcessor.java:1007)