通过OutOfMemory web服务上传350 web附件时出现的axis2问题

Question

我试图通过SOAP (启用了MTOM )上传大小为350 MB的附件，并将附件发送到axis2 web服务。

Axis2 web服务被配置为在服务器端启用MTOM。并且在服务器端也启用了缓存。Axis2.xml中有以下配置：

<parameter name="enableMTOM">true</parameter>

和

<parameter name="cacheAttachments">true</parameter>
<parameter name="attachmentDIR">C:\Temp\TempWS</parameter>
<parameter name="sizeThreshold">8000</parameter>

​

​

tomcat中的最大堆大小设置为3000 MB(参见上面的屏幕截图)，但web服务仍然将我抛到异常下面：

Java heap space
java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOfRange(Arrays.java:2694)
    at java.lang.String.<init>(String.java:203)
    at java.lang.StringBuffer.toString(StringBuffer.java:561)
    at org.apache.axiom.util.base64.Base64Utils.encode(Base64Utils.java:81)
    at org.apache.axiom.om.impl.llom.OMTextImpl.getText(OMTextImpl.java:264)
    at org.apache.axiom.om.impl.llom.OMElementImpl.getText(OMElementImpl.java:786)
    at org.apache.axis2.databinding.utils.BeanUtil.deserialize(BeanUtil.java:334)
    at org.apache.axis2.databinding.utils.BeanUtil.deserialize(BeanUtil.java:407)
    at org.apache.axis2.databinding.utils.BeanUtil.processObject(BeanUtil.java:682)
    at org.apache.axis2.databinding.utils.BeanUtil.ProcessElement(BeanUtil.java:630)
    at org.apache.axis2.databinding.utils.BeanUtil.deserialize(BeanUtil.java:562)
    at org.apache.axis2.rpc.receivers.RPCUtil.processRequest(RPCUtil.java:153)
    at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:188)
    at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:102)
    at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
    at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:114)
    at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:173)
    at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:173)
    at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:144)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
    at com.csdcsystems.amanda.servlet.AmandaAxisServlet.service(AmandaAxisServlet.java:103)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)

我的问题：

1. 有人能帮我理解我错过了什么吗？在tomcat配置中是否需要有额外的设置？
2. 如何支持通过axis2 web服务上传/下载大型附件？

注意：服务被配置为将byte[]作为服务的输入/输出参数。

Answer 1

尝试将堆空间增加到

C:\tomcat-7.0.57\bin>set JAVA_OPTS=-Xmx1g
C:\tomcat-7.0.57\bin>startup.bat

这将运行具有1GB堆空间的jvm，如果仍然抛出异常，请尝试2g。

如果您通过eclipse运行tomcat，请转到“运行配置”，选择您的项目，打开“参数”选项卡，并将-Xmx1g添加到"VM参数“中。