webservices使用MTOM附件抛出的内存溢出

来源：互联网发布：安卓手机优化软件编辑：程序博客网时间：2024/05/22 14:06

1.大家肯定很奇怪MTOM附件传输机制相对于普通的二进制流来说传输占用的资源要相对于少1/3，但是这个时候会抛出异常

这个时候我们大家应该明确这中内存溢出是什么原因导致的

xception in thread "http-apr-8081-exec-3" java.lang.OutOfMemoryError: Java heap space
   at java.util.Arrays.copyOf(Unknown Source)
   at java.lang.AbstractStringBuilder.expandCapacity(Unknown Source)
   at java.lang.AbstractStringBuilder.ensureCapacityInternal(Unknown Source)
   at java.lang.AbstractStringBuilder.append(Unknown Source)
   at java.lang.StringBuilder.append(Unknown Source)
   at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.handleCharacters(StAXStreamConnector.java:327)
   at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:191)
   at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:370)
   at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:349)
   at org.apache.cxf.jaxb.JAXBEncoderDecoder.doUnmarshal(JAXBEncoderDecoder.java:833)
   at org.apache.cxf.jaxb.JAXBEncoderDecoder.access$100(JAXBEncoderDecoder.java:101)
   at org.apache.cxf.jaxb.JAXBEncoderDecoder$2.run(JAXBEncoderDecoder.java:861)
   at java.security.AccessController.doPrivileged(Native Method)
   at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:859)
   at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:693)
   at org.apache.cxf.jaxb.io.DataReaderImpl.read(DataReaderImpl.java:157)
   at org.apache.cxf.interceptor.DocLiteralInInterceptor.handleMessage(DocLiteralInInterceptor.java:110)
   at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
   at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
   at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:237)
   at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:239)
   at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:213)
   at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:131)
   at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:266)
   at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:186)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
   at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:242)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

一般大家遇到内存溢出都会想到是本地的缓存机制和流机制的转换导致的，: Java heap space

像这种对内存溢出一般都是运行环境导致的只需调整tomcat 或者myeclipse的运行内存即可；像上叙的cxf抛出的只需配置tomcat bin下面的catalina.bat内存即可

JAVA_OPTS="-server -Xms800m -Xmx800m -XX:PermSize=64M -XX:MaxNewSize=256m -XX:MaxPermSize=128m -Djava.awt.headless=true "
JAVA_OPTS="-server -Xms768m -Xmx768m -XX:PermSize=128m -XX:MaxPermSize=256m -XX: NewSize=192m -XX:MaxNewSize=384m"
CATALINA_OPTS="-server -Xms768m -Xmx768m -XX:PermSize=128m -XX:MaxPermSize=256m -XX:NewSize=192m -XX:MaxNewSize=384m"

如果是tomcat注册到注册表中启动的话；那么就在注册表中修改

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