OutOfMemoryError: Java heap space（内存溢出）

报错：

Caused by: java.lang.OutOfMemoryError: Java heap space

at java.util.Arrays.copyOf(Arrays.java:2882)

at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100)

at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:515)

at java.lang.StringBuffer.append(StringBuffer.java:306)

at net.sf.cglib.asm.Type.a(Unknown Source)

at net.sf.cglib.asm.Type.getDescriptor(Unknown Source)

at net.sf.cglib.core.CodeEmitter.emit_field(CodeEmitter.java:468)

at net.sf.cglib.core.CodeEmitter.getfield(CodeEmitter.java:425)

at net.sf.cglib.proxy.Enhancer.emitGetCallbacks(Enhancer.java:796)

at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:511)

at net.sf.cglib.transform.TransformingClassGenerator.generateClass(TransformingClassGenerator.java:33)

at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)

at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)

at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)

at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:285)

at org.springframework.aop.framework.Cglib2AopProxy.getProxy(Cglib2AopProxy.java:201)

at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:110)

at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:490)

at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:365)

at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:325)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:361)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1344)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)

at java.security.AccessController.doPrivileged(Native Method)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)

at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:671)

2013-2-6 13:44:00 org.apache.catalina.core.StandardContext start

eclipse 右键项目名称-> Run as

详细下图（-Xms516M -Xmx516M -XX:MaxNewSize=256m -XX:MaxPermSize=256m）






1 查看内存:

workspace/.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.ui.prefs，在里面加上SHOW_MEMORY_MONITOR=true，重启eclipse，就可以在其左下角看到内存使用情况。

2 修改内存:

方法一：

找到eclipse/eclipse.ini，打开，在其上加上

-vmargs

-Xms128m

-Xmx512m

-XX：permSize=64M

-XX：MaxPermSize=128M

方法二：

打开eclipse，选择Window--Preferences--Java--Installed JREs，在右边选择前面有对勾的JRE，单击Edit，出现一个EditJRE的对话框，在其中的Default VM Arguments框中输入-Xms128m -Xmx512m。

这样设置java虚拟机内存使用最小是128M，最大是512M。