Idea java.lang.RuntimeException: java.lang.OutOfMemoryError: Java heap space 解决

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咱们平时的开发过程中一定会进行本地调试，今天我也是安装了新的idea之后拉了一个比较大的项目进行本地调试的时候报错。报错信息如下：

java: java.lang.OutOfMemoryError: Java heap space
java.lang.RuntimeException: java.lang.OutOfMemoryError: Java heap spaceat com.sun.tools.javac.main.Main.compile(Main.java:559)at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)at org.jetbrains.jps.javac.JavacMain.compile(JavacMain.java:239)at org.jetbrains.jps.javac.ExternalJavacProcess.compile(ExternalJavacProcess.java:189)at org.jetbrains.jps.javac.ExternalJavacProcess.access$400(ExternalJavacProcess.java:28)at org.jetbrains.jps.javac.ExternalJavacProcess$CompilationRequestsHandler$1.run(ExternalJavacProcess.java:262)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at java.lang.Thread.run(Thread.java:750)
Caused by: java.lang.OutOfMemoryError: Java heap spaceat java.util.Arrays.copyOf(Arrays.java:3332)at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:124)at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:448)at java.lang.StringBuffer.append(StringBuffer.java:276)at java.net.URI.appendSchemeSpecificPart(URI.java:1911)at java.net.URI.toString(URI.java:1941)at java.net.URI.<init>(URI.java:669)at java.net.URI.<init>(URI.java:774)at org.jetbrains.jps.javac.ZipFileObject.createUri(ZipFileObject.java:39)at org.jetbrains.jps.javac.ZipFileObject.<init>(ZipFileObject.java:21)at org.jetbrains.jps.javac.DefaultFileOperations$ZipArchive$2.fun(DefaultFileOperations.java:231)at org.jetbrains.jps.javac.DefaultFileOperations$ZipArchive$2.fun(DefaultFileOperations.java:228)at org.jetbrains.jps.javac.Iterators$11.next(Iterators.java:221)at org.jetbrains.jps.javac.Iterators$7.next(Iterators.java:167)at org.jetbrains.jps.javac.Iterators$6.next(Iterators.java:140)at com.sun.tools.javac.api.ClientCodeWrapper.wrapJavaFileObjects(ClientCodeWrapper.java:140)at com.sun.tools.javac.api.ClientCodeWrapper$WrappedJavaFileManager.list(ClientCodeWrapper.java:231)at javax.tools.ForwardingJavaFileManager.list(ForwardingJavaFileManager.java:76)at com.sun.tools.javac.jvm.ClassReader.fillIn(ClassReader.java:2750)at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:2446)at com.sun.tools.javac.jvm.ClassReader.access$000(ClassReader.java:76)at com.sun.tools.javac.jvm.ClassReader$1.complete(ClassReader.java:240)at com.sun.tools.javac.code.Symbol.complete(Symbol.java:574)at com.sun.tools.javac.jvm.ClassReader.completeOwners(ClassReader.java:2458)at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:2435)at com.sun.tools.javac.jvm.ClassReader.access$000(ClassReader.java:76)at com.sun.tools.javac.jvm.ClassReader$1.complete(ClassReader.java:240)at com.sun.tools.javac.code.Symbol.complete(Symbol.java:574)at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1037)at com.sun.tools.javac.code.Symbol$ClassSymbol.members(Symbol.java:978)at com.sun.tools.javac.jvm.ClassReader$AnnotationDeproxy.findAccessMethod(ClassReader.java:1769)at com.sun.tools.javac.jvm.ClassReader$AnnotationDeproxy.deproxyCompound(ClassReader.java:1759)

我们都知道这个错误“java: java.lang.OutOfMemoryError: Java heap space”通常是因为Java虚拟机（JVM）中的堆内存不足导致的。堆内存是JVM用来存储对象实例的区域，当你的应用创建的对象实例占用的空间超过了JVM配置的堆内存大小时，就会抛出这个错误。其实可以通过修改Idea的一些配置，修改配置有两个地方：

项目配置：