问题描述

myeclipse 报错 org.eclipse.core.resources

我的myeclipse在运行时总是报错
Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
具体错误如下
java.lang.NullPointerException
at org.eclipse.wst.jsdt.internal.compiler.flow.UnconditionalFlowInfo.markAsDefinitelyNonNull(UnconditionalFlowInfo.java:1192)
at org.eclipse.wst.jsdt.internal.compiler.ast.FieldReference.analyseAssignment(FieldReference.java:81)
at org.eclipse.wst.jsdt.internal.compiler.ast.Assignment.analyseCode(Assignment.java:59)
at org.eclipse.wst.jsdt.internal.compiler.ast.Block.analyseCode(Block.java:43)
at org.eclipse.wst.jsdt.internal.compiler.ast.IfStatement.analyseCode(IfStatement.java:92)
at org.eclipse.wst.jsdt.internal.compiler.ast.MethodDeclaration.analyseCode(MethodDeclaration.java:94)
at org.eclipse.wst.jsdt.internal.compiler.ast.AbstractMethodDeclaration.analyseCode(AbstractMethodDeclaration.java:112)
at org.eclipse.wst.jsdt.internal.compiler.ast.FunctionExpression.analyseCode(FunctionExpression.java:73)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:63)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.LocalDeclaration.analyseCode(LocalDeclaration.java:87)
at org.eclipse.wst.jsdt.internal.compiler.ast.MethodDeclaration.analyseCode(MethodDeclaration.java:94)
at org.eclipse.wst.jsdt.internal.compiler.ast.AbstractMethodDeclaration.analyseCode(AbstractMethodDeclaration.java:112)
at org.eclipse.wst.jsdt.internal.compiler.ast.FunctionExpression.analyseCode(FunctionExpression.java:73)
at org.eclipse.wst.jsdt.internal.compiler.ast.FieldReference.analyseAssignment(FieldReference.java:92)
at org.eclipse.wst.jsdt.internal.compiler.ast.Assignment.analyseCode(Assignment.java:59)
at org.eclipse.wst.jsdt.internal.compiler.ast.MethodDeclaration.analyseCode(MethodDeclaration.java:94)
at org.eclipse.wst.jsdt.internal.compiler.ast.AbstractMethodDeclaration.analyseCode(AbstractMethodDeclaration.java:112)
at org.eclipse.wst.jsdt.internal.compiler.ast.FunctionExpression.analyseCode(FunctionExpression.java:73)
at org.eclipse.wst.jsdt.internal.compiler.ast.Expression.analyseCode(Expression.java:223)
at org.eclipse.wst.jsdt.internal.compiler.ast.MessageSend.analyseCode(MessageSend.java:77)
at org.eclipse.wst.jsdt.internal.compiler.ast.CompilationUnitDeclaration.analyseCode(CompilationUnitDeclaration.java:164)
at org.eclipse.wst.jsdt.internal.compiler.Compiler.process(Compiler.java:598)
at org.eclipse.wst.jsdt.internal.compiler.Compiler.compile(Compiler.java:356)
at org.eclipse.wst.jsdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:311)
at org.eclipse.wst.jsdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:168)
at org.eclipse.wst.jsdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:248)
at org.eclipse.wst.jsdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:58)
at org.eclipse.wst.jsdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:291)
at org.eclipse.wst.jsdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:199)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:627)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:170)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:201)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:253)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:256)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:309)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:341)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:140)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:238)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

Session Data :
eclipse.buildId=unknown
java.version=1.6.0_13
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=zh_CN
Command-line arguments: -os win32 -ws win32 -arch x86

哪位兄弟知道，请给小弟指路，感谢。

解决方案

重点是java.lang.NullPointerException，定是代码中有指向为空的变量/对象申明。
报错详细信息一般是没时间细细看的，看最前面的关键错误，常见的错误就几种，熟了点很容易解决了

解决方案二：

java.lang.NullPointerException主要是这句空指针异常

解决方案三：

是不是你的servlet没配置好？！

解决方案四：

空指针异常，还提示你的资源加载不上，你检查一下啊xml文件的配置，还有jar库，如果资源都存在，那就检查一下配置的你自己要输入的那些名称等，看有没有输错。

解决方案五：

找这种错很不好找的，应该是自带的文件问题