IntelliJ IDEA“无法解析符号”和“无法解析方法”

IntelliJIDEA 不能解析内置 JVM 类型和方法的常见原因是什么？例如，当我将鼠标移到 String上时，工具提示说“无法解析符号‘ String’”。就好像 IntelliJ 不知道 JVM 在哪里一样。

顺便说一下，我正在运行 OSX10.6.6。一切正常，直到我今早更新了系统。

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最佳答案

Most likely JDK configuration is not valid, try to remove and add the JDK again as I've described in the related question here.

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First check if you have configured JDK correctly:

  • Go to File->Project Structure -> SDKs
  • your JDK home path should be something like this: /Library/Java/JavaVirtualMachine/jdk.1.7.0_79.jdk/Contents/Home
  • Hit Apply and then OK

Secondly check if you have provided in path in Library's section

  • Go to File->Project Structure -> Libraries
  • Hit the + button
  • Add the path to your src folder
  • Hit Apply and then OK

This should fix the problem

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For me, IntelliJ could autocomplete packages, but never seemed to admit there were actual classes at any level of the hierarchy. Neither re-choosing the SDK nor re-creating the project seemed to fix it.

What did fix it was to delete the per-user IDEA directory ( in my case ~/.IntelliJIdea2017.1/) which meant losing all my other customizations... But at least it made the issue go away.

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I was facing the same problem when import projects into IntelliJ.

for in my case first, check SDK details and check you have configured JDK correctly or not.

Go to File-> Project Structure-> platform Settings-> SDKs

Check your JDK is correct or not.

enter image description here

Next, I Removed project from IntelliJ and delete all IntelliJ and IDE related files and folder from the project folder (.idea, .settings, .classpath, dependency-reduced-pom). Also, delete the target folder and re-import the project.

The above solution worked in my case.

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For me, I had to remove the intellij internal sdk and started to use my local sdk. When I started to use the internal, the error was gone.

my sdks

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First of all you should try File | Invalidate Caches and if it doesn't help, delete IDEA system directory. Then re-import the Maven project and see if it helps.

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For me ,

File -> project structure -> Project Language Level (11) selection worked. Local variable syntax for lambda paramters.

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In my case, cloning repo from the remote was the easiest way to solve this issue.

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I tried almost everything but nothing was helping with the ibm jdk 1.8. to fix this issue. then I found an article from https://youtrack.jetbrains.com/issue/IDEA-279214/Cannot-resolve-symbol-String-when-using-IBM-JDK-180 and it worked like charm!!!

so sharing original help credit goes to @Serge Barano. incase anybody needs and not able to able to resolve the issue using previous solutions like me.

according to the article answer is:

IBM JDK has a weird layout and the jar with the String class is in bin directory for some reason:

d:\dev\ibm_sdk80\jre\bin\default\jclSC180\vm.jar

If you add it to the JDK classpath in IntelliJ IDEA, the issue should resolve: enter image description here


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