IntelliJ更新 - >由lambda获取错误 [英] IntelliJ Update -> get Error by lambda

问题描述

我今天早上更新了我的IntelliJ IDEA，之后我打开了我的项目，突然间我的lambda表达式出错。

首先我得到了这个：

 此语言级别不支持Lambda表达式
  

然后我尝试更改Project Langugage级别，然后将其设置回默认值。现在我得到这个：

 错误：（39,46）-source 1.7 $ b不支持java：lambda表达式$ b（使用-source 8或更高版本来启用lambda表达式）
  

IntelliJ ProjectStructure选项：

这是我的lambda：
我说在我更新IntellJ之前它再次起作用：

  response.getData（）。stream（）。filter（a  - > a .getStart_time（）> WTStandards.getUnixTime（））。forEach（eventList :: add）; 
  

解决方案

您已配置 项目语言级，您还需要配置 模块语言级。有关

您可能还需要更改 Java编译器版本。转到设置对话框（ MacOS 上的⌘ + ，或 Ctrl + Windows操作系统上的> Alt + S ，浏览构建，执行，部署→编译器→Java编译器（或只输入在顶部的搜索框中 javac 并更改Java Compiler版本如下：

I updated my IntelliJ IDEA this morning and after that I openend my project and suddenly i get an error in my lambda expressions.

First i got this one:

Lambda expressions not supported at this language level

and then I tried to change the Project Langugage level and afterwards set it back to default. Now i get this one:

Error:(39, 46) java: lambda expressions are not supported in -source 1.7
  (use -source 8 or higher to enable lambda expressions)

IntelliJ ProjectStructure Options:

This is my lambda: And I say it again before I updated IntellJ it worked:

response.getData().stream().filter(a -> a.getStart_time() > WTStandards.getUnixTime()).forEach(eventList::add);

解决方案

You have configued your Project language level, you need also to configure Module language level. Read more on Configuring Global, Project and Module SDKs.

Go to Project Structure → Module tab (⌘+; on MacOS or Ctrl+Alt+Shift+S on Windows OS) and check Language level of your module there:

You may also need to change the Java compiler version as well. Go to Settings dialog (⌘+, on MacOS or Ctrl+Alt+S on Windows OS), navigate through Build, Execution, Deployment → Compiler → Java Compiler (or just type javac in the search box on top) and change Java Compiler version as below:

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