Maven内部版本编译错误：无法在项目Maven上执行目标编译(默认-org.apache.maven.plugins:maven-compiler-plugin:3.1:compile

bcs8qyzn  于 2022-09-20  发布在  Maven
关注(0)|答案(6)|浏览(196)

我有一个从git repo派生并克隆到我的eclipse上的maven项目。它是基于Java 8构建。我做的第一件事是执行一个

mvn clean install

但我收到以下失败消息：

[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ Maven ---
[INFO] Deleting /Users/vshukla/git/Prism/target
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ Maven ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/vshukla/git/Prism/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ Maven ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 66 source files to /Users/vshukla/git/Prism/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /Users/vshukla/git/Prism/src/main/java/PrenPost/scanUtility.java:[54,52] diamond operator is not supported in -source 1.5
  (use -source 7 or higher to enable diamond operator)
[ERROR] /Users/vshukla/git/Prism/src/main/java/main/AppUtility.java:[87,86] diamond operator is not supported in -source 1.5
  (use -source 7 or higher to enable diamond operator)
[ERROR] /Users/vshukla/git/Prism/src/main/java/PrenPost/ComparisionUtility.java:[58,52] diamond operator is not supported in -source 1.5
  (use -source 7 or higher to enable diamond operator)
[INFO] 3 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.266 s
[INFO] Finished at: 2017-03-01T12:11:27+05:30
[INFO] Final Memory: 13M/309M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project Maven: Compilation failure: Compilation failure:
[ERROR] /Users/vshukla/git/Prism/src/main/java/PrenPost/scanUtility.java:[54,52] diamond operator is not supported in -source 1.5
[ERROR] (use -source 7 or higher to enable diamond operator)
[ERROR] /Users/vshukla/git/Prism/src/main/java/main/AppUtility.java:[87,86] diamond operator is not supported in -source 1.5
[ERROR] (use -source 7 or higher to enable diamond operator)
[ERROR] /Users/vshukla/git/Prism/src/main/java/PrenPost/ComparisionUtility.java:[58,52] diamond operator is not supported in -source 1.5
[ERROR] (use -source 7 or higher to enable diamond operator)
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1]   http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

但是，下面是该项目的构建路径详细信息，该项目显然已经设置了JRE-8：

并且汇编设置为：

无论我构建项目多少次，我都会收到相同的错误。即使在清理了项目并将其从eclipse中刷新后也没有帮助。请给我带路。

更新：

添加属性后设置maven编译器插件

<properties>
 <maven.compiler.source>1.8</maven.compiler.source>
 <maven.compiler.target>1.8</maven.compiler.target>
</properties>

，

我收到以下错误：

[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ Maven ---
[INFO] Deleting /Users/vshukla/git/Prism/target
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ Maven ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/vshukla/git/Prism/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ Maven ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 66 source files to /Users/vshukla/git/Prism/target/classes
[INFO] -------------------------------------------------------------
[WARNING] COMPILATION WARNING : 
[INFO] -------------------------------------------------------------
[WARNING] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java: /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java uses or overrides a deprecated API.
[WARNING] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java: Recompile with -Xlint:deprecation for details.
[WARNING] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java: Some input files use unchecked or unsafe operations.
[WARNING] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java: Recompile with -Xlint:unchecked for details.
[INFO] 4 warnings 
[INFO] -------------------------------------------------------------
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java:[26,22] package com.apple.eawt does not exist
[ERROR] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java:[93,41] cannot find symbol
  symbol: class Application
[ERROR] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java:[93,67] cannot find symbol
  symbol: variable Application
[INFO] 3 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.591 s
[INFO] Finished at: 2017-03-01T13:09:47+05:30
[INFO] Final Memory: 21M/347M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project Maven: Compilation failure: Compilation failure:
[ERROR] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java:[26,22] package com.apple.eawt does not exist
[ERROR] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java:[93,41] cannot find symbol
[ERROR] symbol: class Application
[ERROR] /Users/vshukla/git/Prism/src/main/java/main/MainUITabbed.java:[93,67] cannot find symbol
[ERROR] symbol: variable Application
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

下面是给出来自MainUITabed类的编译错误的代码片段：

import com.apple.eawt.Application;
public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
        public void run() {
            try {

                Application application = Application.getApplication(); // line 93

                ImageIcon imgicon = new ImageIcon(getClass().getResource(
                        "ICON.jpg"));
                Image img = imgicon.getImage();

                application.setDockIconImage(img);

                MainUITabbed frame = new MainUITabbed();
                frame.setVisible(true);
            } catch (Exception e) {
                e.printStackTrace();

            }
        }
    });
}
Maven

6条答案

按热度按时间
h7wcgrx3

h7wcgrx31#

出现错误的原因是代码不适用于在那里使用的默认编译器。在声明依赖项之后，在根元素结束之前将此代码粘贴到Effect POM中，以更改所使用的编译器。根据需要调整版本。

<dependencies>
...
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
    </plugins>
</build>
赞(0）分享  回复(0）举报  2022-09-20
rqmkfv5c

rqmkfv5c2#

我不认为IDE在这里是相关的。毕竟，您运行的是Maven，而Maven没有允许编译钻石运算符的源代码。因此，我认为您应该配置maven编译器插件本身。

您可以阅读有关此here的内容。但一般情况下，请尝试添加以下属性：

<properties>
 <maven.compiler.source>1.8</maven.compiler.source>
 <maven.compiler.target>1.8</maven.compiler.target>
</properties>

看看它现在是否只在Maven中编译。

赞(0）分享  回复(0）举报  2022-09-20
h22fl7wq

h22fl7wq3#

如果您本地的JDK版本是11或9，10，您的项目的Java源/目标版本是1.8，并且您使用的是org.projectlombok:lombok包，那么您可以尝试将其版本更新到1.16.22或1.18.12，如下所示：

<dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.22</version>
        </dependency>

它刚刚解决了我的问题。

赞(0）分享  回复(0）举报  2022-09-20
ldioqlga

ldioqlga4#

您应该将代码添加到pom.xml中，如下所示：

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
</properties>
赞(0）分享  回复(0）举报  2022-09-20
bq3bfh9z

bq3bfh9z5#

这是一个偶尔会出现的令人恼火的错误，它记下了一些有用的步骤：

无论是由IntelliJ还是命令行完成，从eclipseAngular 编写答案作为基本逻辑都将保持不变

1.RT单击您的项目->Maven->更新项目->选择强制更新->单击确定
1.在属性标签下添加：

<maven.compiler.source>1.8</maven.compiler.source> 
<maven.compiler.target>1.8</maven.compiler.target>

1.在某些情况下，当我们尝试强制更新时，您会开始看到错误：无法从Y路径传输X依赖项，将不会重试解析

在这种情况下，通过CD将其快速修复到.m2/pository文件夹，并运行以下命令：

for /r %i in (*.lastUpdated) do del %i
赞(0）分享  回复(0）举报  2022-09-20
jq6vz3qz

jq6vz3qz6#

在我的例子中，这是由于与OpenJDK 9不兼容造成的(我还没有调查过)。

如果您不需要JDK 9，临时解决方法是将其从您的计算机中清除：

sudo apt-get remove --purge openjdk-9-jdk openjdk-9-jre 
sudo apt-get remove --purge openjdk-9-jdk-headless openjdk-9-jre-headless
赞(0）分享  回复(0）举报  2022-09-20
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