Maven权威指南学习问题(1)

最新推荐文章于 2025-05-21 17:01:37 发布

book_sangmin214

最新推荐文章于 2025-05-21 17:01:37 发布

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本文记录了使用Maven编译simple-weather项目时遇到的错误，主要问题是源代码使用了Java 1.3不支持的泛型特性。文章提供了详细的错误堆栈跟踪，并指出了解决方案，即更新源代码的兼容性设置以启用泛型支持。

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在看simple-weather实例的时候，mvn install出现了一个错误：

C:\opensource\maven2space\simple-weather>mvn install -e
+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building simple-weather
[INFO]    task-segment: [install]
[INFO] ------------------------------------------------------------------------
[INFO] [resources:resources {execution: default-resources}]
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 2 resources
[INFO] [compiler:compile {execution: default-compile}]
[INFO] Compiling 5 source files to C:\opensource\maven2space\simple-weather\target\classes
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Compilation failure
C:\opensource\maven2space\simple-weather\src\main\java\org\sonatype\mavenbook\weather\YahooParser.java:[27,3] generics are not supported in -source 1.3
(use -source 5 or higher to enable generics)
Map<String,String> uris = new HashMap<String,String>();

[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.BuildFailureException: Compilation failure
C:\opensource\maven2space\simple-weather\src\main\java\org\sonatype\mavenbook\weather\YahooParser.java:[27,3] generics are not supported in -source 1.3
(use -source 5 or higher to enable generics)
Map<String,String> uris = new HashMap<String,String>();

        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:715)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
        at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
C:\opensource\maven2space\simple-weather\src\main\java\org\sonatype\mavenbook\weather\YahooParser.java:[27,3] generics are not supported in -source 1.3
(use -source 5 or higher to enable generics)
Map<String,String> uris = new HashMap<String,String>();

        at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:516)
        at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
        ... 17 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Sun Sep 19 10:35:51 CST 2010
[INFO] Final Memory: 8M/19M
[INFO] ------------------------------------------------------------------------
C:\opensource\maven2space\simple-weather>
C:\opensource\maven2space\simple-weather>java -version
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b07)
Java HotSpot(TM) Client VM (build 17.0-b17, mixed mode, sharing)