3

我使用 Weld SE 创建了一个简单的 JavaSE 应用程序。我尝试使用 gradle run 运行它会引发异常：

:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:runmai 17, 2016 12:55:55 AM org.jboss.weld.bootstrap.WeldStartup <clinit>
INFO: WELD-000900: 2.3.4 (Final)
Exception in thread "main" java.lang.IllegalStateException: WELD-ENV-002009: Weld SE container cannot be initialized - no bean archives found
        at org.jboss.weld.environment.se.Weld.createDeployment(Weld.java:690)

        at org.jboss.weld.environment.se.Weld.initialize(Weld.java:570)
        at br.com.alexpfx.crawler.run.Main.main(Main.java:14)
 FAILED
1 result found for 'bean-discovery-mode'Finding with Options: Case Insensitive

y
bean-discovery-mode
1 found
Find






Replace in current buffer
Replace
Replace All
Gradle: runFile 0Project 0No Issuessrc\main\resources\META-INF\beans.xml10:1
CRLFUTF-8XML1 update

我的理解是它找不到 beans.xml 文件。但它在 src/main/resources/META-INF/beans.xml 中：

<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
bean-discovery-mode="all"
        version="1.1">


</beans>

我的主要课程是：

package br.com.alexpfx.crawler.run;
import org.jboss.weld.environment.se.*;
import javax.enterprise.inject.*;
import javax.inject.*;
import br.com.alexpfx.crawler.*;
public class Main {

    @Inject
    private @Named("SuperMarket") Crawler crawler;


    public static void main(String[] args) {
        Weld weld = new Weld();
        WeldContainer container = weld.initialize();
        Main main = container.instance().select(Main.class).get();
        main.run();
        weld.shutdown();
    }


    public void run() {

        System.out.println (crawler);

    }
}

构建 gradle 文件是：

apply plugin: 'java'
apply plugin: 'application'



repositories{
    mavenCentral()
}


dependencies{
    // http://mvnrepository.com/artifact/org.jsoup/jsoup
    compile group: 'org.jsoup', name: 'jsoup', version: '1.9.1'

    // http://mvnrepository.com/artifact/org.jboss.weld.se/weld-se-core
    compile group: 'org.jboss.weld.se', name: 'weld-se-core', version: '2.3.4.Final'



}

sourceCompatibility = '1.8'
version = '1.0'
mainClassName = 'br.com.alexpfx.crawler.run.Main'
4

3 回答 3

6

问题是gradle run不会为您的应用程序构建 jar 文件。它只是编译类并使用类路径上的资源目录运行主类（gradle --info run请亲自查看）。Weld 需要一个bean 存档，它是一个包含 .jar 文件的 jar 文件META-INF/beans.xml或一个包含WEB-INF/classes/META-INF/beans.xml. beans.xml仅仅在类路径上是不够的。

为了解决这个问题，由于您使用的是应用程序插件，只需执行 agradle installDist并在build/install/myapp/bin.

于 2017-03-09T20:19:46.027 回答
2

我已经尝试过@drenedo 提供的解决方案（对不起，我没有足够的评论声誉），以下代码适用于我：

sourceSets.main.resources {
    exclude 'META-INF/beans.xml'
}
classes {
    doLast{
        copy {
            from('src/main/resources') { include 'META-INF/beans.xml' }
            into "$buildDir/classes/java/main/"
        }
    }
}

我对以下代码的用途有些困惑。由于src/main/resources/META-INF/beans.xmland$buildDir/classes/main/META-INF/beans.xml不是目录，因此此代码会导致错误。所以我只是简单地删除它：

inputs.dir 'src/main/resources/META-INF/beans.xml'
outputs.dir "$buildDir/classes/main/META-INF/beans.xml"

@J回答的解决方案。Lenthe 也适用于我。

你也可以试试这个bean-discovery-problems-when-using-weld-se-with-gradle-application-plugin：

task copyResources(type: Copy) {
    from "${projectDir}/src/main/resources"
    into "${buildDir}/classes/java/main"
}
processResources.dependsOn copyResources

Gradle 4+ 对类使用不同的输出目录，因此请记住使用${buildDir}/classes/java/main而不是${buildDir}/classes/main.

于 2018-11-27T02:29:16.177 回答
0

我通过在 build.gradle 中添加 sourceSets.main.resources 解决了这个问题：

sourceSets.main.resources {
   exclude 'META-INF/beans.xml'
}
  classes {
   inputs.dir 'src/main/resources/META-INF/beans.xml'
   outputs.dir "$buildDir/classes/main/META-INF/beans.xml"
} << {
   copy {
      from('src/main/resources') { include 'META-INF/beans.xml' }
      into "$buildDir/classes/main/"
   }
}

使用给定的示例：

apply plugin: 'java'
apply plugin: 'application'



repositories{
    mavenCentral()
}


dependencies{
    // http://mvnrepository.com/artifact/org.jsoup/jsoup
    compile group: 'org.jsoup', name: 'jsoup', version: '1.9.1'

    // http://mvnrepository.com/artifact/org.jboss.weld.se/weld-se-core
    compile group: 'org.jboss.weld.se', name: 'weld-se-core', version: '2.3.4.Final'
}

sourceSets.main.resources {
   exclude 'META-INF/beans.xml'
}
  classes {
   inputs.dir 'src/main/resources/META-INF/beans.xml'
   outputs.dir "$buildDir/classes/main/META-INF/beans.xml"
} << {
   copy {
      from('src/main/resources') { include 'META-INF/beans.xml' }
      into "$buildDir/classes/main/"
   }
}

sourceCompatibility = '1.8'
version = '1.0'
mainClassName = 'br.com.alexpfx.crawler.run.Main'
于 2017-05-11T19:53:15.550 回答