Jboss 操作（"add"）失败

Question

我是 Jboss 的新人。我正在尝试使用 Jboss 启动 Spring 引导，但遇到了 postgres 驱动程序问题。当我启动服务器时弹出以下错误并崩溃。

  > 13:00:47,681 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([
        ("subsystem" => "datasources"),
        ("data-source" => "DigitalFarm_DS")
    ]) - failure description: {
        "WFLYCTL0412: Required services that are not installed:" => ["jboss.jdbc-driver.postgresql"],
        "WFLYCTL0180: Services with missing/unavailable dependencies" => [
            "org.wildfly.data-source.DigitalFarm_DS is missing [jboss.jdbc-driver.postgresql]",
            "jboss.driver-demander.java:jboss/datasources/DigitalFarmDS is missing [jboss.jdbc-driver.postgresql]"
        ]
    }
    13:00:47,682 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([
        ("subsystem" => "datasources"),
        ("data-source" => "DigitalFarm_DS")
    ]) - failure description: {
        "WFLYCTL0412: Required services that are not installed:" => [
            "jboss.jdbc-driver.postgresql",
            "jboss.jdbc-driver.postgresql"
        ],

还有我的独立文件

    <datasources>
                <datasource jndi-name="java:jboss/datasources/DigitalFarmDS" pool-name="DigitalFarm_DS" enabled="true" use-java-context="true" statistics-enabled="true">
                    <connection-url>jdbc:postgresql://localhost:5432/DigitalFarm</connection-url>
                    <driver>postgresql</driver>
                    <security>
                        <user-name>_db_username</user-name>
                        <password>_db_password_</password>
                    </security>
                </datasource>
                <datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true" use-java-context="true" statistics-enabled="${wildfly.datasources.statistics-enabled:${wildfly.statistics-enabled:false}}">
                    <connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE</connection-url>
                    <driver>h2</driver>
                    <security>
                        <user-name>sa</user-name>
                        <password>sa</password>
                    </security>
                </datasource>
                <drivers>
                    <driver name="postgresql" module="org.postgresql">
                        <driver-class>org.postgresql.Driver</driver-class>
                        <xa-datasource-class>org.postgresql.xa.PGXADataSource</xa-datasource-class>
                    </driver>
                    <driver name="h2" module="com.h2database.h2">
                        <xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
                    </driver>
                </drivers>
            </datasources>

我正在为 wildfly 使用此依赖项

    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.apache.tomcat.embed</groupId>
                    <artifactId>tomcat-embed-websocket</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

请帮助我。你遇到过这样的问题吗？

Answer 1

服务器在您的 class 路径中找不到“postgresql”的驱动程序 jar 的问题。

        "WFLYCTL0180: Services with missing/unavailable dependencies" => [
        "org.wildfly.data-source.DigitalFarm_DS is missing [jboss.jdbc-driver.postgresql]"

实际上，Jboss中的Datasource子系统默认在应用程序class路径中获取驱动程序class，通过驱动程序部分的模块名称加载。在 Jboss 中，您可以通过两种方式加载模块：

首先：使用应用部署库

如果您使用 deploymen-scanner (JBOSS_APP//.<[=43)，请将 Postgres 驱动程序 jar 添加到您的应用程序部署资源=]>) 结构如下：

app-deployment.war
 |_WEB-INF
  |_lib
   |_postgresql-42.2.5.jar (example version)

二：外部模块

在您的 jboss 实例中创建一个与您的案例中的模块名称匹配的新模块，它应该是这样的：

modules
|_org
 |_postgresql
  |_main
   |_postgresql-42.2.5.jar
   |_module.xml

其中module.xml描述了这个新模块的资源（驱动jar文件），例子：

<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.7" name="org.postgresql">

    <resources>
        <resource-root path="postgresql-42.2.5.jar.jar"/>
    </resources>

    <dependencies>
        <module name=""/>
      ...
    </dependencies>

</module>

最后，您需要将模块添加到 jboss-deployment-structure.xml (app-deployment/WEB-INF/jboss-deployment-structure.xml) 以被视为外部依赖，同时部署应用程序，示例：

<?xml version='1.0' encoding='UTF-8'?>
<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.2">
    <deployment>
         <dependencies>
            ...
             <module name="org.postgresql"/>
            ...
        </dependencies>

    </deployment>         
    
</jboss-deployment-structure>

当需要外部管理驱动程序时使用此解决方案。

Jboss 操作（"add"）失败

Jboss Operation("add") failed

java

postgresql

jboss

wildfly