无法自动连接 activiti RuntimeService答案

【问题标题】：could not auto wire activiti RuntimeService无法自动连接 activiti RuntimeService
【发布时间】：2019-03-14 12:35:15
【问题描述】：

我正在学习将 activiti 与 spring boot 一起使用但是我遇到了一些错误，并且使用 spring boot 和 java 搜索了太多关于 acitiviti 稳定版本的内容

我正在使用 java 8 和 tomcat 8.0.3

我换了这么多版本的spring和jdk，检查了这么多样本，找不到任何问题我只有一个控制器类和弹簧主类当我运行项目时出现此错误：

 Error creating bean with name 'runtimeServiceBean' defined in class path resource [org/activiti/spring/boot/JpaProcessEngineAutoConfiguration$JpaConfiguration.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.activiti.engine.ProcessEngine]: : Error creating bean with name 'processEngine'defined in class path resource [org/activiti/spring/boot/JpaProcessEngineAutoConfiguration$JpaConfiguration.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.activiti.spring.SpringProcessEngineConfiguration]

这是我的 RestController，除了自动连接之外什么都不做

       import org.activiti.engine.RuntimeService;
        import org.springframework.beans.factory.annotation.Autowired;
        import org.springframework.web.bind.annotation.RestController;

@RestController
public class MyRestController {
    @Autowired
    private RuntimeService runtimeService;
}

这是我的 pom.xml：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
        <activiti.version>5.19.0.2</activiti.version>

    </properties>

    <dependencies>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring-boot-starter-basic</artifactId>
            <version>${activiti.version}</version>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring-boot-starter-rest-api</artifactId>
            <!--<artifactId>spring-boot-starter-rest-api</artifactId>-->
            <version>${activiti.version}</version>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring-boot-starter-jpa</artifactId>
            <version>${activiti.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

【问题讨论】：

你有配置类或xml的bean吗？
请发布您的RuntimeService 课程。
@AnatolyUtkin no
@SudhirOjha 默认处于活动状态
让我们看看stackoverflow.com/questions/29502838/…

标签： java autowired activiti

【解决方案1】：

如果您想在 Spring Boot 2.x 中使用 Activiti，我们建议使用新版本的 Activiti Core 7，可以在此处找到：https://search.maven.org/artifact/org.activiti/activiti-spring-boot-starter/7.0.0.SR1/jar

您可以在此处找到示例： https://github.com/activiti/activiti-examples

【讨论】：

【解决方案2】：

经过这么多搜索后，我意识到 spring boot 2 与 activiti 有问题，然后我将 spring boot 更改为 1.5 版然后我得到新的错误：

'formDataResource': Unsatisfied dependency expressed through field 'formService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'formServiceBean' defined in class path resource [org/activiti/spring/boot/JpaProcessEngineAutoConfiguration$JpaConfiguration.class]: Unsatisfied dependency expressed through method 'formServiceBean' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'processEngine' defined in class path resource [org/activiti/spring/boot/JpaProcessEngineAutoConfiguration$JpaConfiguration.class]: Unsatisfied dependency expressed through method 'processEngine' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springProcessEngineConfiguration' defined in class path resource [org/activiti/spring/boot/JpaProcessEngineAutoConfiguration$JpaConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.activiti.spring.SpringProcessEngineConfiguration]

以及新错误的原因：我在 src/main/resources/processes/ 中没有任何进程

设置一些进程并删除目标文件夹

它对我有用！

【讨论】：

【解决方案3】：

使用 Spring Boot 2.x 你必须添加上面的依赖，并删除另一个。`

   <dependency>
        <groupId>org.activiti</groupId>
        <artifactId>activiti-spring-boot-starter</artifactId>
        <version>7.0.0.SR1</version>
    </dependency>`

【讨论】：