无法自动连接activiti RuntimeService

Question

我正在学习将activiti与spring boot结合使用，但我遇到了一些错误，并且搜索了太多关于使用spring boot和java的acitiviti稳定版本的信息

我正在使用java 8和tomcat 8.0.3

我更改了这么多版本的spring和jdk，检查了这么多样本，没有发现任何问题，我只有一个控制器类和spring主类，当我运行项目时，得到了以下错误：

 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，除了自动连线什么也不做

       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>

Answer 1

带Spring靴2。你必须添加上面的依赖项，然后删除另一个`

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

Answer 2

经过多次搜索，我意识到spring boot 2与activiti存在问题，然后我将spring boot更改为1.5版，然后出现新错误：

'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]

新错误的原因是：我在src/main/resources/processs中没有任何进程/

设置一些进程并删除目标文件夹

这对我有用！

Answer 3

如果你想在Spring Boot 2中使用Activiti。x我们建议使用Activiti Core 7的新版本，可在以下位置找到：https://search.maven.org/artifact/org.activiti/activiti-spring-boot-starter/7.0.0.SR1/jar

你可以在这里找到例子：https://github.com/activiti/activiti-examples