Question

首先将Activiti嵌入API类型的应用程序以在该应用程序中使用是可行的，还是应该独立运行Activiti？

以下错误是由于bean定义引起的，但我不确定应在何处定义bean，以及如何定义-如果这是版本6的正确方法。Springhboot2的标准是在Java中注释bean，而不是在xml上下文中< / p>

git config --global user.name "github userID"
git clone "URL from github link copied earlier"

代码：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-04-10 21:17:43.924 ERROR 19516 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Field runtimeService in ma.cvmeeting.workflow.WorkflowApplication$MyrestController required a bean of type 'org.activiti.engine.RuntimeService' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type 'org.activiti.engine.RuntimeService' in your configuration.


Process finished with exit code 0

pom.xml：

import org.activiti.engine.RuntimeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
public class WorkflowApplication {

public static void main(String[] args) {
    SpringApplication.run(WorkflowApplication.class, args);
}



@RestController
public static class MyrestController{


    @Autowired
    private RuntimeService runtimeService;


    @GetMapping("/start-process")
    public String startProcess() {

        runtimeService.startProcessInstanceByKey("Potulerauneoffre");
        return "Process started. Number of currently running"
                + "process instances = "
                + runtimeService.createProcessInstanceQuery().count();
    }
}

Answer 1

将引擎嵌入基于Spring的应用程序中时，有两种初始化引擎的方法： 1.）让spring为您初始化它，以便您无需任何配置即可立即使用所有引擎服务。这需要activiti-spring-boot-starter作为依赖项。 2.）您可以自行初始化引擎，并提供@Configuration类中的服务bean。为此，您仅需要activiti-engine核心作为依赖项

由于尝试第二种方法而导致应用程序找不到RuntimeService的原因，请在pom.xml中添加以下依赖项并删除引擎

<dependency>
    <groupId>org.activiti</groupId>
    <artifactId>activiti-spring-boot-starter</artifactId>
</dependency>

您应该遵循documentation以获得更多帮助。

Answer 2

如果您打算使用spring boot 2.x和使用新的API，我们建议使用activiti 7 core。如果您想参与新的API和项目计划，这是个好时机

Answer 3

您可以编写一个@Configuration类并定义Activiti服务，如下所示：

@Configuration
public class ActivityConfig {

    @Autowired
    DataSource dataSource;

    @Bean
    public DataSourceTransactionManager getTransactionManager() {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean
    public ProcessEngineConfigurationImpl getProcessEngineConfiguration() {
        SpringProcessEngineConfiguration res = new SpringProcessEngineConfiguration();
        res.setDataSource(dataSource);
        res.setTransactionManager(getTransactionManager());
        return res;
    }

    @Bean
    public ProcessEngineFactoryBean getProcessEngine() {
        ProcessEngineFactoryBean res = new ProcessEngineFactoryBean();
        res.setProcessEngineConfiguration(getProcessEngineConfiguration());
        return res;
    }

    @Bean
    public RepositoryService getRepositoryService() throws Exception {
        return getProcessEngine().getObject().getRepositoryService();
    }

    @Bean
    public FormService getFormService() throws Exception {
        return getProcessEngine().getObject().getFormService();
    }

    @Bean
    public TaskService getTaskService() throws Exception {
        return getProcessEngine().getObject().getTaskService();
    }

    @Bean
    public RuntimeService getRuntimeService() throws Exception {
        return getProcessEngine().getObject().getRuntimeService();
    }

    @Bean
    public HistoryService getHistoryService() throws Exception {
        return getProcessEngine().getObject().getHistoryService();
    }

    @Bean
    public IdentityService getIdentityService() throws Exception {
        return getProcessEngine().getObject().getIdentityService();
    }
}

难以将Activiti配置为Springboot应用程序API

3 个答案: