Activity5入门案例

导入依赖

<dependency>
    <groupId>org.activiti</groupId>
    <artifactId>activiti-spring-boot-starter-basic</artifactId>
    <version>5.21.0</version>
</dependency>

<dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>        </dependency>        <!-- 数据库连接池 -->        <dependency>            <groupId>com.alibaba</groupId>            <artifactId>druid</artifactId>            <version>1.0.5</version>        </dependency>        <dependency>            <groupId>org.mybatis.spring.boot</groupId>            <artifactId>mybatis-spring-boot-starter</artifactId>            <version>1.1.1</version></dependency>

添加配置

spring:  datasource:    type: com.alibaba.druid.pool.DruidDataSource    url: jdbc:mysql://127.0.0.1:3306/crowdfunding    username: root    password: root    driver-class-name: com.mysql.jdbc.Drivermybatis:  mapperLocations: classpath*:mybatis/mapper-*.xml  typeAliasesPackage: cn.ishangit.**.bean

编写测试程序

package cn.ishangit.helloactivity5;import org.activiti.engine.ProcessEngine;import org.activiti.engine.RepositoryService;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.test.context.junit4.SpringRunner;@RunWith(SpringRunner.class)@SpringBootTestpublic class HelloActivity5ApplicationTests {    @Autowired    private ProcessEngine processEngine ;    @Autowired    private RepositoryService repositoryService ;    @Test    public void contextLoads() {        System.out.println( processEngine );        System.out.println(repositoryService);    }}

遇到的错误1：

java.lang.NoClassDefFoundError: org/apache/ibatis/annotations/Mapper

原因：因为我们的流程框架引用的是mybatis版本与springboot-starter引用的版本不一致

解决：把activity的依赖放到springboot-starter的后面

遇到的错误2：

FileNotFoundException: class path resource [processes/] cannot be resolved to URL because it does not exist

解决：在resources目录下创建processes文件夹

遇到的错误3：

Invocation of init method failed; nested exception is java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxyatorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1708)

原因：springboot1和springboot2部分自动配置类的包不同

解决：修改springboot版本为1.x的版本

结果

最后运行成功可以看到activity5框架帮我们生成了自带的25张表。