maven项目如下:

配置好数据库,和activiti的配置之后,开始执行流程部署

package com.yuanqiao.first_activiti.deployment;

import java.util.List;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.DeploymentBuilder;
import org.activiti.engine.repository.ProcessDefinition;
import org.junit.Test; import com.google.gson.Gson; /**
* 通过读取bpmn文件,来部署流程图
*
* @author yuanqiao
*
*/
public class DeploymentProcess { @Test
public void deploymentFirstProcess() {
ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine(); RepositoryService repositoryService = processEngine.getRepositoryService(); DeploymentBuilder deploymentBuilder = repositoryService.createDeployment().addClasspathResource("first.bpmn"); Deployment deployment = deploymentBuilder.deploy();
String deploymentId = deployment.getId();
System.out.println(deploymentId);
List<ProcessDefinition> processDefinitionList = repositoryService.createProcessDefinitionQuery()
.deploymentId(deploymentId).list();
Gson gson = new Gson();
System.out.println(gson.toJson(processDefinitionList)); }
}

  

报错如下:

[main] ERROR org.activiti.engine.impl.interceptor.CommandContext - Error while closing command context
org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.sql.SQLSyntaxErrorException: Table 'activiti.act_ge_property' doesn't exist
### The error may exist in org/activiti/db/mapping/entity/Property.xml
### The error may involve org.activiti.engine.impl.persistence.entity.PropertyEntityImpl.selectProperty-Inline
### The error occurred while setting parameters
### SQL: select * from ACT_GE_PROPERTY where NAME_ = ?
### Cause: java.sql.SQLSyntaxErrorException: Table 'activiti.act_ge_property' doesn't exist
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77)
at org.activiti.engine.impl.db.DbSqlSession.selectById(DbSqlSession.java:364)
at org.activiti.engine.impl.db.DbSqlSession.selectById(DbSqlSession.java:348)
at org.activiti.engine.impl.db.DbSqlSession.dbSchemaUpdate(DbSqlSession.java:910)
at org.activiti.engine.impl.db.DbSqlSession.performSchemaOperationsProcessEngineBuild(DbSqlSession.java:1318)
at org.activiti.engine.impl.SchemaOperationsProcessEngineBuild.execute(SchemaOperationsProcessEngineBuild.java:28)
at org.activiti.engine.impl.interceptor.CommandInvoker$1.run(CommandInvoker.java:37)
at org.activiti.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:78)
at org.activiti.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:57)
at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:42)
at org.activiti.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:48)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:63)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:29)
at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:44)
at org.activiti.engine.impl.ProcessEngineImpl.<init>(ProcessEngineImpl.java:81)
at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:665)
at org.activiti.engine.ProcessEngines.buildProcessEngine(ProcessEngines.java:189)
at org.activiti.engine.ProcessEngines.initProcessEngineFromResource(ProcessEngines.java:162)
at org.activiti.engine.ProcessEngines.init(ProcessEngines.java:94)
at org.activiti.engine.ProcessEngines.getProcessEngine(ProcessEngines.java:223)
at org.activiti.engine.ProcessEngines.getDefaultProcessEngine(ProcessEngines.java:212)
at com.yuanqiao.first_activiti.deployment.DeploymentProcess.deploymentFirstProcess(DeploymentProcess.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

解决方法:

(1)把mysql8.0的版本改成5.0的

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>

(2)修改驱动:

com.mysql.jdbc.Driver

参考文档
https://www.cnblogs.com/shanshen/p/9054173.html从源码分析问题:
https://blog.csdn.net/jiaoshaoping/article/details/80748065

  

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