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 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.(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

mysql

mysql-connector-java

5.1.41

(2)修改驱动：

原文：https://www.cnblogs.com/mkl34367803/p/11570131.html