Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/purgeteam/activiti-starter
activiti6-7练习
https://github.com/purgeteam/activiti-starter
activiti6 activiti7 springboot2
Last synced: 8 days ago
JSON representation
activiti6-7练习
- Host: GitHub
- URL: https://github.com/purgeteam/activiti-starter
- Owner: purgeteam
- Created: 2019-09-24T08:22:47.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2022-06-21T02:01:03.000Z (over 2 years ago)
- Last Synced: 2023-03-09T00:32:20.291Z (over 1 year ago)
- Topics: activiti6, activiti7, springboot2
- Language: Java
- Homepage:
- Size: 43 KB
- Stars: 17
- Watchers: 1
- Forks: 6
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Springboot2.1.x配置Activiti7单独数据源问题
## 简介
最近基于最新的`Activiti7`配置了`SpringBoot2`。
简单上手使用了一番。发现市面上解决`Activiti7`的教程很少，采坑也比较多，在`Activiti6`配置数据源和`Activiti7`有所区别，基于`Activiti6`在`Activiti7`里是无法正常使用的。接下来让我们看下区别。
## 问题
### `Activiti6`多数据源配置
6的配置比较简单点。
1. 先加入配置：
```
# activiti 数据源
spring.datasource.activiti.driver=com.mysql.jdbc.Driver
spring.datasource.activiti.url=jdbc:mysql://10.1.1.97:3311/test-activiti7-db?useUnicode=true&characterEncoding=utf8&useSSL=false&allowMultiQueries=true
spring.datasource.activiti.username=root
spring.datasource.activiti.password=Rtqw123OpnmER
spring.datasource.activiti.driverClassName=com.mysql.jdbc.Driver
```
2. 用`@ConfigurationProperties`加载以`spring.datasource.activiti`开头的`DataSource`。
3. 创建`ActivitiConfig`继承`AbstractProcessEngineAutoConfiguration`方法注入`SpringProcessEngineConfiguration`bean,调用`AbstractProcessEngineAutoConfiguration#baseSpringProcessEngineConfiguration`方法把创建的数据源注入。
```
@Configuration
public class ActivitiConfig extends AbstractProcessEngineAutoConfiguration {
@Bean
@ConfigurationProperties(prefix = "spring.datasource.activiti")
public DataSource activitiDataSource() {
return DataSourceBuilder.create().build();
}
@Bean
public SpringProcessEngineConfiguration springProcessEngineConfiguration(
PlatformTransactionManager transactionManager,
SpringAsyncExecutor springAsyncExecutor) throws IOException {
return baseSpringProcessEngineConfiguration(
activitiDataSource(),
transactionManager,
springAsyncExecutor);
}
}
```
`Activiti6`的数据源已经配置完成，如果是7的话会发现`AbstractProcessEngineAutoConfiguration#baseSpringProcessEngineConfiguration`方法已经不存在了，我们需要产考源码构建方式改造一番。
## 修复
### `Activiti7`多数据源配置
配置还是要上面的。
1. 创建`ActivitiConfig`继承`AbstractProcessEngineAutoConfiguration`方法注入`SpringProcessEngineConfiguration`bean。
2. 用`@ConfigurationProperties`加载以`spring.datasource.activiti`开头的`DataSource`
```
@Configuration
public class ActivitiConfig extends AbstractProcessEngineAutoConfiguration {
@Bean
@ConfigurationProperties(prefix = "spring.datasource.activiti")
public DataSource activitiDataSource() {
return DataSourceBuilder.create().build();
}
...略
}
```
3. `SpringProcessEngineConfiguration`注入方式改为下面：
```
@Bean
@Primary
public SpringProcessEngineConfiguration springProcessEngineConfiguration(
PlatformTransactionManager transactionManager,
SpringAsyncExecutor springAsyncExecutor,
ActivitiProperties activitiProperties,
ProcessDefinitionResourceFinder processDefinitionResourceFinder,
@Autowired(required = false) DefaultActivityBehaviorFactoryMappingConfigurer processEngineConfigurationConfigurer,
@Autowired(required = false) List processEngineConfigurators,
UserGroupManager userGroupManager,
DataSource dataSource) throws IOException {
SpringProcessEngineConfiguration conf = new SpringProcessEngineConfiguration();
conf.setConfigurators(processEngineConfigurators);
configureProcessDefinitionResources(processDefinitionResourceFinder,
conf);
conf.setDataSource(dataSource);
conf.setTransactionManager(transactionManager);
if (springAsyncExecutor != null) {
conf.setAsyncExecutor(springAsyncExecutor);
}
conf.setDeploymentName(activitiProperties.getDeploymentName());
conf.setDatabaseSchema(activitiProperties.getDatabaseSchema());
conf.setDatabaseSchemaUpdate(activitiProperties.getDatabaseSchemaUpdate());
conf.setDbHistoryUsed(activitiProperties.isDbHistoryUsed());
conf.setAsyncExecutorActivate(activitiProperties.isAsyncExecutorActivate());
if (!activitiProperties.isAsyncExecutorActivate()) {
ValidatorSet springBootStarterValidatorSet = new ValidatorSet("activiti-spring-boot-starter");
springBootStarterValidatorSet.addValidator(new AsyncPropertyValidator());
if (conf.getProcessValidator() == null) {
ProcessValidatorImpl processValidator = new ProcessValidatorImpl();
processValidator.addValidatorSet(springBootStarterValidatorSet);
conf.setProcessValidator(processValidator);
} else {
conf.getProcessValidator().getValidatorSets().add(springBootStarterValidatorSet);
}
}
conf.setMailServerHost(activitiProperties.getMailServerHost());
conf.setMailServerPort(activitiProperties.getMailServerPort());
conf.setMailServerUsername(activitiProperties.getMailServerUserName());
conf.setMailServerPassword(activitiProperties.getMailServerPassword());
conf.setMailServerDefaultFrom(activitiProperties.getMailServerDefaultFrom());
conf.setMailServerUseSSL(activitiProperties.isMailServerUseSsl());
conf.setMailServerUseTLS(activitiProperties.isMailServerUseTls());
if (userGroupManager != null) {
conf.setUserGroupManager(userGroupManager);
}
conf.setHistoryLevel(activitiProperties.getHistoryLevel());
conf.setCopyVariablesToLocalForTasks(activitiProperties.isCopyVariablesToLocalForTasks());
conf.setSerializePOJOsInVariablesToJson(activitiProperties.isSerializePOJOsInVariablesToJson());
conf.setJavaClassFieldForJackson(activitiProperties.getJavaClassFieldForJackson());
if (activitiProperties.getCustomMybatisMappers() != null) {
conf.setCustomMybatisMappers(
getCustomMybatisMapperClasses(activitiProperties.getCustomMybatisMappers()));
}
if (activitiProperties.getCustomMybatisXMLMappers() != null) {
conf.setCustomMybatisXMLMappers(
new HashSet<>(activitiProperties.getCustomMybatisXMLMappers()));
}
if (activitiProperties.getCustomMybatisXMLMappers() != null) {
conf.setCustomMybatisXMLMappers(
new HashSet<>(activitiProperties.getCustomMybatisXMLMappers()));
}
if (activitiProperties.isUseStrongUuids()) {
conf.setIdGenerator(new StrongUuidGenerator());
}
if (activitiProperties.getDeploymentMode() != null) {
conf.setDeploymentMode(activitiProperties.getDeploymentMode());
}
conf.setActivityBehaviorFactory(new DefaultActivityBehaviorFactory());
if (processEngineConfigurationConfigurer != null) {
processEngineConfigurationConfigurer.configure(conf);
}
return conf;
}
private void configureProcessDefinitionResources(
ProcessDefinitionResourceFinder processDefinitionResourceFinder,
SpringProcessEngineConfiguration conf) throws IOException {
List procDefResources = processDefinitionResourceFinder
.discoverProcessDefinitionResources();
if (!procDefResources.isEmpty()) {
conf.setDeploymentResources(procDefResources.toArray(new Resource[0]));
}
}
```
## 常见错误
在以上配置中可能会有`jdbcUrl is required with driverClassName`错误
解决办法如下:
```
# activiti 数据源
spring.datasource.activiti.driver=com.mysql.jdbc.Driver
spring.datasource.activiti.url=jdbc:mysql://10.1.1.97:3311/test-activiti7-db?useUnicode=true&characterEncoding=utf8&useSSL=false&allowMultiQueries=true
# url换为jdbc-url 解决jdbcUrl is required with driverClassName错误
# 官方文档的解释是：
# 因为连接池的实际类型没有被公开，所以在您的自定义数据源的元数据中没有生成密钥，而且在IDE中没有完成(因为DataSource接口没有暴露属性)。
# 另外，如果您碰巧在类路径上有Hikari，那么这个基本设置就不起作用了，因为Hikari没有url属性(但是确实有一个jdbcUrl属性)。在这种情况下，您必须重写您的配置如下:
spring.datasource.activiti.jdbc-url=${spring.datasource.activiti.url}
spring.datasource.activiti.username=root
spring.datasource.activiti.password=Rtqw123OpnmER
spring.datasource.activiti.driverClassName=com.mysql.jdbc.Driver
```
## 总结
`Activiti7`国内的教程不是很多，需要自己在社区里或者官方文档，源码去看了解，细心学习。
> 示例代码地址:[activiti-starter](https://github.com/purgeteam/activiti-starter)
> 作者GitHub:
[Purgeyao](https://github.com/purgeyao) 欢迎关注