解决方式:
1.配置文件插入
<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
<property name="dataSource" ref="dataSource" />
<property name="databaseSchemaUpdate" value="true" />
<property name="transactionManager" ref="transactionManager" />
<!-- 中文乱码问题 -->
<property name="activityFontName" value="宋体"></property>
<property name="labelFontName" value="宋体"/>
</bean>
2.生成图片代码中增加
public InputStream getDiagram(String processInstanceId) {
// 查询流程实例
ProcessInstance pi = this.runtimeService.createProcessInstanceQuery()
.processInstanceId(processInstanceId).singleResult();
// 强制类型转换为RepositoryServiceImpl
RepositoryServiceImpl rs = (RepositoryServiceImpl) this.processEngine
.getRepositoryService();
//1使用Spring注入
ProcessEngineConfigurationImpl processEngineConfigurationImpl = ((ProcessEngineImpl) this.processEngine)
.getProcessEngineConfiguration();
Context.setProcessEngineConfiguration(processEngineConfigurationImpl);
//2.不使用Spring注入
// ProcessEngineImpl defaultProcessEngine = (ProcessEngineImpl) ProcessEngines
// .getDefaultProcessEngine();
// Context.setProcessEngineConfiguration(defaultProcessEngine
// .getProcessEngineConfiguration());
BpmnModel bpmnModel = repositoryService.getBpmnModel(pi
.getProcessDefinitionId());
// 转换为输入流
InputStream is = ProcessDiagramGenerator.generateDiagram(bpmnModel,
"png", runtimeService.getActiveActivityIds(processInstanceId));
return is;
}