package process;
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import org.activiti.bpmn.model.BpmnModel;
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import org.activiti.engine.ProcessEngineConfiguration;
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import org.activiti.engine.RepositoryService;
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import org.activiti.engine.repository.ProcessDefinition;
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import org.activiti.image.ProcessDiagramGenerator;
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import org.apache.commons.io.FileUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.HashMap;
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import java.util.Map;
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public class WorkflowUtils {
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private static Logger logger = LoggerFactory.getLogger(WorkflowUtils.class);
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/**
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* 转换流程节点类型为中文说明
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*
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* @param type 英文名称
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* @return 翻译后的中文名称
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*/
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public static String parseToZhType(String type) {
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Map<String, String> types = new HashMap<String, String>();
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types.put("userTask", "用户任务");
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types.put("serviceTask", "系统任务");
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types.put("startEvent", "开始节点");
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types.put("endEvent", "结束节点");
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types.put("exclusiveGateway", "条件判断节点(系统自动根据条件处理)");
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types.put("inclusiveGateway", "并行处理任务");
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types.put("callActivity", "子流程");
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return types.get(type) == null ? type : types.get(type);
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}
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/**
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* 导出图片文件到硬盘
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*
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* @return 文件的全路径
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*/
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public static String exportDiagramToFile(RepositoryService repositoryService, ProcessDefinition processDefinition, String exportDir) throws IOException {
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// String diagramResourceName = processDefinition.getDiagramResourceName();
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// String key = processDefinition.getKey();
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// int version = processDefinition.getVersion();
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String diagramPath = exportDir;
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BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinition.getId());
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ProcessEngineConfiguration engineConfiguration = EngineLoader.engineConfiguration;
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ProcessDiagramGenerator diagramGenerator = engineConfiguration.getProcessDiagramGenerator();
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InputStream resourceAsStream = diagramGenerator.generateDiagram(bpmnModel, "png", "微软雅黑","微软雅黑" ,null, 0);
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byte[] b = new byte[resourceAsStream.available()];
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resourceAsStream.read(b, 0, b.length);
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// create file if not exist
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// String diagramDir = exportDir + "/" + key + "/" + version;
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// File diagramDirFile = new File(diagramDir);
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// if (!diagramDirFile.exists()) {
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// diagramDirFile.mkdirs();
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// }
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// diagramPath = exportDir + "/" +11 +".png";
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File file = new File(exportDir);
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if (file.exists()) {
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logger.debug("diagram exist, ignore... : {}", diagramPath);
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return diagramPath;
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} else {
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file.createNewFile();
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}
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logger.debug("export diagram to : {}", diagramPath);
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// wirte bytes to file
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FileUtils.writeByteArrayToFile(file, b, true);
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return diagramPath;
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}
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}
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