fix 修复工具类可能出现空指针情况

songgaoshuai

2024-03-27 6954fdec0a01ec0e359cd878cc5af644299a3ed9

fix 修复工具类可能出现空指针情况

 ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/utils/ModelUtils.java

@@ -9,6 +9,7 @@
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.dromara.common.core.utils.SpringUtils;
import org.dromara.common.core.utils.StreamUtils;
import org.dromara.common.core.utils.StringUtils;
import org.dromara.common.json.utils.JsonUtils;
@@ -17,7 +18,7 @@
import org.flowable.bpmn.model.*;
import org.flowable.bpmn.model.Process;
import org.flowable.editor.language.json.converter.BpmnJsonConverter;
import org.flowable.engine.impl.util.ProcessDefinitionUtil;
import org.flowable.engine.ProcessEngine;

import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
@@ -36,6 +37,8 @@
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class ModelUtils {

    private static final ProcessEngine PROCESS_ENGINE = SpringUtils.getBean(ProcessEngine.class);

    public static BpmnModel xmlToBpmnModel(String xml) throws IOException {
        if (xml == null) {
@@ -166,7 +169,7 @@
     * @param processDefinitionId 流程定义id
     */
    public static List<FlowElement> getFlowElements(String processDefinitionId) {
        BpmnModel bpmnModel = ProcessDefinitionUtil.getBpmnModel(processDefinitionId);
        BpmnModel bpmnModel = PROCESS_ENGINE.getRepositoryService().getBpmnModel(processDefinitionId);
        List<FlowElement> list = new ArrayList<>();
        List<Process> processes = bpmnModel.getProcesses();
        Collection<FlowElement> flowElements = processes.get(0).getFlowElements();
@@ -213,7 +216,7 @@
     * @param flowElementId       节点id
     */
    public static Map<String, List<ExtensionElement>> getExtensionElement(String processDefinitionId, String flowElementId) {
        BpmnModel bpmnModel = ProcessDefinitionUtil.getBpmnModel(processDefinitionId);
        BpmnModel bpmnModel = PROCESS_ENGINE.getRepositoryService().getBpmnModel(processDefinitionId);
        Process process = bpmnModel.getMainProcess();
        FlowElement flowElement = process.getFlowElement(flowElementId);
        return flowElement.getExtensionElements();
@@ -226,7 +229,7 @@
     * @param taskDefinitionKey   流程定义id
     */
    public static boolean isUserTask(String processDefinitionId, String taskDefinitionKey) {
        BpmnModel bpmnModel = ProcessDefinitionUtil.getBpmnModel(processDefinitionId);
        BpmnModel bpmnModel = PROCESS_ENGINE.getRepositoryService().getBpmnModel(processDefinitionId);
        FlowNode flowNode = (FlowNode) bpmnModel.getFlowElement(taskDefinitionKey);
        return flowNode instanceof UserTask;
    }