BPM: 新增通过流程标识获取流程图

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/definition/BpmModelController.java

@@ -6,16 +6,15 @@ import cn.iocoder.yudao.framework.common.util.io.IoUtils;
 import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.*;
 import cn.iocoder.yudao.module.bpm.convert.definition.BpmModelConvert;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmModelService;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.annotation.Resource;
+import jakarta.validation.Valid;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
-import jakarta.annotation.Resource;
-import jakarta.validation.Valid;
-
 import java.io.IOException;
 
 import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
@@ -44,6 +43,15 @@ public class BpmModelController {
         return success(model);
     }
 
+    @GetMapping("/get-by-key")
+    @Operation(summary = "获得模型")
+    @Parameter(name = "key", description = "流程标识", required = true, example = "oa_leave")
+    @PreAuthorize("@ss.hasPermission('bpm:model:query')")
+    public CommonResult<BpmModelRespVO> getModelByKey(@RequestParam("key") String key) {
+        BpmModelRespVO model = modelService.getBpmnModelByKey(key);
+        return success(model);
+    }
+
     @PostMapping("/create")
     @Operation(summary = "新建模型")
     @PreAuthorize("@ss.hasPermission('bpm:model:create')")

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/definition/BpmModelService.java

@@ -2,9 +2,8 @@ package cn.iocoder.yudao.module.bpm.service.definition;
 
 import cn.iocoder.yudao.framework.common.pojo.PageResult;
 import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.*;
-import org.flowable.bpmn.model.BpmnModel;
-
 import jakarta.validation.Valid;
+import org.flowable.bpmn.model.BpmnModel;
 
 /**
  * Flowable流程模型接口
@@ -38,6 +37,14 @@ public interface BpmModelService {
      */
     BpmModelRespVO getModel(String id);
 
+    /**
+     * 获得流程模块
+     *
+     * @param key 流程标识
+     * @return 流程模型
+     */
+    BpmModelRespVO getBpmnModelByKey(String key);
+
     /**
      * 修改流程模型
      *
@@ -62,7 +69,7 @@ public interface BpmModelService {
     /**
      * 修改模型的状态，实际更新的部署的流程定义的状态
      *
-     * @param id 编号
+     * @param id    编号
      * @param state 状态
      */
     void updateModelState(String id, Integer state);

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/definition/BpmModelServiceImpl.java

@@ -14,6 +14,8 @@ import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmFormDO;
 import cn.iocoder.yudao.module.bpm.enums.definition.BpmModelFormTypeEnum;
 import cn.iocoder.yudao.module.bpm.service.definition.dto.BpmModelMetaInfoRespDTO;
 import cn.iocoder.yudao.module.bpm.service.definition.dto.BpmProcessDefinitionCreateReqDTO;
+import jakarta.annotation.Resource;
+import jakarta.validation.Valid;
 import lombok.extern.slf4j.Slf4j;
 import org.flowable.bpmn.converter.BpmnXMLConverter;
 import org.flowable.bpmn.model.BpmnModel;
@@ -29,8 +31,6 @@ import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.ObjectUtils;
 import org.springframework.validation.annotation.Validated;
 
-import jakarta.annotation.Resource;
-import jakarta.validation.Valid;
 import java.util.*;
 
 import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
@@ -134,6 +134,19 @@ public class BpmModelServiceImpl implements BpmModelService {
         return modelRespVO;
     }
 
+    @Override
+    public BpmModelRespVO getBpmnModelByKey(String key) {
+        Model model = getModelByKey(key);
+        if (model == null) {
+            return null;
+        }
+        BpmModelRespVO modelRespVO = BpmModelConvert.INSTANCE.convert(model);
+        // 拼接 bpmn XML
+        byte[] bpmnBytes = repositoryService.getModelEditorSource(model.getId());
+        modelRespVO.setBpmnXml(StrUtil.utf8Str(bpmnBytes));
+        return modelRespVO;
+    }
+
     @Override
     @Transactional(rollbackFor = Exception.class) // 因为进行多个操作，所以开启事务
     public void updateModel(@Valid BpmModelUpdateReqVO updateReqVO) {