fix(接口定义): 修复执行相关缺陷

backend/src/main/java/io/metersphere/api/service/ApiAutomationService.java

@@ -248,7 +248,7 @@ public class ApiAutomationService {
                 JSONObject element = JSON.parseObject(item.getScenarioDefinition());
                 MsScenario scenario = JSONObject.parseObject(item.getScenarioDefinition(), MsScenario.class);
                 // 多态JSON普通转换会丢失内容，需要通过 ObjectMapper 获取
-                if (StringUtils.isNotEmpty(element.getString("hashTree"))) {
+                if (element!= null && StringUtils.isNotEmpty(element.getString("hashTree"))) {
                     LinkedList<MsTestElement> elements = mapper.readValue(element.getString("hashTree"),
                             new TypeReference<LinkedList<MsTestElement>>() {
                             });

frontend/src/business/components/api/automation/scenario/EditApiScenario.vue

@@ -455,6 +455,10 @@
       addScenario(arr) {
         if (arr && arr.length > 0) {
           arr.forEach(item => {
+            if (item.id === this.currentScenario.id) {
+              this.$error("不能引用或复制自身！");
+              return;
+            }
             item.enable === undefined ? item.enable = true : item.enable;
             this.scenarioDefinition.push(item);
           })

frontend/src/business/components/api/definition/components/ApiList.vue

@@ -306,7 +306,12 @@
       },
       handleTestCase(api) {
         this.selectApi = api;
-        let request = JSON.parse(api.request);
+        let request = {};
+        if (Object.prototype.toString.call(api.request).match(/\[object (\w+)\]/)[1].toLowerCase() === 'object') {
+          request = api.request;
+        } else {
+          request = JSON.parse(api.request);
+        }
         if (!request.hashTree) {
           request.hashTree = [];
         }