fix(系统设置):导入环境选择其他内容的json格式文件时有错误提示

frontend/src/business/components/settings/project/EnvironmentImport.vue

@@ -89,6 +89,7 @@ export default {
           reader.readAsText(file.raw)
             reader.onload = (e) => {
               let fileString = e.target.result;
+              try {
                 JSON.parse(fileString).map(env => {
                   //projectId为空字符串要转换为null，空字符串会被认为有projectId
                   env.projectId = this.currentProjectId === '' ? null : this.currentProjectId;
@@ -97,9 +98,12 @@ export default {
                     this.$success(this.$t('commons.save_success'));
                   })
                 })
-
+              } catch (exception) {
+                this.$warning(this.$t('api_test.api_import.ms_env_import_file_limit'));
               }
             }
+
+        }
       }
     },
     handleExceed() {