!854 update 优化使用getFirst()替代get(0)以提高代码可读性

* update 优化使用getFirst()替代get(0)以提高代码可读性

ruoyi-admin/src/main/java/org/dromara/web/service/SysLoginService.java

@@ -97,7 +97,7 @@ public class SysLoginService {
             sysSocialService.insertByBo(bo);
         } else {
             // 更新用户信息
-            bo.setId(list.get(0).getId());
+            bo.setId(list.getFirst().getId());
             sysSocialService.updateByBo(bo);
             // 如果要绑定的平台账号已经被绑定过了 是否抛异常自行决断
             // throw new ServiceException("此平台账号已经被绑定!");

ruoyi-admin/src/main/java/org/dromara/web/service/impl/SocialAuthStrategy.java

@@ -68,7 +68,7 @@ public class SocialAuthStrategy implements IAuthStrategy {
         if (CollUtil.isEmpty(list)) {
             throw new ServiceException("你还没有绑定第三方账号，绑定后才可以登录！");
         }
-        SysUserVo user = loadUser(list.get(0).getUserId());
+        SysUserVo user = loadUser(list.getFirst().getUserId());
         // 此处可根据登录用户的数据不同 自行创建 loginUser 属性不够用继承扩展就行了
         LoginUser loginUser = loginService.buildLoginUser(user);
         loginUser.setClientKey(client.getClientKey());

ruoyi-common/ruoyi-common-core/src/main/java/org/dromara/common/core/utils/TreeBuildUtils.java

@@ -64,7 +64,7 @@ public class TreeBuildUtils extends TreeUtil {
         if (CollUtil.isEmpty(list)) {
             return CollUtil.newArrayList();
         }
-        K k = ReflectUtils.invokeGetter(list.get(0), "parentId");
+        K k = ReflectUtils.invokeGetter(list.getFirst(), "parentId");
         return TreeUtil.build(list, k, DEFAULT_CONFIG, nodeParser);
     }
 

ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/CellMergeHandler.java

@@ -66,7 +66,7 @@ public class CellMergeHandler {
         }
 
         // 获取有合并注解的字段
-        Map<Field, FieldColumnIndex> mergeFields = getFieldColumnIndexMap(rows.get(0).getClass());
+        Map<Field, FieldColumnIndex> mergeFields = getFieldColumnIndexMap(rows.getFirst().getClass());
         // 如果没有需要合并的字段则返回空集
         if (CollUtil.isEmpty(mergeFields)) {
             return Collections.emptyList();

ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/DropDownOptions.java

@@ -154,7 +154,7 @@ public class DropDownOptions {
         sonList.forEach(everySon -> {
             if (parentGroupByIdMap.containsKey(sonHowToGetParentIdFunction.apply(everySon))) {
                 // 找到对应的上级
-                T parentObj = parentGroupByIdMap.get(sonHowToGetParentIdFunction.apply(everySon)).get(0);
+                T parentObj = parentGroupByIdMap.get(sonHowToGetParentIdFunction.apply(everySon)).getFirst();
                 // 提取名称和ID作为Key
                 String key = howToBuildEveryOption.apply(parentObj);
                 // Key对应的Value

ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/ExcelDownHandler.java

@@ -282,10 +282,10 @@ public class ExcelDownHandler implements SheetWriteHandler {
                     continue;
                 }
                 // 取第一个
-                String str = data.get(0);
+                String str = data.getFirst();
                 rowData.add(str);
                 // 通过移除的方式避免重复
-                data.remove(0);
+                data.removeFirst();
                 // 设置可以继续
                 flag = true;
             }

ruoyi-common/ruoyi-common-mybatis/src/main/java/org/dromara/common/mybatis/handler/PlusDataPermissionHandler.java

@@ -112,7 +112,7 @@ public class PlusDataPermissionHandler {
         }
         Object defaultValue = "-1";
         NullSafeStandardEvaluationContext context = new NullSafeStandardEvaluationContext(defaultValue);
-        context.addPropertyAccessor(new NullSafePropertyAccessor(context.getPropertyAccessors().get(0), defaultValue));
+        context.addPropertyAccessor(new NullSafePropertyAccessor(context.getPropertyAccessors().getFirst(), defaultValue));
         context.setBeanResolver(beanResolver);
         DataPermissionHelper.getContext().forEach(context::setVariable);
         Set<String> conditions = new HashSet<>();

ruoyi-modules/ruoyi-demo/src/main/java/org/dromara/demo/service/impl/ExportExcelServiceImpl.java

@@ -122,7 +122,7 @@ public class ExportExcelServiceImpl implements IExportExcelService {
         Map<Integer, List<DemoCityData>> groupByIdMap =
             StreamUtils.groupByKey(cityDataList, DemoCityData::getId);
         if (groupByIdMap.containsKey(id)) {
-            DemoCityData demoCityData = groupByIdMap.get(id).get(0);
+            DemoCityData demoCityData = groupByIdMap.get(id).getFirst();
             return DropDownOptions.createOptionValue(demoCityData.getName(), demoCityData.getId());
         } else {
             return StringUtils.EMPTY;
@@ -216,7 +216,7 @@ public class ExportExcelServiceImpl implements IExportExcelService {
 
         sonList.forEach(everySon -> {
             if (parentGroupByIdMap.containsKey(everySon.getPid())) {
-                everySon.setPData(parentGroupByIdMap.get(everySon.getPid()).get(0));
+                everySon.setPData(parentGroupByIdMap.get(everySon.getPid()).getFirst());
             }
         });
     }

ruoyi-modules/ruoyi-gen/src/main/java/org/dromara/gen/service/GenTableServiceImpl.java

@@ -603,7 +603,7 @@ public class GenTableServiceImpl implements IGenTableService {
             }
         }
         if (ObjectUtil.isNull(table.getPkColumn())) {
-            table.setPkColumn(table.getColumns().get(0));
+            table.setPkColumn(table.getColumns().getFirst());
         }
 
     }

ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/listener/WorkflowGlobalListener.java

@@ -207,7 +207,7 @@ public class WorkflowGlobalListener implements GlobalListener {
             }
             if (!BusinessStatusEnum.initialState(instance.getFlowStatus())) {
                 if (task != null && CollUtil.isNotEmpty(nextTasks) && nextTasks.size() == 1
-                    && flwCommonService.applyNodeCode(definition.getId()).equals(nextTasks.get(0).getNodeCode())) {
+                    && flwCommonService.applyNodeCode(definition.getId()).equals(nextTasks.getFirst().getNodeCode())) {
                     // 如果为画线指定驳回 线条指定为驳回 驳回得节点为申请人节点 则修改流程状态为退回
                     flowProcessEventHandler.processHandler(definition.getFlowCode(), instance, BusinessStatusEnum.BACK.getStatus(), params, false);
                     notifyInitiatorIfNeeded(definition, instance, BusinessStatusEnum.BACK.getStatus(), variable);
@@ -274,7 +274,7 @@ public class WorkflowGlobalListener implements GlobalListener {
         }
         // 只有“退回到申请人”场景需要拦截待办提醒，其余退回/流转仍然保留待办消息。
         String applyNodeCode = flwCommonService.applyNodeCode(definition.getId());
-        return !StringUtils.equals(applyNodeCode, nextTasks.get(0).getNodeCode());
+        return !StringUtils.equals(applyNodeCode, nextTasks.getFirst().getNodeCode());
     }
 
     /**

ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwCommonServiceImpl.java

@@ -189,6 +189,6 @@ public class FlwCommonServiceImpl implements IFlwCommonService {
         if (CollUtil.isEmpty(firstBetweenNode)) {
             throw new ServiceException("流程定义缺少申请人节点，请检查流程定义配置");
         }
-        return firstBetweenNode.get(0).getNodeCode();
+        return firstBetweenNode.getFirst().getNodeCode();
     }
 }

ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java

@@ -133,7 +133,7 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
             }
             taskService.mergeVariable(flowInstance, variables);
             insService.updateById(flowInstance);
-            StartProcessReturnDTO dto = new StartProcessReturnDTO(taskList.get(0).getInstanceId(), taskList.get(0).getId());
+            StartProcessReturnDTO dto = new StartProcessReturnDTO(taskList.getFirst().getInstanceId(), taskList.getFirst().getId());
             // 保存流程实例业务信息
             this.buildFlowInstanceBizExt(flowInstance, bizExt);
             return dto;
@@ -164,7 +164,7 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
         if (taskList.size() > 1) {
             throw new ServiceException("请检查流程第一个环节是否为申请人！");
         }
-        return new StartProcessReturnDTO(instance.getId(), taskList.get(0).getId());
+        return new StartProcessReturnDTO(instance.getId(), taskList.getFirst().getId());
     }
 
     /**
@@ -345,7 +345,7 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
         if (CollUtil.isEmpty(flowHisTasks)) {
             throw new ServiceException("流程历史任务不存在，无法添加抄送记录");
         }
-        FlowHisTask flowHisTask = flowHisTasks.get(0);
+        FlowHisTask flowHisTask = flowHisTasks.getFirst();
         FlowNode flowNode = new FlowNode();
         flowNode.setNodeCode(flowHisTask.getTargetNodeCode());
         flowNode.setNodeName(flowHisTask.getTargetNodeName());
@@ -544,7 +544,7 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
             return nodeCodes;
         }
         //判断是否配置了固定驳回节点
-        Node node = nodeCodes.get(0);
+        Node node = nodeCodes.getFirst();
         if (StringUtils.isNotBlank(node.getAnyNodeSkip())) {
             return nodeService.getByNodeCodes(Collections.singletonList(node.getAnyNodeSkip()), task.getDefinitionId());
         }