!856 update 优化代码，简化类型检查

* update 优化代码，简化类型检查

ruoyi-modules/ruoyi-gen/src/main/java/org/dromara/gen/domain/GenTableColumn.java

@@ -340,7 +340,7 @@ public class GenTableColumn extends BaseEntity {
      */
     public String readConverterExp() {
         String remarks = StringUtils.substringBetween(this.columnComment, "（", "）");
-        StringBuffer sb = new StringBuffer();
+        StringBuilder sb = new StringBuilder();
         if (StringUtils.isNotEmpty(remarks)) {
             for (String value : remarks.split(" ")) {
                 if (StringUtils.isNotEmpty(value)) {

ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/controller/system/SysDeptController.java

@@ -54,7 +54,7 @@ public class SysDeptController extends BaseController {
      */
     @SaCheckPermission("system:dept:list")
     @GetMapping("/list/exclude/{deptId}")
-    public R<List<SysDeptVo>> excludeChild(@PathVariable(value = "deptId", required = false) Long deptId) {
+    public R<List<SysDeptVo>> excludeChild(@PathVariable(value = "deptId") Long deptId) {
         List<SysDeptVo> depts = deptService.selectDeptList(new SysDeptBo());
         depts.removeIf(d -> d.getDeptId().equals(deptId)
             || StringUtils.splitList(d.getAncestors()).contains(Convert.toStr(deptId)));

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

@@ -3,7 +3,6 @@ package org.dromara.workflow.service.impl;
 import cn.hutool.core.convert.Convert;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.poi.ss.formula.functions.T;
 import org.dromara.common.translation.annotation.TranslationType;
 import org.dromara.common.translation.core.TranslationInterface;
 import org.dromara.workflow.common.ConditionalOnEnable;