修改分页问题，如果没有数据始终返回最后一页的问题。

jjt-common/src/main/java/com/jjt/common/core/page/PageDomain.java

@@ -4,98 +4,100 @@ import com.jjt.common.utils.StringUtils;
 
 /**
  * 分页数据
- * 
+ *
  * @author ruoyi
  */
-public class PageDomain
-{
-    /** 当前记录起始索引 */
+public class PageDomain {
+    /**
+     * 当前记录起始索引
+     */
     private Integer pageNum;
 
-    /** 每页显示记录数 */
+    /**
+     * 每页显示记录数
+     */
     private Integer pageSize;
 
-    /** 排序列 */
+    /**
+     * 排序列
+     */
     private String orderByColumn;
 
-    /** 排序的方向desc或者asc */
+    /**
+     * 排序的方向desc或者asc
+     */
     private String isAsc = "asc";
 
-    /** 分页参数合理化 */
+    /**
+     * 分页参数合理化
+     */
     private Boolean reasonable = true;
 
-    public String getOrderBy()
-    {
-        if (StringUtils.isEmpty(orderByColumn))
-        {
+    public String getOrderBy() {
+        if (StringUtils.isEmpty(orderByColumn)) {
             return "";
         }
         return StringUtils.toUnderScoreCase(orderByColumn) + " " + isAsc;
     }
 
-    public Integer getPageNum()
-    {
+    public Integer getPageNum() {
         return pageNum;
     }
 
-    public void setPageNum(Integer pageNum)
-    {
+    public void setPageNum(Integer pageNum) {
         this.pageNum = pageNum;
     }
 
-    public Integer getPageSize()
-    {
+    public Integer getPageSize() {
         return pageSize;
     }
 
-    public void setPageSize(Integer pageSize)
-    {
+    public void setPageSize(Integer pageSize) {
         this.pageSize = pageSize;
     }
 
-    public String getOrderByColumn()
-    {
+    public String getOrderByColumn() {
         return orderByColumn;
     }
 
-    public void setOrderByColumn(String orderByColumn)
-    {
+    public void setOrderByColumn(String orderByColumn) {
         this.orderByColumn = orderByColumn;
     }
 
-    public String getIsAsc()
-    {
+    public String getIsAsc() {
         return isAsc;
     }
 
-    public void setIsAsc(String isAsc)
-    {
-        if (StringUtils.isNotEmpty(isAsc))
-        {
+    public void setIsAsc(String isAsc) {
+        if (StringUtils.isNotEmpty(isAsc)) {
             // 兼容前端排序类型
-            if ("ascending".equals(isAsc))
-            {
+            if ("ascending".equals(isAsc)) {
                 isAsc = "asc";
-            }
-            else if ("descending".equals(isAsc))
-            {
+            } else if ("descending".equals(isAsc)) {
                 isAsc = "desc";
             }
             this.isAsc = isAsc;
         }
     }
 
-    public Boolean getReasonable()
-    {
-        if (StringUtils.isNull(reasonable))
-        {
-            return Boolean.TRUE;
+    /**
+     * Boolean reasonable = pageDomain.getReasonable();
+     * 当pagehelper.reasonable=true
+     * 先设定数据库中查询的范围，在根据条件查询。此时查询范围外的数据就查不到了
+     * 当pagehelper.reasonable=false
+     * 先根据条件查询数据库，然后在根据范围进行分页。
+     * 修改默认为false
+     *
+     * @return true false
+     */
+    public Boolean getReasonable() {
+        if (StringUtils.isNull(reasonable)) {
+            return Boolean.FALSE;
         }
         return reasonable;
     }
 
-    public void setReasonable(Boolean reasonable)
-    {
+    public void setReasonable(Boolean reasonable) {
         this.reasonable = reasonable;
     }
 }