oracle分页

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SELECT * FROM ( select rownum r, union_tb.* from (


     
         

) union_tb
) WHERE r > #startIndex# AND r <= #startIndex# + #pageSize#
]]>










        select * from (select row_.*,rownum rownum_ from (
    ]]>


        ) row_ where rownum <= #endRow#) where rownum_ > #startRow#
    ]]>







package  com.sinolife.commons;

import java.io.Serializable;

/**
* 分页参数读取辅助类
*
*/
public class PaginatedHelper implements Serializable {
// 每页记录条数
/**
*
*/
private static final long serialVersionUID = 1L;
protected int page=1;
protected int rows;

// 开始位置
protected int startIndex;
public static final int PAGE_SIZE = 15;
/**
* 获取当前页
* @return
*/
public int getCurrentPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public void setRows(int rows) {
if (rows > 0) {
this.rows = rows;
} else {
this.rows = PAGE_SIZE;
}
}
// 计算查询开始位置
private void calculatestartIndex() {
if (this.page > 0) {
} else {
page = 1;
}
this.startIndex = (this.page - 1) * this.rows;
}

/**
* 取得开始位置
* @return
*/
public int getStartIndex() {
calculatestartIndex();
return startIndex;
}
public int getPageSize(){
return this.rows;
}
public int getRows() {
return rows;
}
}

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