Oracle分页存储过程

CREATE OR REPLACE PROCEDURE "GETRECORDFROMPAGE"
(
p_colunmName        in varchar2,   --列名
p_tableName        in varchar2,   --表名
p_strWhere         in varchar2,   --查询条件
p_orderColumn      in varchar2,   --排序的列
p_orderStyle       in varchar2,   --排序方式
p_curPage          in Number, --当前页
p_pageSize         in Number, --每页显示记录条数
p_totalRecords     out Number,     --总记录数
p_totalPages       out Number,    --总页数
v_cur              out Sys_Refcursor --返回的结果集
)
is
v_sql VARCHAR2(2000) := '';      --sql语句
v_startRecord Number(8);          --开始显示的记录条数
v_endRecord Number(8);           --结束显示的记录条数
begin
--记录中总记录条数
v_sql:='select to_number(count(*)) from ' || p_tableName||' ' || 'where 1=1 ';
if p_strWhere is not null or p_strWhere <> '' then
v_sql:=v_sql || ' and ' ||p_strWhere;
end if;
Dbms_Output.put_line(v_sql);
execute immediate v_sql into p_totalRecords;

--验证页面记录大小
if p_pageSize<0 then
p_pageSize:=0;
end if;

--根据页大小计算总页数
if mod(p_totalRecords,p_pageSize) =0 then
p_totalPages := p_totalRecords /p_pageSize;
else
p_totalPages := p_totalRecords / p_pageSize + 1;
end if;

--验证页号
if p_curPage<1 then
p_curPage:=1;
end if;

if p_curPage > p_totalPages then
p_curPage:=p_totalPages;
end if;

--实现分页查询
if p_totalRecords = 0 then --如果总记录数为0
v_startRecord :=0;
v_endRecord :=0;
else
v_startRecord:=(p_curPage-1)* p_pageSize+1;
v_endRecord :=p_curPage* p_pageSize;
end if;

v_sql := 'select * from (select rownum tt,'|| p_colunmName ||' from ' || p_tableName;

if p_strWhere is not null or p_strWhere <> '' then
v_sql := v_sql || ' where 1=1 and ' || p_strWhere;
end if;

if p_orderColumn IS NOT NULL or p_orderColumn <> '' then
v_sql := v_sql || ' order by ' || p_orderColumn || ' ' || p_orderStyle;
end if;

v_sql := v_sql || ') t where  t.tt >= ' || v_startRecord;
v_sql := v_sql || ' and   t.tt < ' || v_endRecord;
DBMS_OUTPUT.put_line(v_sql);

open v_cur for v_sql;
end GetRecordFromPage;

public static Page getPro(String column,String tableName,String where,String order,
String orderStyle,Class clazz) throws Exception
{
ArrayList list = new ArrayList();
Connection conn = null;
CallableStatement cst = null;
ResultSet rs = null;
conn = DBHelper.getConn();
Page page = new Page();
try {
cst = conn.prepareCall("{call GetRecordFromPage(?,?,?,?,?,?,?,?,?)}");
cst.setString(1,column);
cst.setString(2, tableName);
cst.setString(3, where);
cst.setString(4, order);
cst.setString(5, orderStyle);
cst.setInt(6, page.getPageIndex());
cst.setInt(7, page.getPageSize());
cst.registerOutParameter(8, java.sql.Types.INTEGER);
cst.registerOutParameter(9, java.sql.Types.INTEGER);
cst.registerOutParameter(10, OracleTypes.CURSOR);
cst.execute();
rs = (ResultSet) cst.getObject(10);
ResultSetMetaData rsmd = rs.getMetaData();
while(rs.next())
{									for (int i = 1; i <= rmd.getColumnCount(); i++) {
fieldName = rmd.getColumnName(i);
Field field = clazz.getDeclaredField(fieldName);
String stringLetter = fieldName.substring(0, 1)
.toUpperCase();
// 获得相应属性的setXXX方法名称
String setName = "set" + stringLetter
+ fieldName.substring(1);
Method setMethod = clazz.getMethod(setName,
new Class[] { field.getType() });      // 获得参数值
setMethod.invoke(bean, new Object[] { getObjectFromRs(
rs, fieldName, field.getType()) });
}
list.add(bean);}}catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
finally{
rs.close();
cst.close();
conn.close();
}
page.setData(list);return page;}