JAVA 调用包中的存储过程（分页）

这个分页的存储过程是转自互联网：

http://kingmxj.javaeye.com/blog/438267

create or replace package package_page as
type cursor_page is ref cursor;
Procedure proc_page(
p_tablename varchar2, --表名emp e
p_tablecolumn varchar2, --查询列e.id,e.ename,e.job
p_order varchar2, --排序e.ename desc
p_pagesize Number, --每页大小
p_curpage Number, --当前页
p_where varchar2, --查询条件e.ename like '%S%'
p_rowcount out Number, --总条数,输出参数
p_pagecount out number, --总页数
p_cursor out cursor_page); --结果集
end package_page;
/

CREATE OR REPLACE Package Body package_page
Is
--存储过程
Procedure proc_page(
p_tablename varchar2, --表名emp e
p_tablecolumn varchar2, --查询列e.id,e.ename,e.job
p_order varchar2, --排序e.ename desc
p_pagesize Number, --每页大小
p_curpage Number, --当前页
p_where varchar2, --查询条件e.ename like '%S%'
p_rowcount out Number, --总条数,输出参数
p_pagecount out number, --总页数
p_cursor out cursor_page --结果集
)
is
v_count_sql varchar2(2000);
v_select_sql varchar2(2000);
begin
--查询总条数
v_count_sql:='select count(*) from '||p_tablename;
--连接查询条件(''也属于is null)
if p_where is not null then
v_count_sql:=v_count_sql||' where '||p_where;
end if;
--执行查询,查询总条数
execute immediate v_count_sql into p_rowcount;

--dbms_output.put_line('查询总条数SQL=>'||v_count_sql);
--dbms_output.put_line('查询总条数Count='||p_rowcount);

--得到总页数
if mod(p_rowcount,p_pagesize)=0 then
p_pagecount:=p_rowcount/p_pagesize;
else
p_pagecount:=p_rowcount/p_pagesize+1;
end if;

--如果查询记录大于0则查询结果集
if p_rowcount>0 and p_curpage>=1 and p_curpage<=p_pagecount then

--查询所有(只有一页)
if p_rowcount<=p_pagesize then
v_select_sql:='select '||p_tablecolumn||' from '||p_tablename;
if p_where is not null then
v_select_sql:=v_select_sql||' where '||p_where;
end if;
if p_order is not null then
v_select_sql:=v_select_sql||' order by '||p_order;
end if;
elsif p_curpage=1 then --查询第一页
v_select_sql:='select '||p_tablecolumn||' from '||p_tablename;
if p_where is not null then
v_select_sql:=v_select_sql||' where '||p_where||' and rownum<='||p_pagesize;
else
v_select_sql:=v_select_sql||' where rownum<='||p_pagesize;
end if;
if p_order is not null then
v_select_sql:=v_select_sql||' order by '||p_order;
end if;
else --查询指定页
v_select_sql:='select * from (select '|| p_tablename || '.' || p_tablecolumn ||',rownum row_num from '|| p_tablename;
if p_where is not null then
v_select_sql:=v_select_sql||' where '||p_where;
end if;
if p_order is not null then
v_select_sql:=v_select_sql||' order by '||p_order;
end if;
v_select_sql:=v_select_sql||') where row_num>'||((p_curpage-1)*p_pagesize)||' and row_num<='||(p_curpage*p_pagesize);
end if;
--执行查询
--dbms_output.put_line('查询语句=>'||v_select_sql);
open p_cursor for v_select_sql;
else
--dbms_output.put_line('查询语句=>'||'select * from '||p_tablename||' where 1!=1');
open p_cursor for 'select * from '||p_tablename||' where 1!=1';
end if;

end proc_page;
end package_page;
/

import java.sql.CallableStatement; import java.sql.Connection; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.Date; import java.util.List; import oracle.jdbc.driver.OracleTypes; import com.cl.dao.bean.McBean; import com.cl.dao.bean.PageMcBean; import com.cl.dao.db.MyDataSource; import com.cl.dao.inf.McDao; /** * @param tableName * 1.表名 2.查找所有 * ， * @param orderBy * 3.排序字段 * @param oneCount * 4.每页数量， * @param nowPage * 5.当前第几页 * @param constraint * 6.查找条件 * * 7.返回总条目数，8.总页数，9.和一个游标<br> * 例如package_page.proc_page('t_mc','*','nid desc',5,2,' 1=1 * ',v_rowcount,v_pagecount,v_cursor)<br> */ public PageMcBean searchMc(String tableName, String orderBy, int oneCount, int nowPage, String constraint) { PageMcBean pageMcBean = new PageMcBean(); Connection conn = MyDataSource.getInstance().getConnection(); CallableStatement cstmt = null; ResultSet rs = null; try { cstmt = conn .prepareCall("{call package_page.proc_page(?,?,?,?,?,?,?,?,?)}"); cstmt.setString(1, tableName); cstmt.setString(2, "*"); cstmt.setString(3, orderBy); cstmt.setInt(4, oneCount); cstmt.setInt(5, nowPage); cstmt.setString(6, constraint); cstmt.registerOutParameter(7, OracleTypes.INTEGER); cstmt.registerOutParameter(8, OracleTypes.INTEGER); cstmt.registerOutParameter(9, OracleTypes.CURSOR); cstmt.execute(); int rowCount = cstmt.getInt(7); int pageCount = cstmt.getInt(8); rs = (ResultSet) cstmt.getObject(9); int cols = rs.getMetaData().getColumnCount(); List<McBean> list = new ArrayList<McBean>(); while (rs.next()) { int nid = rs.getInt("nid"); String sname = rs.getString("sname"); String sdescription = rs.getString("sdescription"); // 商品描述 double nprice = rs.getDouble("nprice"); String simg = rs.getString("simg"); String smctag = rs.getString("smctag"); // 是否缺贷 Date dcdate = new Date(rs.getDate("dcdate").getTime()); // 添加时间 int nmaxid = rs.getInt("nmaxid"); int nminid = rs.getInt("nminid"); McBean mcBean = new McBean(); mcBean.setNid(nid); mcBean.setSname(sname); mcBean.setSdescription(sdescription); mcBean.setNprice(nprice); mcBean.setSimg(simg); mcBean.setSmctag(smctag); mcBean.setDcdate(dcdate); mcBean.setNmaxid(nmaxid); mcBean.setNminid(nminid); list.add(mcBean); } pageMcBean.setList(list); pageMcBean.setPageCount(pageCount); pageMcBean.setRowCount(rowCount); return pageMcBean; } catch (SQLException e) { e.printStackTrace(); } finally { if (rs != null) { try { rs.close(); } catch (SQLException e) { e.printStackTrace(); } } if (cstmt != null) { try { cstmt.close(); } catch (SQLException e) { e.printStackTrace(); } } if (conn != null) { try { conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } return null; } public static void main(String[] args) { PageMcBean pageMcBean = new McDaoImpl().searchMc("t_mc", "nid asc", 5, 3, ""); List<McBean> list = pageMcBean.getList(); for(McBean bean : list){ System.out.println(bean); } System.out.println(pageMcBean.getPageCount()); System.out.println(pageMcBean.getRowCount()); }

这里需要用到ojdbc14.jar包中的类： oracle.jdbc.driver.OracleTypes;

存储过程可以通用，显示数据可以根据自己需要定义对应的Bean