import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class TestPage {
public TestPage() {
}
public static void main(String[] args) {
String driver = "oracle.jdbc.driver.OracleDriver";
String strUrl = "jdbc:oracle:thin:@localhost:1521:xmgl";
String username = "xmgl";
String password = "xmgl";
Statement stmt = null;
ResultSet rs = null;
Connection conn = null;
try {
Class.forName(driver);
conn = DriverManager.getConnection(strUrl, username, password);
System.out.println("ok");
CallableStatement cs = null;
//创建CallableStatement
cs = conn.prepareCall("{call page.fenye(?,?,?,?,?,?)}");
cs.setString(1, "mytest");//表名
cs.setInt(2, 3);//显示几条记录
cs.setInt(3, 1);//第几页
//注册总记录数,声明输出参数是什么类型的
cs.registerOutParameter(4,oracle.jdbc.OracleTypes.INTEGER);
//注册总页数
cs.registerOutParameter(5,oracle.jdbc.OracleTypes.INTEGER);
//注册返回的结果集
cs.registerOutParameter(6,oracle.jdbc.OracleTypes.CURSOR);
cs.execute();
//取出总记录数 /这里要注意,getInt(4)中4,是由该参数的位置决定的
int rowNum=cs.getInt(4);//获得输出参数
int pageCount = cs.getInt(5);
rs=(ResultSet)cs.getObject(6);
System.out.println("rowNum="+rowNum);
System.out.println("总页数="+pageCount);
while (rs.next()) {
System.out.println("编号:"+rs.getInt(1)+" 名字:"+rs.getString(2)+" 密码:"+rs.getString(3));
}
} catch (SQLException ex2) {
ex2.printStackTrace();
} catch (Exception ex2) {
ex2.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
if (stmt != null) {
stmt.close();
}
if (conn != null) {
conn.close();
}
}
} catch (SQLException ex1) {
}
}
}
}
存储语句:
create or replace package page is
type test_cursor is ref cursor;
procedure fenye(tableName in varchar2,pageSize in number,pageNow in number,myRows out number,myPageCount out number,p_cursor out page.test_cursor);
end;
create or replace package body page is
procedure fenye(
tableName in varchar2,
pageSize in number,--一页显示记录数
pageNow in number,--第几页
myRows out number,--总记录数
myPageCount out number,--总页数
p_cursor out page.test_cursor--返回的记录集
)
is
--定义部分
--定义sql 语句 字符串
v_sql varchar2(1000);
--定义两个整数
v_begin number:=(pageNow-1)*pageSize+1;
v_end number:=pageNow*pageSize;
begin
--执行部分
v_sql:='select * from (select t1.*, rownum rn from (select * from '||tableName||') t1 where rownum<='||v_end||') where rn>='||v_begin||' order by userid asc ';
--把游标和sql 关联
open p_cursor for v_sql;
--计算myRows 和myPageCount
--组织一个sql 语句
v_sql:='select count(*) from '||tableName;
--执行sql,并把返回的值,赋给myRows;
execute immediate v_sql into myRows;
--计算myPageCount
--if myrows%Pagesize=0 then 这样写是错的
if mod(myRows,pageSize)=0 then
myPageCount:=myrows/pageSize;
else
myPageCount:=myrows/pageSize+1;
end if;
--关闭游标
--close p_cursor;
end;
end;