记个流水账，记录下这个困扰自己多时的问题最后怎么解决的。当时觉得该尝试的都尝试了，纳闷到底怎样能解决的，最后还是解决了~
正确的代码如下：
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*,java.lang.*,oracle.spatial.geometry.*,oracle.spatial.util.*,oracle.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>no title text</title>
</head>
<body>
<%
response.addHeader("Access-Control-Allow-Origin", "http://192.168.14.216:8888");//oracle.spatial.geometry.*,oracle.jdbc.driver.*,oracle.sql.STRUCT;
//out.print("OK!");
String SQLStatement ="";
String sp =request.getParameter("sp");
//out.print(sp);
Class.forName("oracle.jdbc.driver.OracleDriver"); //加载JDBC驱动程序
//建立连接
String URL = "jdbc:oracle:thin:@localhost:1521:cad";
Connection conn = DriverManager.getConnection(URL,"cadadmin","cad");
/*if(conn.isClosed())
out.print("Failed to connect to the database!");
else
out.print("Succeed connecting to the database!");*/
Statement stmt=conn.createStatement();
//求sp房间所对应的对象集合
//SQLStatement = "select rm.x,rm.y,rm.z from table(select geom from room where idc = "+sp+") rm";
//SQLStatement = "select mo.x,mo.y,mo.z,mo.room_id from table(select NavWithPosIndoor(position4indoor("+pos1id+","+pos1x+","+pos1y+","+pos1z+"),position4indoor("+pos2id+","+pos2x+","+pos2y+","+pos2z+"),ind.indoor) from inSpace ind) mo";
SQLStatement = "select geom from room where idc = "+sp;
ResultSet res_room=stmt.executeQuery(SQLStatement);
if(res_room.next()){
STRUCT dbObject=(STRUCT)res_room.getObject(1);
JGeometry geom=JGeometry.load(dbObject);
int plen=geom.getNumPoints();//点个数
//out.print("plen"+plen);
double rmzb[]=new double[plen*2];
rmzb=geom.getOrdinatesArray();
for(int i=0;i<plen*2;++i)
{
out.print(rmzb[i]+",");
}
//String rmid=res_room.getString(1);
//out.print("room:"+rmid);
//String rmx=res_room.getString(2);
//String rmy=res_room.getString(3);
//String rmz=res_room.getString(4);
//out.print("room:"+rmid+" "+rmx+" ");//+rmy+" "+rmz+" ");
}
out.print("1");
stmt.close();
conn.close();
%>
</body>
</html>
其中，由于地图是在8888端口，而该jsp文件是在tomcat文件夹下webapps文件夹下新建的项目文件夹下，在8080端口。在chrome浏览器运行，需要如下代码：
response.addHeader("Access-Control-Allow-Origin", "http://192.168.14.216:8888");
然后由于用到JGeometry对象，JGeometry对象是在sdoapi.jar中提供的。其中需要用到sdoapi.jar和sdoutl.jar。所以需要在头信息的import里导入相应包：oracle.spatial.geometry.*,oracle.spatial.util.*,oracle.sql.*
import="java.sql.*,java.lang.*,oracle.spatial.geometry.*,oracle.spatial.util.*,oracle.sql.*"
我之前导入的是oracle.spatial.geometry.*,oracle.jdbc.driver.*,oracle.sql.STRUCT; 没有导入oracle.spatial.util.*，可能导致JGeometry类型报错。
之前都是在浏览器加载jsp页面时报错JGeometry是未定义类型。后来没报这个错了，但还是有问题，一直以为还是这个问题，以为JGeometry不可用。（因为之前报JGeometry错的时候，也是有时报错有时不报错。）
然后程序里，通过select geom 去除sdo_geometry对象，再进行getObject和load。其中getObject()中的索引是指总共的项索引，不是指Object的索引。比如第一个属性是String，第二个属性是sdo_geometry。则取值依次为getString(1)和getObject(2)。我之前是select *了，然后getObject(1)，所以是有问题的。(select * 出来的第一个是String，第二个是sdo_geometry)
SQLStatement = "select geom from room where idc = "+sp;
ResultSet res_room=stmt.executeQuery(SQLStatement);
if(res_room.next()){
STRUCT dbObject=(STRUCT)res_room.getObject(1);
JGeometry geom=JGeometry.load(dbObject);