relation_test.jsp

来自「< J2EE应用开发详解>>一书全部的源代码. 本书基于J」· JSP 代码 · 共 42 行

<%@ page import="java.io.IOException,java.util.*,javax.naming.*,javax.servlet.*,
javax.servlet.http.*,java.rmi.*,javax.rmi.PortableRemoteObject,javax.ejb.*,com.j2ee14.ch17.*"%>
<%@ page contentType="text/html;charset=gb2312"%>
<%

		StudentLocal student = null;
		AddressLocal address = null;
		ClassesLocal classes = null;
		CourseLocal course = null;

		try {
			// 创建初始上下文。并且查找EJB Home接口。
			Context ctx = new InitialContext();
			
			StudentLocalHome studentHome = (StudentLocalHome)ctx.lookup("ejb/StudentEJB");
			CourseLocalHome courseHome = (CourseLocalHome)ctx.lookup("ejb/CourseEJB");			
			ClassesLocalHome classesHome = (ClassesLocalHome)ctx.lookup("ejb/ClassesEJB");		
			AddressLocalHome addressHome = (AddressLocalHome)ctx.lookup("ejb/AddressEJB");	
		    
		    student=studentHome.findByPrimaryKey("hellking1");
		    address=addressHome.findByPrimaryKey("addr1");
		    classes=classesHome.findByPrimaryKey("classes1");
		    course=courseHome.findByPrimaryKey("course1");
		    
		    student.setAddress(address);
		    Collection courses=new ArrayList();
		    courses.add(course);
		    student.setCourses(courses);
		    student.setClasses(classes);
		    
		    Collection students=new ArrayList();
		    students.add(student);
		    classes.setStudents(students);		    
		    course.setStudents(students);
		    
		    
		}
		catch (Exception e) {
			out.println("<br>发生异常!");
			e.printStackTrace();
		}		
%>