ibatis学习之一对多关联
基于本人的这篇文章http://chenzheng8975.iteye.com/blog/1718765的基础上，对ibatis进行深入的学习：
Clazz.java:
package com.cz.model;import java.util.ArrayList;import java.util.List;public class Clazz {private int id;private String classname;private List<Student> student=new ArrayList<Student>();public int getId() {return id;}public void setId(int id) {this.id = id;}public String getClassname() {return classname;}public void setClassname(String classname) {this.classname = classname;}public List<Student> getStudent() {return student;}public void setStudent(List<Student> student) {this.student = student;}}?
Student.java:
package com.cz.model;public class Student {private int id;private String studentname;private int age;private int clazzid;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getStudentname() {return studentname;}public void setStudentname(String studentname) {this.studentname = studentname;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public int getClazzid() {return clazzid;}public void setClazzid(int clazzid) {this.clazzid = clazzid;}}?
Clazz.xml:
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE sqlMapPUBLIC "-//ibatis.apache.org//DTD SQL MAP 2.0//EN""http://ibatis.apache.org/dtd/sql-map-2.dtd"><sqlMap><typeAlias alias="Clazz" type="com.cz.model.Clazz"/><typeAlias alias="Student" type="com.cz.model.Student"/><resultMap id="get-clazz-result"><result property="id" column="id"/><result property="classname" column="classname"/><result property="student" column="id" select="getStudentByClazzId"/></resultMap><select id="getClazz" parameterresultMap="get-clazz-result"><![CDATA[select id,classnamefrom clazzwhere id=#id#]]></select><select id="getStudentByClazzId" parameterresultname="code">package com.cz.test;import java.io.Reader;import java.util.List;import com.cz.model.Clazz;import com.cz.model.Student;import com.ibatis.common.resources.Resources;import com.ibatis.sqlmap.client.SqlMapClient;import com.ibatis.sqlmap.client.SqlMapClientBuilder;public class MyTest {/** * @author xxx * @since Jan 9, 2013 * @Description: TODO(用一句话描述这个方法的作用) * @throws * @param args * void */public static void main(String[] args) {// TODO Auto-generated method stubtry {Reader reader = Resources.getResourceAsReader("SqlMapConfig.xml"); SqlMapClient sqlMap = SqlMapClientBuilder.buildSqlMapClient(reader); // sqlMap系统初始化完毕 Clazz clazz=(Clazz) sqlMap.queryForObject("getClazz", new Integer(1)); System.out.println("clazzid:"+clazz.getId()+",classname:" +clazz.getClassname()); List<Student> student=clazz.getStudent(); for(int i=0;i<student.size();i++){ System.out.println(student.get(i).getStudentname()+"-->" +student.get(i).getAge()); } } catch (Exception e) {// TODO: handle exceptione.printStackTrace();}}}?