mybatis框架-使用resultMap实现高级结果映射，collection属性的使用

需求：获取指定用户的用户信息和地址列表

修改user实体类  添加集合的引用。

/**
* 根绝用户id,获取该角色下的地址信息
* @param userID
* @return
*/
public User getUserListAddressByUserID(@Param("userID")Integer userID);

<resultMap type="User" id="userAddressList">
	<id property="id" column="id"/>
		<result property="userCode" column="userCode" />
		<result property="userName" column="userName" />
		<result property="userRole" column="userRole" />
		<!--User类中引用的List集合类  同样为了复用，也可以将collection的映射结果使用resultMap元素提到外边，这个和association的用法是相同的 -->
		<collection property="addressList" ofType="Address">
		<id property="id" column="b_id"/>
		<result property="contact" column="contact" />
		<result property="addressDesc" column="addressDesc" />
		<result property="tel" column="tel" />
		</collection>
	</resultMap>
	<select id="getUserListAddressByUserID" resultMap="userAddressList" parameterType="Integer">
	SELECT a.*,b.id as b_id,b.contact,b.addressdesc,b.tel from smbms_user a,smbms_address b where a.id=b.userid and a.id=#{userID}
	</select>

 package cn.smbms.pojo;

 import java.util.Date;
 import java.util.List;

 public class User {
     private Integer id; //id
     private String userCode; //用户编码
     private String userName; //用户名称
     private String userPassword; //用户密码
     private Integer gender;  //性别
     private Date birthday;  //出生日期
     private String phone;   //电话
     private String address; //地址
     private Integer userRole;    //用户角色
     private Integer createdBy;   //创建者
     private Date creationDate; //创建时间
     private Integer modifyBy;     //更新者
     private Date modifyDate;   //更新时间
     private Role role;//用户角色
     private List<Address> addressList;//一个用户有多个地址列表

     public List<Address> getAddressList() {
         return addressList;
     }
     public void setAddressList(List<Address> addressList) {
         this.addressList = addressList;
     }
     public Role getRole() {
         return role;
     }
     public void setRole(Role role) {
         this.role = role;
     }
     public Integer getId() {
         return id;
     }
     public void setId(Integer id) {
         this.id = id;
     }
     public String getUserCode() {
         return userCode;
     }
     public void setUserCode(String userCode) {
         this.userCode = userCode;
     }
     public String getUserName() {
         return userName;
     }
     public void setUserName(String userName) {
         this.userName = userName;
     }
     public String getUserPassword() {
         return userPassword;
     }
     public void setUserPassword(String userPassword) {
         this.userPassword = userPassword;
     }
     public Integer getGender() {
         return gender;
     }
     public void setGender(Integer gender) {
         this.gender = gender;
     }
     public Date getBirthday() {
         return birthday;
     }
     public void setBirthday(Date birthday) {
         this.birthday = birthday;
     }
     public String getPhone() {
         return phone;
     }
     public void setPhone(String phone) {
         this.phone = phone;
     }
     public String getAddress() {
         return address;
     }
     public void setAddress(String address) {
         this.address = address;
     }
     public Integer getUserRole() {
         return userRole;
     }
     public void setUserRole(Integer userRole) {
         this.userRole = userRole;
     }
     public Integer getCreatedBy() {
         return createdBy;
     }
     public void setCreatedBy(Integer createdBy) {
         this.createdBy = createdBy;
     }
     public Date getCreationDate() {
         return creationDate;
     }
     public void setCreationDate(Date creationDate) {
         this.creationDate = creationDate;
     }
     public Integer getModifyBy() {
         return modifyBy;
     }
     public void setModifyBy(Integer modifyBy) {
         this.modifyBy = modifyBy;
     }
     public Date getModifyDate() {
         return modifyDate;
     }
     public void setModifyDate(Date modifyDate) {
         this.modifyDate = modifyDate;
     }
 }

 @Test
     public void testGetUserListAddressByUserId(){
         SqlSession sqlSession = null;
         List<User> userList = new ArrayList<User>();
         User user=new User();
         try {
             sqlSession = MyBatisUtil.createSqlSession();

             user = sqlSession.getMapper(UserMapper.class).getUserListAddressByUserID(1);

         } catch (Exception e) {
             // TODO: handle exception
             e.printStackTrace();
         }finally{
             MyBatisUtil.closeSqlSession(sqlSession);
         }
         //去掉role类的属性是可以的
19         logger.debug("testGetUserListByRoleId roleid: " + user.getUserCode() + " and userName: " + user.getUserName()+"and userRoleName:"+11111111);
20         //这种写法控制台一行日志是输不出来的，因为用到了Role类中的属性
21         //    logger.debug("testGetUserListByRoleId roleid: " + user.getUserCode() + " and userName: " + user.getUserName()+"and userRoleName:"+user.getRole().getRoleName());
22             for(Address address: user.getAddressList()){
23                 logger.debug("testGetUserListAddressByUserId contact: " + address.getContact() + " and addressDesc: " + address.getAddressDesc()+"and tel:"+address.getTel());
24             }

     }