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>
1 package cn.smbms.pojo;
2
3 import java.util.Date;
4 import java.util.List;
5
6 public class User {
7 private Integer id; //id
8 private String userCode; //用户编码
9 private String userName; //用户名称
10 private String userPassword; //用户密码
11 private Integer gender; //性别
12 private Date birthday; //出生日期
13 private String phone; //电话
14 private String address; //地址
15 private Integer userRole; //用户角色
16 private Integer createdBy; //创建者
17 private Date creationDate; //创建时间
18 private Integer modifyBy; //更新者
19 private Date modifyDate; //更新时间
20 private Role role;//用户角色
21 private List<Address> addressList;//一个用户有多个地址列表
22
23
24
25 public List<Address> getAddressList() {
26 return addressList;
27 }
28 public void setAddressList(List<Address> addressList) {
29 this.addressList = addressList;
30 }
31 public Role getRole() {
32 return role;
33 }
34 public void setRole(Role role) {
35 this.role = role;
36 }
37 public Integer getId() {
38 return id;
39 }
40 public void setId(Integer id) {
41 this.id = id;
42 }
43 public String getUserCode() {
44 return userCode;
45 }
46 public void setUserCode(String userCode) {
47 this.userCode = userCode;
48 }
49 public String getUserName() {
50 return userName;
51 }
52 public void setUserName(String userName) {
53 this.userName = userName;
54 }
55 public String getUserPassword() {
56 return userPassword;
57 }
58 public void setUserPassword(String userPassword) {
59 this.userPassword = userPassword;
60 }
61 public Integer getGender() {
62 return gender;
63 }
64 public void setGender(Integer gender) {
65 this.gender = gender;
66 }
67 public Date getBirthday() {
68 return birthday;
69 }
70 public void setBirthday(Date birthday) {
71 this.birthday = birthday;
72 }
73 public String getPhone() {
74 return phone;
75 }
76 public void setPhone(String phone) {
77 this.phone = phone;
78 }
79 public String getAddress() {
80 return address;
81 }
82 public void setAddress(String address) {
83 this.address = address;
84 }
85 public Integer getUserRole() {
86 return userRole;
87 }
88 public void setUserRole(Integer userRole) {
89 this.userRole = userRole;
90 }
91 public Integer getCreatedBy() {
92 return createdBy;
93 }
94 public void setCreatedBy(Integer createdBy) {
95 this.createdBy = createdBy;
96 }
97 public Date getCreationDate() {
98 return creationDate;
99 }
100 public void setCreationDate(Date creationDate) {
101 this.creationDate = creationDate;
102 }
103 public Integer getModifyBy() {
104 return modifyBy;
105 }
106 public void setModifyBy(Integer modifyBy) {
107 this.modifyBy = modifyBy;
108 }
109 public Date getModifyDate() {
110 return modifyDate;
111 }
112 public void setModifyDate(Date modifyDate) {
113 this.modifyDate = modifyDate;
114 }
115 }
1 @Test
2 public void testGetUserListAddressByUserId(){
3 SqlSession sqlSession = null;
4 List<User> userList = new ArrayList<User>();
5 User user=new User();
6 try {
7 sqlSession = MyBatisUtil.createSqlSession();
8
9
10 user = sqlSession.getMapper(UserMapper.class).getUserListAddressByUserID(1);
11
12 } catch (Exception e) {
13 // TODO: handle exception
14 e.printStackTrace();
15 }finally{
16 MyBatisUtil.closeSqlSession(sqlSession);
17 }
18 //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 }
25
26 }
原文地址：https://www.cnblogs.com/dongyaotou/p/12006132.html