簡單理解:java
DAO數據庫訪問對象 實現鏈接數據庫 修改、添加等細節
service服務層 面向功能 把一個整個服務 細化 調用DAO
其實service其中都是一些方法 去調用DAO 甚至方法名都和DAO中同樣的
如某個service是用做用戶註冊的
其中可能包括檢測用戶名是否存在和插入用戶數據兩部分
分別調用DAO中具體實現 操縱數據庫
看起來邏輯更清晰而已sql
進一步說明:數據庫
Dao層實現是簡單的CRUD操做。至關於sql中的單條select,insert,upate,delete語句。
而service層就是具體業務的實現。通常屢次組合dao層的方法(dao層方法達到了重用目的),是多個數據庫操做的集合,能夠看作數據庫中的存儲過程,並且事務通常控制在service層。這些數據庫操做一塊兒提交或回滾。
固然,簡單的系統徹底能夠不劃分service層,只用dao層。但那這樣的話,代碼從用性就不高。this
用戶的Dao層spa
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
public
class
UserDaoHibernate
extends
BaseDaoHibernate
implements
IUserDao {
/**
* 增長用戶
*
* @param user
*/
public
Long addUser(User user) {
return
addEntityRetVal(user);
}
/**
* 經過id刪除用戶
*
* @param user
*/
public
void
deleteUser(Long id) {
User userPO = (User) getHibernateTemplate().load(
User.
class
, id);
deleteEntity(userPO);
}
/**
* 刪除用戶
*
* @param user
*/
public
void
deleteUser(User user) {
User userPO = (User) getHibernateTemplate().load(
User.
class
, user.getUserid());
deleteEntity(userPO);
}
/**
* 更新用戶
*
* @param user
*/
public
void
updateUser(User user) {
User userPO = (User) getHibernateTemplate().load(
User.
class
, user.getUserid());
BeanUtil.copyProperties(userPO, user);
updateEntity(userPO);
}
/**
* 經過id查詢用戶
*
* @param id
* @return
*/
public
User queryUserById(Long id) {
return
(User) getHibernateTemplate().load(User.
class
, id);
}
/**
* 經過用戶名字查詢用戶實體 -- 這個方法存在SQL注入攻擊問題
* @param usernme
* @return
*/
public
User queryUserByName(String username){
String hql =
"select u from User u where u.username = '"
+ username +
"'"
;
return
(User)
this
.queryObjectByHql(hql);
}
/**
* 查詢全部用戶
*
* @return
*/
public
List<User> queryAllUser() {
return
queryAllEntitys(User.
class
);
}
/**
* 分頁查詢用戶
*/
public
List<User> queryAllUser(String hql,
int
currentPage,
int
pageSize) {
return
queryAllEntitys(currentPage,pageSize,hql);
//調用的是有currentPage的分頁方法
}
/**
*
* 經過用戶id查詢用戶名稱,查不到返回 null
* @param id
* @return
*/
public
String queryNameById(Long id){
String hql =
" from User d where d.userId = ?"
;
List<?> users = getHibernateTemplate().find(hql,id);
if
(users.size()>
0
){
return
((User)users.get(
0
)).getUsername();
}
else
{
return
null
;
}
}
/**
* 獲得用戶分頁記錄總數
* @param parentId
* @return
*/
/*
public Long queryTotalNumberOfUser(){
String hql = "select count(*) from User";
List<?> childNumber = getHibernateTemplate().find(hql);
return (Long)childNumber.get(0);
}*/
public int queryAllUserNubmer(String hql){
return queryAllEntitysNumer(hql);
}
/**
* 查詢用戶的權限
* @param userId
* @return
*/
public List<UserAuth> queryFunctionOnlyByUserId(Long userId){
String hql = "select ua from UserAuth ua where ua.userid = " + userId;
List<UserAuth> userAuths = queryAllObjectByHql(hql);
return userAuths;
}
/**
* 查詢用戶的角色
* @param userId
* @return
*/
@SuppressWarnings
(
"unchecked"
)
public
List<UserRole> queryRoleOnlyByUserId(Long userId){
String hql =
"select ur from UserRole ur where ur.userid = "
+ userId;
List<UserRole> userAuths = queryAllObjectByHql(hql);
return
userAuths;
}
}
|
service層,又可細化爲查詢業務UserHelper,還有增長,更新,刪除業務集中在UserFacade中。這裏貼出UserHelper.java.net
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
@WebService
public
class
UserHelper
implements
IUserHelper {
private
IUserDao userDao =
null
;
private
IDepartmentDao departDao =
null
;
private
IFunctionHelper functionHelper =
null
;
private
IRoleHelper roleHelper =
null
;
public
void
setUserDao(IUserDao userDao) {
this
.userDao = userDao;
}
public
void
setFunctionHelper(IFunctionHelper functionHelper) {
this
.functionHelper = functionHelper;
}
public
void
setDepartDao(IDepartmentDao departDao) {
this
.departDao = departDao;
}
public
void
setRoleHelper(IRoleHelper roleHelper) {
this
.roleHelper = roleHelper;
}
/**
* 經過id查詢權限,沒有則返回null
*
* @param id
* @return
*/
public
UserVO queryUserById(Long id)
throws
GeneralException {
User user =
null
;
try
{
user = userDao.queryUserById(id);
}
catch
(Exception e) {
e.printStackTrace();
throw
new
GeneralException(
"error.userDeatil"
,
"經過id查詢權限時出錯!"
);
}
// PO 轉 VO
UserVO userVO = userPoToVo(user);
return
userVO;
}
/**
* 獲得全部權限的集合,沒有則返回 null
*
* @return
*/
public
List<UserVO> queryAllUser()
throws
GeneralException {
List<UserVO> allFuncVOs =
new
ArrayList<UserVO>();
List<User> allFuncs =
null
;
try
{
allFuncs = userDao.queryAllUser();
}
catch
(Exception e) {
throw
new
GeneralException(
"error.userList"
,
"獲得全部權限的集合時出錯!"
);
}
for
(Iterator<?> iterator = allFuncs.iterator(); iterator.hasNext();) {
User user = (User) iterator.next();
// PO 轉 VO
UserVO userVO = userPoToVo(user);
allFuncVOs.add(userVO);
}
return
allFuncVOs;
}
/**
* 權限的PO 到 VO 轉換的方法
*
* @param user
* @return
*/
public
UserVO userPoToVo(User user)
throws
GeneralException {
UserVO userVO =
new
UserVO();
BeanUtil.copyProperties(userVO, user);
try
{
userVO.setDepartName(departDao.queryNameById(user.getDepartid()));
// 設置部門名稱
}
catch
(Exception e) {
throw
new
GeneralException(
"error.user"
,
" 權限的PO 到 VO 轉換時出錯!"
);
}
if
(userVO.getStatus().equals(
"1"
)){
userVO.setStatus(
"可用"
);
}
else
{
userVO.setStatus(
"不可用"
);
}
userVO.setRegisterName(
"ZHANG"
);
userVO.setChangerName(
"ZHANG"
);
return
userVO;
}
/**
* 經過分頁查詢權限信息集合
*
* @param hql
* @param currentPage
* @param pageSize
* @return
* @throws GeneralException
*/
public
List<UserVO> queryUserByPage(String hql,
int
currentPage,
int
pageSize)
throws
GeneralException {
List<UserVO> allFuncVOs =
new
ArrayList<UserVO>();
List<User> allFuncs =
null
;
try
{
allFuncs = userDao.queryAllUser(hql, currentPage, pageSize);
}
catch
(Exception e) {
throw
new
GeneralException(
"error.userList"
,
"分頁獲得權限的集合時出錯!"
);
}
for
(Iterator<?> iterator = allFuncs.iterator(); iterator.hasNext();) {
User user = (User) iterator.next();
// PO 轉 VO
UserVO userVO = userPoToVo(user);
allFuncVOs.add(userVO);
}
return
allFuncVOs;
}
/**
* 返回User分頁對象
*
* @param currentPage
* @return
*/
public
Pagination getPagination(
int
currentPage, String hql) {
return
new
Pagination(currentPage,
DisplayRecordCount.DISPLAY_IN_USER_LIST, userDao
.queryAllUserNubmer(hql));
}
/**
* 查到用戶的全部角色ID
*
* @param userId
* @return
* @throws GeneralException
*/
public
List<Long> queryAllRoleidsOfUser(Long userId)
throws
GeneralException {
List<Long> rolesOfUser =
new
ArrayList<Long>();
List<UserRole> userRoles =
null
;
try
{
userRoles = userDao.queryRoleOnlyByUserId(userId);
// 查到角色權限
}
catch
(Exception e) {
throw
new
GeneralException(
"error.userRoleidsList"
,
"獲得用戶的角色ID集合出錯!"
);
}
for
(Iterator<?> iterator = userRoles.iterator(); iterator.hasNext();) {
UserRole userRole = (UserRole) iterator.next();
Long roleid = userRole.getRoleid();
rolesOfUser.add(roleid);
}
return
rolesOfUser;
}
/**
* 查到用戶的全部角色
*
* @param userId
* @return
* @throws GeneralException
*/
public
List<RoleVO> queryAllRoleOfUser(Long userId)
throws
GeneralException {
List<Long> rolesOfUser =
new
ArrayList<Long>();
List<RoleVO> userRoles =
new
ArrayList<RoleVO>();
try
{
rolesOfUser = queryAllRoleidsOfUser(userId);
for
(Iterator<?> iterator = rolesOfUser.iterator(); iterator
.hasNext();) {
Long roleid = (Long) iterator.next();
RoleVO roleVO = roleHelper.queryRoleById(roleid);
userRoles.add(roleVO);
}
}
catch
(Exception e) {
e.printStackTrace();
throw
new
GeneralException(
"error.userRoleList"
,
"獲得用戶的角色集合出錯!"
);
}
return
userRoles;
}
/**
* 查詢用戶的全部權限 1.查詢全部用戶的權限 2.查詢全部用戶的角色 3.查詢全部用戶的權限+角色的權限-共同的權限
*
* @param userId
* @return
*/
public
List<FunctionVO> queryAllFunctionOfUser(Long userId,String system)
throws
GeneralException {
Set<FunctionVO> userAllFuncs =
new
HashSet<FunctionVO>();
List<FunctionVO> userAllFuncsList =
new
ArrayList<FunctionVO>();
try
{
List<UserAuth> userFuncs = userDao
.queryFunctionOnlyByUserId(userId);
// 查到權限
if
(userFuncs !=
null
) {
for
(Iterator<?> iterator = userFuncs.iterator(); iterator
.hasNext();) {
UserAuth userFunc = (UserAuth) iterator.next();
Long funcId = userFunc.getFuncid();
FunctionVO funcVO = functionHelper
.queryFunctionById(funcId);
userAllFuncs.add(funcVO);
}
}
List<UserRole> userRoles = userDao.queryRoleOnlyByUserId(userId);
// 查到角色
if
(userRoles !=
null
) {
// 查到全部角色的全部權限,將權限放入到userAllFuncs中
for
(Iterator<?> iterator = userRoles.iterator(); iterator
.hasNext();) {
UserRole userRole = (UserRole) iterator.next();
Long roleId = userRole.getRoleid();
List<FunctionVO> funcVOs = roleHelper
.queryFunctionOfRole(roleId);
for
(Iterator<?> iterator2 = funcVOs.iterator(); iterator2
.hasNext();) {
FunctionVO functionVO = (FunctionVO) iterator2.next();
userAllFuncs.add(functionVO);
}
}
}
// 將篩選了數據的無序Set集合轉換爲有序的List集合.必定要從小到大,不然權限樹顯示就會有問題
for
(Iterator<?> iterator = userAllFuncs.iterator(); iterator
.hasNext();) {
FunctionVO userAllFun = (FunctionVO) iterator.next();
if
(system.equals(
"crm"
)){
if
(userAllFun.getFuncid()>=20000000l){
userAllFuncsList.add(userAllFun);
}
}
else
if
(system.equals(
"hr"
)){
if
(userAllFun.getFuncid()<20000000l){
userAllFuncsList.add(userAllFun);
}
}
}
FunctionComparator fc =
new
FunctionComparator();
Collections.sort(userAllFuncsList, fc);
}
catch
(Exception e) {
e.printStackTrace();
throw
new
GeneralException(
"error.userAllFuncsList"
,
"獲得用戶的權限集合出錯!"
);
}
return
userAllFuncsList;
}
}
|