public @interface TokenToMallUser { // 当前用户在request中的名字 String value() default "user"; }
时间: 2024-04-17 18:29:09 浏览: 66
这段代码定义了一个名为TokenToMallUser的注解(Annotation)。注解使用关键字@interface进行定义。
该注解具有一个属性value,用于指定当前用户在request中的名字,默认值为"user"。注解属性的定义方式与接口方法类似,可以指定属性的类型和默认值。
使用该注解时,可以通过指定value属性的值来设置当前用户在request中的名字。例如:
@TokenToMallUser(value = "currentUser")
public void processRequest(HttpServletRequest request) {
// 处理请求
}
在上述代码中,@TokenToMallUser注解被应用于一个方法上,并且通过value属性设置了当前用户在request中的名字为"currentUser"。
相关问题
我使用 MySQL 创建了一个用户表TbUser,并且使用@GetMapping("/deleteListUsers") public String deleteListUsers(@RequestParam(defaultValue = "1") int pageNum, Model model) { Page<TbUser> page = tbUserService.findUsers(pageNum); List<TbUser> userList = page.getContent(); model.addAttribute("userList", userList); model.addAttribute("currentPage", pageNum); model.addAttribute("totalPages", page.getTotalPages()); return "management/user-delete"; }完成了用户分页查询功能,查询的结果返回了user-delete.html,请帮使用springboot+hibernate+thymeleaf帮助我完删除单个用户的功能,包含DAO、Controller、Entity、Service
好的,我可以帮你完成这个任务。首先,我们需要先定义一个用户实体类`TbUser`,它应该包含用户的基本信息,如下所示:
```java
@Entity
@Table(name = "tb_user")
public class TbUser {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String username;
private String password;
private String email;
// getter and setter methods
}
```
接下来,我们需要定义一个`TbUserService`的接口和实现类`TbUserServiceImpl`,用于实现用户的相关操作,如下所示:
```java
public interface TbUserService {
Page<TbUser> findUsers(int pageNum);
TbUser findUserById(Long id);
void deleteUserById(Long id);
}
@Service
public class TbUserServiceImpl implements TbUserService {
@Autowired
TbUserDao tbUserDao;
@Override
public Page<TbUser> findUsers(int pageNum) {
Pageable pageable = PageRequest.of(pageNum - 1, 10, Sort.by("id").ascending());
return tbUserDao.findAll(pageable);
}
@Override
public TbUser findUserById(Long id) {
return tbUserDao.findById(id).orElse(null);
}
@Override
public void deleteUserById(Long id) {
tbUserDao.deleteById(id);
}
}
```
然后,我们需要定义一个`TbUserDao`接口,它继承了`JpaRepository`,用于实现对用户表的基本操作,如下所示:
```java
public interface TbUserDao extends JpaRepository<TbUser, Long> {
}
```
接下来,我们需要定义一个`TbUserController`类,用于处理与用户相关的请求,如下所示:
```java
@Controller
@RequestMapping("/user")
public class TbUserController {
@Autowired
TbUserService tbUserService;
@GetMapping("/deleteListUsers")
public String deleteListUsers(@RequestParam(defaultValue = "1") int pageNum, Model model) {
Page<TbUser> page = tbUserService.findUsers(pageNum);
List<TbUser> userList = page.getContent();
model.addAttribute("userList", userList);
model.addAttribute("currentPage", pageNum);
model.addAttribute("totalPages", page.getTotalPages());
return "management/user-delete";
}
@GetMapping("/deleteUser/{id}")
public String deleteUser(@PathVariable Long id) {
tbUserService.deleteUserById(id);
return "redirect:/user/deleteListUsers";
}
}
```
最后,在`user-delete.html`文件中,我们需要添加一个删除用户的链接,如下所示:
```html
<a th:href="@{/user/deleteUser/{id}(id=${user.id})}" onclick="return confirm('确定要删除吗?')">删除</a>
```
这样,当用户点击删除链接时,会调用`TbUserController`中的`deleteUser`方法,删除指定用户,并重定向到`deleteListUsers`方法,刷新用户列表。
我使用 MySQL 创建了一个用户表TbUser,并且使用@GetMapping("/alterListUsers") public String alterListUsers(@RequestParam(defaultValue = "1") int pageNum, Model model) { Page<TbUser> page = tbUserService.findUsers(pageNum); List<TbUser> userList = page.getContent(); model.addAttribute("userList", userList); model.addAttribute("currentPage", pageNum); model.addAttribute("totalPages", page.getTotalPages()); return "management/user-alter"; }完成了用户分页查询功能,查询的结果返回了user-alter.html,请使用springboot+hibernate+thymeleaf帮助我完成编辑用户的功能,点击编辑按钮后,弹窗一个表单可以修改用户所有信息,点击确定后将信息保存到数据库,包含DAO、Controller、Entity、Service、impl的详细代码
好的,以下是实现编辑用户的代码:
**TbUser.java(Entity):**
```java
@Entity
@Table(name = "tb_user")
public class TbUser {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(nullable = false, unique = true)
private String username;
private String password;
@Column(nullable = false)
private String email;
// getters and setters
// equals and hashCode
}
```
**TbUserRepository.java(DAO):**
```java
@Repository
public interface TbUserRepository extends JpaRepository<TbUser, Long> {
}
```
**TbUserService.java(Service):**
```java
@Service
public class TbUserService {
@Autowired
private TbUserRepository tbUserRepository;
public Page<TbUser> findUsers(int pageNum) {
return tbUserRepository.findAll(PageRequest.of(pageNum - 1, 10));
}
public TbUser findById(Long id) {
return tbUserRepository.findById(id).orElse(null);
}
public TbUser save(TbUser tbUser) {
return tbUserRepository.save(tbUser);
}
}
```
**TbUserServiceImpl.java(Service实现类):**
```java
@Service
public class TbUserServiceImpl implements TbUserService {
@Autowired
private TbUserRepository tbUserRepository;
@Override
public Page<TbUser> findUsers(int pageNum) {
return tbUserRepository.findAll(PageRequest.of(pageNum - 1, 10));
}
@Override
public TbUser findById(Long id) {
return tbUserRepository.findById(id).orElse(null);
}
@Override
public TbUser save(TbUser tbUser) {
return tbUserRepository.save(tbUser);
}
}
```
**UserController.java(Controller):**
```java
@Controller
@RequestMapping("/management")
public class UserController {
@Autowired
private TbUserService tbUserService;
@GetMapping("/alterListUsers")
public String alterListUsers(@RequestParam(defaultValue = "1") int pageNum, Model model) {
Page<TbUser> page = tbUserService.findUsers(pageNum);
List<TbUser> userList = page.getContent();
model.addAttribute("userList", userList);
model.addAttribute("currentPage", pageNum);
model.addAttribute("totalPages", page.getTotalPages());
return "management/user-alter";
}
@GetMapping("/editUser/{id}")
public String editUser(@PathVariable Long id, Model model) {
TbUser tbUser = tbUserService.findById(id);
if (tbUser != null) {
model.addAttribute("tbUser", tbUser);
return "management/user-edit";
} else {
return "redirect:/management/alterListUsers";
}
}
@PostMapping("/saveUser")
public String saveUser(TbUser tbUser) {
tbUserService.save(tbUser);
return "redirect:/management/alterListUsers";
}
}
```
**user-alter.html(用户列表页面):**
```html
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>用户列表</title>
</head>
<body>
<table>
<thead>
<tr>
<th>ID</th>
<th>用户名</th>
<th>邮箱</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<tr th:each="tbUser : ${userList}">
<td th:text="${tbUser.id}"></td>
<td th:text="${tbUser.username}"></td>
<td th:text="${tbUser.email}"></td>
<td>
<a th:href="@{/management/editUser/__${tbUser.id}__}">编辑</a>
</td>
</tr>
</tbody>
</table>
<div>
<ul>
<li th:if="${currentPage != 1}">
<a th:href="@{/management/alterListUsers(pageNum=1)}">首页</a>
</li>
<li th:if="${currentPage > 1}">
<a th:href="@{/management/alterListUsers(pageNum=${currentPage - 1})}">上一页</a>
</li>
<li th:if="${currentPage < totalPages}">
<a th:href="@{/management/alterListUsers(pageNum=${currentPage + 1})}">下一页</a>
</li>
<li th:if="${currentPage != totalPages}">
<a th:href="@{/management/alterListUsers(pageNum=${totalPages})}">尾页</a>
</li>
</ul>
</div>
</body>
</html>
```
**user-edit.html(用户编辑页面):**
```html
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>编辑用户信息</title>
</head>
<body>
<form th:action="@{/management/saveUser}" method="post">
<input type="hidden" th:field="*{id}"/>
<div>
<label>用户名:</label>
<input type="text" th:field="*{username}"/>
</div>
<div>
<label>密码:</label>
<input type="password" th:field="*{password}"/>
</div>
<div>
<label>邮箱:</label>
<input type="email" th:field="*{email}"/>
</div>
<div>
<button type="submit">保存</button>
</div>
</form>
</body>
</html>
```
以上就是实现编辑用户功能的详细代码。
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