给我写个token验证模版
时间: 2023-03-14 16:32:21 浏览: 50
我可以为您提供一个简单的Token验证模板,您可以根据自己的需要对其进行修改:1. 创建一个具有安全性及有效性的Token。
2. 在用户登录时,使用Token验证用户信息。
3. 为了防止Token被窃取,设置Token失效时间。
4. 当用户退出登录或者超时时,应该清除Token。
相关问题
写一个java单点登录模板
很抱歉,作为AI语言模型,我无法提供完整的Java单点登录模板。但是,以下是Java单点登录的基本流程和代码示例:
1. 用户访问需要登录的应用程序,应用程序检测到用户未登录,跳转到登录页面。
2. 用户输入用户名和密码,提交登录请求。
3. 应用程序将用户名和密码发送到认证服务器进行验证。
4. 认证服务器验证用户名和密码,生成一个令牌(token),并将令牌存储在服务器端(例如,使用Redis或Memcached等缓存技术)。
5. 认证服务器将令牌返回给应用程序。
6. 应用程序将令牌存储在客户端(例如,使用Cookie或LocalStorage等技术)。
7. 用户继续访问应用程序的其他页面,应用程序检测到客户端已经存储了令牌,将令牌发送给认证服务器进行验证。
8. 认证服务器验证令牌,如果令牌有效,则返回用户信息,应用程序使用该信息进行用户的身份认证,否则要求用户重新登录。
下面是Java单点登录的代码示例:
1. 登录页面
```html
<form method="post" action="/login">
<input type="text" name="username" placeholder="用户名">
<input type="password" name="password" placeholder="密码">
<button type="submit">登录</button>
</form>
```
2. 登录处理器
```java
@RequestMapping("/login")
public String login(HttpServletRequest request, HttpServletResponse response) {
String username = request.getParameter("username");
String password = request.getParameter("password");
if (authenticate(username, password)) {
String token = generateToken(username);
saveToken(response, token);
return "redirect:/home";
} else {
return "error";
}
}
```
3. 令牌验证器
```java
public User validateToken(String token) {
User user = null;
if (token != null) {
user = redisTemplate.opsForValue().get(token);
}
return user;
}
```
4. 令牌生成器
```java
private String generateToken(String username) {
String token = UUID.randomUUID().toString();
redisTemplate.opsForValue().set(token, new User(username), 60, TimeUnit.MINUTES);
return token;
}
```
5. 令牌存储器
```java
private void saveToken(HttpServletResponse response, String token) {
Cookie cookie = new Cookie("token", token);
cookie.setPath("/");
response.addCookie(cookie);
}
```
6. 认证过滤器
```java
public class AuthenticationFilter implements Filter {
@Autowired
private TokenValidator tokenValidator;
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest httpRequest = (HttpServletRequest) request;
HttpServletResponse httpResponse = (HttpServletResponse) response;
String token = getToken(httpRequest);
User user = tokenValidator.validateToken(token);
if (user != null) {
httpRequest.setAttribute("user", user);
chain.doFilter(request, response);
} else {
httpResponse.sendRedirect("/login");
}
}
private String getToken(HttpServletRequest request) {
String token = null;
Cookie[] cookies = request.getCookies();
if (cookies != null) {
for (Cookie cookie : cookies) {
if (cookie.getName().equals("token")) {
token = cookie.getValue();
break;
}
}
}
return token;
}
}
```
以上代码仅供参考,实际应用中需要根据具体需求进行修改和完善。
请给我一个用jwt和security做登录的模板
好的,以下是一个使用 JWT 和 Spring Security 实现登录认证的模板:
1. 添加依赖
在 pom.xml 文件中添加以下依赖:
```xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
```
2. 创建 User 类
创建一个 User 类来存储用户的信息,如下所示:
```java
public class User implements UserDetails {
private Long id;
private String username;
private String password;
private Collection<? extends GrantedAuthority> authorities;
public User(Long id, String username, String password, Collection<? extends GrantedAuthority> authorities) {
this.id = id;
this.username = username;
this.password = password;
this.authorities = authorities;
}
@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
return authorities;
}
@Override
public String getPassword() {
return password;
}
@Override
public String getUsername() {
return username;
}
@Override
public boolean isAccountNonExpired() {
return true;
}
@Override
public boolean isAccountNonLocked() {
return true;
}
@Override
public boolean isCredentialsNonExpired() {
return true;
}
@Override
public boolean isEnabled() {
return true;
}
}
```
3. 创建 JwtTokenUtil 类
创建一个 JwtTokenUtil 类来生成和验证 JWT,如下所示:
```java
public class JwtTokenUtil {
private static final String SECRET_KEY = "secret";
private static final long EXPIRATION_TIME = 864_000_000; // 10 days
private static final String TOKEN_PREFIX = "Bearer ";
private static final String HEADER_STRING = "Authorization";
public static String generateToken(UserDetails userDetails) {
Map<String, Object> claims = new HashMap<>();
claims.put("sub", userDetails.getUsername());
claims.put("created", new Date());
claims.put("authorities", userDetails.getAuthorities());
return Jwts.builder()
.setClaims(claims)
.setExpiration(new Date(System.currentTimeMillis() + EXPIRATION_TIME))
.signWith(SignatureAlgorithm.HS512, SECRET_KEY)
.compact();
}
public static Authentication getAuthentication(String token) {
Claims claims = Jwts.parser()
.setSigningKey(SECRET_KEY)
.parseClaimsJws(token)
.getBody();
Collection<? extends GrantedAuthority> authorities =
Arrays.stream(claims.get("authorities").toString().split(","))
.map(SimpleGrantedAuthority::new)
.collect(Collectors.toList());
UserDetails principal = new User(claims.getSubject(), "", authorities);
return new UsernamePasswordAuthenticationToken(principal, "", authorities);
}
public static boolean validateToken(String token) {
try {
Jwts.parser().setSigningKey(SECRET_KEY).parseClaimsJws(token);
return true;
} catch (JwtException | IllegalArgumentException e) {
return false;
}
}
public static String getTokenFromHeader(HttpServletRequest request) {
String header = request.getHeader(HEADER_STRING);
if (header != null && header.startsWith(TOKEN_PREFIX)) {
return header.replace(TOKEN_PREFIX, "");
}
return null;
}
}
```
4. 创建 JwtAuthenticationFilter 类
创建一个 JwtAuthenticationFilter 类来拦截登录请求并生成 JWT,如下所示:
```java
public class JwtAuthenticationFilter extends OncePerRequestFilter {
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
String username = request.getParameter("username");
String password = request.getParameter("password");
if (username != null && password != null) {
Authentication authentication = new UsernamePasswordAuthenticationToken(username, password);
Authentication result = getAuthenticationManager().authenticate(authentication);
if (result.isAuthenticated()) {
String token = JwtTokenUtil.generateToken(result.getPrincipal());
response.addHeader(JwtTokenUtil.HEADER_STRING, JwtTokenUtil.TOKEN_PREFIX + token);
}
}
filterChain.doFilter(request, response);
}
}
```
5. 配置 Spring Security
在 Spring Security 配置类中添加 JwtAuthenticationFilter,并禁用 CSRF 防护,如下所示:
```java
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private JwtAuthenticationFilter jwtAuthenticationFilter;
@Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable()
.authorizeRequests()
.antMatchers("/login").permitAll()
.anyRequest().authenticated()
.and()
.addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);
}
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication()
.withUser("admin").password("{noop}password").roles("ADMIN");
}
}
```
6. 实现登录接口
在 Controller 中实现登录接口,如下所示:
```java
@RestController
public class LoginController {
@PostMapping("/login")
public ResponseEntity<String> login(HttpServletRequest request) {
String token = JwtTokenUtil.getTokenFromHeader(request);
if (token != null && JwtTokenUtil.validateToken(token)) {
return ResponseEntity.ok("Login successful!");
}
return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("Invalid username or password!");
}
}
```
以上就是一个使用 JWT 和 Spring Security 实现登录认证的模板,你可以根据自己的需求进行修改。注意在实际应用中,需要将 SECRET_KEY 设置为随机的字符串,并将 EXPIRATION_TIME 设置为合适的值。