Spring Security自定义过滤器(更改密码)

关于Spring Security自定义过滤器的实现，可以参考以下步骤：

1. 创建自定义过滤器类，继承OncePerRequestFilter，并实现doFilterInternal方法。import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.security.core.userdetails.UserDetailsService; import org.springframework.security.core.userdetails.UsernameNotFoundException; import org.springframework.security.web.util.matcher.AntPathRequestMatcher; import org.springframework.security.web.util.matcher.RequestMatcher; import org.springframework.web.filter.OncePerRequestFilter; public class CustomFilter extends OncePerRequestFilter { private final UserDetailsService userDetailsService; private final RequestMatcher requestMatcher = new AntPathRequestMatcher("/changePassword", "POST"); public CustomFilter(UserDetailsService userDetailsService) { this.userDetailsService = userDetailsService; } @Override protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException { if (requestMatcher.matches(request)) { String username = request.getParameter("username"); String newPassword = request.getParameter("newPassword"); try { UserDetails userDetails = userDetailsService.loadUserByUsername(username); userDetails.setPassword(newPassword); SecurityContextHolder.getContext().setAuthentication(new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities())); } catch (UsernameNotFoundException e) { // handle exception } } filterChain.doFilter(request, response); } }import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.core.userdetails.UserDetailsService; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.security.crypto.password.PasswordEncoder; @Configuration @EnableWebSecurity public class SecurityConfig extends WebSecurityConfigurerAdapter { @Autowired private UserDetailsService userDetailsService; @Bean public PasswordEncoder passwordEncoder() { return new BCryptPasswordEncoder(); } @Override protected void configure(AuthenticationManagerBuilder auth) throws Exception { auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder()); } @Override protected void configure(HttpSecurity http) throws Exception { http.authorizeRequests() .antMatchers("/changePassword").hasRole("USER") .and() .formLogin() .and() .addFilter(new CustomFilter(userDetailsService)); } }import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.security.core.userdetails.UserDetailsService; import org.springframework.security.core.userdetails.UsernameNotFoundException; import org.springframework.stereotype.Service; @Service public class CustomUserDetailsService implements UserDetailsService { @Autowired private UserRepository userRepository; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { User user = userRepository.findByUsername(username); if (user == null) { throw new UsernameNotFoundException("User not found"); } return new org.springframework.security.core.userdetails.User(user.getUsername(), user.getPassword(), user.getAuthorities()); } }import org.springframework.security.core.GrantedAuthority; import org.springframework.security.core.userdetails.UserDetails; import java.util.Collection; public class User implements UserDetails { private String username; private String password; private Collection<? extends GrantedAuthority> authorities; public User(String username, String password, Collection<? extends GrantedAuthority> authorities) { 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; } }import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; @Repository public interface UserRepository extends JpaRepository<User, Long> { User findByUsername(String username); }spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase spring.datasource.username=root spring.datasource.password=mypassword spring.jpa.hibernate.ddl-auto=update <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> </dependencies>以上代码实现了一个简单的Spring Security自定义过滤器，用于更改密码。在实际应用中，可以根据需要进行相应的修改和扩展。
2. 在Spring Security配置类中注册自定义过滤器。
3. 在UserDetailsService接口中实现loadUserByUsername方法，根据用户名查询用户信息。
4. 在User实体类中实现UserDetails接口，并添加相关属性和方法。
5. 在UserRepository接口中实现findByUsername方法，根据用户名查询用户信息。
6. 在application.properties文件中配置数据库连接信息。
7. 在pom.xml文件中添加相关依赖。