Security 登录实现这个博主的可以亲测

https://www.jianshu.com/p/650a497b3a40

第一步，在pom.xml中引入Security配置文件


    org.springframework.boot     
    spring-boot-starter-security

第二步，增加Configuration配置文件

import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.DisabledException;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * 参考网址：
 * https://blog.csdn.net/XlxfyzsFdblj/article/details/82083443
 * https://blog.csdn.net/lizc_lizc/article/details/84059004
 * https://blog.csdn.net/XlxfyzsFdblj/article/details/82084183
 * https://blog.csdn.net/weixin_36451151/article/details/83868891
 * 查找了很多文件，有用的还有有的，感谢他们的辛勤付出
 * Security配置文件，项目启动时就加载了
 * @author 程就人生
 *
 */
@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {      
    
    @Autowired
    private MyPasswordEncoder myPasswordEncoder;
    
    @Autowired
    private UserDetailsService myCustomUserService;
    
    @Autowired
    private ObjectMapper objectMapper;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
    
        http
        .authenticationProvider(authenticationProvider())
        .httpBasic()
        //未登录时，进行json格式的提示，很喜欢这种写法，不用单独写一个又一个的类
            .authenticationEntryPoint((request,response,authException) -> {
                response.setContentType("application/json;charset=utf-8");
                response.setStatus(HttpServletResponse.SC_FORBIDDEN);
                PrintWriter out = response.getWriter();
                Map map = new HashMap();
                map.put("code",403);
                map.put("message","未登录");
                out.write(objectMapper.writeValueAsString(map));
                out.flush();
                out.close();
            })
            
            .and()
            .authorizeRequests()
            .anyRequest().authenticated() //必须授权才能范围
            
            .and()
            .formLogin() //使用自带的登录
            .permitAll()
            //登录失败，返回json
            .failureHandler((request,response,ex) -> {
                response.setContentType("application/json;charset=utf-8");
                response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
                PrintWriter out = response.getWriter();
                Map map = new HashMap();
                map.put("code",401);
                if (ex instanceof UsernameNotFoundException || ex instanceof BadCredentialsException) {
                    map.put("message","用户名或密码错误");
                } else if (ex instanceof DisabledException) {
                    map.put("message","账户被禁用");
                } else {
                    map.put("message","登录失败!");
                }
                out.write(objectMapper.writeValueAsString(map));
                out.flush();
                out.close();
            })
            //登录成功，返回json
            .successHandler((request,response,authentication) -> {
                Map map = new HashMap();
                map.put("code",200);
                map.put("message","登录成功");
                map.put("data",authentication);
                response.setContentType("application/json;charset=utf-8");
                PrintWriter out = response.getWriter();
                out.write(objectMapper.writeValueAsString(map));
                out.flush();
                out.close();
            })
            .and()
            .exceptionHandling()
            //没有权限，返回json
            .accessDeniedHandler((request,response,ex) -> {
                response.setContentType("application/json;charset=utf-8");
                response.setStatus(HttpServletResponse.SC_FORBIDDEN);
                PrintWriter out = response.getWriter();
                Map map = new HashMap();
                map.put("code",403);
                map.put("message", "权限不足");
                out.write(objectMapper.writeValueAsString(map));
                out.flush();
                out.close();
            })
            .and()
            .logout()
            //退出成功，返回json
            .logoutSuccessHandler((request,response,authentication) -> {
                Map map = new HashMap();
                map.put("code",200);
                map.put("message","退出成功");
                map.put("data",authentication);
                response.setContentType("application/json;charset=utf-8");
                PrintWriter out = response.getWriter();
                out.write(objectMapper.writeValueAsString(map));
                out.flush();
                out.close();
            })
            .permitAll();
            //开启跨域访问
            http.cors().disable();
            //开启模拟请求，比如API POST测试工具的测试，不开启时，API POST为报403错误
            http.csrf().disable();
    }
    
    @Override
    public void configure(WebSecurity web) {
        //对于在header里面增加token等类似情况，放行所有OPTIONS请求。
        web.ignoring().antMatchers(HttpMethod.OPTIONS, "/**");
    }

    @Bean
    public AuthenticationProvider authenticationProvider() {
        DaoAuthenticationProvider authenticationProvider = new DaoAuthenticationProvider();
        //对默认的UserDetailsService进行覆盖
        authenticationProvider.setUserDetailsService(myCustomUserService);
        authenticationProvider.setPasswordEncoder(myPasswordEncoder);
        return authenticationProvider;
    }
    
}

第三步，实现UserDetailsService接口

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.Component;
/**
 * 登录专用类
 * 自定义类，实现了UserDetailsService接口，用户登录时调用的第一类
 * @author 程就人生
 *
 */
@Component
public class MyCustomUserService implements UserDetailsService {

    /**
     * 登陆验证时，通过username获取用户的所有权限信息
     * 并返回UserDetails放到spring的全局缓存SecurityContextHolder中，以供授权器使用
     */
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        //在这里可以自己调用数据库，对username进行查询，看看在数据库中是否存在
        MyUserDetails myUserDetail = new MyUserDetails();
        myUserDetail.setUsername(username);
        myUserDetail.setPassword("123456");
        return myUserDetail;
    }
}

说明：这个类，主要是用来接收登录传递过来的用户名，然后可以在这里扩展，查询该用户名在数据库中是否存在，不存在时，可以抛出异常。本测试为了演示，把数据写死了。

第四步，实现PasswordEncoder接口

import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Component;
/**
 * 自定义的密码加密方法，实现了PasswordEncoder接口
 * @author 程就人生
 *
 */
@Component
public class MyPasswordEncoder implements PasswordEncoder {

    @Override
    public String encode(CharSequence charSequence) {
        //加密方法可以根据自己的需要修改
        return charSequence.toString();
    }

    @Override
    public boolean matches(CharSequence charSequence, String s) {
        return encode(charSequence).equals(s);
    }
}

说明：这个类主要是对密码加密的处理，以及用户传递过来的密码和数据库密码（UserDetailsService中的密码）进行比对。

第五步，实现UserDetails接口

import java.util.Collection;

import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;

/**
 * 实现了UserDetails接口，只留必需的属性，也可添加自己需要的属性
 * @author 程就人生
 *
 */
@Component
public class MyUserDetails implements UserDetails {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    //登录用户名
    private String username;
    //登录密码
    private String password;

    private Collection<? extends GrantedAuthority> authorities;

    public void setUsername(String username) {
        this.username = username;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public void setAuthorities(Collection<? extends GrantedAuthority> authorities) {
        this.authorities = authorities;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return this.authorities;
    }

    @Override
    public String getPassword() {
        return this.password;
    }

    @Override
    public String getUsername() {
        return this.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;
    }
}

说明：这个类是用来存储登录成功后的用户数据，登录成功后，可以使用下列代码获取：

MyUserDetails myUserDetails= (MyUserDetails) SecurityContextHolder.getContext().getAuthentication() .getPrincipal();

登录后，推出，再访问要权限的地址接口返回403

SpingBoot

Security 登录实现这个博主的可以亲测

第一步，在pom.xml中引入Security配置文件

第二步，增加Configuration配置文件

第三步，实现UserDetailsService接口

第四步，实现PasswordEncoder接口

第五步，实现UserDetails接口

相关

spingboot中使用scheduled设置定时任务注意事项

标签

Security 登录实现 这个博主的可以 亲测

第一步，在pom.xml中引入Security配置文件

第二步，增加Configuration配置文件

第三步，实现UserDetailsService接口

第四步，实现PasswordEncoder接口

第五步，实现UserDetails接口

相关

spingboot中使用scheduled设置定时任务注意事项

标签

Security 登录实现这个博主的可以亲测