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package com.gitee.linmt.realm;
import com.gitee.linmt.entity.Permission;
import com.gitee.linmt.entity.Role;
import com.gitee.linmt.entity.UserInfo;
import com.gitee.linmt.service.UserInfoService;
import lombok.extern.slf4j.Slf4j;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.stereotype.Component;
/**
* @author linmt
*/
@Slf4j
@Component
public class DatabaseRealm extends AuthorizingRealm {
private final UserInfoService userInfoService;
public DatabaseRealm(UserInfoService userInfoService) {
this.userInfoService = userInfoService;
}
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
log.info("权限配置:DatabaseRealm.doGetAuthorizationInfo()");
SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
UserInfo userInfo = (UserInfo) principalCollection.getPrimaryPrincipal();
for (Role role : userInfo.getRoleList()) {
authorizationInfo.addRole(role.getRole());
for (Permission p : role.getPermissions()) {
authorizationInfo.addStringPermission(p.getPermission());
}
}
return authorizationInfo;
}
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
log.info("登陆认证:DatabaseRealm.doGetAuthenticationInfo()");
// 获取用户的输入的账号.
String username = (String) authenticationToken.getPrincipal();
// 通过 username 从数据库中查找 UserInfo 对象
// 实际项目中,这里可以根据实际情况做缓存,如果不做,Shiro自己也是有时间间隔机制,2分钟内不会重复执行该方法
UserInfo userInfo = userInfoService.findByUsername(username);
log.info("登陆人信息:{}", userInfo);
if (userInfo == null) {
// 实际项目中,登录人不存在时要抛出与之相对应的异常
return null;
}
SimpleAuthenticationInfo simpleAuthenticationInfo = new SimpleAuthenticationInfo(
userInfo,
userInfo.getPassword(),
getName()
);
simpleAuthenticationInfo.setCredentialsSalt(ByteSource.Util.bytes(userInfo.getSalt()));
return simpleAuthenticationInfo;
}
}
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