SpringBoot 使用jwt进行身份验证的方法示例

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这篇文章主要介绍了SpringBoot 使用jwt进行身份验证的方法示例，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧
这里只供参考，比较使用jwt方式进行身份验证感觉不好，最不行的就是不能退出
登陆时设定多长过期时间，只能等这个时间过了以后才算退出，服务端只能验证请求过来的token是否通过验证
code:

/**
 * created by qhong on 2018/6/7 15:34
 * 标注该注解的，就不需要登录
 **/
@target({elementtype.method,elementtype.type})
@retention(retentionpolicy.runtime)
@documented
public @interface authignore {
 
}

loginuser:

@target(elementtype.parameter)
@retention(retentionpolicy.runtime)
public @interface loginuser {
 
}

jwtutil:

@configurationproperties(prefix = "jwt")
@component
public class jwtutils {
  private logger logger = loggerfactory.getlogger(getclass());
 
  private string secret;
  private long expire;
  private string header;
 
  /**
   * 生成jwt token
   */
  public string generatetoken(long userid) {
  date nowdate = new date();
  //过期时间
  date expiredate = new date(nowdate.gettime() + expire * 1000);
 
  return jwts.builder()
    .setheaderparam("typ", "jwt")
    .setsubject(userid+"")
    .setissuedat(nowdate)
    .setexpiration(expiredate)
    .signwith(io.jsonwebtoken.signaturealgorithm.hs512, secret)
    .compact();
  }
 
  public claims getclaimbytoken(string token) {
  try {
    return jwts.parser()
      .setsigningkey(secret)
      .parseclaimsjws(token)
      .getbody();
  }catch (exception e){
    logger.debug("validate is token error ", e);
    return null;
  }
  }
 
  /**
   * token是否过期
   * @return true：过期
   */
  public boolean istokenexpired(date expiration) {
  return expiration.before(new date());
  }
 
  public string getsecret() {
  return secret;
  }
 
  public void setsecret(string secret) {
  this.secret = secret;
  }
 
  public long getexpire() {
  return expire;
  }
 
  public void setexpire(long expire) {
  this.expire = expire;
  }
 
  public string getheader() {
  return header;
  }
 
  public void setheader(string header) {
  this.header = header;
  }
}

application.properties配置：

# 加密秘钥
jwt.secret=f4e2e52034348f86b67cde581c0f9eb5
# token有效时长，单位秒
jwt.expire=60000
jwt.header=token

拦截器：

/**
 * created by qhong on 2018/6/7 15:36
 **/
@component
public class authorizationinterceptor extends handlerinterceptoradapter {
  @autowired
  private jwtutils jwtutils;
 
  public static final string user_key = "userid";
 
  @override
  public boolean prehandle(httpservletrequest request, httpservletresponse response, object handler) throws exception {
  authignore annotation;
  if(handler instanceof handlermethod) {
    annotation = ((handlermethod) handler).getmethodannotation(authignore.class);
  }else{
    return true;
  }
 
  //如果有@authignore注解，则不验证token
  if(annotation != null){
    return true;
  }
 
  //获取用户凭证
  string token = request.getheader(jwtutils.getheader());
  if(stringutils.isblank(token)){
    token = request.getparameter(jwtutils.getheader());
  }
 
  //token凭证为空
  if(stringutils.isblank(token)){
    throw new authexception(jwtutils.getheader() + "不能为空", httpstatus.unauthorized.value());
  }
 
  claims claims = jwtutils.getclaimbytoken(token);
  if(claims == null || jwtutils.istokenexpired(claims.getexpiration())){
    throw new authexception(jwtutils.getheader() + "失效，请重新登录", httpstatus.unauthorized.value());
  }
 
  //设置userid到request里，后续根据userid，获取用户信息
  request.setattribute(user_key, long.parselong(claims.getsubject()));
 
  return true;
  }
}

注解拦截：

@component
public class loginuserhandlermethodargumentresolver implements handlermethodargumentresolver {
  @autowired
  private userservice userservice;
 
  @override
  public boolean supportsparameter(methodparameter parameter) {
  return parameter.getparametertype().isassignablefrom(user.class) && parameter.hasparameterannotation(loginuser.class);
  }
 
  @override
  public object resolveargument(methodparameter parameter, modelandviewcontainer container,
         nativewebrequest request, webdatabinderfactory factory) throws exception {
  //获取用户id
  object object = request.getattribute(authorizationinterceptor.user_key, requestattributes.scope_request);
  if(object == null){
    return null;
  }
 
  //获取用户信息
  user user = userservice.selectbyid((long)object);
 
  return user;
  }
}

webconfig:

@configuration
public class webconfig extends webmvcconfigureradapter {
 
  @autowired
  private authorizationinterceptor authorizationinterceptor;
  @autowired
  private loginuserhandlermethodargumentresolver loginuserhandlermethodargumentresolver;
 
  @override
  public void addinterceptors(interceptorregistry registry) {
  registry.addinterceptor(authorizationinterceptor).addpathpatterns("/**");
  }
 
  @override
  public void addargumentresolvers(list<handlermethodargumentresolver> argumentresolvers) {
  argumentresolvers.add(loginuserhandlermethodargumentresolver);
  }
}

login:

@postmapping("/login")
@authignore
public r login2(@requestbody user u){
 
  //用户登录
  long userid =userservice.adduser(u);
 
  //生成token
  string token = jwtutils.generatetoken(userid);
 
  map<string, object> map = new hashmap<>();
  map.put("token", token);
  map.put("expire", jwtutils.getexpire());
 
  return r.ok(map);
}

loginuser注解使用：

@requestmapping(value="/query2",method= requestmethod.post)
  public user query2(@loginuser user u){
   return u;
  }

http://www.zzvips.com/article/172755.html
https://gitee.com/renrenio/renren-fast
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持CodeAE代码之家。
原文链接：https://www.cnblogs.com/hongdada/p/9152291.html