@RestController 
public class ServiceController { 
  @RequestMapping("/hello") 
  public String hello1(String[] param1, String param2) { 
    return "hello" + param1[0] + param1[1] + param2; 
  } 
} 

//使用指定的密码对内容生成消息摘要（散列值） 
public static String digest(String key, String content); 
//使用指定的密码对整个Map的内容生成消息摘要（散列值） 
public static String digest(String key, Map<String, ?> map)  

public class StatelessDefaultSubjectFactory extends DefaultWebSubjectFactory { 
  public Subject createSubject(SubjectContext context) { 
    //不创建session 
    context.setSessionCreationEnabled(false); 
    return super.createSubject(context); 
  } 
}  

public class StatelessAuthcFilter extends AccessControlFilter { 
 protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws Exception { 
   return false; 
 } 
 protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception { 
  //1、客户端生成的消息摘要 
  String clientDigest = request.getParameter(Constants.PARAM_DIGEST); 
  //2、客户端传入的用户身份 
String username = request.getParameter(Constants.PARAM_USERNAME); 
  //3、客户端请求的参数列表 
  Map<String, String[]> params =  
   new HashMap<String, String[]>(request.getParameterMap()); 
  params.remove(Constants.PARAM_DIGEST); 
  //4、生成无状态Token 
  StatelessToken token = new StatelessToken(username, params, clientDigest); 
  try { 
   //5、委托给Realm进行登录 
   getSubject(request, response).login(token); 
  } catch (Exception e) { 
   e.printStackTrace(); 
   onLoginFail(response); //6、登录失败 
   return false; 
  } 
  return true; 
 } 
 //登录失败时默认返回401状态码 
 private void onLoginFail(ServletResponse response) throws IOException { 
  HttpServletResponse httpResponse = (HttpServletResponse) response; 
  httpResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED); 
  httpResponse.getWriter().write("login error"); 
 } 
} 

public class StatelessToken implements AuthenticationToken { 
  private String username; 
  private Map<String, ?> params; 
  private String clientDigest; 
  //省略部分代码 
  public Object getPrincipal() { return username;} 
  public Object getCredentials() { return clientDigest;} 
}  

public class StatelessRealm extends AuthorizingRealm { 
  public boolean supports(AuthenticationToken token) { 
    //仅支持StatelessToken类型的Token 
    return token instanceof StatelessToken; 
  } 
  protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) { 
    //根据用户名查找角色，请根据需求实现 
    String username = (String) principals.getPrimaryPrincipal(); 
    SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo(); 
    authorizationInfo.addRole("admin"); 
    return authorizationInfo; 
  } 
  protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException { 
    StatelessToken statelessToken = (StatelessToken) token; 
    String username = statelessToken.getUsername(); 
    String key = getKey(username);//根据用户名获取密钥（和客户端的一样） 
    //在服务器端生成客户端参数消息摘要 
    String serverDigest = HmacSHA256Utils.digest(key, statelessToken.getParams()); 
    //然后进行客户端消息摘要和服务器端消息摘要的匹配 
    return new SimpleAuthenticationInfo( 
        username, 
        serverDigest, 
        getName()); 
  } 
   
  private String getKey(String username) {//得到密钥，此处硬编码一个 
    if("admin".equals(username)) { 
      return "dadadswdewq2ewdwqdwadsadasd"; 
    } 
    return null; 
  } 
} 

<!-- Realm实现 --> 
<bean id="statelessRealm"  
 class="com.github.zhangkaitao.shiro.chapter20.realm.StatelessRealm"> 
  <property name="cachingEnabled" value="false"/> 
</bean> 
<!-- Subject工厂 --> 
<bean id="subjectFactory"  
 class="com.github.zhangkaitao.shiro.chapter20.mgt.StatelessDefaultSubjectFactory"/> 
<!-- 会话管理器 --> 
<bean id="sessionManager" class="org.apache.shiro.session.mgt.DefaultSessionManager"> 
  <property name="sessionValidationSchedulerEnabled" value="false"/> 
</bean> 
<!-- 安全管理器 --> 
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager"> 
  <property name="realm" ref="statelessRealm"/> 
  <property name="subjectDAO.sessionStorageEvaluator.sessionStorageEnabled" 
   value="false"/> 
  <property name="subjectFactory" ref="subjectFactory"/> 
  <property name="sessionManager" ref="sessionManager"/> 
</bean> 
<!-- 相当于调用SecurityUtils.setSecurityManager(securityManager) --> 
<bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean"> 
  <property name="staticMethod"  
   value="org.apache.shiro.SecurityUtils.setSecurityManager"/> 
  <property name="arguments" ref="securityManager"/> 
</bean> 

<bean id="statelessAuthcFilter"  
  class="com.github.zhangkaitao.shiro.chapter20.filter.StatelessAuthcFilter"/> 

<!-- Shiro的Web过滤器 --> 
<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean"> 
  <property name="securityManager" ref="securityManager"/> 
  <property name="filters"> 
    <util:map> 
      <entry key="statelessAuthc" value-ref="statelessAuthcFilter"/> 
    </util:map> 
  </property> 
  <property name="filterChainDefinitions"> 
    <value> 
      /**=statelessAuthc 
    </value> 
  </property> 
</bean> 

public class ClientTest { 
  private static Server server; 
  private RestTemplate restTemplate = new RestTemplate(); 
  @BeforeClass 
  public static void beforeClass() throws Exception { 
    //创建一个server 
    server = new Server(8080); 
    WebAppContext context = new WebAppContext(); 
    String webapp = "shiro-example-chapter20/src/main/webapp"; 
    context.setDescriptor(webapp + "/WEB-INF/web.xml"); //指定web.xml配置文件 
    context.setResourceBase(webapp); //指定webapp目录 
    context.setContextPath("/"); 
    context.setParentLoaderPriority(true); 
    server.setHandler(context); 
    server.start(); 
  } 
  @AfterClass 
  public static void afterClass() throws Exception { 
    server.stop(); //当测试结束时停止服务器 
  } 
} 

@Test 
public void testServiceHelloSuccess() { 
  String username = "admin"; 
  String param11 = "param11"; 
  String param12 = "param12"; 
  String param2 = "param2"; 
  String key = "dadadswdewq2ewdwqdwadsadasd"; 
  MultiValueMap<String, String> params = new LinkedMultiValueMap<String, String>(); 
  params.add(Constants.PARAM_USERNAME, username); 
  params.add("param1", param11); 
  params.add("param1", param12); 
  params.add("param2", param2); 
  params.add(Constants.PARAM_DIGEST, HmacSHA256Utils.digest(key, params)); 
  String url = UriComponentsBuilder 
      .fromHttpUrl("http://localhost:8080/hello") 
      .queryParams(params).build().toUriString(); 
   ResponseEntity responseEntity = restTemplate.getForEntity(url, String.class); 
  Assert.assertEquals("hello" + param11 + param12 + param2, responseEntity.getBody()); 
}   

@Test 
public void testServiceHelloFail() { 
  String username = "admin"; 
  String param11 = "param11"; 
  String param12 = "param12"; 
  String param2 = "param2"; 
  String key = "dadadswdewq2ewdwqdwadsadasd"; 
  MultiValueMap<String, String> params = new LinkedMultiValueMap<String, String>(); 
  params.add(Constants.PARAM_USERNAME, username); 
  params.add("param1", param11); 
  params.add("param1", param12); 
  params.add("param2", param2); 
  params.add(Constants.PARAM_DIGEST, HmacSHA256Utils.digest(key, params)); 
  params.set("param2", param2 + "1"); 
 
  String url = UriComponentsBuilder 
      .fromHttpUrl("http://localhost:8080/hello") 
      .queryParams(params).build().toUriString(); 
  try { 
    ResponseEntity responseEntity = restTemplate.getForEntity(url, String.class); 
  } catch (HttpClientErrorException e) { 
    Assert.assertEquals(HttpStatus.UNAUTHORIZED, e.getStatusCode()); 
    Assert.assertEquals("login error", e.getResponseBodyAsString()); 
  } 
}