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小編給大家分享一下如何使用springSecurity+jwt實現互踢功能，相信大部分人都還不怎么了解，因此分享這篇文章給大家參考一下，希望大家閱讀完這篇文章后大有收獲，下面讓我們一起去了解一下吧！
JWT是一種用于雙方之間傳遞安全信息的簡潔的、URL安全的表述性聲明規范。JWT作為一個開放的標準（ RFC 7519 ），定義了一種簡潔的，自包含的方法用于通信雙方之間以Json對象的形式安全的傳遞信息。
jwt認證流程介紹：
1. 用戶使用賬號和面發出post請求；
2. 服務器使用私鑰創建一個jwt；
3. 服務器返回這個jwt給瀏覽器；
4. 瀏覽器將該jwt串在請求頭中像服務器發送請求；
5. 服務器驗證該jwt；
6. 返回響應的資源給瀏覽器。
原來的實現用戶登錄態是：
1.后臺登陸成功后生成一個令牌（uuid）----JwtAuthenticationSuccessHandler
2.后臺把它包裝成jwt數據，然后返回給前端—JwtAuthenticationSuccessHandler
3.后臺把它加入redis緩存中，并設置失效時間----JwtAuthenticationSuccessHandler
4.前端調用接口時，帶入jwt
5.后臺寫個攔截器或者過濾器，在前端調用接口的時候，從request的header中獲取jwt，在緩存中搜索，如果存在則處于登錄態，并重置失效時間（這樣用戶在有效時間內就處于登錄態）—JwtSecurityContextRepository
6.解釋下：springSecurity是個過濾器璉，是由一個一個的過濾器組成的
現在的互踢：
1.后臺在登陸成功后，用用戶id組成一個key，查詢redis緩存中的value
2.和新的jwt比較，如果不一樣則把查到的jwt當做key從redis中刪掉，就是上面第三步存儲的
3.把用戶id組成一個key，把上面jwt當做value傳入緩存中
4.在上面的第5步，也重置下我們這里存儲的值
*上面 指的是原來的實現用戶登錄態
package com.lc.gansu.security.component.jwt;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.lc.gansu.framework.core.ConstantOfReturnCode;
import com.lc.gansu.framework.core.RedisKey;
import com.lc.gansu.framework.core.ReturnObject;
import com.lc.gansu.security.component.SecurityConstants;
import com.lc.gansu.security.domain.User;
import com.lc.gansu.security.utility.JWTHS256;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.WebAttributes;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Objects;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
@Slf4j
public class JwtAuthenticationSuccessHandler implements AuthenticationSuccessHandler {
//private final RequestCache requestCache = new HttpSessionRequestCache();
private final ObjectMapper jacksonObjectMapper;
private final RedisTemplate<String, Object> redisTemplate;
public JwtAuthenticationSuccessHandler(ObjectMapper jacksonObjectMapper, RedisTemplate<String, Object> redisTemplate) {
this.jacksonObjectMapper = jacksonObjectMapper;
this.redisTemplate = redisTemplate;
}
@Override
public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException {
log.info("JwtAuthenticationSuccessHandler=success");
clearAuthenticationAttributes(request);
handle(response, authentication);
}
protected final void clearAuthenticationAttributes(HttpServletRequest request) {
HttpSession session = request.getSession(false);
if (session == null) return;
session.removeAttribute(WebAttributes.AUTHENTICATION_EXCEPTION);
}
protected void handle(HttpServletResponse response, Authentication authentication) throws IOException {
if (response.isCommitted()) {
log.debug("Response has already been committed.");
return;
}
User sysUser = (User) authentication.getPrincipal();
sysUser.setClazz(authentication.getClass());
//AuthenticationAdapter authenticationAdapter=AuthenticationAdapter.authentication2AuthenticationAdapter(authentication);
String authOfjson = jacksonObjectMapper.writeValueAsString(sysUser);
String subject = UUID.randomUUID().toString();
String authOfjwt = JWTHS256.buildJWT(subject, authOfjson);
response.addHeader("jwt", authOfjwt);
//跨域時允許header攜帶jwt
response.addHeader("Access-Control-Expose-Headers" ,"jwt");
redisTemplate.boundValueOps(SecurityConstants.getJwtKey(subject)).set("w", 60, TimeUnit.MINUTES);
//---------互踢start-------------
// 在緩存中傳入key="R_V_USERIDLOGINKEY_" + userId + "_LOGIN"，value=SecurityConstants.getJwtKey(subject),有新登錄時如果用戶一樣則把緩存里之前的jwt刪除，這個：（redisTemplate.boundValueOps(SecurityConstants.getJwtKey(subject)).set("w", 60, TimeUnit.MINUTES);）
log.info("設置jwt，并在緩存中傳入:{}",SecurityConstants.getJwtKey(subject));
String uuid = (String) redisTemplate.opsForValue().get(RedisKey.getUserIdKey(sysUser.getId()));
log.info("查詢原有jwt:{}",uuid);
if(!SecurityConstants.getJwtKey(subject).equals(uuid)&& Objects.nonNull(uuid)){
assert uuid != null;
redisTemplate.delete(uuid);
log.info("刪除原有jwt:{}",uuid);
}
redisTemplate.opsForValue().set(RedisKey.getUserIdKey(sysUser.getId()), SecurityConstants.getJwtKey(subject),60, TimeUnit.MINUTES);
log.info("在緩存里塞入新jwt:{}",SecurityConstants.getJwtKey(subject));
//---------互踢end----------------------
response.setContentType("application/json;charset=utf-8");
PrintWriter out = response.getWriter();
User returnSysUser = new User();
returnSysUser
.setName(sysUser.getName())
.setCurrentOrg(sysUser.getCurrentOrg())
.setOrgIdMapRoleList(sysUser.getOrgIdMapRoleList())
.setCurrentMenuList(sysUser.getCurrentMenuList())
.setOrgList(sysUser.getOrgList());
out.write(jacksonObjectMapper.writeValueAsString(new ReturnObject<>(this.getClass().getName(), ConstantOfReturnCode.GLOBAL_RESULT_SUCESS, "登錄成功", returnSysUser)));
out.flush();
out.close();
}
}package com.lc.gansu.security.component.jwt;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.lc.gansu.framework.core.RedisKey;
import com.lc.gansu.security.component.SecurityConstants;
import com.lc.gansu.security.domain.User;
import com.lc.gansu.security.utility.JWTHS256;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.context.HttpRequestResponseHolder;
import org.springframework.security.web.context.SecurityContextRepository;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.TimeUnit;
@Slf4j
public class JwtSecurityContextRepository implements SecurityContextRepository {
protected final Log logger = LogFactory.getLog(this.getClass());
private final RedisTemplate<String, Object> redisTemplate;
private final ObjectMapper jacksonObjectMapper;
public JwtSecurityContextRepository(RedisTemplate<String, Object> redisTemplate, ObjectMapper jacksonObjectMapper) {
this.redisTemplate = redisTemplate;
this.jacksonObjectMapper = jacksonObjectMapper;
}
@Override
public SecurityContext loadContext(HttpRequestResponseHolder requestResponseHolder) {
HttpServletRequest request = requestResponseHolder.getRequest();
return readSecurityContextFromJWT(request);
}
@Override
public void saveContext(SecurityContext context, HttpServletRequest request, HttpServletResponse response) {
}
@Override
public boolean containsContext(HttpServletRequest request) {
return false;
}
private SecurityContext readSecurityContextFromJWT(HttpServletRequest request) {
SecurityContext context = generateNewContext();
String authenticationOfjwt = request.getHeader("jwt");
if (StringUtils.isNotBlank(authenticationOfjwt)) {
try {
Map<String, Object> map = JWTHS256.vaildToken(authenticationOfjwt);
if (Objects.nonNull(map) && map.size() == 2) {
String subject = (String) map.get("subject");
Boolean isExp = redisTemplate.hasKey(SecurityConstants.getJwtKey(subject));
if (Objects.nonNull(isExp) && isExp) {//redis key 未過期
redisTemplate.expire(SecurityConstants.getJwtKey(subject), 60, TimeUnit.MINUTES);//延期
String obj = (String) map.get("claim");
//AuthenticationAdapter authenticationAdapter=jacksonObjectMapper.readValue(obj, new TypeReference<>(){});
//Authentication authentication=AuthenticationAdapter.authenticationAdapter2Authentication(authenticationAdapter);
//Authentication authentication=jacksonObjectMapper.readValue(obj, new TypeReference<>(){});
//Authentication authentication=jacksonObjectMapper.readValue(obj,Authentication.class);
User sysUser = jacksonObjectMapper.readValue(obj, new TypeReference<User>() {
});
Authentication authentication = new UsernamePasswordAuthenticationToken(sysUser, null, sysUser.getAuthorities());
context.setAuthentication(authentication);
//-----互踢start-------
if(Objects.nonNull(RedisKey.getUserIdKey(sysUser.getId()))) redisTemplate.expire(RedisKey.getUserIdKey(sysUser.getId()), 60, TimeUnit.MINUTES);
//-----互踢end---------
//if(obj instanceof Authentication){
//context.setAuthentication((Authentication)obj);
//}else log.error("jwt包含authentication的數據非法");
} else log.error("jwt數據過期");
} else log.error("jwt數據非法");
} catch (Exception e) {
e.printStackTrace();
logger.error(e.getLocalizedMessage());
}
} else {
if (logger.isDebugEnabled()) {
logger.debug("No JWT was available from the HttpServletRequestHeader!");
}
}
return context;
}
protected SecurityContext generateNewContext() {
return SecurityContextHolder.createEmptyContext();
}
}package com.lc.gansu.framework.core;
/**
* TODO
*
* @author songtianxiong
* @version 1.0
* @date 2021/11/16 19:15
*/
public class RedisKey {
//線上投放計劃反饋結果催辦
public static String getOlpmIdAndUserIdRedisKey(Long OlpmId, Long userId) {
return "R_V_OLPMURGE_" + OlpmId + "_" + userId;
}
//催辦
public static String getOdpIdAndUserIdRedisKey(Long OdpId, Long userId) {
return "R_V_ODPMURGE_" + OdpId + "_" + userId;
}
//催辦
public static String getJwtAndUrl(String jwt, String url) {
return "R_V_REPEAT_" + jwt + "_" + url;
}
//用戶登錄互踢
public static String getUserIdKey(Long userId) {
return "R_V_USERIDLOGINKEY_" + userId + "_LOGIN";
}
}---------------------------關鍵詞：互踢
關鍵代碼：
//---------互踢start-------------
// 在緩存中傳入key="R_V_USERIDLOGINKEY_" + userId + "_LOGIN"，value=SecurityConstants.getJwtKey(subject),有新登錄時如果用戶一樣則把緩存里之前的jwt刪除，這個：（redisTemplate.boundValueOps(SecurityConstants.getJwtKey(subject)).set("w", 60, TimeUnit.MINUTES);）
log.info("設置jwt，并在緩存中傳入:{}",SecurityConstants.getJwtKey(subject));
String uuid = (String) redisTemplate.opsForValue().get(RedisKey.getUserIdKey(sysUser.getId()));
log.info("查詢原有jwt:{}",uuid);
if(!SecurityConstants.getJwtKey(subject).equals(uuid)&& Objects.nonNull(uuid)){
assert uuid != null;
redisTemplate.delete(uuid);
log.info("刪除原有jwt:{}",uuid);
}
redisTemplate.opsForValue().set(RedisKey.getUserIdKey(sysUser.getId()), SecurityConstants.getJwtKey(subject),60, TimeUnit.MINUTES);
log.info("在緩存里塞入新jwt:{}",SecurityConstants.getJwtKey(subject));
//---------互踢end----------------------//-----互踢start------- if(Objects.nonNull(RedisKey.getUserIdKey(sysUser.getId()))) redisTemplate.expire(RedisKey.getUserIdKey(sysUser.getId()), 60, TimeUnit.MINUTES); //-----互踢end---------
//用戶登錄互踢
public static String getUserIdKey(Long userId) {
return "R_V_USERIDLOGINKEY_" + userId + "_LOGIN";
}以上是“如何使用springSecurity+jwt實現互踢功能”這篇文章的所有內容，感謝各位的閱讀！相信大家都有了一定的了解，希望分享的內容對大家有所幫助，如果還想學習更多知識，歡迎關注億速云行業資訊頻道！
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