2536-springsecurity系列--关于session管理1
版本信息
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.14.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>1.5.14.RELEASE</version>
<!--实际里面spring-security-web的版本是4.2.7-->
</dependency>
在ss中基本的session管理
- session无效处理
- session过期处理
- 并发登录处理
- 限制同一用户重复登录和顶号
// 配置session相关
// CustomSecurityProperties是自定义的常量参数类
private void configSession(HttpSecurity http) throws Exception {
http.sessionManagement()
.invalidSessionStrategy(invalidSessionStrategy) //session无效处理策略
.invalidSessionUrl(CustomSecurityProperties.invalidSessionUrl)
.maximumSessions(1) //同一用户最大session数
.maxSessionsPreventsLogin(false) //达到最大数禁止登录（预防并发登录）
.expiredSessionStrategy(sessionInformationExpiredStrategy) //session过期处理策略
.expiredUrl(CustomSecurityProperties.expiredSessionUrl);
}
并发登录处理
例如用户在两台电脑上登录，并在两台电脑上办公，可设置maximumSessions值为2，这样springsecurity在管理session时会对该用户保持两个有效的session。
限制同一用户重复登录和顶号
例如要求用户最多只能在一台电脑上登录，并且另一台电脑登录会顶掉之前的登录信息。
maximumSessions设置为1
maxSessionsPreventsLogin设置为false
例如要求用户最多只能在一台电脑上登录，并且另一台电脑登录会提示不可重复登录。
maximumSessions设置为1
maxSessionsPreventsLogin设置为true
session无效处理和session过期处理
简单的处理，只是进行url跳转，配置invalidSessionUrl和expiredUrl两个参数即可。
如果需要记录session无效或过期时的用户信息、日志等，需要自定义实现类InvalidSessionStrategy和SessionInformationExpiredStrategy
自定义处理
自定义三个类
AbstractSessionStrategy
CustomExpiredSessionStrategy
CustomInvalidSessionStrategy
在config类中进行配置
/**
* 配置sec的session失效策略
* 配置给sessionManagement
*/
@Bean
@ConditionalOnMissingBean(InvalidSessionStrategy.class)
public InvalidSessionStrategy invalidSessionStrategy() {
return new CustomInvalidSessionStrategy(CustomSecurityProperties.invalidSessionUrl);
}
/**
* 配置sec的session过期策略
* 配置给sessionManagement
*/
@Bean
@ConditionalOnMissingBean(SessionInformationExpiredStrategy.class)
public SessionInformationExpiredStrategy sessionInformationExpiredStrategy() {
return new CustomExpiredSessionStrategy(CustomSecurityProperties.invalidSessionUrl);
}
三个实现类的代码：
AbstractSessionStrategy
import com.company.testss12.support.RetVO;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.util.UrlUtils;
import org.springframework.util.Assert;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* @author starmoon1994
*/
public class AbstractSessionStrategy {
private final Logger logger = LoggerFactory.getLogger(getClass());
/**
* 跳转的url
*/
private String destinationUrl;
/**
* 重定向策略
*/
private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
/**
* 跳转前是否创建新的session
*/
private boolean createNewSession = true;
private ObjectMapper objectMapper = new ObjectMapper();
/**
*/
public AbstractSessionStrategy(String invalidSessionUrl) {
Assert.isTrue(UrlUtils.isValidRedirectUrl(invalidSessionUrl), "url must start with '/' or with 'http(s)'");
this.destinationUrl = invalidSessionUrl;
}
protected void onSessionInvalid(HttpServletRequest request, HttpServletResponse response) throws IOException {
logger.info("onSessionInvalid IP:{} URI:{}", request.getRemoteHost(), request.getRequestURI());
if (createNewSession) {
request.getSession();
}
String sourceUrl = request.getRequestURI();
String targetUrl;
if (StringUtils.endsWithIgnoreCase(sourceUrl, ".html")) {
targetUrl = destinationUrl;//+".html";
logger.info("session失效,跳转到" + targetUrl);
redirectStrategy.sendRedirect(request, response, targetUrl);
} else {
String message = "session已失效，请重新登录";
if (isConcurrency()) {
message = message + "，有可能是并发登录导致的";
}
response.setStatus(HttpStatus.UNAUTHORIZED.value());
response.setContentType("application/json;charset=UTF-8");
RetVO retVO = new RetVO();
retVO.setMsg(message);
response.getWriter().write(objectMapper.writeValueAsString(retVO));
}
}
/**
* session失效是否是并发导致的
*/
protected boolean isConcurrency() {
return false;
}
/**
* Determines whether a new session should be created before redirecting (to
* avoid possible looping issues where the same session ID is sent with the
* redirected request). Alternatively, ensure that the configured URL does
* not pass through the {@code SessionManagementFilter}.
*
* @param createNewSession defaults to {@code true}.
*/
public void setCreateNewSession(boolean createNewSession) {
this.createNewSession = createNewSession;
}
}
CustomExpiredSessionStrategy
import org.springframework.security.web.session.SessionInformationExpiredEvent;
import org.springframework.security.web.session.SessionInformationExpiredStrategy;
import java.io.IOException;
/**
* session失效策略
*/
public class CustomExpiredSessionStrategy extends AbstractSessionStrategy implements SessionInformationExpiredStrategy {
public CustomExpiredSessionStrategy(String invalidSessionUrl) {
super(invalidSessionUrl);
}
@Override
public void onExpiredSessionDetected(SessionInformationExpiredEvent event) throws IOException {
onSessionInvalid(event.getRequest(), event.getResponse());
}
@Override
protected boolean isConcurrency() {
return true;
}
}
CustomInvalidSessionStrategy
import org.springframework.security.web.session.InvalidSessionStrategy;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* @author starmoon1994
*/
public class CustomInvalidSessionStrategy extends AbstractSessionStrategy implements InvalidSessionStrategy {
public CustomInvalidSessionStrategy(String invalidSessionUrl) {
super(invalidSessionUrl);
}
@Override
public void onInvalidSessionDetected(HttpServletRequest request, HttpServletResponse response)
throws IOException {
onSessionInvalid(request, response);
}
}
