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步骤1: 添加依赖
确保项目中包含了Spring Security和Sentinel-Core的相关依赖。在Maven项目中#xff0c;可以在pom.xml中添加如下依赖#xff1a;
!-- Spring Security --
dependencygroupIdorg.…基于Spring Security添加流控的过程
步骤1: 添加依赖
确保项目中包含了Spring Security和Sentinel-Core的相关依赖。在Maven项目中可以在pom.xml中添加如下依赖
!-- Spring Security --
dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-security/artifactId
/dependency!-- Sentinel-Core --
dependencygroupIdcom.alibaba.csp/groupIdartifactIdsentinel-core/artifactIdversion1.8.6/version !-- 根据最新版本调整 --
/dependency步骤2: 初始化Sentinel配置
创建一个配置类来初始化Sentinel并加载流控规则。使用Configuration注解标记此配置类并通过PostConstruct注解的方法来确保在应用启动时执行初始化逻辑。
import com.alibaba.csp.sentinel.init.InitFunc;
import com.alibaba.csp.sentinel.slots.block.flow.FlowRule;
import com.alibaba.csp.sentinel.slots.block.flow.FlowRuleManager;
import org.springframework.context.annotation.Configuration;import java.util.ArrayList;
import java.util.List;Configuration
public class SentinelConfig implements InitFunc {Overridepublic void init() throws Exception {loadFlowRules();}PostConstructpublic void loadFlowRules() {ListFlowRule rules new ArrayList();// 通用限流规则FlowRule generalRule new FlowRule(/*).setCount(100) // 一般接口的限流阈值.setGrade(FlowRule.Grade.QPS).setControlBehavior(FlowRule.ControlBehavior.DEFAULT);rules.add(generalRule);// 白名单URL的特殊流控规则假设允许较高流量FlowRule whitelistRule new FlowRule(/api/public/**).setCount(1000) // 较宽松的限流阈值.setGrade(FlowRule.Grade.QPS).setControlBehavior(FlowRule.ControlBehavior.DEFAULT);rules.add(whitelistRule);FlowRuleManager.loadRules(rules);}
}步骤3: 创建Sentinel过滤器
创建一个自定义过滤器用于在请求处理前执行Sentinel的流量控制检查。
import org.springframework.web.filter.GenericFilterBean;import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;public class SentinelSecurityFilter extends GenericFilterBean {Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)throws IOException, ServletException {HttpServletRequest request (HttpServletRequest) servletRequest;HttpServletResponse response (HttpServletResponse) servletResponse;String uri request.getRequestURI();// 使用Sentinel进行流量控制检查Entry entry null;try {entry SphU.entry(uri);filterChain.doFilter(request, response);} catch (BlockException e) {response.setStatus(HttpServletResponse.SC_TOO_MANY_REQUESTS);response.getWriter().write(Too many requests.);} finally {if (entry ! null) {entry.exit();}}}
}步骤4: 集成到Spring Security
在Spring Security的配置中注册Sentinel过滤器并配置安全规则。假设您已经有了一个Spring Security的配置类如果没有创建一个。
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.web.SecurityFilterChain;Configuration
EnableWebSecurity
public class SecurityConfig {Beanpublic SentinelSecurityFilter sentinelSecurityFilter() {return new SentinelSecurityFilter();}Beanpublic SecurityFilterChain filterChain(HttpSecurity http) throws Exception {http.csrf(csrf - csrf.disable()) // 如果不需要CSRF保护可以关闭.authorizeRequests(authz - authz.antMatchers(/api/public/**).permitAll() // 白名单URL允许匿名访问.anyRequest().authenticated() // 其他请求需要认证).addFilterBefore(sentinelSecurityFilter(), UsernamePasswordAuthenticationFilter.class) // Sentinel过滤器在JWT验证之前.formLogin(form - form.disable()) // 禁用表单登录根据需要调整.httpBasic(withDefaults()); // 或者根据需要配置HTTP Basic认证等return http.build();}
}总结
添加依赖引入Spring Security和Sentinel-Core的依赖。配置Sentinel通过Configuration类初始化Sentinel并加载流控规则。创建Sentinel过滤器自定义过滤器实现流量控制。集成Spring Security配置类中注册过滤器并定义安全策略。
按照上述步骤您可以基于Spring Security应用集成Sentinel-Core实现流量控制同时对白名单URL实施特殊处理。
