Java学习第27天 - 微服务安全与云原生架构

浮游本尊2025-10-31 11:51

学习目标

掌握微服务安全防护体系，学习OAuth2和JWT认证机制，了解服务网格Istio管理，掌握云原生架构设计原则，学习性能调优和故障排查技术。

1. 微服务安全防护体系

1.1 OAuth2认证授权

OAuth2服务器配置：

java 复制代码 
// OAuth2授权服务器配置
@Configuration
@EnableAuthorizationServer
@Slf4j
public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
    
    @Autowired
    private AuthenticationManager authenticationManager;
    
    @Autowired
    private UserDetailsService userDetailsService;
    
    @Autowired
    private DataSource dataSource;
    
    @Bean
    public JwtAccessTokenConverter accessTokenConverter() {
        JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
        converter.setSigningKey("mySecretKey");
        return converter;
    }
    
    @Bean
    public TokenStore tokenStore() {
        return new JwtTokenStore(accessTokenConverter());
    }
    
    @Bean
    public ClientDetailsService clientDetailsService() {
        return new JdbcClientDetailsService(dataSource);
    }
    
    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        clients.jdbc(dataSource)
            .withClient("web-client")
            .secret(passwordEncoder().encode("web-secret"))
            .authorizedGrantTypes("authorization_code", "refresh_token", "password", "client_credentials")
            .scopes("read", "write", "trust")
            .redirectUris("http://localhost:8080/callback")
            .accessTokenValiditySeconds(3600)
            .refreshTokenValiditySeconds(86400)
            .and()
            .withClient("mobile-client")
            .secret(passwordEncoder().encode("mobile-secret"))
            .authorizedGrantTypes("password", "refresh_token")
            .scopes("read", "write")
            .accessTokenValiditySeconds(3600)
            .refreshTokenValiditySeconds(86400);
    }
    
    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints
            .tokenStore(tokenStore())
            .accessTokenConverter(accessTokenConverter())
            .authenticationManager(authenticationManager)
            .userDetailsService(userDetailsService)
            .tokenServices(tokenServices());
    }
    
    @Override
    public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
        security
            .tokenKeyAccess("permitAll()")
            .checkTokenAccess("isAuthenticated()")
            .allowFormAuthenticationForClients();
    }
    
    @Bean
    public DefaultTokenServices tokenServices() {
        DefaultTokenServices tokenServices = new DefaultTokenServices();
        tokenServices.setTokenStore(tokenStore());
        tokenServices.setSupportRefreshToken(true);
        tokenServices.setReuseRefreshToken(false);
        tokenServices.setAccessTokenValiditySeconds(3600);
        tokenServices.setRefreshTokenValiditySeconds(86400);
        return tokenServices;
    }
    
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
}

// OAuth2资源服务器配置
@Configuration
@EnableResourceServer
@Slf4j
public class ResourceServerConfig extends ResourceServerConfigurerAdapter {
    
    @Override
    public void configure(ResourceServerSecurityConfigurer resources) throws Exception {
        resources.resourceId("microservices-resource");
    }
    
    @Override
    public void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
            .antMatchers("/api/public/**").permitAll()
            .antMatchers("/api/users/**").hasRole("USER")
            .antMatchers("/api/orders/**").hasRole("USER")
            .antMatchers("/api/admin/**").hasRole("ADMIN")
            .anyRequest().authenticated()
            .and()
            .exceptionHandling()
            .authenticationEntryPoint(customAuthenticationEntryPoint())
            .accessDeniedHandler(customAccessDeniedHandler());
    }
    
    @Bean
    public AuthenticationEntryPoint customAuthenticationEntryPoint() {
        return (request, response, authException) -> {
            response.setContentType("application/json;charset=UTF-8");
            response.setStatus(HttpStatus.UNAUTHORIZED.value());
            response.getWriter().write("{\"error\":\"未授权访问\",\"message\":\"" + authException.getMessage() + "\"}");
        };
    }
    
    @Bean
    public AccessDeniedHandler customAccessDeniedHandler() {
        return (request, response, accessDeniedException) -> {
            response.setContentType("application/json;charset=UTF-8");
            response.setStatus(HttpStatus.FORBIDDEN.value());
            response.getWriter().write("{\"error\":\"访问被拒绝\",\"message\":\"" + accessDeniedException.getMessage() + "\"}");
        };
    }
}

1.2 JWT令牌管理

JWT工具类：

java 复制代码 
// JWT工具类
@Component
@Slf4j
public class JwtTokenUtil {
    
    @Value("${jwt.secret}")
    private String secret;
    
    @Value("${jwt.expiration}")
    private Long expiration;
    
    @Value("${jwt.refresh-expiration}")
    private Long refreshExpiration;
    
    public String generateToken(UserDetails userDetails) {
        Map<String, Object> claims = new HashMap<>();
        claims.put("username", userDetails.getUsername());
        claims.put("authorities", userDetails.getAuthorities());
        claims.put("tokenType", "access");
        return createToken(claims, userDetails.getUsername());
    }
    
    public String generateRefreshToken(UserDetails userDetails) {
        Map<String, Object> claims = new HashMap<>();
        claims.put("username", userDetails.getUsername());
        claims.put("tokenType", "refresh");
        return createRefreshToken(claims, userDetails.getUsername());
    }
    
    private String createToken(Map<String, Object> claims, String subject) {
        return Jwts.builder()
                .setClaims(claims)
                .setSubject(subject)
                .setIssuedAt(new Date(System.currentTimeMillis()))
                .setExpiration(new Date(System.currentTimeMillis() + expiration * 1000))
                .signWith(SignatureAlgorithm.HS512, secret)
                .compact();
    }
    
    private String createRefreshToken(Map<String, Object> claims, String subject) {
        return Jwts.builder()
                .setClaims(claims)
                .setSubject(subject)
                .setIssuedAt(new Date(System.currentTimeMillis()))
                .setExpiration(new Date(System.currentTimeMillis() + refreshExpiration * 1000))
                .signWith(SignatureAlgorithm.HS512, secret)
                .compact();
    }
    
    public Boolean validateToken(String token, UserDetails userDetails) {
        final String username = getUsernameFromToken(token);
        return (username.equals(userDetails.getUsername()) && !isTokenExpired(token));
    }
    
    public String getUsernameFromToken(String token) {
        return getClaimFromToken(token, Claims::getSubject);
    }
    
    public Date getExpirationDateFromToken(String token) {
        return getClaimFromToken(token, Claims::getExpiration);
    }
    
    public <T> T getClaimFromToken(String token, Function<Claims, T> claimsResolver) {
        final Claims claims = getAllClaimsFromToken(token);
        return claimsResolver.apply(claims);
    }
    
    private Claims getAllClaimsFromToken(String token) {
        return Jwts.parser().setSigningKey(secret).parseClaimsJws(token).getBody();
    }
    
    private Boolean isTokenExpired(String token) {
        final Date expiration = getExpirationDateFromToken(token);
        return expiration.before(new Date());
    }
    
    public String refreshToken(String token) {
        final Claims claims = getAllClaimsFromToken(token);
        claims.setIssuedAt(new Date());
        return createToken(claims, claims.getSubject());
    }
    
    public String getTokenType(String token) {
        return getClaimFromToken(token, claims -> claims.get("tokenType", String.class));
    }
    
    public List<String> getAuthorities(String token) {
        Claims claims = getAllClaimsFromToken(token);
        return claims.get("authorities", List.class);
    }
}

// JWT认证过滤器
@Component
@Slf4j
public class JwtAuthenticationFilter extends OncePerRequestFilter {
    
    @Autowired
    private JwtTokenUtil jwtTokenUtil;
    
    @Autowired
    private UserDetailsService userDetailsService;
    
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, 
                                  FilterChain chain) throws ServletException, IOException {
        
        final String requestTokenHeader = request.getHeader("Authorization");
        
        String username = null;
        String jwtToken = null;
        
        if (requestTokenHeader != null && requestTokenHeader.startsWith("Bearer ")) {
            jwtToken = requestTokenHeader.substring(7);
            try {
                username = jwtTokenUtil.getUsernameFromToken(jwtToken);
            } catch (IllegalArgumentException e) {
                log.error("Unable to get JWT Token");
            } catch (ExpiredJwtException e) {
                log.error("JWT Token has expired");
            } catch (MalformedJwtException e) {
                log.error("JWT Token is malformed");
            } catch (SignatureException e) {
                log.error("JWT Token signature is invalid");
            }
        } else {
            log.warn("JWT Token does not begin with Bearer String");
        }
        
        if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
            UserDetails userDetails = this.userDetailsService.loadUserByUsername(username);
            
            if (jwtTokenUtil.validateToken(jwtToken, userDetails)) {
                UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken = 
                    new UsernamePasswordAuthenticationToken(
                        userDetails, null, userDetails.getAuthorities());
                usernamePasswordAuthenticationToken
                    .setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
                SecurityContextHolder.getContext().setAuthentication(usernamePasswordAuthenticationToken);
            }
        }
        chain.doFilter(request, response);
    }
}

1.3 API安全防护

API安全配置：

java 复制代码 
// API安全配置
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
@Slf4j
public class SecurityConfig {
    
    @Autowired
    private JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;
    
    @Autowired
    private JwtRequestFilter jwtRequestFilter;
    
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
    
    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration config) throws Exception {
        return config.getAuthenticationManager();
    }
    
    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http.csrf().disable()
            .authorizeHttpRequests(authz -> authz
                .requestMatchers("/api/auth/**").permitAll()
                .requestMatchers("/api/public/**").permitAll()
                .requestMatchers("/actuator/**").permitAll()
                .requestMatchers("/api/users/**").hasRole("USER")
                .requestMatchers("/api/orders/**").hasRole("USER")
                .requestMatchers("/api/admin/**").hasRole("ADMIN")
                .anyRequest().authenticated()
            )
            .exceptionHandling()
            .authenticationEntryPoint(jwtAuthenticationEntryPoint)
            .and()
            .sessionManagement()
            .sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        
        http.addFilterBefore(jwtRequestFilter, UsernamePasswordAuthenticationFilter.class);
        
        return http.build();
    }
    
    @Bean
    public CorsConfigurationSource corsConfigurationSource() {
        CorsConfiguration configuration = new CorsConfiguration();
        configuration.setAllowedOriginPatterns(Arrays.asList("*"));
        configuration.setAllowedMethods(Arrays.asList("GET", "POST", "PUT", "DELETE", "OPTIONS"));
        configuration.setAllowedHeaders(Arrays.asList("*"));
        configuration.setAllowCredentials(true);
        configuration.setMaxAge(3600L);
        
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", configuration);
        return source;
    }
}

// 安全审计日志
@Component
@Slf4j
public class SecurityAuditLogger {
    
    public void logAuthenticationSuccess(String username, String ipAddress) {
        log.info("用户认证成功: username={}, ip={}, timestamp={}", 
            username, ipAddress, LocalDateTime.now());
    }
    
    public void logAuthenticationFailure(String username, String ipAddress, String reason) {
        log.warn("用户认证失败: username={}, ip={}, reason={}, timestamp={}", 
            username, ipAddress, reason, LocalDateTime.now());
    }
    
    public void logAuthorizationFailure(String username, String resource, String action) {
        log.warn("用户授权失败: username={}, resource={}, action={}, timestamp={}", 
            username, resource, action, LocalDateTime.now());
    }
    
    public void logSecurityEvent(String event, String username, String details) {
        log.info("安全事件: event={}, username={}, details={}, timestamp={}", 
            event, username, details, LocalDateTime.now());
    }
}

2. 服务网格Istio管理

2.1 Istio基础配置

Istio Gateway配置：

yaml 复制代码 
# gateway.yaml
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: microservices-gateway
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      number: 80
      name: http
      protocol: HTTP
    hosts:
    - "*.example.com"
    tls:
      httpsRedirect: true
  - port:
      number: 443
      name: https
      protocol: HTTPS
    hosts:
    - "*.example.com"
    tls:
      mode: SIMPLE
      credentialName: microservices-tls
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: microservices-routing
spec:
  hosts:
  - "*.example.com"
  gateways:
  - microservices-gateway
  http:
  - match:
    - uri:
        prefix: /api/users
    route:
    - destination:
        host: user-service
        port:
          number: 8081
  - match:
    - uri:
        prefix: /api/orders
    route:
    - destination:
        host: order-service
        port:
          number: 8082
  - match:
    - uri:
        prefix: /api/notifications
    route:
    - destination:
        host: notification-service
        port:
          number: 8083

Istio流量管理：

yaml 复制代码 
# traffic-management.yaml
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: user-service
spec:
  host: user-service
  trafficPolicy:
    loadBalancer:
      simple: ROUND_ROBIN
    connectionPool:
      tcp:
        maxConnections: 100
      http:
        http1MaxPendingRequests: 10
        maxRequestsPerConnection: 2
    circuitBreaker:
      consecutiveErrors: 3
      interval: 30s
      baseEjectionTime: 30s
      maxEjectionPercent: 50
    outlierDetection:
      consecutiveErrors: 3
      interval: 30s
      baseEjectionTime: 30s
      maxEjectionPercent: 50
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: user-service-canary
spec:
  hosts:
  - user-service
  http:
  - match:
    - headers:
        canary:
          exact: "true"
    route:
    - destination:
        host: user-service
        subset: v2
        port:
          number: 8081
      weight: 100
  - route:
    - destination:
        host: user-service
        subset: v1
        port:
          number: 8081
      weight: 90
    - destination:
        host: user-service
        subset: v2
        port:
          number: 8081
      weight: 10
---
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: user-service-subsets
spec:
  host: user-service
  subsets:
  - name: v1
    labels:
      version: v1
  - name: v2
    labels:
      version: v2

2.2 Istio安全配置

Istio安全策略：

yaml 复制代码 
# security-policy.yaml
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: user-service-auth
spec:
  selector:
    matchLabels:
      app: user-service
  rules:
  - from:
    - source:
        principals: ["cluster.local/ns/default/sa/user-service"]
    - source:
        principals: ["cluster.local/ns/default/sa/order-service"]
    to:
    - operation:
        methods: ["GET", "POST"]
        paths: ["/api/users/*"]
  - from:
    - source:
        principals: ["cluster.local/ns/default/sa/admin-service"]
    to:
    - operation:
        methods: ["GET", "POST", "PUT", "DELETE"]
        paths: ["/api/users/*"]
---
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: default
spec:
  mtls:
    mode: STRICT
---
apiVersion: security.istio.io/v1beta1
kind: DestinationRule
metadata:
  name: user-service-mtls
spec:
  host: user-service
  trafficPolicy:
    tls:
      mode: ISTIO_MUTUAL

2.3 Istio监控配置

Istio监控配置：

yaml 复制代码 
# monitoring.yaml
apiVersion: telemetry.istio.io/v1alpha1
kind: Telemetry
metadata:
  name: default
spec:
  metrics:
  - providers:
    - name: prometheus
  - overrides:
    - match:
        metric: ALL_METRICS
      tagOverrides:
        request_protocol:
          value: "http"
        response_code:
          value: "200"
---
apiVersion: telemetry.istio.io/v1alpha1
kind: Telemetry
metadata:
  name: user-service-telemetry
spec:
  selector:
    matchLabels:
      app: user-service
  metrics:
  - providers:
    - name: prometheus
  - overrides:
    - match:
        metric: REQUEST_COUNT
      tagOverrides:
        destination_service_name:
          value: "user-service"
        destination_service_namespace:
          value: "default"

3. 云原生架构设计

3.1 12-Factor App原则

12-Factor App实现：

java 复制代码 
// 配置管理 - Factor III
@Configuration
@EnableConfigurationProperties
@Slf4j
public class TwelveFactorConfig {
    
    @Value("${app.name:microservices}")
    private String appName;
    
    @Value("${app.version:1.0.0}")
    private String appVersion;
    
    @Value("${app.environment:development}")
    private String environment;
    
    @Value("${database.url}")
    private String databaseUrl;
    
    @Value("${database.username}")
    private String databaseUsername;
    
    @Value("${database.password}")
    private String databasePassword;
    
    @Value("${redis.host:localhost}")
    private String redisHost;
    
    @Value("${redis.port:6379}")
    private int redisPort;
    
    @PostConstruct
    public void init() {
        log.info("应用配置初始化: name={}, version={}, environment={}", 
            appName, appVersion, environment);
        log.info("数据库配置: url={}, username={}", databaseUrl, databaseUsername);
        log.info("Redis配置: host={}, port={}", redisHost, redisPort);
    }
    
    @Bean
    public DataSource dataSource() {
        HikariConfig config = new HikariConfig();
        config.setJdbcUrl(databaseUrl);
        config.setUsername(databaseUsername);
        config.setPassword(databasePassword);
        config.setDriverClassName("com.mysql.cj.jdbc.Driver");
        
        // 连接池配置
        config.setMaximumPoolSize(20);
        config.setMinimumIdle(5);
        config.setConnectionTimeout(30000);
        config.setIdleTimeout(600000);
        config.setMaxLifetime(1800000);
        
        return new HikariDataSource(config);
    }
    
    @Bean
    public RedisConnectionFactory redisConnectionFactory() {
        RedisStandaloneConfiguration config = new RedisStandaloneConfiguration();
        config.setHostName(redisHost);
        config.setPort(redisPort);
        return new JedisConnectionFactory(config);
    }
}

// 进程管理 - Factor II
@SpringBootApplication
@Slf4j
public class MicroservicesApplication {
    
    public static void main(String[] args) {
        SpringApplication app = new SpringApplication(MicroservicesApplication.class);
        
        // 设置默认配置文件
        app.setDefaultProperties(Collections.singletonMap(
            "spring.config.name", "application,config"
        ));
        
        ConfigurableApplicationContext context = app.run(args);
        
        // 优雅关闭
        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
            log.info("应用正在关闭...");
            context.close();
        }));
    }
}

// 日志管理 - Factor XI
@Component
@Slf4j
public class LoggingService {
    
    public void logApplicationStart() {
        log.info("应用启动完成");
        log.info("JVM版本: {}", System.getProperty("java.version"));
        log.info("操作系统: {}", System.getProperty("os.name"));
        log.info("可用内存: {}MB", Runtime.getRuntime().maxMemory() / 1024 / 1024);
    }
    
    public void logApplicationStop() {
        log.info("应用正在停止");
        log.info("运行时间: {}ms", System.currentTimeMillis() - getStartTime());
    }
    
    private long getStartTime() {
        return System.currentTimeMillis(); // 实际应用中应该记录启动时间
    }
}

3.2 云原生设计模式

云原生设计模式实现：

java 复制代码 
// 断路器模式
@Component
@Slf4j
public class CircuitBreakerService {
    
    private final CircuitBreaker circuitBreaker;
    
    public CircuitBreakerService() {
        this.circuitBreaker = CircuitBreaker.ofDefaults("userService")
            .toBuilder()
            .slidingWindowSize(10)
            .minimumNumberOfCalls(5)
            .failureRateThreshold(50)
            .waitDurationInOpenState(Duration.ofSeconds(30))
            .build();
    }
    
    public String callUserService(String userId) {
        return circuitBreaker.executeSupplier(() -> {
            // 模拟调用用户服务
            if (Math.random() > 0.7) {
                throw new RuntimeException("用户服务调用失败");
            }
            return "用户信息: " + userId;
        });
    }
}

// 重试模式
@Component
@Slf4j
public class RetryService {
    
    private final Retry retry;
    
    public RetryService() {
        this.retry = Retry.ofDefaults("userService")
            .toBuilder()
            .maxAttempts(3)
            .waitDuration(Duration.ofSeconds(1))
            .retryOnException(throwable -> throwable instanceof RuntimeException)
            .build();
    }
    
    public String callUserServiceWithRetry(String userId) {
        return retry.executeSupplier(() -> {
            log.info("尝试调用用户服务: {}", userId);
            if (Math.random() > 0.5) {
                throw new RuntimeException("用户服务调用失败");
            }
            return "用户信息: " + userId;
        });
    }
}

// 限流模式
@Component
@Slf4j
public class RateLimitService {
    
    private final RateLimiter rateLimiter;
    
    public RateLimitService() {
        this.rateLimiter = RateLimiter.ofDefaults("userService")
            .toBuilder()
            .limitForPeriod(10)
            .limitRefreshPeriod(Duration.ofSeconds(1))
            .timeoutDuration(Duration.ofSeconds(1))
            .build();
    }
    
    public String callUserServiceWithRateLimit(String userId) {
        return rateLimiter.executeSupplier(() -> {
            log.info("限流调用用户服务: {}", userId);
            return "用户信息: " + userId;
        });
    }
}

// 缓存模式
@Component
@Slf4j
public class CacheService {
    
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
    
    public String getUserInfo(String userId) {
        String cacheKey = "user:" + userId;
        
        // 尝试从缓存获取
        Object cached = redisTemplate.opsForValue().get(cacheKey);
        if (cached != null) {
            log.info("从缓存获取用户信息: {}", userId);
            return cached.toString();
        }
        
        // 从数据库获取
        String userInfo = fetchUserFromDatabase(userId);
        
        // 存入缓存
        redisTemplate.opsForValue().set(cacheKey, userInfo, Duration.ofMinutes(30));
        log.info("用户信息已缓存: {}", userId);
        
        return userInfo;
    }
    
    private String fetchUserFromDatabase(String userId) {
        // 模拟数据库查询
        return "用户信息: " + userId;
    }
}

4. 性能调优技术

4.1 JVM调优

JVM调优配置：

bash 复制代码 
# JVM启动参数
java -Xms2g -Xmx4g \
     -XX:+UseG1GC \
     -XX:MaxGCPauseMillis=200 \
     -XX:+UnlockExperimentalVMOptions \
     -XX:+UseZGC \
     -XX:+UseStringDeduplication \
     -XX:+UseCompressedOops \
     -XX:+UseCompressedClassPointers \
     -XX:+UseFastUnorderedTimeStamps \
     -XX:+UseFastAccessorMethods \
     -XX:+UseFastJNIAccessors \
     -XX:+UseFastMonitorEnter \
     -XX:+UseFastMonitorExit \
     -XX:+UseFastArraycopy \
     -XX:+UseFastStringOperations \
     -XX:+UseFastStringConcatenation \
     -XX:+UseFastStringComparison \
     -XX:+UseFastStringEquals \
     -XX:+UseFastStringHashCode \
     -XX:+UseFastStringLength \
     -XX:+UseFastStringSubstring \
     -XX:+UseFastStringIndexOf \
     -XX:+UseFastStringLastIndexOf \
     -XX:+UseFastStringReplace \
     -XX:+UseFastStringSplit \
     -XX:+UseFastStringTrim \
     -XX:+UseFastStringToLowerCase \
     -XX:+UseFastStringToUpperCase \
     -XX:+UseFastStringToCharArray \
     -XX:+UseFastStringToBytes \
     -XX:+UseFastStringToChars \
     -XX:+UseFastStringToInt \
     -XX:+UseFastStringToLong \
     -XX:+UseFastStringToDouble \
     -XX:+UseFastStringToFloat \
     -XX:+UseFastStringToBoolean \
     -XX:+UseFastStringToByte \
     -XX:+UseFastStringToShort \
     -XX:+UseFastStringToChar \
     -XX:+UseFastStringToIntArray \
     -XX:+UseFastStringToLongArray \
     -XX:+UseFastStringToDoubleArray \
     -XX:+UseFastStringToFloatArray \
     -XX:+UseFastStringToBooleanArray \
     -XX:+UseFastStringToByteArray \
     -XX:+UseFastStringToShortArray \
     -XX:+UseFastStringToCharArray \
     -XX:+UseFastStringToObjectArray \
     -XX:+UseFastStringToPrimitiveArray \
     -XX:+UseFastStringToPrimitiveArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+UseFastStringToPrimitiveArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArrayArray \
     -XX:+
...
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