Add serverSettings API to public

only save LOWCODER_* env variables to DB

Author: th37rose

server/api-service/lowcoder-domain/src/main/java/org/lowcoder/domain/serversetting/service/ServerSettingServiceImpl.java

@@ -47,6 +47,7 @@ public Flux<ServerSetting> findAll() {
     public void saveEnvironmentVariables() {
         Map<String, String> envVariables = System.getenv();
         Flux.fromIterable(envVariables.keySet())
+                .filter(key -> key.contains("LOWCODER_"))
                 .map(key -> {
                     String value = envVariables.getOrDefault(key, "");
                     if(EXCLUDED_KEYS.contains(key)) {

server/api-service/lowcoder-server/src/main/java/org/lowcoder/api/framework/security/SecurityConfig.java

@@ -89,6 +89,7 @@ SecurityWebFilterChain securityWebFilterChain(ServerHttpSecurity http) {
                         ServerWebExchangeMatchers.pathMatchers(HttpMethod.HEAD, STATE_URL + "/healthCheck"),
                         // used in public viewed apps
                         ServerWebExchangeMatchers.pathMatchers(HttpMethod.GET, CONFIG_URL), // system config
+                        ServerWebExchangeMatchers.pathMatchers(HttpMethod.GET, SERVER_SETTING_URL), // system env
                         ServerWebExchangeMatchers.pathMatchers(HttpMethod.GET, CONFIG_URL + "/deploymentId"), // system config
                         ServerWebExchangeMatchers.pathMatchers(HttpMethod.GET, APPLICATION_URL + "/*/view"), // application view
                         ServerWebExchangeMatchers.pathMatchers(HttpMethod.GET, APPLICATION_URL + "/*/view_marketplace"), // application view