springcloud gateway从数据库中读取路由配置代码工具类
时间: 2023-12-20 16:53:17 浏览: 29
以下是一个基本的工具类,用于将路由配置从数据库中读取并转换为Spring Cloud Gateway的路由定义:
```java
@Component
public class DatabaseRouteDefinitionProvider implements RouteDefinitionProvider {
private final JdbcTemplate jdbcTemplate;
public DatabaseRouteDefinitionProvider(JdbcTemplate jdbcTemplate) {
this.jdbcTemplate = jdbcTemplate;
}
@Override
public Flux<RouteDefinition> getRouteDefinitions() {
List<RouteDefinition> definitions = jdbcTemplate.query("SELECT * FROM routes", rs -> {
List<RouteDefinition> routes = new ArrayList<>();
while (rs.next()) {
RouteDefinition route = new RouteDefinition();
route.setId(rs.getString("id"));
route.setUri(URI.create(rs.getString("uri")));
route.setOrder(rs.getInt("route_order"));
String predicatesJson = rs.getString("predicates");
List<PredicateDefinition> predicates = new ObjectMapper().readValue(predicatesJson, new TypeReference<List<PredicateDefinition>>() {});
route.setPredicates(predicates);
String filtersJson = rs.getString("filters");
List<FilterDefinition> filters = new ObjectMapper().readValue(filtersJson, new TypeReference<List<FilterDefinition>>() {});
route.setFilters(filters);
routes.add(route);
}
return routes;
});
return Flux.fromIterable(definitions);
}
}
```
这个工具类使用Spring JDBC来查询数据库中的路由配置,并使用Jackson库将JSON字符串转换为Spring Cloud Gateway的路由定义对象。然后,它将这些定义添加到一个Flux对象中,并返回它以供Spring Cloud Gateway使用。请注意,此工具类仅提供了一种从数据库中读取路由配置的方法,您可以根据需要进行修改以适应您的应用程序。