Java 从数据库加载netflix zuul路由值
我正在学习api网关技术Java 从数据库加载netflix zuul路由值,java,spring,netflix-zuul,spring-cloud-netflix,api-gateway,Java,Spring,Netflix Zuul,Spring Cloud Netflix,Api Gateway,我正在学习api网关技术netflix zuul。我把所有的事情都安排好了,并且能够使用zuulproxy-url路由我的api。下面是我的代码: 主类 package com.example.springbootzuulgatwayproxy; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; impor
netflix zuul
。我把所有的事情都安排好了,并且能够使用zuul
proxy-url路由我的api。下面是我的代码:
主类
package com.example.springbootzuulgatwayproxy;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.context.annotation.Bean;
import com.example.springbootzuulgatwayproxy.filters.ErrorFilter;
import com.example.springbootzuulgatwayproxy.filters.PostFilter;
import com.example.springbootzuulgatwayproxy.filters.PreFilter;
import com.example.springbootzuulgatwayproxy.filters.RouteFilter;
@SpringBootApplication
@EnableZuulProxy
public class SpringBootZuulgatwayproxyApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootZuulgatwayproxyApplication.class, args);
}
@Bean
public PreFilter preFilter() {
return new PreFilter();
}
@Bean
public PostFilter postFilter() {
return new PostFilter();
}
@Bean
public ErrorFilter errorFilter() {
return new ErrorFilter();
}
@Bean
public RouteFilter routeFilter() {
return new RouteFilter();
}
}
zuul.routes.employee.url=http://localhost:8090
zuul.routes.employee2.url=http://localhost:8090
server.port=8080
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>spring-boot-zuulgatwayproxy</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>spring-boot-zuulgatwayproxy</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Dalston.SR2</spring-cloud.version>
</properties>
<dependencies>
<!-- <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka</artifactId>
</dependency> -->
<!-- <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId>
</dependency> -->
<dependency>
<groupId>commons-configuration</groupId>
<artifactId>commons-configuration</artifactId>
<version>1.9</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zuul</artifactId>
</dependency>
<!-- <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-rest</artifactId>
</dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
然后有4个过滤器类(Pre、Route、Post和Error),它们都扩展了zuumfilter
class
一切正常。但现在的要求是,必须从数据库加载
application.properties
文件中的所有zuul.routes.[entity].url
字段及其url
值。我怎样才能达到这个要求。请给我一些建议。我已尝试使用类似的密钥预填充/更新application.properties文件。能够更新/写入application.properties文件,但实际效果不会在运行时发生。如何设置属性文件中定义的路由键以从mysql数据库动态加载。在应用程序中更新路由。属性不会自动触发ZuulProperties
bean重新加载。无论路由存储在何处,您都需要一个类似以下内容的bean:
@初级的
@Bean(name=“zuulConfigProperties”)
@刷新范围
@配置属性(“zuul”)
公共ZuulProperties ZuulProperties(){
...
}
更新以包括路由配置:
zuul:
ignoredServices: "*"
routes:
zuulDemo1:
path: /zuul2/**
serviceId: demo-zuul-api1
# stripPrefix set to true if context path is set to /
stripPrefix: true
这在我写的一篇博文中有介绍,尽管它不在DB中存储路由,而是存储在一个由Bitbucket
支持的文件中,该文件有一个WebHook,它向Zuul
服务器发送post请求,然后服务器将消息发布到代理(RabbitMQ
)订阅者可以获得变更集。如果您想在数据库中存储路由值,可以查看此博客
数据库结构
CREATE TABLE `sys_zuul_route` (
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT 'router Id',
`path` varchar(255) NOT NULL COMMENT 'Routing path',
`service_id` varchar(255) NOT NULL COMMENT 'Service name',
`url` varchar(255) DEFAULT NULL COMMENT 'url agent',
`strip_prefix` char(1) DEFAULT '1' COMMENT 'Forward without prefix',
`retryable` char(1) DEFAULT '1' COMMENT 'Do you want to retry?',
`enabled` char(1) DEFAULT '1' COMMENT 'Is it enabled?',
`sensitiveHeaders_list` varchar(255) DEFAULT NULL COMMENT 'Sensitive request header',
`create_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Creation time',
`update_time` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP COMMENT 'Update time',
`del_flag` char(1) DEFAULT '0' COMMENT 'Remove identity (0-normal,1-Delete)',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC COMMENT='Dynamic routing configuration table'
很抱歉,我无法理解您的体系结构,您正在使用第三方配置@ConfigurationProperties(“zuul”)
方法zuulProperties()
。但是我想知道,在这个返回ZuulProperties
的特殊方法中,如何加载这些属性(类似于上面提到的application.properties
)。我可以使用路由过滤器
做些什么吗?你也可以用Map
代替db