• Monthly Archives: 8月 2020

3D打印机RAMPS1.4关于4988驱动板的细分设置

ramps上对应每个4988驱动都有ms1,ms2,ms3三个短路块来调节细分(需要取下4988板子才可以看到),
ms1 | ms2 | ms3
no | no | no |全细分
yes | no | no |1/2(2细分)
no | yes | no | 1/4 (4细分)
yes | yes | no |1/8(8细分)
yes | yes | yes | 1/16(16细分)

 

常用电机行走1mm需要的脉冲数:

1.8度,16细分,16齿,100
1.8度,16细分,20齿,80
1.8度,32细分,16齿,200
1.8度,16细分,20齿,160

0.9度,16细分,16齿,200
0.9度,16细分,20齿,160
0.9度,32细分,16齿,400
0.9度,32细分,20齿,320

 

如果觉得计算麻烦也可以使用官方的计算器:

https://blog.prusaprinters.org/calculator_3416/

123

SpringBoot2.1.1使用Zuul创建SpringCloud微服务Gateway网关

1、在新的SpringBoot项目中的pom.xml引入如下依赖:

		<!-- 引入Zuul starter -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter</artifactId>
		</dependency>
		<!-- 连接Eureka -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>

2、在pom.xml的project中加入SpringCloud的版本管理配置:

	<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>

3、编辑配置文件application.propertites:

spring.application.name = zero4j-zuul-gateway

eureka.client.serviceUrl.defaultZone = http://admin:123456@localhost:8761/eureka/
eureka.instance.instance-id = ${spring.cloud.client.ip-address}:${spring.application.name}:${server.port}
eureka.instance.prefer-ip-address = true

#只要访问以/api/v1/areas开头的多层目录都可以路由到服务名为zero4j-provider-area的服务上.
zuul.routes.zero4j-provider-area.path = /api/v1/areas
zuul.routes.zero4j-provider-area.service-id = zero4j-provider-area
zuul.routes.zero4j-provider-area.stripPrefix = false

server.port = 4000

4、最后在application启动类中加入@EnableDiscoveryClient和@EnableZuulProxy注解:

package com.zero4j;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;

@EnableDiscoveryClient
@EnableZuulProxy
@SpringBootApplication
public class Zero4jZuulGatewayApplication {

	public static void main(String[] args) {
		SpringApplication.run(Zero4jZuulGatewayApplication.class, args);
	}

}

 

SpringBoot2.1.1微服务架构引入SpringCloudSecurity安全认证

1、在eureka服务器的pom.xml中引入依赖:

	<!-- Spring Cloud Security 依赖 -->
	<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

2、创建密码安全认证密码匹配规则类MyPasswordEncoder.java:

package com.zero4j.config;

import org.springframework.security.crypto.password.PasswordEncoder;

public class MyPasswordEncoder implements PasswordEncoder {

	@Override
    public String encode(CharSequence charSequence) {
        return charSequence.toString();
    }

    @Override
    public boolean matches(CharSequence charSequence, String s) {
        return s.equals(charSequence.toString());
    }
    
}

3、在eureka服务器中创建配置类SecurityConfig.java:

package com.zero4j.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.factory.PasswordEncoderFactories;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    
	@Bean
    public PasswordEncoder passwordEncoder() {
        return PasswordEncoderFactories.createDelegatingPasswordEncoder();
    }
    
    //@Autowired
    //BCryptPasswordEncoder passwordEncoder;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    	
    	//以前可以不指定PasswordEncoder,但是新的SpringBoot依赖的SpringCloudScurity需要了
    	//auth.inMemoryAuthentication().withUser("admin").password("123456").roles("ADMIN");
    	//这样,密码以明文的方式进行匹配
    	auth.inMemoryAuthentication().passwordEncoder(new MyPasswordEncoder()).withUser("admin").password("123456").roles("ADMIN");
    	//auth.inMemoryAuthentication().withUser("admin").password(passwordEncoder.encode("123456")).roles("ADMIN");
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().ignoringAntMatchers("/eureka/**");
        super.configure(http);
    }
}

4、启动服务,访问eureka服务中心,使用admin:123456进行登录,成功进入eureka控制台

5、对微服务提供者的application.propertites说引用的eureka服务中心地址的前面加入“admin:123456@”,如:http\://admin:123456@localhost\:8761/eureka/ ,然后启动即可~

SpringBoot2.1.1使用SpringCloud的Feign调用Eureka微服务并开启Hystrix熔断机制

1、先在pom.xml中引入如下依赖:

	<!--Netflix Eureka依赖-->
	<dependency>
		<groupId>org.springframework.cloud</groupId>
		<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
	</dependency>
	<dependency>
		<groupId>org.springframework.cloud</groupId>
		<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
	</dependency>
	<!--springcloud整合的openFeign-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

2、在pom.xml中的<project></project>之间增加以下关于springcloud的版本管理:

	<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>

3、在application.propertites中增加如下配置:

#feign的配置,连接超时及读取超时配置
feign.client.config.default.connectTimeout=5000
feign.client.config.default.readTimeout=5000
feign.client.config.default.loggerLevel=basic
#开启熔断功能
feign.hystrix.enabled=true

4、在application启动入口增加@EnableFeignClients注解:

@EnableFeignClients
@ImportResource("classpath:hibernate.xml")
@SpringBootApplication
public class Zero4jApplication extends SpringBootServletInitializer{
	
	@Override
	protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
		return builder.sources(Zero4jApplication.class);
	}

	public static void main(String[] args) {
		SpringApplication.run(Zero4jApplication.class, args);
	}

}

5、创建FeignClient客户端:

package com.zero4j.controller.api.v1;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PatchMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;

@FeignClient(value="zero4j-provider-area", fallback=AreasApiHystrixV1.class)
public interface AreasApiFeignClientV1 {

	@PatchMapping(value="api/v1/areas/{id}")
	String update(
			@PathVariable(value="id") String id,
			@RequestParam(value="token",required=false) String token,
			@RequestParam(value="name",required=false) String name,
			@RequestParam(value="parentId",required=false) String parentId,
			@RequestParam(value="hasChildren",required=false) Boolean hasChildren
		);

}

6、编写调用微服务的Controller:

package com.zero4j.controller.api.v1;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONObject;

import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PatchMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import com.zero4j.model.area.service.AreaService;


@RestController
@RequestMapping("/api/v1/areas")
public class AreasApiControllerV1 {

	@Autowired
	private AreaService areaService;
	
	@Autowired
	private SessionFactory sessionFactory;
	
	@Autowired
	private RestTemplate restTemplate;
	
	@PatchMapping(value="/{id}")
	public ResponseEntity update(HttpServletRequest request,HttpServletResponse response,
			@PathVariable(value="id") String id,
			@RequestParam(required=false) String token,
			@RequestParam(required=false) String name,
			@RequestParam(required=false) String parentId,
			@RequestParam(required=false) Boolean hasChildren
		){
		
		return ResponseEntity.ok((String)areaApiFeignClient.update(id,token,name,parentId,hasChildren));
	}
	

}

7、编写熔断处理方法:

package com.zero4j.controller.api.v1;

import net.sf.json.JSONObject;

import org.springframework.stereotype.Component;

@Component
public class AreasApiHystrixV1 implements AreasApiFeignClientV1 {

	@Override
	public String update(String id, String token, String name, String parentId, Boolean hasChildren) {
		JSONObject out = new JSONObject();
		out.put("status", 400);
		out.put("message", "update服务异常");
		out.put("debug", "update服务异常");
		return out.toString();
	}

}

8、启动服务,访问对应的api,分别在微服务开启、关闭的时候调用API,查看结果即可。

微服务的技术栈

微服务条目 落地技术
服务开发 SpringBoot,Spring,SpringMVC
服务配置与管理 Netflix公司的Archaius、阿里的Diamond等
服务注册与发现 Eureka、Consul、Zookeeper等
服务调用 Rest、RPC、gRPC
服务熔断器 Hystrix、Envoy等
负载均衡 Ribbon、Nginx等
服务接口调用(客户端调用服务的简化工具) Feign等
消息队列 Kafka、RabbitMQ、ActiveMQ等
服务配置中心管理 SpringCloudConfig、Chef等
服务路由(API网关) Zuul等
服务监控 Zabbix、Nagios、Metrics、Specatator等
全链路追踪 Zipkin、Brave、Dapper等
服务部署 Docker、OpenStack、Kubernetes等
数据流操作开发包 SpringCloud Stream(封装与Redis,Rabbit,Kafka等发送接收消息)
事件消息总线 SpringCloud Bus

 

使用SpringBoot2.1.1配置SpringCloudConfig服务

配置中心服务器:

1、在pom.xml中加入如下依赖:

	        <dependency>
	        	<groupId>org.springframework.boot</groupId>
	        	<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<!-- Spring Cloud Config - Server依赖 -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-config-server</artifactId>
			<version>2.1.1.RELEASE</version>
		</dependency>

注意高亮行,这个version需要和springboot的版本号一致。

2、在启动类中加入@EnableConfigServer注解

3、创建bootstrap.yml配置文件,本地配置如下:

#服务启动端口配置:
server:  
  port: 3000
  
#指定配置文件所在目录或地址
spring:
  profiles:
    active: native
  cloud:
    config:
      server:
        native:
          search-locations: classpath:/config/
          #search-locations: D:/Workspaces/zero4j/config/src/main/resources/config

4、在项目的resources(class)目录中创建config文件夹,并在里面新增application-dev.properties文件,内容如下:

server.address=127.0.0.1
server.port=8081
a.url=dev1233

5、启动并访问 http://localhost:3000/application-dev.properties,能看到

配置客户端:

1、在pom.xml中加入如下依赖:

		<dependency>
            		<groupId>org.springframework.boot</groupId>
            		<artifactId>spring-boot-starter-web</artifactId>
        	</dependency>

		<!-- Spring Cloud Config - Client依赖 -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-config-client</artifactId>
			<version>2.1.1.RELEASE</version>
		</dependency>

同样的,version那里切记要跟springboot的版本一致。

2、创建bootstrap.yml配置文件,配置如下:

#启动端口配置:
server:  
  port: 8080

# 指明配置服务中心的网址
spring:
  application:
    name: application
  cloud:
    config:
      label: master
      profile: dev
      uri: http://127.0.0.1:3000

3、创建测试用的controller

package com.zero4j.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {

	@Value("${a.url}")
	private String datUrl;
	
	@GetMapping(value = "/test")
	public String hi(){
		return datUrl;
	}

}

4、启动并访问http://localhost:8081/test,便能看到client获取server的class中config里的配置文件对应的a.url配置

close