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使用spring cloud更改eureka服务器的默认端口(Changing default port of eureka server using spring cloud)

 我得到了spring-boot应用程序，eureka服务器和eureka客户端。  
 这是我的服务器配置  
server:
  port: 8761

spring:
  application:
    name: eureka-server
 
 这是我的服务器代码  
package fr.maif.eurekaserver;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;

@SpringBootApplication
@EnableEurekaServer
@EnableZuulProxy
public class EurekaServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaServerApplication.class, args);
    }
}
 
 这是客户端配置  
spring:
  application:
    name: eureka-client
server:
  port: 8083
eureka:
  client:
    serviceUrl:
      defaultZone: "http://localhost:8761/eureka"
 
 这是我的客户端代码  
package fr.maif.eurekaclient;

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

@SpringBootApplication
@EnableDiscoveryClient
public class EurekaClientApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaClientApplication.class, args);
    }
}
 
 上述工作完美，而服务器端口仍然是8761，但是当我尝试在服务器端口和客户端defaultZone配置中更改它（到8080或任何其他值）时，服务器不断抛出ConnectExceptions。  
2017-08-10 15:54:31.424 ERROR 22219 --- [get_localhost-4] c.n.e.cluster.ReplicationTaskProcessor   : Network level connection to peer localhost; retrying after delay

com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused (Connection refused)
    at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:187) ~[jersey-apache-client4-1.19.1.jar:1.19.1]
    at com.netflix.eureka.cluster.DynamicGZIPContentEncodingFilter.handle(DynamicGZIPContentEncodingFilter.java:48) ~[eureka-core-1.6.2.jar:1.6.2]
    at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:27) ~[eureka-client-1.6.2.jar:1.6.2]
    at com.sun.jersey.api.client.Client.handle(Client.java:652) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource.handle(WebResource.java:682) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:570) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.netflix.eureka.transport.JerseyReplicationClient.submitBatchUpdates(JerseyReplicationClient.java:116) ~[eureka-core-1.6.2.jar:1.6.2]
    at com.netflix.eureka.cluster.ReplicationTaskProcessor.process(ReplicationTaskProcessor.java:71) ~[eureka-core-1.6.2.jar:1.6.2]
    at com.netflix.eureka.util.batcher.TaskExecutors$BatchWorkerRunnable.run(TaskExecutors.java:187) [eureka-core-1.6.2.jar:1.6.2]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_131]
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_131]
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_131]
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_131]
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_131]
    at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_131]
    at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:118) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.3.jar:4.5.3]
    at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:173) ~[jersey-apache-client4-1.19.1.jar:1.19.1]
    ... 10 common frames omitted
 
 我做错了什么？ 

I got to spring-boot application, an eureka server and an eureka client. 
Here is my server configuration 
server:
  port: 8761

spring:
  application:
    name: eureka-server
 
Here is my server code 
package fr.maif.eurekaserver;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;

@SpringBootApplication
@EnableEurekaServer
@EnableZuulProxy
public class EurekaServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaServerApplication.class, args);
    }
}
 
Here is the client configuration 
spring:
  application:
    name: eureka-client
server:
  port: 8083
eureka:
  client:
    serviceUrl:
      defaultZone: "http://localhost:8761/eureka"
 
Here is my client code 
package fr.maif.eurekaclient;

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

@SpringBootApplication
@EnableDiscoveryClient
public class EurekaClientApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaClientApplication.class, args);
    }
}
 
The above works perfectly while the server port remains 8761, however when I try to change it (to 8080 or any other value) both in server port & client defaultZone configuration, the server continuously throws ConnectExceptions. 
2017-08-10 15:54:31.424 ERROR 22219 --- [get_localhost-4] c.n.e.cluster.ReplicationTaskProcessor   : Network level connection to peer localhost; retrying after delay

com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused (Connection refused)
    at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:187) ~[jersey-apache-client4-1.19.1.jar:1.19.1]
    at com.netflix.eureka.cluster.DynamicGZIPContentEncodingFilter.handle(DynamicGZIPContentEncodingFilter.java:48) ~[eureka-core-1.6.2.jar:1.6.2]
    at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:27) ~[eureka-client-1.6.2.jar:1.6.2]
    at com.sun.jersey.api.client.Client.handle(Client.java:652) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource.handle(WebResource.java:682) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:570) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.netflix.eureka.transport.JerseyReplicationClient.submitBatchUpdates(JerseyReplicationClient.java:116) ~[eureka-core-1.6.2.jar:1.6.2]
    at com.netflix.eureka.cluster.ReplicationTaskProcessor.process(ReplicationTaskProcessor.java:71) ~[eureka-core-1.6.2.jar:1.6.2]
    at com.netflix.eureka.util.batcher.TaskExecutors$BatchWorkerRunnable.run(TaskExecutors.java:187) [eureka-core-1.6.2.jar:1.6.2]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_131]
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_131]
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_131]
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_131]
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_131]
    at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_131]
    at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:118) ~[httpclient-4.5.3.jar:4.5.3]
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.3.jar:4.5.3]
    at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:173) ~[jersey-apache-client4-1.19.1.jar:1.19.1]
    ... 10 common frames omitted
 
What do I do wrong ?

原文：https://stackoverflow.com/questions/45615866

更新时间：2023-04-28 22:04

最满意答案

 你正在使用没有选择的svg：你只是附加了一个没有附加任何数据的单个元素，这就是为什么d=undefined而你在transform函数中i=0的例子。  
 像在团队创作中一样使用选择：类似于  
var selection = svg.append("g").attr("transform", "translate(200,200)").
    selectAll("text").data(d3.range(numberOfSegments)).enter()

var label = selection.append("text")
    .attr("transform", function (d) {
        return "translate(" + pos.centroid(d) + ")";
    })
    .attr("text-anchor", "middle")
    .text(function (d) {
        return d * degrees + "°";
    });
 
 和一个演示（标签的定位可以使用一些工作，但这应该让你开始）  
 
 
  
  var margin = {
    top: 10,
    right: 50,
    bottom: 10,
    left: 50
},
width = 300,
    r = width / 2,
    labelr = r + 20,
    outerRadius = 150,
    innerRadius = outerRadius - 30;
numberOfSegments = 12;
radians = (Math.PI * 2) / numberOfSegments;
degrees = 360 / numberOfSegments;

var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", 530);

for (var j = 0; j < 5; j++) {
    var arc = d3.svg.arc()
        .innerRadius(innerRadius - j * 30)
        .outerRadius(outerRadius - j * 30)
        .startAngle(function (d, i) {
        	return radians * i
        }).endAngle(function (d, i) {
            return radians * (i + 1)
        });

    var myGroup = svg.append("g")
        .attr("transform", "translate(200,200)")
        .attr("class", "arcgroup")
        .selectAll("path").data(d3.range(numberOfSegments))
        .enter().append("path")
        .attr("class", "seg" + j + "")
        .attr("d", arc)
        .attr("fill", function (d, i) {
        return d3.hsl(i * degrees, 1 - 0.2 * j, 0.5)
    });
}


var pos = d3.svg.arc()
    .innerRadius(innerRadius+30)
    .outerRadius(outerRadius+30)
    .startAngle(function (d) {
    	return radians * d
	}).endAngle(function (d) {
    	return radians * (d + 1)
	});


var selection = svg.append("g").attr("transform", "translate(200,200)").
	selectAll("text").data(d3.range(numberOfSegments)).enter()

var label = selection.append("text")
    .attr("transform", function (d) {
    	return "translate(" + pos.centroid(d) + ")";
	})
    .attr("text-anchor", "middle")
    .text(function (d) {
    	return d * degrees + "°";
	}); 
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script> 
  
 

You're working on the svg without a selection : you're only appending a single element without any datum attached, that's why d=undefined and i=0 in your transform function for example. 
Use a selection like you do in your group creations : something like 
var selection = svg.append("g").attr("transform", "translate(200,200)").
    selectAll("text").data(d3.range(numberOfSegments)).enter()

var label = selection.append("text")
    .attr("transform", function (d) {
        return "translate(" + pos.centroid(d) + ")";
    })
    .attr("text-anchor", "middle")
    .text(function (d) {
        return d * degrees + "°";
    });
 
And a demo (the labels' positioning could use some work but that should get you started) 
 
 
  
  var margin = {
    top: 10,
    right: 50,
    bottom: 10,
    left: 50
},
width = 300,
    r = width / 2,
    labelr = r + 20,
    outerRadius = 150,
    innerRadius = outerRadius - 30;
numberOfSegments = 12;
radians = (Math.PI * 2) / numberOfSegments;
degrees = 360 / numberOfSegments;

var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", 530);

for (var j = 0; j < 5; j++) {
    var arc = d3.svg.arc()
        .innerRadius(innerRadius - j * 30)
        .outerRadius(outerRadius - j * 30)
        .startAngle(function (d, i) {
        	return radians * i
        }).endAngle(function (d, i) {
            return radians * (i + 1)
        });

    var myGroup = svg.append("g")
        .attr("transform", "translate(200,200)")
        .attr("class", "arcgroup")
        .selectAll("path").data(d3.range(numberOfSegments))
        .enter().append("path")
        .attr("class", "seg" + j + "")
        .attr("d", arc)
        .attr("fill", function (d, i) {
        return d3.hsl(i * degrees, 1 - 0.2 * j, 0.5)
    });
}


var pos = d3.svg.arc()
    .innerRadius(innerRadius+30)
    .outerRadius(outerRadius+30)
    .startAngle(function (d) {
    	return radians * d
	}).endAngle(function (d) {
    	return radians * (d + 1)
	});


var selection = svg.append("g").attr("transform", "translate(200,200)").
	selectAll("text").data(d3.range(numberOfSegments)).enter()

var label = selection.append("text")
    .attr("transform", function (d) {
    	return "translate(" + pos.centroid(d) + ")";
	})
    .attr("text-anchor", "middle")
    .text(function (d) {
    	return d * degrees + "°";
	}); 
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>

使用spring cloud更改eureka服务器的默认端口(Changing default port of eureka server using spring cloud)

最满意答案

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