我在我的春季启动应用程序中使用jmx设置了jolokia,因此我可以通过HTTP获取jmx信息。
但是我无法通过javascript ajax获取数据,并且错误“No'Access-Control-Allow-Origin'标头出现在请求的资源上。因此,不允许原点'http://localhost:8080'访问。 “
我想让jolokia端点返回'Access-Control-Allow-Origin:*'标头以允许任何来源或者至少返回我在jolokia-access.xml上指定的允许来源的标头,但是我没有得到响应中的标题,我不确定我错过了什么
我正在运行的监控javascript不在具有我的spring启动应用程序的同一台服务器上,因为我想让脚本远程运行。
以下是我的春季启动应用程序设置。
application.properties和jolokia-access.xml都在classpath中,所以我可以看到我对application.properties上的management.port所做的更改以及对jolokia-access.xml的远程帖子访问限制的应用
的pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.4.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.jolokia</groupId>
<artifactId>jolokia-core</artifactId>
</dependency>
:
application.properties
management.port=8888
endpoints.jolokia.path=/jolokia
endpoints.jolokia.enabled=true
endpoints.jmx.enabled=true
endpoints.cors.allowed-origins=*
endpoints.cors.allowed-methods=*
endpoints.cors.allowed-headers=*
椒-access.xml
<?xml version="1.0" encoding="UTF-8"?>
<restrict>
<remote>
<host>127.0.0.1</host>
<host>localhost</host>
</remote>
<http>
<method>post</method>
<method>get</method>
</http>
<commands>
<command>read</command>
<command>list</command>
<command>version</command>
</commands>
<cors>
<allow-origin>http://localhost:*</allow-origin>
<allow-origin>http://127.0.0.1:*</allow-origin>
</cors>
</restrict>
当我通过curl点击jolokia端点时,我可以将响应中的jmx数据作为json,如下所示
$ curl -X POST http://127.0.0.1:8888/jolokia -d '{
"type":"read",
"mbean":"org.springframework.boot:type=Endpoint,name=healthEndpoint",
"attribute":"Data"
}'
{"request":{"mbean":"org.springframework.boot:name=healthEndpoint,type=Endpoint","attribute":"Data","type":"read"},
"value":{"diskSpace":{"threshold":10485760,"free":204441415680,"status":"UP"},"db":{"database":"H2","hello":1,"status":"UP"},"status":"UP"},
"timestamp":1433908260,"status":200}
$ curl -X POST http://127.0.0.1:8888/jolokia -d '{
"type":"read",
"mbean":"java.lang:type=Memory",
"attribute":"HeapMemoryUsage",
"path":"used"
}'
{"request":{"path":"used","mbean":"java.lang:type=Memory","attribute":"HeapMemoryUsage","type":"read"},
"value":69036712,"timestamp":1434075946,"status":200}
然而,javascipt失败,因为来自jolokia端点的resposne没有Access-Control-Allow-Origin'标头。 即使我设置'endpoints.cors.allowed-originins = *'属性,但我没有在响应中看到标题
监控javascript
var j4p = new Jolokia({url: "http://127.0.0.1:8888/jolokia", fetchInterval: 1000});
var context = cubism.context()
.serverDelay(0)
.clientDelay(0)
.step(1000)
.size(594);
var jolokia = context.jolokia(j4p);
var memory = jolokia.metric(
function (resp1, resp2) {
return Number(resp1.value) / Number(resp2.value);
},
{type:"read", mbean:"java.lang:type=Memory", attribute:"HeapMemoryUsage", path:"used"},
{type:"read", mbean:"java.lang:type=Memory", attribute:"HeapMemoryUsage", path:"max"}, "Heap-Memory"
);
请求标头javascript已发送
Accept:*/*
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-US,en;q=0.8
Access-Control-Request-Headers:accept, content-type
Access-Control-Request-Method:POST
Connection:keep-alive
Host:127.0.0.1:8888
Origin:http://127.0.0.1:8080
Referer:http://127.0.0.1:8080/monitor/
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.124 Safari/537.36
收到javascript的响应标题
Allow:GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH
Cache-Control:no-cache, no-store, max-age=0, must-revalidate
Content-Length:0
Date:Fri, 12 Jun 2015 02:27:17 GMT
Expires:0
Pragma:no-cache
Server:Jetty(9.2.10.v20150310)
X-Content-Type-Options:nosniff
X-Frame-Options:DENY
X-XSS-Protection:1; mode=block
如上所示,根本没有“Access-Control-Allow-Origin”标题。
答案 0 :(得分:0)
默认情况下,Jolokia允许任何跨域访问。所以根本不需要jolokia-access.xml
。
另一方面,我认为你的模式应该有效。但是请在GitHub上提出一个问题,以便我们可以继续解决这个问题。