场景 – EAR安装在Websphere应用服务器上,运行在30多个JVM上.我想只在一个JVM上创建一个属性,并希望在我的
java代码中读取它.
如何通过WAS控制台创建JVM级别属性并在
Java中读取它. 最佳答案 创建自定义属性
在WAS(server1)或Deployment Manager管理控制台中,导航到
服务器> ServerTypes> WebSphere应用程序服务器cutom属性
然后单击要创建的JVM
服务器基础设施(部分)> Java和流程管理>流程定义
附加属性(部分)> Java虚拟机> Cutom属性
单击“新建”按钮以添加新的自定义属性.
点击“应用”.
直接单击“保存”到主配置.
在独立或单节点环境中,您需要停止并重新启动服务器才能使更改生效.
在集群环境中,您在Deployment Manager中定义了该属性,您可能希望执行“完全重新同步”并重新启动集群.
>通过Java代码访问
在定义属性的WebSphere Application Server或节点中定义自定义属性之后,您可以像访问Java中的系统属性一样访问其值,如下所示:
String custProperty = System.getProperty("wbe.home");
您可以类似地在JSP页面中使用scriptlet,如下所示:
<%
String custProperty = System.getProperty("wbe.home");
if ( custProperty .equalsIgnoreCase("home") ) {
%>
如果要自动执行将自定义属性添加到30 JVM的手动任务
您可以使用Jython脚本.您可以根据您的要求进行修改.
server = sys.argv[0]
property = sys.argv[1]
value = sys.argv[2]
if (len(sys.argv) == 4):
descr = sys.argv[3]
else :
descr = None
# Convert a list of items separated by linefeeds into an array
def getListArray(l):
return l.splitlines()
# Obtain the "simple" server name
def getServerName(s):
return AdminConfig.showAttribute(s, 'name')
# Add common attr list to specified Server's JVM
def addPropertiesToServer(s):
jvm = AdminConfig.list('JavaVirtualMachine', s)
# Look for existing property so we can replace it (by removing it first)
currentProps = getListArray(AdminConfig.list("Property", jvm))
for prop in currentProps:
if property == AdminConfig.showAttribute(prop, "name"):
print "Removing existing property from Server %s" % getServerName(s)
AdminConfig.remove(prop)
# Store new property in 'systemProperties' object
print "Adding property to Server %s" % getServerName(s)
AdminConfig.modify(jvm,[['systemProperties',attr]])
# Construct list with new property name and value
attr = []
if (descr is None):
print "Adding property %s=%s" % (property,value)
attr.append([['name',property],['value',value]])
else:
print "Adding property %s=%s,%s" % (property,value,descr)
attr.append([['name',property],['value',value],['description',descr]])
# Locate all Application Servers if server is 'all'
if (server == 'all'):
servers = AdminConfig.list('Server')
for aServer in getListArray(servers):
type = AdminConfig.showAttribute(aServer,'serverType')
if (type == 'APPLICATION_SERVER'):
addPropertiesToServer(aServer)
# TODO: support comma-separated list of servers
else:
# Locate specified Server and its JVM
server = AdminConfig.getid('/Server:'+server+'/')
addPropertiesToServer(server)
# Save changes
if (AdminConfig.hasChanges()):
AdminConfig.save()