小编VC1*_*VC1的帖子

JNDI名称有什么用？我正在尝试使用Java 5的新注释功能获取javax.sql.DataSource.它对我不起作用,所以我想问...

我在我的web.xml中,里面是一个元素.我在"jdbc/MyDB"和"MyDB"之间切换.既没有使我的基于类的DataSource工作(它总是为null),但在另一个我使用taglib创建的例子中,这两个JNDI名称都有效.

所以我按照"从头开始验证"的轨道进行了操作 - http://railscasts.com/episodes/250-authentication-from-scratch

我知道rails 4不使用attr_accessible.我在我的用户控制器中将user_params定义为私有方法.出于某种原因,rails给了我一个用户参数的未定义错误.我正在开发另一个rails应用程序,我检查了它中的post控制器.除了工作之外,它完全一样.知道这里的问题是什么吗？

users_controller.rb

class UsersController < ApplicationController
  def new
    @user = User.new
  end

  def create
    @user = User.create(user_params)
  if @user.save
   redirect_to root_url, :notice => "Signed up!"
 else
   render "new"
   end
private

def user_params
  params.require(:user).permit(:email, :password, :password_confirmation)
 end    

错误消息:未定义的局部变量或方法`user_params'for#

完整堆栈跟踪:

app/controllers/create' actionpack (4.1.1) lib/action_controller/metal/implicit_render.rb:4:inusers_controller.rb :7:在send_action'actionpack(4.1.1)lib/abstract_controller/base.rb:189:in process_action' actionpack (4.1.1) lib/action_controller/metal/rendering.rb:10:inprocess_action'actionpack(4.1.1)lib/abstract_controller/callbacks.rb:20:in block in process_action' activesupport (4.1.1) lib/active_support/callbacks.rb:113:incall 'activesupport(4.1.1)lib/active_support/callbacks.rb:113:在call' activesupport (4.1.1) lib/active_support/callbacks.rb:229:in块中停止'activesupport(4.1.1)lib/active_support/callbacks.rb:229:在call' activesupport (4.1.1) lib/active_support/callbacks.rb:229:in块中停止'activesupport(4.1.1)lib /active_support/callbacks.rb:166:in call' activesupport (4.1.1) lib/active_support/callbacks.rb:166:in 阻止'activesupport(4.1.1)lib/active_support/callbacks.rb:166:在call' activesupport …

对于访问非liferay Oracle数据库的Liferay 6.2自定义portlet,我们遇到的问题是返回的数据源为null.

我们已经配置了tomcat/conf/context.xml

<!-- Adding custom New non liferay datasource -->
<Resource name="jdbc/NewPool" 
auth="Container"               
type="javax.sql.DataSource" 
driverClassName="oracle.jdbc.OracleDriver" 
url="jdbc:oracle:thin:@(DESCRIPTION = 
(ADDRESS = (PROTOCOL = TCP)(HOST = dbservernameorip)(PORT = 9999))
(CONNECT_DATA = (SERVER = DEDICATED) 
(SERVICE_NAME = dbSIDorservicename)))"
username="user" 
password="pwd" 
maxActive="35"
maxIdle="10"
maxWait="20000"
removeAbandoned="true"
logAbandoned="true"
minEvictableIdleTimeMillis="3600000"
timeBetweenEvictionRunsMillis="1800000"
testOnBorrow="true"
testOnReturn="false"
/>

portlet web.xml包含:

<resource-ref>
    <description>Oracle Datasource example</description>
    <res-ref-name>jdbc/NewPool</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>

查找代码是:

String JNDI = "jdbc/NewPool"
_log.debug("JNDI Name  is: " + JNDI);
_log.debug("dataSource in dbConnect is :" + dataSource);
Context context = new …

以下是我的 database.yml

development:
     adapter:  postgresql
     host:     localhost
     encoding: unicode
     database: pepe_development
     pool:     5
     username: pepe
     password: password
     template: template0

当我这样做时，我得到以下信息 db:migrate

smaringanti-mbp:xpm smaringanti$ rake db:migrate 警告：在 Figaro 配置中使用字符串。["admin", "user", "VIP"] 被转换为 "[\"admin\", \"user\", \"VIP\"]"。耙子中止！ActiveRecord::StatementInvalid: PG::InsufficientPrivilege: 错误：权限被拒绝关系 schema_migrations : SELECT "schema_migrations".* FROM "schema_migrations" /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/ activerecord-4.0.2/lib/active_record/connection_adapters/postgresql_adapter.rb:774:in async_exec' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql_adapter.rb:774:inexec_no_cache' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib /active_record/connection_adapters/postgresql/database_statements.rb:138:in block in exec_query' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/connection_adapters/abstract_adapter.rb:435:in阻止日志'/Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activesupport-4.0.2/lib/active_support/notifications/instrumenter.rb:20:in instrument' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/connection_adapters/abstract_adapter.rb:430:inlog' /Users/ smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql/database_statements.rb:137:in exec_query' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql_adapter.rb:891:inselect'/Users/smaringanti/.rvm/ gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/connection_adapters/abstract/database_statements.rb:24:in select_all' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/connection_adapters/abstract/query_cache.rb:63:in select_all' /Users/smaringanti/.rvm/gems/ruby-2.0 .0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/querying.rb:36:in find_by_sql' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/relation.rb:585:in exec_queries'/Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/ activerecord-4.0.2/lib/active_record/relation.rb:471:in load' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/relation.rb:220:in to_a' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/relation/delegation.rb:12:in map' /Users/smaringanti/.rvm/gems/ruby-2.0.0-p643@pepe/gems/activerecord-4.0.2/lib/active_record/migration.rb:787:in get_all_versions' /Users/smaringanti/ …

我在Linux redhad设置上有一个带有apache 1.3(启用了SSL)+ mod_jk + tomcat 5.5的网站.就在最近,我的网站开始出现停机问题.每天一次,我的网站挂在端口80上.但如果我通过8080 tomcat直接访问响应和网站工作正常.80和8080端口都可以访问,但与mod_jk的apache和tomcat连接断开.只有在我重新启动tomcat之后,事情才恢复正常.

我刚刚配置了apache mod_Jk来记录错误,所以我会看到下次挂起时是否会有任何错误.

apache mod_js conf:

JkShmSize   1000M

阿帕奇工人conf:

worker.list=worker1
worker.worker1.type=ajp13
worker.worker1.host=127.0.0.1
worker.worker1.port=8009
worker.worker1.lbfactor=1
worker.worker1.socket_keepalive=1
worker.worker1.recycle_timeout=180
worker.worker1.sticky_session=False

我检查了tomcat上的web应用程序错误/警告日志,我有一些"内存不足"的java异常.应用程序错误会导致此问题吗？是网站过载问题还是内存泄漏？目前dev/mapper/VolGroup00-LogVol00只有4%的可用空间.这可能是问题的原因吗？

我也有这个日志条目,它匹配服务器挂起时间:

/ var/log/messages:端口8009上可能的SYN泛洪.发送cookie

更新: 我刚刚收到另一个,mod_jk日志给出了这个:

[Sun Nov 14 00:57:03 2010] [error] ajp_connection_tcp_get_message::jk_ajp_common.c (961): Can't receive the response message from tomcat, network problems or tomcat is$ [Sun Nov 14 00:57:03 2010] [error] ajp_get_reply::jk_ajp_common.c (1503): Tomcat is down or refused connection. No response has been sent to the client (yet) [Sun Nov 14 00:57:08 2010] …

在Liferay 6.0插件MVC portlet中,如何从portlet类访问portlet配置？

请注意,"配置"我的意思是特定于portlet的一个实例,并且是值不是用户特定的; 如果管理员设置了portlet配置值,它应该对所有用户生效.

例如:

public class MyPortlet extends MVCPortlet
{
  @Override
  public void doView(RenderRequest renderRequest, RenderResponse renderResponse)
    throws IOException, PortletException
  {
    // Fill in the blank; what goes here?
    String configValue = ?;

    renderRequest.setAttribute("some-key", configValue);        

    super.doView(renderRequest, renderResponse);
  }
}

在JS控制台上玩我遇到了一种奇怪的语法.我想知道是否有人可以告诉我更多...

试试这个:

>( function f(){console.log('i am f')} , (function x(){console.log('i am x')})() , y=2 , console.log('hello') )
i am x
hello
undefined
>f()
ReferenceError: f is not defined
>this.y
2

这将失败:

(var c = 2)SyntaxError:意外的令牌变量

因此评估括号内的逗号分隔表达式,赋值碰巧是针对全局范围的,但命名函数声明引用仍然被困在内部,就像一个闭包更多......将该行放入一个用new调用的函数声明中:

function C(){
    ( function f(){console.log('i am f')} , (function x(){console.log('i am x')})() , y=2 , console.log('hello') )
}

然后实例化:

>var c=new C()
i am x
hello
undefined
>c.y
undefined
>this.y
2

发生完全相同,就像在全球范围内执行一样!

这个结构的用途/目的是什么？

多一个:

>( function f(){console.log('i am f')} , f() ) …

我已经开始学习Rails了,而且我第9章第三次练习了.

该演习看起来是这样的:

  test "should not allow the admin attribute to be edited via the web" do
    log_in_as(@other_user)
    assert_not @other_user.admin?
    patch :update, id: @other_user, user: { password:              FILL_IN,
                                            password_confirmation: FILL_IN,
                                            admin: FILL_IN }
    assert_not @other_user.FILL_IN.admin?
  end

我的问题是last Fill_IN >> assert_not @other_user.FILL_IN.admin？

@other_user 取自Fixture,看起来像这样:

archer:
  name: Sterling Archer
  email: duchess@example.gov
  password_digest: <%= User.digest('password') %>

Update action 看起来像这样:

  def update
    @user = User.find(params[:id])
    if @user.update_attributes(user_params)
      flash[:success] = "Profile updated"
      redirect_to @user
    else
      render 'edit'
    end
  end

我还添加:admin到user_params所以 …

我要求:

• 提交请求后,Liferay会显示该消息

您的请求已成功处理

• 而不是我必须添加自定义消息并显示它们,如课程创建成功,课程删除成功,课程修改成功等.

可能吗？有没有办法显示成功或失败的消息？

<%@page import ="javax.portlet.PortletURL" %>
<%@ page import="javax.portlet.RenderResponse" %>
<%@ page import="javax.portlet.ActionRequest" %>
<%@ page import="com.liferay.portal.kernel.util.Validator" %>
<% 

PortletURL searchCourseURL=renderResponse.createActionURL(); 

searchCourseURL.setParameter(ActionRequest.ACTION_NAME,"findCourses"); 

%>
<script type="text/javascript" src="/html/js/jquery/jquery.js"></script>

<form action="<%=searchCourseURL%>" method="post">
<div class="label1">Enter Course Name</div><input type="text" id="cname" name="cname" value=" "/>
<input type="submit" name="submit" value="Submit"/>
</form>

在上面的示例中,在提交请求后,它显示请求过程成功,而我必须显示消息:

搜索完成

我是新来的。

试图运行spark on yarn in yarn-client mode。

SPARK VERSION = 1.0.2 HADOOP VERSION = 2.2.0

纱线簇具有3个活动节点。

在spark-env.sh中设置的属性

SPARK_EXECUTOR_MEMORY = 1G

SPARK_EXECUTOR_INSTANCES = 3

SPARK_EXECUTOR_CORES = 1

SPARK_DRIVER_MEMORY = 2G

使用的命令：/ bin / spark-shell --master yarn-client

但是登录后spark-shell，它只注册了1个执行程序，并为其分配了一些默认的内存。

我也通过spark-web UI它确认了它只有1个执行器，并且也YARN resource manager node仅在主节点（）上。

INFO yarn.Client：用于启动Spark Application的命令主：列表（$ JAVA_HOME / bin / java，-server，-Xmx2048m，-Djava.io.tmpdir = $ PWD / tmp，-Dspark.tachyonStore.folderName = \“ spark- fc6383cc-0904-4af9-8abd-3b66b3f0f461 \“，-Dspark.yarn.secondary.jars = \” \“，-Dspark.home = \” / home / impadmin / spark-1.0.2-bin-hadoop2 \“， -Dspark.repl.class.uri …