我想在一个CSS文件中添加一个CSS文件并在每个CSS选择器之前添加另一个选择器.
从:
p{margin:0 0 10px;}
.lead{margin-bottom:20px;font-size:21px;font-weight:200;line-height:30px;}
我想要:
.mySelector p{margin:0 0 10px;}
.mySelector .lead{margin-bottom:20px;font-size:21px;font-weight:200;line-height:30px;}
但是我的CSS文件非常复杂(事实上它是bootstrap css文件)所以正则表达式应该匹配所有的CSS选择器.
现在我有这个正则表达式:
([^\r\n,{};]+)(,|{)
你可以在http://regexr.com?328ps看到结果 但是你可以看到有很多不匹配的比赛
例如:
text-shadow:0 -1px 0 rgba(0,
匹配积极,但不应该
有人有解决方案吗？
谢谢
有人可以解释我为什么我的JUnit测试失败:
意外异常,预期<java.lang.NullPointerException>但是<java.lang.IllegalArgumentException>
package com;
import java.util.Objects;
import javax.annotation.Nonnull;
import javax.validation.constraints.NotNull;
import org.junit.Test;
public class AnnotationTest {
private void nonnullMethod(@Nonnull String arg) {
Objects.requireNonNull(arg);
}
@Test(expected = NullPointerException.class)
public void nonnullMethodTest() {
nonnullMethod(null);
}
private void notNullMethod(@NotNull String arg) {
Objects.requireNonNull(arg);
}
@Test(expected = NullPointerException.class)
public void notNullMethodTest() {
notNullMethod(null);
}
}
这里是StackTrace:
java.lang.Exception: Unexpected exception, expected<java.lang.NullPointerException> but was<java.lang.IllegalArgumentException>
at org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:28)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at …我有一个使用Resteasy 3.1.4.Final的相当基本的Java8应用程序，已部署在App Engine标准环境中。
但是当我将Resteasy升级到3.5.0.Final时；
来自org.jboss.resteasy.core.ResourceMethodInvoker.isSseResourceMethod（ResourceMethodInvoker.java:162）的servlet java.lang.NoSuchFieldError：SERVER_SENT_EVENTS_TYPE的未捕获异常.org.jboss.resteasy.core.ResourceMethodInvoker。（ResourceMethodInvoker。 org.jboss.resteasy.core.ResourceMethodRegistry.register（ResourceMethodRegistry.java:272）上的.jboss.resteasy.core.ResourceMethodRegistry.processMethod（ResourceMethodRegistry.java:345）在org.jboss.resteasy.core.ResourceMethodRegistry.addResourceFactory（ResourceMethodRegistry .java：223），位于org.jboss.resteasy的org.jboss.resteasy.core.ResourceMethodRegistry.addResourceFactory（ResourceMethodRegistry.java:195），位于org.jboss.resteasy.core.ResourceMethodRegistry.addResourceFactory（ResourceMethodRegistry.java:181）。核心。org.org.jboss.resteasy.spi.ResteasyDeployment.registration（ResteasyDeployment.java.496）上org.jboss.resteasy.core.ResourceMethodRegistry.addPerRequestResource（ResourceMethodRegistry.java:77）上的ResourceMethodRegistry.addResourceFactory（ResourceMethodRegistry.java:158） org.jboss.resteasy.spi.ResteasyDeployment.start（ResteasyDeployment.java:86）上的.jboss.resteasy.spi.ResteasyDeployment.startInternal（ResteasyDeployment.java:279）在org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.init（HttpServletDispatcher.java:36）上的.init（ServletContainerDispatcher.java:119）org.eclipse.jetty.servlet.ServletHolder.initServlet（ServletHolder.java:643） ），网址为org.eclipse.jetty.servlet.ServletHolder.initialize（ServletHolder.java：422）在org.eclipse.jetty.servlet.ServletHandler.initialize（ServletHandler.java:892）在org.eclipse.jetty.servlet.ServletContextHandler.startContext（ServletContextHandler.java:349）在org.eclipse.jetty.webapp.WebAppContext org.eclipse.jetty.webapp.WebAppContext.startContext（WebAppContext.java:1368）的.startWebapp（WebAppContext.java:1406）org.eclipse.jetty.server.handler.ContextHandler.doStart（ContextHandler.java:778） org.eclipse.jetty.webapp.WebAppContext.doStart（WebAppContext.java:522）上的org.eclipse.jetty.servlet.ServletContextHandler.doStart（ServletContextHandler.java:262）在org.eclipse.jetty.util.component.AbstractLifeCycle上。在com.google.com上从com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.createHandler（AppVersionHandlerMap.java:244）开始（AbstractLifeCycle.java:68）。com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest（JettyServletEngineAdapter.java:97）上的apphosting.runtime.jetty9.AppVersionHandlerMap.getHandler（AppVersionHandlerMap.java:182）在com.google.apphosting.runtime.JavaRuntime $ RequestRunnable上。 com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.dispatchRequest（JavaRuntime.java:642）上的com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.run（JavaRuntime.java:612）上的dispatchServletRequest（JavaRuntime.java:680）在com.google.apphosting.runtime.ThreadGroupPool $ PoolEntry.run（ThreadGroupPool.java:274）在com.google.apphosting.runtime.ThreadGroupPool $ PoolEntry.run（ThreadGroupPool.java:274）在com.google.apphosting.runtime.JavaRuntime $ NullSandboxRequestRunnable.run（JavaRuntime.java （线程.java：745）182），com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest（JettyServletEngineAdapter.java:97），com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.dispatchServletRequest（JavaRuntime.java:680），com.google.apphosting com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.run（JavaRuntime.java:612）上的.runtime.JavaRuntime $ RequestRunnable.dispatchRequest（JavaRuntime.java:642），com.google.apphosting.runtime.JavaRuntime $ NullSandboxRequestRunnable.run （javaRuntime.java:806）在com.google.apphosting.runtime.ThreadGroupPool $ PoolEntry.run（ThreadGroupPool.java:274）在java.lang.Thread.run（Thread.java:745）182），com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest（JettyServletEngineAdapter.java:97），com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.dispatchServletRequest（JavaRuntime.java:680），com.google.apphosting com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.run（JavaRuntime.java:612）上的.runtime.JavaRuntime $ RequestRunnable.dispatchRequest（JavaRuntime.java:642），com.google.apphosting.runtime.JavaRuntime $ NullSandboxRequestRunnable.run （javaRuntime.java:806）在com.google.apphosting.runtime.ThreadGroupPool $ PoolEntry.run（ThreadGroupPool.java:274）在java.lang.Thread.run（Thread.java:745）com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.dispatchRequest（JavaRuntime.java:642）上的JavaRuntime $ RequestRunnable.dispatchServletRequest（JavaRuntime.java:680）com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.run（JavaRuntime。 java：612），位于com.google.apphosting.runtime.JavaRuntime $ NullSandboxRequestRunnable.run（JavaRuntime.java:806），位于com.google.apphosting.runtime.ThreadGroupPool $ PoolEntry.run（ThreadGroupPool.java:274）， .Thread.run（Thread.java:745）com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.dispatchRequest（JavaRuntime.java:642）上的JavaRuntime $ RequestRunnable.dispatchServletRequest（JavaRuntime.java:680）com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.run（JavaRuntime。 java：612），位于com.google.apphosting.runtime.JavaRuntime $ NullSandboxRequestRunnable.run（JavaRuntime.java:806），位于com.google.apphosting.runtime.ThreadGroupPool $ …
我正在尝试使用Objectify v4在App Engine中获取实体,但它不起作用.
我的@Entity:
@Entity
public class Translation {
@Id
private Long id;
private String text;
public String getText() {
return text;
}
public Long getId() {
return id;
}
public void setText(String text) {
this.text = text;
}
}
不说的请求:
Translation translation =ObjectifyService.ofy().load().type(Translation.class).id(301L).get(); // translation is null
但如果我这样做:
Translation translation = ObjectifyService.ofy().load().type(Translation.class).first().get(); // translation is not null
然后:
System.out.println(translation.getId()); // translation id equal 301
所以id的fetch似乎不起作用.问题出在哪儿？