在Java中构建完整未来的最佳方法是什么？我已经CompletedFuture在下面实现了自己,但希望这样的东西已经存在.
public class CompletedFuture<T> implements Future<T> {
private final T result;
public CompletedFuture(final T result) {
this.result = result;
}
@Override
public boolean cancel(final boolean b) {
return false;
}
@Override
public boolean isCancelled() {
return false;
}
@Override
public boolean isDone() {
return true;
}
@Override
public T get() throws InterruptedException, ExecutionException {
return this.result;
}
@Override
public T get(final long l, final TimeUnit timeUnit) throws InterruptedException, ExecutionException, TimeoutException {
return get();
}
}
我正在尝试使用Mockito 1.8.5存根方法,但这样做会调用真正的方法实现(使用""作为parm值)会抛出异常.
package background.internal; //located in trunk/tests/java/background/internal
public class MoveStepTest {
@Test
public void testMoveUpdate() {
final String returnValue = "value";
final FileAttachmentContainer file = mock(FileAttachmentContainer.class);
doReturn(returnValue).when(file).moveAttachment(anyString(), anyString(), anyString());
//this also fails
//when(file.moveAttachment(anyString(), anyString(), anyString())).thenReturn(returnValue);
final AttachmentMoveStep move = new AttachmentMoveStep(file);
final Action moveResult = move.advance(1, mock(Context.class));
assertEquals(Action.done, moveResult);
}
}
我试图模拟的方法看起来像这样.没有最终的方法或类.
package background.internal; //located in trunk/src/background/internal
public class FileAttachmentContainer {
String moveAttachment(final String arg1, final String arg2, final String arg3)
throws CustomException {
...
}
String getPersistedValue(final Context context) …是否有一种替代Guava Tables,它使用基元而不是泛型类型作为键？
我想使用原语来避免因使用Java Numbers和Java Maps创建的其他入口对象而导致的自动装箱.
我使用Trove TLongObjectMap编译了我自己的基本LongLongObjectTable ,但是如果有可用的话,我更愿意使用标准库.
private static class LongLongObjectTable<T> {
private final TLongObjectMap<TLongObjectMap<T>> backingMap = new TLongObjectHashMap<>();
T get(final long rowKey, final long columnKey) {
final TLongObjectMap<T> map = this.backingMap.get(rowKey);
if (map == null) {
return null;
}
return map.get(columnKey);
}
void put(final long rowKey, final long columnKey, final T value) {
TLongObjectMap<T> map = this.backingMap.get(rowKey);
if (map == null) {
map = new TLongObjectHashMap<>();
this.backingMap.put(rowKey, map);
}
map.put(columnKey, value);
}
Collection<T> values() …将两个地图组合成Java中的单个Guava MultiMap的最佳方法是什么？
例如:
然后生成的组合多图将包含
这是我目前的解决方案:
Multimap<T, K> combineMaps(Map<T, K> map1, Map<T, K> map2) {
Multimap<T, K> multimap = new MultiMap();
for (final Map.Entry<T, K> entry : map1.entrySet()) {
multimap.put(entry.getKey(), entry.getValue());
}
for (final Map.Entry<T, K> entry : map2.entrySet()) {
multimap.put(entry.getKey(), entry.getValue());
}
return multimap;
}
我正在使用Rest Assured测试REST api.尝试使用url和body内容中的参数进行POST时,我遇到了错误.这在手动测试时可以正常工作.从URL中删除参数不是一个选项
测试代码:
String endpoint = http://localhost:8080/x/y/z/id?custom=test;
String body = "[{\"boolField\":true,\"intField\":991},
{\"boolField\":false,\"intField\":998}]";
expect().spec(OK).given().body(body).post(endpoint);
运行时会抛出以下错误
You can either send parameters OR body content in the POST, not both!
java.lang.IllegalStateException: You can either send parameters OR body content in the POST, not both!
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.codehaus.groovy.reflection.CachedConstructor.invoke(CachedConstructor.java:77)
at org.codehaus.groovy.runtime.callsite.ConstructorSite$ConstructorSiteNoUnwrapNoCoerce.callConstructor(ConstructorSite.java:102)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:198)
at com.jayway.restassured.internal.RequestSpecificationImpl.sendRequest(RequestSpecificationImpl.groovy:282)
at com.jayway.restassured.internal.RequestSpecificationImpl.this$2$sendRequest(RequestSpecificationImpl.groovy)
at com.jayway.restassured.internal.RequestSpecificationImpl$this$2$sendRequest.callCurrent(Unknown Source)
at com.jayway.restassured.internal.RequestSpecificationImpl.post(RequestSpecificationImpl.groovy:83)
...
为什么Rest Assured不允许POST中的参数和正文内容？
我想从通道中读取所有可用元素，以便如果我的接收器比发送器慢，我可以对它们进行批处理（希望处理批处理将具有更高的性能并允许接收器赶上）。我只想在通道为空时挂起，而不是挂起直到我的批次已满或超时，这与这个问题不同。
标准 kotlin 库中是否内置了任何内容来实现此目的？
我是新手,我有这个:
public Builder id (String val)
{
id = val;
return this;
}
从下面if语句我想设置构建器id = 1ac.我怎样才能做到这一点.谢谢
if (blah blah)
{
id = "1ac";
}