我有两个项目:父项目:A,子项目:B
A/pom.xml中:
<groupId>com.dummy.bla</groupId>
<artifactId>parent</artifactId>
<version>0.1-SNAPSHOT</version>
<packaging>pom</packaging>
在B/pom.xml中,我有:
<parent>
<groupId>com.dummy.bla</groupId>
<artifactId>parent</artifactId>
<version>0.1-SNAPSHOT</version>
</parent>
<groupId>com.dummy.bla.sub</groupId>
<artifactId>kid</artifactId>
我希望B从父级继承该版本,所以我需要放置的唯一位置0.1-SNAPSHOT是A/pom.xml.但是,如果删除了<version>0.1-SNAPSHOT</version>从B/pom.xml下父节,Maven的抱怨缺少的版本父.
有没有办法可以使用${project.version}或类似的东西,以避免01.-SNAPSHOT在两个poms？
我有一个课程如下:
public class A {
public A(String test) {
bla bla bla
}
public String check() {
bla bla bla
}
}
在构造函数中的逻辑A(String test)和check()是我试图嘲弄的事情.我想要任何调用:new A($$$any string$$$).check()返回一个虚拟字符串"test".
我试过了:
A a = mock(A.class);
when(a.check()).thenReturn("test");
String test = a.check(); // to this point, everything works. test shows as "tests"
whenNew(A.class).withArguments(Matchers.anyString()).thenReturn(rk);
// also tried:
//whenNew(A.class).withParameterTypes(String.class).withArguments(Matchers.anyString()).thenReturn(rk);
new A("random string").check(); // this doesn't work
但它似乎没有奏效.new A($$$any string$$$).check()仍然通过构造函数逻辑而不是获取模拟对象A.
我想使用jackson将ArrayList转换为JsonArray.
Event.java:这是java bean类,有两个字段"field1","field2"映射为JsonProperty.
我的目标是:
兑换
ArrayList<Event> list = new ArrayList<Event>();
list.add(new Event("a1","a2"));
list.add(new Event("b1","b2"));
至
[
{"field1":"a1", "field":"a2"},
{"field1":"b1", "field":"b2"}
]
我能想到的是: writeListToJsonArray():
public void writeListToJsonArray() throws IOException {
ArrayList<Event> list = new ArrayList<Event>();
list.add(new Event("a1","a2"));
list.add(new Event("b1","b2"));
OutputStream out = new ByteArrayOutputStream();
JsonFactory jfactory = new JsonFactory();
JsonGenerator jGenerator = jfactory.createJsonGenerator(out, JsonEncoding.UTF8);
ObjectMapper mapper = new ObjectMapper();
jGenerator.writeStartArray(); // [
for (Event event : list) {
String e = mapper.writeValueAsString(event);
jGenerator.writeRaw(usage);
// here, big hassles to write …无论如何你可以使用sed像java正则表达式模式/匹配/组一样做正则表达式匹配组吗？
如果我有字符串
test-artifact-201251-balbal-0.1-SNAPSHOT.jar
我如何使用sed只是为了得到如下结果:
test-artifact-0.1-SNASHOT.jar
我想知道sed允许你做一些像java正则表达式的东西,你定义的模式如下:
([a-z]*-[a-z]*-)([0-9]*-)([a-z]*-)([.]*SNAPSHOT.jar)
然后你可以得到如下数组的结果:
test-artifact-
201251-
balbal-
0.1-SNAPSHOT.jar
有谁知道我的maven构建发生了什么？我收到了很多重复的警告.
[WARNING] We have a duplicate org/apache/commons/logging/impl/LogFactoryImpl$1.class in /home/shengjie/.m2/repository/commons-logging/commons-logging-api/1.0.4/commons-logging-api-1.0.4.jar
[WARNING] We have a duplicate org/apache/commons/logging/impl/LogFactoryImpl.class in /home/shengjie/.m2/repository/commons-logging/commons-logging-api/1.0.4/commons-logging-api-1.0.4.jar
[WARNING] We have a duplicate org/apache/commons/logging/impl/NoOpLog.class in /home/shengjie/.m2/repository/commons-logging/commons-logging-api/1.0.4/commons-logging-api-1.0.4.jar
[WARNING] We have a duplicate org/apache/commons/logging/impl/SimpleLog$1.class in /home/shengjie/.m2/repository/commons-logging/commons-logging-api/1.0.4/commons-logging-api-1.0.4.jar
[WARNING] We have a duplicate org/apache/commons/logging/impl/SimpleLog.class in /home/shengjie/.m2/repository/commons-logging/commons-logging-api/1.0.4/commons-logging-api-1.0.4.jar
[WARNING] We have a duplicate org/apache/commons/logging/impl/Jdk14Logger.class in /home/shengjie/.m2/repository/commons-logging/commons-logging-api/1.0.4/commons-logging-api-1.0.4.jar
我查看了我当地的m2 repo,我在commons-logging-api jar,LogFactoryImpl.class和LogFactoryImpl $ 1.class中有两个类.与警告中提到的所有类相同.
有一点需要提一下,我在我的pom.xml中使用了shade插件.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.4</version>
<configuration>
<createDependencyReducedPom>true</createDependencyReducedPom>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers> …我知道lambda没有返回表达式.一般
def one_return(a):
#logic is here
c = a + 1
return c
可写:
lambda a : a + 1
怎么样在lambda函数中写这个:
def two_returns(a, b):
# logic is here
c = a + 1
d = b * 1
return c, d
我的日食是Indigo Java classic.
我有一个java项目,它有mockito-all作为依赖项.pom.xml中:
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.8.5</version>
<scope>test</scope>
</dependency>
跑mvn clean install,一切都好.然后我做mvn eclipse:eclipse了解决Eclipse中的所有依赖项.
当我尝试在eclipse中运行Junit时,它不会运行并给我这个错误:
'Launching YourTest' has encountered a problem.
The archive: /home/shengjie/.m2/repository/org/mockito/mockito-all/1.9.5.jar which is referenced by the classpath, does not exist.
我的项目pom.xml声称它取决于mockito-all 1.8.5,我不确定1.9.5引用的来源.有任何想法吗？
== ==编辑
$ mvn dependency:tree | grep mockito
[INFO] +- org.mockito:mockito-all:jar:1.8.5:test
[INFO] \- org.powermock:powermock-api-mockito:jar:1.4.12:test
[INFO] \- org.powermock:powermock-api-mockito:jar:1.4.12:test
[INFO] +- org.mockito:mockito-all:jar:1.8.5:test (version managed from 1.9.0)
[INFO] | +- org.mockito:mockito-all:jar:1.8.5:test (version managed from 1.9.5; scope managed from compile)
[INFO] | +- org.mockito:mockito-all:jar:1.8.5:test (version …注释可以具有复杂的返回类型,例如HashMap.
我正在寻找类似的东西:
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface column {
public HashMap<String, String> table();
}
所以我可以有一个常量注释(伪代码):
@column({table=(dbName, tableName), table=(dbName, tableName2)})
public static final String USER_ID = "userid";
如果Annotation不允许你有复杂的返回类型,那么对于这种情况有什么好的做法吗？
在Java中,如果您确定某个文件非常小,您可以使用readBytes()方法一次性读取内容,而不是逐行读取或使用缓冲区.
只是想知道shell脚本,我知道我们可以这样做:
while read line
do
echo $line
LINE = $line
done < "test.file"
echo $LINE
如果我的test.file是这样的:
testline1
testline2
testline3
这只给了我最后一行$LINE.$LINE包含"testline3".
我的问题是:如何将多行读入整个文件放入一个变量中,这样我才能得到$LINE="testline1\ntestline2\ntestline3"？
我有一个DummyResource类和一个DummyTarget文件,以及一个测试类TestDummyResource,如下所示,但是DummyResource dr = mock(DummyResource.class)当我在普通类中调用构造函数时,模拟对象才起作用,当它在匿名类中调用时,它调用实际的构造函数而不是使用被模拟的对象.
版本:
powermock 1.4.12 mockito 1.9.0 junit 4.8.2
DummyTarget.java:
import java.io.IOException;
import java.io.OutputStream;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.StreamingOutput;
public class DummyTarget {
public StreamingOutput testMocking() {
return new StreamingOutput() {
@Override
public void write(OutputStream arg0) throws IOException, WebApplicationException {
new DummyResource();
}
};
}
}
DummyResource.java:
package com.smin.dummy;
public class DummyResource {
public DummyResource() {
System.out.println("mock failure");
}
}
TestDummyResource.java:
package com.smin.dummy;
import static org.mockito.Mockito.mock;
import java.io.IOException;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.StreamingOutput;
import org.junit.Before;
import org.junit.Test;
import …