小编mko*_*bit的帖子

我有点困惑.我无法在任何地方找到答案;(

我有一个String数组:

String[] arr = ["1", "2", "3"];

然后我将它转换为字符串:

String str = Arrays.toString(arr);
System.out.println(str);

我期望得到字符串"123",但我得到了字符串"[1,2,3]".

我怎么能在java中做到这一点？我正在使用Eclipse IDE

大家好,感谢您的关注!我有一个既容易又明显的问题,但我被卡住了.

我想通过自定义ClassLoader提供动态创建的Java类,供第三方库使用.

现在我的问题是:当我不自己直接加载这些类时,如何设置我的自定义ClassLoader来加载这些类？

我想当我使用我的ClassLoader加载某个类时,它就变成了这个类的ClassLoader,并且从该类加载的所有类都将通过我的ClassLoader引导.

我按照这个官方教程创建了一个自定义的ClassLoader:http://java.sun.com/developer/onlineTraining/Security/Fundamentals/magercises/ClassLoader/help.html.

public class DynamicClassloader extends ClassLoader {

    private Map<String, Class<?>> classesMap = new HashMap<String, Class<?>>();

    public DynamicClassloader(ClassLoader parent) {
        // Also tried super(parent);
        super(sun.misc.Launcher.getLauncher().getClassLoader());
    }

    // Adding dynamically created classes
    public void defineClass(String name, Class<?> clazz) {
        classesMap.put(name, clazz);
    }

    @Override
    protected Class<?> findClass(String name) throws ClassNotFoundException {
        // load from parent
        Class<?> result = findLoadedClass(name);
        if (result != null) {
            return result;
        }
        try {
            result = findSystemClass(name);
        } catch (Exception …

正如标题所述,我想知道如何修改它gradle.build.kts以便创建一个独特jar的所有依赖项(包括kotlin lib)的任务.

我在Groovy中找到了这个示例:

//create a single Jar with all dependencies
task fatJar(type: Jar) {
    manifest {
        attributes 'Implementation-Title': 'Gradle Jar File Example',
            'Implementation-Version': version,
            'Main-Class': 'com.mkyong.DateUtils'
    }
    baseName = project.name + '-all'
    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
    with jar
}

但我不知道如何在kotlin中写出来,除了:

task("fatJar") {

}

我在项目pom.xml中添加了jetty mvn插件代码.

<plugin>
  <groupId>org.mortbay.jetty</groupId>
  <artifactId>maven-jetty-plugin</artifactId>
  <version>6.1.26</version>
  <configuration>
    <contextPath>/redkites</contextPath>
  </configuration>
  <executions>
    <execution>
      <id>start-jetty</id>
      <phase>deploy</phase>
      <goals>
        <goal>run</goal>
      </goals>
      <configuration>
        <scanIntervalSeconds>10</scanIntervalSeconds>
        <daemon>true</daemon>
      </configuration>
    </execution>
  </executions>
</plugin>

当我使用命令sudo mvn compile和sudo mvn clean install,我没有发现任何错误和成功建立,但是当我键入命令sudo mvn jetty:run,我得到一个错误:

[ERROR] No plugin found for prefix 'jetty' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (/root/.m2/repository), central (http://repo.maven.apache.org/maven2)] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with …

以下是我的用例:我有一个带有散列+范围键的Dynamo表.当我在表中放入新项目时,我想进行唯一性检查.有时我想保证散列是唯一的(忽略范围).其他时候我想允许重复哈希,但保证哈希和范围组合是唯一的.我怎么能做到这一点？

我尝试了attribute_not_exists.它似乎处理第二种情况,它检查哈希+键组合.这是一个PHP示例:

$client->putItem(array(
    'TableName' => 'test',
    'Item' => array(
        'hash' => array('S' => 'abcdefg'),
        'range' => array('S' => 'some other value'),
        'whatever' => array('N' => 233)
    ),
    'ConditionExpression' => 'attribute_not_exists(hash)'
));

奇怪的是,如果我使用attribute_not_exists(hash)或者似乎并不重要attribute_not_exists(range).他们似乎都做了完全相同的事情.这是它应该如何工作？

知道如何处理我只想检查hash唯一性的情况吗？

目标
在同一节点上运行声明性Jenkins管道的多个阶段.

设置
这只是一个显示问题的最小示例.有2个Windows节点"windows-slave1"和"windows-slave2"都标有"windows"标签.

注意:我真正的Jenkinsfile不能使用全局代理,因为有一些阶段需要在不同的节点上运行(例如Windows与Linux).

预期行为
Jenkins根据标签选择"Stage 1"中的一个节点,并在"Stage 2"中使用相同的节点,因为变量windowsNode已更新为"Stage 1"中选择的节点.

实际行为
"阶段2"有时在与"阶段1"相同的节点上运行,有时在不同的节点上运行.请参阅下面的输出.

Jenkinsfile

#!groovy

windowsNode = 'windows'

pipeline {
  agent none
  stages {
    stage('Stage 1') {
      agent {
        label windowsNode
      }
      steps {
        script {
          // all subsequent steps should be run on the same windows node
          windowsNode = NODE_NAME
        }
        echo "windowsNode: $windowsNode, NODE_NAME: $NODE_NAME"
      }
    }
    stage('Stage 2') {
      agent {
        label windowsNode
      }
      steps {
        echo "windowsNode: $windowsNode, NODE_NAME: $NODE_NAME"
      }
    }
  }
}

产量 …

嗨,我在运行JaCoCo报道时遇到以下异常:

    <plugin>
        <groupId>org.jacoco</groupId>
        <artifactId>jacoco-maven-plugin</artifactId>
        <version>0.5.8.201207111220</version>
        <executions>
            <execution>
                <goals>
                    <goal>prepare-agent</goal>
                </goals>
            </execution>
            <execution>
                <id>report</id>
                <phase>prepare-package</phase>
                <goals>
                    <goal>report</goal>
                </goals>
            </execution>
        </executions>
    </plugin>

Error while creating report: Can't add different class with same name: org/hamcrest/BaseDescription
java.lang.IllegalStateException: Can't add different class with same name: org/hamcrest/BaseDescription
    at org.jacoco.core.analysis.CoverageBuilder.visitCoverage(CoverageBuilder.java:89)
    at org.jacoco.core.analysis.Analyzer$1.visitEnd(Analyzer.java:79)
    at org.objectweb.asm.ClassAdapter.visitEnd(Unknown Source)
    at org.jacoco.core.internal.flow.ClassProbesAdapter.visitEnd(ClassProbesAdapter.java:128)
    at org.objectweb.asm.ClassReader.accept(Unknown Source)
    at org.objectweb.asm.ClassReader.accept(Unknown Source)
    at org.jacoco.core.analysis.Analyzer.analyzeClass(Analyzer.java:94)
    at org.jacoco.core.analysis.Analyzer.analyzeClass(Analyzer.java:115)
    at org.jacoco.core.analysis.Analyzer.analyzeAll(Analyzer.java:155)
    at org.jacoco.core.analysis.Analyzer.analyzeArchive(Analyzer.java:135)
    at org.jacoco.core.analysis.Analyzer.analyzeAll(Analyzer.java:158)
    at org.jacoco.core.analysis.Analyzer.analyzeAll(Analyzer.java:183)
    at org.jacoco.maven.ReportMojo.createBundle(ReportMojo.java:280)
    at org.jacoco.maven.ReportMojo.createReport(ReportMojo.java:256)
    at org.jacoco.maven.ReportMojo.executeReport(ReportMojo.java:230)
    at org.jacoco.maven.ReportMojo.execute(ReportMojo.java:208)
    at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694) …

尝试编写一个使用RegEx来验证项目值的JSON模式.

有一个名为progBinaryName的项目,其值应该与此RegEx字符串相同"^[A-Za-z0-9 -_]+_Prog\\.(exe|EXE)$".

找不到任何实际解释在JSON模式中使用RegEx的教程或示例.

任何帮助/信息将非常感谢!

感谢:D

JSON SCHEMA

{
    "name": "string",
    "properties": {
        "progName": {
            "type": "string",
            "description": "Program Name",
            "required": true
        },
        "ID": {
            "type": "string",
            "description": "Identifier",
            "required": true
        },
        "progVer": {
            "type": "string",
            "description": "Version number",
            "required": true
        },
        "progBinaryName": {
            "type": "string",
            "description": "Actual name of binary",
            "patternProperties": {
                "progBinaryName": "^[A-Za-z0-9 -_]+_Prog\\.(exe|EXE)$"
            },
            "required": true
        }
    }
}

错误:

警告!更好地检查你的JSON.

实例不是必需的类型 - http://json-schema.org/draft-03/hyper-schema#

架构是有效的JSON,但不是有效的架构.

验证结果:失败

[ {
    "level" : "warning",
    "schema" : …

我在java类中遇到解密错误:

javax.crypto.IllegalBlockSizeException : 
    Input length must be multiple of 16 when decrypting with padded cipher.

我该怎么做才能解决这个问题？

更新:

我忘了提到它工作一次,当第二次我试图再次执行它时抛出上述错误.

package com.tb.module.service;
import java.security.Key;
import java.security.spec.InvalidKeySpecException;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

import sun.misc.*;

/**
 * This class is used for encrypt and decrypt the  password field.
 *
 */
public class PswdEnc {

    private static final String ALGO = "AES";
    private static final byte[] keyValue = new byte[] { 'T', 'h', 'e', 'B', 'e', 's', 't','S', 'e', 'c', 'r','e', 't', 'K', 'e', 'y' }; …

我@NonCPS在我的Jenkinsfile函数前面使用它执行正则表达式匹配,java.io.NotSerializableException java.util.regex.Matcher即使使用@NonCPS注释我仍然会收到错误.

注意,它多次调用该函数,只有在实际匹配时才会发生异常.

这是我的代码:

@NonCPS
def extractEndTime(logLine) {
    def MY_REGEX = /.*(20[0-9]{2}-[0-9]{2}-[0-9]{2}).([0-9]{2}:[0-9]{2}:[0-9]{2}).*\"\w+\"\sthe text\s(\w+)\./
    m = (logLine =~ TEST_LOGLINE_END_REGEX)
    if (m.count) {
        return [m[1],m[2],m[3]]
    } else {
        return null
    }
}

进行jenkins构建时的输出:

GitHub has been notified of this commit’s build result
java.io.NotSerializableException: java.util.regex.Matcher
    at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:860)
    at org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65)
    at org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56)
    at org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50)
    at org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
    at java.util.LinkedHashMap.internalWriteEntries(LinkedHashMap.java:333)
    at java.util.HashMap.writeObject(HashMap.java:1354)
    at sun.reflect.GeneratedMethodAccessor116.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:271)
    at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:976)
    at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
    at …