标签: java-11

我有下面的字符串

String str="select * from m_menus;

select * from m_roles";

我希望上面的字符串在一行中像

String str="select * from m_menus;select * from m_roles";

我试过了

str1=str.replace("[\r\n]+", " "); 

并且

str1=str.replace("\n"," "); 

两者都不起作用.

我们的摇篮构建必须 --add-modules=java.xml.bind,java.activation,java.xml.ws.annotation要options.compilerArgs在JavaCompile建立与JDK9/10.这现在很好用,但这些模块已被弃用.

我想为可能删除这些模块的 JDK11做准备.

我曾尝试加入javax.xml.bind:jaxb-api:2.3.0,com.sun.xml.bind:jaxb-impl:2.3.0并com.sun.xml.bind:jaxb-core:2.3.0以compile和runtime,以及classpath在buildscript,但我仍然得到NoClassDefFoundError.

我错过了什么？

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':my-client:compileGroovy'.
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:103)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:73)
        at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
        at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
        at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
        at org.gradle.api.internal.tasks.execution.ResolveBuildCacheKeyExecuter.execute(ResolveBuildCacheKeyExecuter.java:66)
        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
        at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
        at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91)
        at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
        at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
        at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:256)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:317)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:309)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:185)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:97)
        at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
        at …

我设置了JDK 11,它编译直到我使用isBlank()String 的Java 11的新方法,当我使用该方法编译时出现此错误,我尝试清理JDK安装,从IntelliJ清除缓存,重建但没有任何帮助.错误是:

尝试从jdk 10切换到11并且无法确定哪个库调用此异常:

Caused by: org.gradle.api.GradleException: failed to read class file ../../SomeTestFile.class
...
...
Caused by: java.lang.UnsupportedOperationException
        at org.objectweb.asm.ClassVisitor.visitNestMemberExperimental(ClassVisitor.java:248)
        at org.objectweb.asm.ClassReader.accept(ClassReader.java:651)
        at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
        at org.gradle.api.internal.tasks.testing.detection.AbstractTestFrameworkDetector.classVisitor(AbstractTestFrameworkDetector.java:124)

我正在使用gradle包装器(v4.10.2),其中包括build.gradle:

buildscript {
    ext {
        springBootVersion = '2.0.5.RELEASE'
        schemaDownloadVersion = '1.6'
        generateAvroVersion = '0.14.2'
    }
    repositories {
        mavenCentral()
        maven { url "https://plugins.gradle.org/m2/" }
        maven { url "http://packages.confluent.io/maven/" }
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
        classpath("gradle.plugin.com.amit.plugin.download-registry:registry-schema-download-plugin:${schemaDownloadVersion}")
        classpath("com.commercehub.gradle.plugin:gradle-avro-plugin:${generateAvroVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'jacoco'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
apply plugin: 'com.amit.plugin.download-registry'
apply plugin: 'com.commercehub.gradle.plugin.avro' …

背景:我正在尝试使用此处的说明为Windows构建Hadoop .我有OpenJDK 11并在运行时遇到以下问题mvn package:

Could not resolve dependencies for project org.apache.hadoop:hadoop-annotations:jar:2.5.0-SNAPSHOT: Could not find artifact jdk.tools:jdk.tools:jar:1.6 at specified path C:\Program Files\Java\jdk-11.0.1\..\lib\tools.jar

我意识到tools.jarOpenJDK 11的Windows版本中不存在.我是否也必须从源代码构建它？如何获得tools.jarOpenJDK 11 的Maven文物？

AWS允许使用（Open JDK 8）作为运行时来创建Lambda函数。我需要使用创建一个简单的函数。像这样：Java 8Open JDK 11

package example;

import com.amazonaws.services.lambda.runtime.Context; 
import com.amazonaws.services.lambda.runtime.LambdaLogger;

public class Hello {
    public String myHandler(int myCount, Context context) {
        LambdaLogger logger = context.getLogger();
        logger.log("received : " + myCount);
        return String.valueOf(myCount);
    }
}