编译 snap-1 编译 snap-2我正在尝试将我的项目从 java 1.8 升级到版本 13.0.2。我删除了一些不受支持的功能。不幸的是toInstant()就是其中之一。我的项目在这样的 java 模块中使用它：
Date date = format.parse(inputDate);
finalDate = date.toInstant().toString();
现在我无法使用 JDK 13 使用 toInstant() 编译代码，因为它说“找不到符号”并且发生编译错误：
[ERROR] cannot find symbol
[ERROR] symbol: method toInstant()
[ERROR] location: variable date of type java.util.Date
[ERROR] -> [Help 1]
所以我寻找了几个 toInstant() 的代码替换，并决定通过使用 java.time 中的几个函数来摆脱它。但是编译时找不到java.time：
package java.time does not exist
这是否表示我的 JDK 设置有问题？除了这个问题，我没有面临任何其他问题。 错误快照
编译错误：
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project XXXX: Compilation failure
/C:/utilities1/New folder/XXXX/src/main/java/com/XXXX/test.java:[167,52] cannot find symbol
symbol: method toInstant()
location: variable date of type java.util.Date
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:567)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: org.apache.maven.plugin.compiler.CompilationFailureException: Compilation failure
/C:/utilities1/New folder/XXXX/src/main/java/com/XXXX/test.java:[167,52] cannot find symbol
symbol: method toInstant()
location: variable date of type java.util.Date
at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute (AbstractCompilerMojo.java:1215)
at org.apache.maven.plugin.compiler.CompilerMojo.execute (CompilerMojo.java:188)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:567)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
POM.XML：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tscsoftware</groupId>
<artifactId>TSCWebApp</artifactId>
<version>13.0.2</version>
<packaging>jar</packaging>
<name>TSC Web Application</name>
<description>The TSC Web Application</description>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<web-context-root>C:\Web\dev</web-context-root>
<java.version>13</java.version>
<maven.compiler.target>3.6.3</maven.compiler.target>
<maven.compiler.source>3.6.3</maven.compiler.source>
<maven.compiler.release>7</maven.compiler.release>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<release>7</release>
<source>8</source>
<target>8</target>
<compilerArgument>-Xlint:all</compilerArgument>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<webappDirectory>${web-context-root}</webappDirectory>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>ext-release-local</id>
<url>http://erp.maven.srb-es.com:8081/artifactory/ext-release-local</url>
</repository>
</repositories>
<dependencies>
<!-- http://mvnrepository.com/artifact/com.google.code.gson/gson -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.6.2</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>19.0</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-email</artifactId>
<version>1.3.3</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.att.speech</groupId>
<artifactId>ATTJSAPI</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.axis.tools</groupId>
<artifactId>axis-ant</artifactId>
<version>1.4</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.axis</groupId>
<artifactId>axis</artifactId>
<version>1.4</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.7.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.commons.discovery</groupId>
<artifactId>commons-discovery</artifactId>
<version>0.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.commons.fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.commons.lang</groupId>
<artifactId>commons-lang</artifactId>
<version>1.0.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.enterprisedt.net.ftp</groupId>
<artifactId>edtftpj</artifactId>
<version>1.5.3</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.lowagie.text</groupId>
<artifactId>itext</artifactId>
<version>1.02b</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.lowagie.text.xml</groupId>
<artifactId>iTextXML</artifactId>
<version>1.02b</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>jaxen</groupId>
<artifactId>jaxen</artifactId>
<version>1.1-beta-9</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.xml.rpc</groupId>
<artifactId>jaxrpc</artifactId>
<version>1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.xml.ws</groupId>
<artifactId>jaxws-api</artifactId>
<version>2.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.security.cert</groupId>
<artifactId>jcert</artifactId>
<version>1.0.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.samba.jcifs</groupId>
<artifactId>jcifs</artifactId>
<version>1.1.11</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.jrefinery</groupId>
<artifactId>jcommon</artifactId>
<version>0.7.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>jdom</groupId>
<artifactId>jdom</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.jfree.chart</groupId>
<artifactId>jfreechart</artifactId>
<version>1.0.19</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.jfree</groupId>
<artifactId>jcommon</artifactId>
<version>1.0.23</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.net</groupId>
<artifactId>jnet</artifactId>
<version>1.0.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.net.ssl</groupId>
<artifactId>jsse</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.12.1</version>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.makarosoft.monitor.agent</groupId>
<artifactId>MonitorAgentClient</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.pf</groupId>
<artifactId>pf</artifactId>
<version>2.3.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>pv.jfcx</groupId>
<artifactId>pvxedits</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.xml.soap</groupId>
<artifactId>saaj-api</artifactId>
<version>1.3</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.sun.xml.messaging.saaj</groupId>
<artifactId>saaj-impl</artifactId>
<version>1.3</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.xml</groupId>
<artifactId>serializer</artifactId>
<version>2.7.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
<version>1.2.6</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>stax</groupId>
<artifactId>stax-api</artifactId>
<version>1.0.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.tscsoftware.terminalEmulator.ticket</groupId>
<artifactId>teTicket</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.tscsoftware.tmqnotifier</groupId>
<artifactId>TMQNotifier</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.tscsoftware.terminalEmulator</groupId>
<artifactId>tsc_ate</artifactId>
<version>1.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>wsdl4j</groupId>
<artifactId>wsdl4j</artifactId>
<version>1.6.1</version>
<scope>compile</scope>
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<dependency>
<groupId>org.codehaus.woodstox</groupId>
<artifactId>wstx-asl</artifactId>
<version>3.2.0</version>
<scope>compile</scope>
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<dependency>
<groupId>xalan</groupId>
<artifactId>xalan</artifactId>
<version>2.7.1</version>
<scope>compile</scope>
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<dependency>
<groupId>xmlbeans</groupId>
<artifactId>xbean</artifactId>
<version>2.2.0</version>
<scope>compile</scope>
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<dependency>
<groupId>org.apache.xbean</groupId>
<artifactId>xbean-spring</artifactId>
<version>2.8</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>xerces</groupId>
<artifactId>xercesImpl</artifactId>
<version>2.9.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.codehaus.xfire</groupId>
<artifactId>xfire-aegis</artifactId>
<version>1.2.6</version>
<scope>compile</scope>
<exclusions>
<exclusion>
<groupId>net.java.dev.stax-utils</groupId>
<artifactId>stax-utils</artifactId>
</exclusion>
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</dependency>
<dependency>
<groupId>org.codehaus.xfire</groupId>
<artifactId>xfire-annotations</artifactId>
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<scope>compile</scope>
<exclusions>
<exclusion>
<groupId>commons-attributes</groupId>
<artifactId>commons-attributes-api</artifactId>
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<exclusion>
<groupId>ant</groupId>
<artifactId>ant</artifactId>
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<exclusion>
<groupId>qdox</groupId>
<artifactId>qdox</artifactId>
</exclusion>
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<dependency>
<groupId>org.codehaus.xfire</groupId>
<artifactId>xfire-core</artifactId>
<version>1.2.6</version>
<scope>compile</scope>
<exclusions>
<exclusion>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.codehaus.xfire</groupId>
<artifactId>xfire-java5</artifactId>
<version>1.2.6</version>
<scope>compile</scope>
<exclusions>
<exclusion>
<groupId>xfire</groupId>
<artifactId>xfire-jsr181-api</artifactId>
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</exclusions>
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<dependency>
<groupId>org.codehaus.xfire</groupId>
<artifactId>xfire-jaxws</artifactId>
<version>1.2.6</version>
<scope>compile</scope>
<exclusions>
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<artifactId>xfire-jaxb2</artifactId>
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<exclusion>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-xjc</artifactId>
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<dependency>
<groupId>xfire</groupId>
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<classifier>M1</classifier>
<scope>compile</scope>
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<version>1.2.6</version>
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<exclusions>
<exclusion>
<groupId>org.codehaus.xfire</groupId>
<artifactId>xfire-xmlbeans</artifactId>
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<groupId>org.apache.xmlcommons</groupId>
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<dependency>
<groupId>org.apache.ws.commons</groupId>
<artifactId>XmlSchema</artifactId>
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<dependency>
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<scope>compile</scope>
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<dependency>
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<version>2.4</version>
<scope>compile</scope>
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<dependency>
<groupId>com.borland.jbcl.layout</groupId>
<artifactId>jbcl</artifactId>
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<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
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<dependency>
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<dependency>
<groupId>org.codehaus.jackson</groupId>
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<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-xc</artifactId>
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<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>1.12</version>
<scope>compile</scope>
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<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>1.12</version>
<scope>compile</scope>
<exclusions>
<exclusion>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
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<exclusion>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.xml.stream</groupId>
<artifactId>stax-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-servlet</artifactId>
<version>1.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.codehaus.jettison</groupId>
<artifactId>jettison</artifactId>
<version>1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>jsr311-api</artifactId>
<version>1.1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>jsch</groupId>
<artifactId>jsch</artifactId>
<version>0.1.51</version>
<scope>compile</scope>
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<dependency>
<!-- jsoup HTML parser library @ http://jsoup.org/ -->
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.14.2-Atrieve</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.12.1</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-web</artifactId>
<version>2.12.1</version>
</dependency>
</dependencies>
</project>