我有一个Eclipse E4应用程序，该应用程序已经由Tycho构建。现在，我们正在迁移使用Java 12的应用程序。因此，我们还需要更新目标文件。
最新目标文件看起来像：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?pde version="3.8"?>
<target includeMode="feature" name="Running Platform">
<locations>
<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
<repository location="http://download.eclipse.org/nattable/releases/1.5.0/repository/"/>
<unit id="org.eclipse.nebula.widgets.nattable.core.feature.feature.group" version="1.5.0.201703192131"/>
<unit id="org.eclipse.nebula.widgets.nattable.extension.e4.feature.feature.group" version="1.1.0.201703192131"/>
<unit id="org.eclipse.nebula.widgets.nattable.extension.glazedlists.feature.feature.group" version="1.5.0.201703192131"/>
<unit id="org.eclipse.nebula.widgets.nattable.extension.nebula.feature.feature.group" version="1.1.0.201703192131"/>
<unit id="org.eclipse.nebula.widgets.nattable.extension.poi.feature.feature.group" version="1.5.0.201703192131"/>
</location>
<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
<repository location="http://download.eclipse.org/releases/2019-06/"/>
<unit id="org.eclipse.equinox.sdk.feature.group" version="3.18.0.v20190528-1257"/>
<unit id="org.eclipse.platform.sdk" version="4.12.0.I20190605-1800"/>
</location>
<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
<repository location="http://download.eclipse.org/nebula/releases/latest"/>
<unit id="org.eclipse.nebula.widgets.pshelf.css.feature.feature.group" version="1.0.0.201812241324"/>
<unit id="org.eclipse.nebula.widgets.pshelf.feature.feature.group" version="1.0.0.201812241324"/>
</location>
</locations>
<environment>
<arch>x86_64</arch>
<os>win32</os>
<ws>win32</ws>
<nl>en_US</nl>
</environment>
</target>
当我们使用jenkins使用tycho运行构建时，我们会得到以下错误：
[INFO] Fetching p2.index from http://download.eclipse.org/nattable/releases/1.5.0/repository/
[INFO] Fetching p2.index from http://download.eclipse.org/nattable/releases/1.5.0/repository/
[INFO] Adding repository http://download.eclipse.org/nattable/releases/1.5.0/repository
[INFO] Fetching p2.index from http://download.eclipse.org/releases/2019-06/
[INFO] Fetching p2.index from http://download.eclipse.org/releases/2019-06/
[INFO] Adding repository http://download.eclipse.org/releases/2019-06
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.eclipse.ecf.provider.filetransfer.httpclient4.SNIAwareHttpClient$1 (file:/C:/Users/PTITDevTools_svc/.m2/repository/org/eclipse/tycho/tycho-bundles-external/1.1.0/eclipse/plugins/org.eclipse.ecf.provider.filetransfer.httpclient4_1.1.200.v20170314-0133.jar) to method sun.security.ssl.SSLSocketImpl.setHost(java.lang.String)
WARNING: Please consider reporting this to the maintainers of org.eclipse.ecf.provider.filetransfer.httpclient4.SNIAwareHttpClient$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[ERROR] Failed to resolve target definition D:Softwarex64Jenkinsworkspaceture_ILMV-490-migrate-to-java-12neonneon.target: Failed to load p2 metadata repository from location http://download.eclipse.org/releases/2019-06/: Unable to read repository at http://download.eclipse.org/releases/2019-06. Unable to read repository at https://download.eclipse.org/technology/epp/packages/2019-06/content.xml. Connection reset -> [Help 1]
使用我们的旧目标文件，构建正在工作，但旧文件是PDE目标文件。有人可以告诉我为什么失败吗？
eclipse p2 repo的URL不够具体。我将http://download.eclipse.org/releases/2019-06/更改为http://download.eclipse.org/releases/2019-06/201906191000