Java可执行Jar文件

我试图从eclipse（使用MySQL作为数据库）生成一个可执行的jar文件

如何生成可执行jar文件

我做了一个，但它显示了一些警告，不起作用。我收到一份长长的警告单。警告如下：

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文件->导出->可运行JAR文件

然后你们可以选择，你们是想把罐子复制到罐子里，还是干脆把它们拔出来

右键单击需要导出为jar的项目

从列表中选择“导出”选项

从新弹出窗口中，选择“可运行jar文件”

单击“下一步”按钮

在下一个窗口中，为jar和启动配置（带有main方法的类）指定一个名称

为所需的库选择适当的选项，然后单击“完成”按钮

“它显示一些警告，但不起作用” 请记住，如果您不提供所遇到错误的详细信息，我们将无法为您提供太多帮助：

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Eclipse可能会警告您，您的可执行jar文件已创建，但有警告。这只是意味着你的类有警告（黄色！）。这并不意味着生成的jar文件不能工作。

警告很好，这不会导致可执行jar出现问题

通过取消归档jar文件来检查

.jar\META-INF\MANIFEST.MF

，并找到

Main类：

如果这个

Main类不存在，那么在创建jar时出现了一些问题

确保你遵循正确的步骤。请检查此项作为参考

注意：您可以手动编辑
MANIFEST.MF
当您有一个java类，其中的内容被完全注释掉时，就会发生这种情况。但是，创建的jar很可能会正常工作。
我尝试过这个方法，但导出时会发出警告，jar文件未执行警告不会阻止您启动jar。试试$java-jarfilename.jar。发生了什么事？你说“不工作”到底是什么意思？我试过用它，但它被导出时带有警告，jar文件不可执行。在导出之前修复警告。你有一个可执行的主类吗？你有主要功能吗？如果您在eclipse中点击“run”，它会运行吗？“Warning is just fine”警告不应被忽略。报告这些警告是有原因的。@Andrew我不确定这些警告是如何导致将jar作为可执行文件的问题的。你能解释一下吗。我很清楚这是有目的的。这取决于警告是什么，仍在等待OP的详细信息。更改IDE使用的编译设置以显示警告的详细信息。要了解有关运行时错误的更多信息，请启动应用程序。从命令行使用类似于java-jar的.jar

 JAR export finished with warnings. See details for additional information.
  Exported with compile warnings: AngalTask/src/org/isf/accounting/gui/PatientBillEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/accounting/gui/BillBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/admission/gui/AdmissionBrowserOld.java
  Exported with compile warnings: AngalTask/src/org/isf/admission/gui/AdmittedPatientBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/admission/gui/AdmissionBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/disease/gui/DiseaseEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/disease/gui/DiseaseBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/exa/gui/ExamBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/exa/gui/ExamEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/help/gui/AboutWindow.java
  Exported with compile warnings: AngalTask/src/org/isf/lab/gui/LabNew.java
  Exported with compile warnings: AngalTask/src/org/isf/lab/gui/LabBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/lab/gui/LabEditExtended.java
  Exported with compile warnings: AngalTask/src/org/isf/lab/gui/LabPrintFrame.java
  Exported with compile warnings: AngalTask/src/org/isf/lab/gui/LabEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/lab/manager/Results.java
  Exported with compile warnings: AngalTask/src/org/isf/medicals/gui/MedicalBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/medicals/gui/MedicalEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/medicalstock/gui/MovStockBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/medicalstock/gui/MovStockInserting.java
  Exported with compile warnings: AngalTask/src/org/isf/medicalstockward/gui/WardPharmacy.java
  Exported with compile warnings: AngalTask/src/org/isf/medicalstockward/gui/WardPharmacyEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/menu/gui/UserEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/menu/gui/Menu.java
  Exported with compile warnings: AngalTask/src/org/isf/menu/gui/MainMenu.java
  Exported with compile warnings: AngalTask/src/org/isf/menu/gui/Login.java
  Exported with compile warnings: AngalTask/src/org/isf/menu/gui/UserBrowsing.java
  Exported with compile warnings: AngalTask/src/org/isf/menu/gui/SubMenu.java
  Exported with compile warnings: AngalTask/src/org/isf/menu/gui/SplashWindow3.java
  Exported with compile warnings: AngalTask/src/org/isf/opd/gui/OpdEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/opd/gui/OpdBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/opd/gui/OpdEditExtended.java
  Exported with compile warnings: AngalTask/src/org/isf/operation/gui/OperationEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/operation/gui/OperationBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/patient/gui/PatientInsertExtended.java
  Exported with compile warnings: AngalTask/src/org/isf/patvac/gui/PatVacEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/patvac/gui/PatVacBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/priceslist/gui/PricesBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/serviceprinting/print/MedicalStockSelection.java
  Exported with compile warnings: AngalTask/src/org/isf/serviceprinting/print/MedicalPrintSelection.java
  Exported with compile warnings: AngalTask/src/org/isf/stat/reportlauncher/gui/ReportLauncher.java
  Exported with compile warnings: AngalTask/src/org/isf/therapy/gui/TherapyEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/therapy/gui/TherapyEntryForm.java
  Exported with compile warnings: AngalTask/src/org/isf/utils/jobjects/JAgenda.java
  Exported with compile warnings: AngalTask/src/org/isf/utils/jobjects/ShadowBorder.java
  Exported with compile warnings: AngalTask/src/org/isf/utils/jobjects/FixedFrame.java
  Exported with compile warnings: AngalTask/src/org/isf/utils/time/TimeComboBox.java
  Exported with compile warnings: AngalTask/src/org/isf/vaccine/gui/VaccineBrowser.java
  Exported with compile warnings: AngalTask/src/org/isf/vaccine/gui/VaccineEdit.java
  Exported with compile warnings: AngalTask/src/org/isf/video/gui/VideoDevicesPanel.java