如何将 JRE 与 Launch4j 捆绑在一起？

我的电脑上有 Launch4J，它是一个很棒的程序。我感兴趣的特性之一是在一般情况下捆绑 JRE 的能力。EXE 文件。然而，我找不到任何描述如何进行这项工作的文档。

如何将 JRE 与 EXE 捆绑在一起？此外，我在哪里可以得到一个小型的，便携式 JRE 运行？Oracle 上的下载链接用于安装程序包。

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The jre can usually be found in your SDK folder. Yes the links online are installers, but once it installs, the JRE is now located on your local disk. Mine is located in 

${jdk folder}\jre

The parts that you don't need from the JRE could probably be removed manually if you really wanted (I'm not sure whats available online).

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最佳答案

After some attempts i finally get a workaround to bundle the jre in my application:

I package my app as a zip file with the following folders inside:

containerFolder
|- jre
|-bin (in bin there is java.exe)
|-lib
|- cfg (to save the user configuration, but it's not needed)
|- bin (my application with the .exe and the .jar and all the other stuff)

In the xml file of launch4j i configure the jre like this:

<jre>
<path>../jre</path>
<opt>-DgvSIG.confDir=../cfg</opt>
</jre>

The trick here is that the path is not to the java.exe file. The path to the jre is relative to the position of the .exe and it should point to one folder before the java.exe file

The jre folder i'm using is just a copy&paste from the jre folder installed on a windows system.

小开

The same problem like you mate. No worries now. Its all solve with the maximum depth to solve future solution. Solution how you can bundle your JRE for your jar without the need that the user has to install java or not. Your java application will run.

  1. Copy lib and bin folder from your JRE folder to your project dist folder

jar to exe conversion

  1. open launch4j and enter the following setting. enter image description here

The trick is you need to give the full path to the including javaw.exe.

Enjoy!!!!

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I did the following and it worked for me using ver Launch4j 3.11:

  1. Created a new folder for my application (called for example MyApp).
  2. Copied the jar file from the java project dist folder to the MyApp along with the lib folder.
  3. Created a folder called jre in my application folder MyApp so now MyApp folder contains:
    • MyApp.jar
    • lib <- this has the libraries needed by my java app.
    • jre
  4. Copied the bin and lib folders from java jre folder (C:\Program Files (x86)\Java\jre7) to MyApp\jre

  5. In the Launch4j having set all the required options, then set the Bundled JRE path to "jre"

    Launch4j JRE options

  6. Make sure that in the search options "Only use private JDK runtimes" is selected.
小开

I have just done this. Above clearly describe the method for bundling jre.

Here, I just share an experience that I have struggled. If you want to create an installer exe after created wrapper exe by launch4j, pay attention to the file path for launch4j and jre. This is my path I used to solve my issues:

launch4j, bin/jre, resources/bin/jre.

launch4j, bin, and resources are at same level.

小开

A working example of using Launch4J to bundle a Java application with a specific JRE can be found at https://github.com/vZome/vzome/blob/master/desktop/platform/windows/README.md. This particular distribution is configured to require vZome to use the bundled JRE rather than any JRE found on the target platform.

Hope this helps.


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