问题
I'm currently working on a custom Minecraft 1.6.4 launcher. I have written most of the code is C# however I'm writing the final piece of code in batch.
This seems to work to launch the minecraft 1.5.2 jar
cd "%~1"
java -Xms512m -Xmx1g -Djava.library.path=Bin\bin\native\ -cp Bin\bin\* net.minecraft.client.Minecraft %~2 %~3
pause
(C# Works out the session ID (%~3))
However in minecraft 1.6.4 I get an error:
Error: Could not find or load main class net.minecraft.client.Minecraft
I have heard about a change in the way Minecraft launches, is there anyway for me to implement the new system into my launcher?
If there is a way to do it without batch that would be awesome!
C# code to launch the batch file:
string sessionID = Session.DoLogin(tbUser.Text, tbPassword.Text).SessionId;
Process p = Process.Start("launch.bat", @"""" + filePath + @"""" + " " + tbUser.Text + " " + sessionID);
p.WaitForExit();
回答1:
I was the first to make a C# launcher for minecraft and I'm happy to share some experiences. I'm sorry to reply to you so late!
Note that you are looking to start the class "net.minecraft.client.main.Main" instead of "net.minecraft.client.Minecraft". I came across this as well when I had to port my launcher to 1.6. It still works for 1.7.4 currently.
The example below is a cleaned up batch command straight from my (EDIT: OLD, but gold) open source launcher
Minecraft 1.7.4 batch launch (jvm arguments):
java
-Djava.library.path=C:\Users\<username>\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.0\
-cp
C:\Users\<username>\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.2\authlib-1.2.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.1-nightly-20131120\lwjgl-2.9.1-nightly-20131120.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.1-nightly-20131120\lwjgl_util-2.9.1-nightly-20131120.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.1-nightly-20131120\lwjgl-platform-2.9.1-nightly-20131120-natives-windows.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\5.12\twitch-5.12.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-platform\5.12\twitch-platform-5.12-natives-windows-64.jar;
C:\Users\<username>\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-external-platform\4.5\twitch-external-platform-4.5-natives-windows-64.jar;
net.minecraft.client.main.Main
--username=<your username>
--accessToken <your accesstoken>
--version 1.7.4
--gameDir C:\Users\<username>\AppData\Roaming\.minecraft
--assetsDir C:\Users\<username>\AppData\Roaming\.minecraft\assets
--userProperties {}
--uuid <your uuid>
You can also find out how to get the uuid, session token, and so on on in the same namespace in the link above , or HERE.
回答2:
This might help: http://s3.amazonaws.com/Minecraft.Download/versions/1.6.4/1.6.4.json
The link format works for all minecraft versions so you can compare the information and check what has changed.
Be also aware that the Minecraft authentication system has changed. (I think you have to use the new system since 1.7 but it might apply for 1.6 too)
Edit: You also might want to decompile the official launcher (I did that for my own launcher) provides some useful information about how stuff works.
来源：https://stackoverflow.com/questions/20486866/launch-minecraft-1-6-4-from-command-line-with-c-sharp