编辑:使用不同的反编译器现在包含 Util$OS.class 文件
我正在尝试修改minecraft启动器以检查当前工作目录中是否有minecraft
文件夹,如果不存在,则使用已建立的例程前往克里特岛并下载所需的文件。这是我第一次涉足java编程,所以我感觉有点失落。这是有问题的类文件的源代码:(我认为需要修改的 block 从第 15 行开始)
文件Util.class
package net.minecraft;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.lang.reflect.Method;
import java.net.URI;
import java.net.URL;
import java.security.PublicKey;
import java.security.cert.Certificate;
import javax.net.ssl.HttpsURLConnection;
public class Util
{
private static File workDir = null;
public static File getWorkingDirectory() {
if (workDir == null) workDir = getWorkingDirectory("minecraft");
return workDir;
}
public static File getWorkingDirectory(String applicationName) {
String userHome = System.getProperty("user.home", ".");
File workingDirectory;
File workingDirectory;
File workingDirectory;
File workingDirectory;
switch ($SWITCH_TABLE$net$minecraft$Util$OS()[getPlatform().ordinal()]) {
case 1:
case 2:
workingDirectory = new File(userHome, '.' + applicationName + '/');
break;
case 3:
String applicationData = System.getenv("APPDATA");
File workingDirectory;
if (applicationData != null) workingDirectory = new File(applicationData, "." + applicationName + '/'); else
workingDirectory = new File(userHome, '.' + applicationName + '/');
break;
case 4:
workingDirectory = new File(userHome, "Library/Application Support/" + applicationName);
break;
default:
workingDirectory = new File(userHome, applicationName + '/');
}
if ((!workingDirectory.exists()) && (!workingDirectory.mkdirs())) throw new RuntimeException("The working directory could not be created: " + workingDirectory);
return workingDirectory;
}
private static OS getPlatform() {
String osName = System.getProperty("os.name").toLowerCase();
if (osName.contains("win")) return OS.windows;
if (osName.contains("mac")) return OS.macos;
if (osName.contains("solaris")) return OS.solaris;
if (osName.contains("sunos")) return OS.solaris;
if (osName.contains("linux")) return OS.linux;
if (osName.contains("unix")) return OS.linux;
return OS.unknown;
}
public static String excutePost(String targetURL, String urlParameters)
{
HttpsURLConnection connection = null;
try
{
URL url = new URL(targetURL);
connection = (HttpsURLConnection)url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("Content-Length", Integer.toString(urlParameters.getBytes().length));
connection.setRequestProperty("Content-Language", "en-US");
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
connection.connect();
Certificate[] certs = connection.getServerCertificates();
byte[] bytes = new byte[294];
DataInputStream dis = new DataInputStream(Util.class.getResourceAsStream("minecraft.key"));
dis.readFully(bytes);
dis.close();
Certificate c = certs[0];
PublicKey pk = c.getPublicKey();
byte[] data = pk.getEncoded();
for (int i = 0; i < data.length; i++) {
if (data[i] == bytes[i]) continue; throw new RuntimeException("Public key mismatch");
}
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
InputStream is = connection.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
StringBuffer response = new StringBuffer();
String line;
while ((line = rd.readLine()) != null)
{
String line;
response.append(line);
response.append('\r');
}
rd.close();
String str1 = response.toString();
return str1;
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
finally
{
if (connection != null)
connection.disconnect();
}
throw localObject;
}
public static boolean isEmpty(String str) {
return (str == null) || (str.length() == 0);
}
public static void openLink(URI uri) {
try {
Object o = Class.forName("java.awt.Desktop").getMethod("getDesktop", new Class[0]).invoke(null, new Object[0]);
o.getClass().getMethod("browse", new Class[] { URI.class }).invoke(o, new Object[] { uri });
} catch (Throwable e) {
System.out.println("Failed to open link " + uri.toString());
}
}
private static enum OS
{
linux, solaris, windows, macos, unknown;
}
}
我已经做了一些关于获取当前工作目录的研究,但我不确定需要修改什么。如果有人至少可以解释文件各个部分的含义,那将非常有帮助。
最佳答案
public static File getWorkingDirectory(String applicationName) {
File workingDirectory = new File("." + File.separator + applicationName);
if ((!workingDirectory.exists()) && (!workingDirectory.mkdirs()))
throw new RuntimeException("The working directory could not be created: " + workingDirectory);
return workingDirectory;
}
很抱歉让您困惑,这应该适合您。 它将在与您的启动器相同的目录中创建一个“minecraft”文件夹。
注意:在 OS X 上,这仍会在文件夹中创建 .app 文件夹,而不是实际 JAR 所在的 .app/Contents/Resources/Java 文件夹,因此您在任何操作系统上都不会遇到任何问题.
希望这有帮助!
关于java - 将我的世界数据存储在当前目录中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/7811324/