package test;import java.io.*;/** * 动态执行一段代码(生成文件->编译->执行) * * @author kingfish * @version 1.0 */public class TestRun { private String fileName = "Test.java"; private String className = "Test.class"; public TestRun() { File f = new File(fileName); if (f.exists()) f.delete(); f = new File(className); if (f.exists()) f.delete(); } /** * 创建java文件 */ public void createJavaFile(String body) { String head = "public class Test{\r\n public static void runCode(){"; String end = "\r\n }\r\n}"; try { DataOutputStream dos = new DataOutputStream(new FileOutputStream( fileName)); dos.writeBytes(head); dos.writeBytes(body); dos.writeBytes(end); dos.close(); } catch (Exception e) { e.printStackTrace(); } } /** * 编译 */ public int makeJavaFile() { int ret = 0; try { Runtime rt = Runtime.getRuntime(); Process ps = rt.exec("cmd /c javac " + fileName); ps.waitFor(); byte[] out = new byte[1024]; DataInputStream dos = new DataInputStream(ps.getInputStream()); dos.read(out); String s = new String(out); if (s.indexOf("Exception") > 0) { ret = -1; } } catch (Exception e) { ret = -1; e.printStackTrace(); } return ret; } /** * 反射执行 */ public void run() { try { Class.forName("Test").getMethod("runCode", new Class[] {}).invoke( null, new Object[] {}); } catch (Exception e) { e.printStackTrace(); } } /** * 测试 */ public static void main(String[] args) { System.out.println(); String cmd = "System.out.println(\"usage:java TestRun int i=1; System.out.println(i+100);\");"; if (args.length >= 1) { cmd = args[0]; } TestRun t = new TestRun(); t.createJavaFile(cmd); if (t.makeJavaFile() == 0) { t.run(); } }}
相关资源：基于Gh0st3.8修改编译成功的远程控制源代码
