1、jdk1.6中調用java的打包工具的關鍵代碼:
/**
* 編譯java類
* @param file java文件列表
* @param dir 編譯後calss文件存放目錄
* @throws IOException
* @throws ClassNotFoundException
* @throws IllegalAccessException
* @throws InstantiationException
*/
public void compile(String dir,String errorFile,StringBuffer lib,String source,File...file) throws IOException, InstantiationException, IllegalAccessException, ClassNotFoundException
{
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
String version=System.getProperty("java.version");
if(compiler==null)
{//在運行環境中JRE不包含JDK中的工具包tools.jar必須重新加載JDK中LIB下面的tools.jar工具包
System.out.println("load JavaCompiler...");
compiler=Loader.loadCompile().newInstance();//加載編譯器並且實例化
if(compiler==null)
{//JDK 工具包tools.jar 沒有找到
System.out.println("[../jdk"+version+"/lib/tools.jar] not found");
new JOptionPane().showMessageDialog(null, "jdk"+version+"/lib/tools.jar未找到");
System.exit(0);//程序退出
//return;
}
}
DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>();
//java文件管理器
StandardJavaFileManager fileManager = compiler
.getStandardFileManager(diagnostics, null, null);
//指定class文件存放目錄
//-d是指定編譯好的class文件目錄,-source指定兼容版本,-cp指定引用類文件,-target是編譯後的class文件的版本,-encoding是使用的編碼,-sourcepath是java源文件引用其他目錄下面的java源文件
lib.append(LoaderLibrary.getLibraryAllFiles());
Iterable<String> options=Arrays.asList("-d",dir,"-nowarn","-Xlint:none","-source","1.5","-target",version.substring(0, 3),"-encoding","utf-8","-cp",lib.toString(),"-sourcepath",source);
//設置編譯的java文件列表
Iterable<? extends JavaFileObject> compilationUnits = fileManager
.getJavaFileObjects(file);
JavaCompiler.CompilationTask task = compiler.getTask(null,
fileManager, diagnostics, options,
null, compilationUnits);
boolean rs=task.call();//執行編譯
for(Diagnostic info:diagnostics.getDiagnostics())
{//輸出日誌信息
System.out.println("message:"+info.getMessage(null));
}
if(rs)
{
System.out.println("成功編譯了"+file.length+"個JAVA文件");
}
else
{
System.out.println("本次編譯失敗");
}
fileManager.close();
}
2、jdk1.5中調用java的打包工具的關鍵代碼:
/**
* 編譯java類
* @param file java文件列表
* @param dir 編譯後calss文件存放目錄
* @throws IOException
* @throws ClassNotFoundException
* @throws IllegalAccessException
* @throws InstantiationException
* @throws
* @throws
* @throws SecurityException
* @throws IllegalArgumentException
*/
public void compile(String dir,String errorFile,StringBuffer lib,String source,File...file) throws IOException, InstantiationException, IllegalAccessException, ClassNotFoundException, IllegalArgumentException, SecurityException
{
try {
String version=System.getProperty("java.version");
lib.append(LoaderLibrary.getLibraryAllFiles());
String[] options=new String[]{"-d",dir,"-nowarn","-Xlint:none","-source","1.5","-target",version.substring(0, 3),"-encoding","utf-8","-cp",lib.toString(),"-sourcepath",source};
String[] list=processFile(file,options);
Class compilerClass=loadCompile();//編譯器類
Class contextClass=Class.forName("com.sun.tools.javac.util.Context",true,compilerClass.getClassLoader());
Object compiler=compilerClass.getConstructor(String.class).newInstance("javac");//編譯器實例
Method method=compilerClass.getMethod("compile", String[].class,contextClass);//編譯方法
//指定class文件存放目錄
int rs=(Integer)method.invoke(compiler, list,contextClass.newInstance());//執行編譯
if(rs==0)
{
System.out.println("成功編譯了"+file.length+"個JAVA文件");
}
else
{
System.out.println("本次編譯失敗");
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}