java动态编译

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有时候需要在运行时动态生成源程序，然后编译。于是写了下面这个动态编译类（参考了网上的代码）

public class CompilerUtil {public static boolean compile(String binPath, String clsName, String source) {JavaCompiler cmp = ToolProvider.getSystemJavaCompiler();StandardJavaFileManager fm = cmp.getStandardFileManager(null, null, null);JavaFileObject jfo = new StringJavaObject(clsName, source);List<String> optionsList = new ArrayList<String>();optionsList.addAll(Arrays.asList("-d", binPath));List<JavaFileObject> jfos = Arrays.asList(jfo);JavaCompiler.CompilationTask task = cmp.getTask(null, fm, null, optionsList, null, jfos);return task.call();}static class StringJavaObject extends SimpleJavaFileObject {private String content;public StringJavaObject(String fileName, String content) {super(createUri(fileName), Kind.SOURCE);this.content = content;}private static URI createUri(String name) {return URI.create("String:///" + name + Kind.SOURCE.extension);}@Overridepublic CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {return content;}}}

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