mw.visitMaxs(0, 0);
mw.visitEnd();
cw.visitEnd();
byte[] code = cw.toByteArray();
try {
IParser parser = (IParser) DynamicClassLoader.getClass(name, code)
.newInstance();
parser.merge(context, out);
out.flush();
return new String(bos.toByteArray());
} catch (Exception e) {
throw new RuntimeException("不能实例化Parser对象");
}