java ²å¼þ¼ÓÔØ
package tao.hai.bing;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
public class LoadJar {
public static void main(String[] args)
{
System.out.println(System.getProperty("user.dir"));
String uri = "file:/G:/java/tao.jar";
try {
URL url = new URL(uri);
URLClassLoader loader = new URLClassLoader(new URL[]{url});
Class myClass = loader.loadClass("tao.hai.bing.print.Press");
Object object = myClass.newInstance();
Method method = myClass.getMethod("myPress", String.class);
method.invoke(object, "taohaibing22");
System.out.println(myClass.getName());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
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//JavaÎļþÏÂÔØµÄ¼¸ÖÖ·½Ê½
public HttpServletResponse download(String path, HttpServletResponse response) {
try {
// pathÊ ......
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¡¡¡¡ ......
String str = "ÖÐ";
String str1 = new String(str.getBytes("gbk"), "ISO8859-1");
String str2 = new String(str1.getBytes("ISO8859-1"), "gbk");
System.out.println(str2); //Êä³ö"ÖÐ" ......
String newStr = new String(oldStr.getBytes(), "UTF-8");
javaÖеÄStringÀàÊǰ´ÕÕunicode½øÐбàÂëµÄ£¬µ±Ê¹ÓÃString(byte[] bytes, String encoding)¹¹Ôì×Ö·û´®Ê±£¬encodingËùÖ¸µÄÊÇbytesÖеÄÊý¾ÝÊǰ´ÕÕÄÇÖÖ·½Ê½±àÂëµÄ£¬¶ø²»ÊÇ×îºó²úÉúµÄStringÊÇʲô±àÂ뷽ʽ£¬»»¾ä»°Ëµ£¬ÊÇÈÃϵͳ°ÑbytesÖеÄÊý¾ÝÓÉencoding±à ......