url编码转换的问题

Question

在java中我需要将搜索引擎的url转化为他原来的地址。。
google编码方式utf-8：
http://www.google.cn/search?hl=zh-CN&newwindow=1&q=java%E8%B0%83%E7%94%A8javascript&revid=201440269&ei=rG60ScjPIozXkAX6vZHXBA&sa=X&oi=revisions_inline&resnum=0&ct=broad-revision&cd=1
转换为
http://www.google.cn/search?hl=zh-CN&newwindow=1&q=java调用javascript&revid=201440269&ei=rG60ScjPIozXkAX6vZHXBA&sa=X&oi=revisions_inline&resnum=0&ct=broad-revision&cd=1

baidu编码方式ansi：
http://www.baidu.com/s?wd=java%B5%F7%D3%C3javascript
转换为
http://www.baidu.com/s?wd=java调用javascript

这两种转换方式用java怎么写？
希望各位高手能帮个忙，谢谢！！！

Answer 1

[code="java"]
public static void main(String[] args) {

    try {
        String s = "http://www.google.cn/search?hl=zh-CN&newwindow=1&q=java%E8%B0%83%E7%94%A8javascript&revid=201440269&ei=rG60ScjPIozXkAX6vZHXBA&sa=X&oi=revisions_inline&resnum=0&ct=broad-revision&cd=1";

        System.out.println(URLDecoder.decode(s, "UTF-8"));

        s = "http://www.baidu.com/s?wd=java%B5%F7%D3%C3javascript";

        System.out.println(URLDecoder.decode(s, "gb2312"));

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
}

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