Question

我有一个我在SO上找到的程序，允许用户输入查询并使用谷歌搜索任何输入的内容。然后该程序返回Google提供的前4个结果。这是代码：

public class TestGoogleSea {

    public static void main(String[] args) throws IOException {
        String address = "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=";
        String query = "who was the 19th president of america";
        String charset = "UTF-8";

        URL url = new URL(address + URLEncoder.encode(query, charset));
        Reader reader = new InputStreamReader(url.openStream(), charset);
        GoogleResults results = new Gson().fromJson(reader, GoogleResults.class);

        int total = results.getResponseData().getResults().size();
        System.out.println("total: "+total);

        // Show title and URL of each results
        for(int i=0; i<=total-1; i++){
            System.out.println("Title: " + results.getResponseData().getResults().get(I).getTitle());
            System.out.println("URL: " + results.getResponseData().getResults().get(I).getUrl() + "\n");
        }
    }
}


class GoogleResults{

    private ResponseData responseData;
    public ResponseData getResponseData() { return responseData; }
    public void setResponseData(ResponseData responseData) { this.responseData = responseData; }
    public String toString() { return "ResponseData[" + responseData + "]"; }

    static class ResponseData {
        private List<Result> results;
        public List<Result> getResults() { return results; }
        public void setResults(List<Result> results) { this.results = results; }
        public String toString() { return "Results[" + results + "]"; }
    }

    static class Result {
        private String url;
        private String title;
        public String getUrl() { return url; }
        public String getTitle() { return title; }
        public void setUrl(String url) { this.url = url; }
        public void setTitle(String title) { this.title = title; }
        public String toString() { return "Result[url:" + url +", title:" + title + "]"; }
    }
}

对于这个特定情况，（当查询是＆＃34;谁是美国第19任总统＆＃34;）时，输出是这样的：

Total: 4
Title: Rutherford B. Hayes - Wikipedia, the free encyclopedia
URL: http://en.wikipedia.org/wiki/Rutherford_B._Hayes
Title: List of <b>Presidents</b> of the United States - Wikipedia, the free <b>...</b>
URL: http://en.wikipedia.org/wiki/List_of_Presidents_of_the_United_States
Title: Rutherford B. Hayes | The White House
URL: http://www.whitehouse.gov/about/presidents/rutherfordbhayes
Title: <b>American President</b>: Rutherford Birchard Hayes - Miller Center
URL: http://millercenter.org/president/hayes

现在，如果你真的在寻找＆＃34;谁是美国第19任总统＆＃34;在Google上，除了网站列表之外，你还可以看到Rutherford B. Hayes的图片和他的名字以及更多关于Rutherford B. Hayes＆＃34;的内容。我要问的是，无论如何我都能得到这些信息，谷歌从维基百科得到的海耶斯的简短描述最好是作为一个字符串，或者由于Gson的限制而无法实现？

使用Google的Gson获取更多信息

0 个答案: