Because the company's business needs, it is doing android developed online tools reptiles waiting to see for a long time, behind the chosen jsoup, ask why you choose it? Do not want to ask? Well I tell you, because of the simple ah. Well, the topic began.
The first step: go to the official website to download jsoup.jar package https://jsoup.org/ , you can also choose to download here I support what bloggers integral xxxx
Step two: because okhttputils network with bloggers request tool (Zhang Hong Yang Great God works), if you use the other their own free. download link:
Step two: two jar package into libs directory android project inside, and then I remember the two of them added to the dependent library in the project right jar package, and then click add as library,
The third step: to find a requested address it and see the effect, and then continue to give you explain the usage, that it first with Baidu heaven.
This is a request code
OkHttpUtils.get()
.url("https://www.baidu.com")
.build()
.execute(new StringCallback() {
@Override
public void onError(Call call, Exception e, int i) {
}
@Override
public void onResponse(String s, int i) {
Document doc = Jsoup.parse(s);
Elements el=doc.select("div[id=u1]");
String map=doc.select("a[name=tj_trmap]").text();
Log.d(TAG, "onResponse: "+map);
for (Element li : el) {
String xw=li.select("a[name=tj_trnews]").text();
String all=li.select("a[class=mnav]").text();
Log.d(TAG, "onResponse: "+xw);
Log.d(TAG, "onResponse: "+all);
}
}
});This is a log of print
This is Baidu code
You can see from above, with three ways to climb these data, the first is a map, and the second is news, is the third row of content.
The role of each line of code:
Document doc = Jsoup.parse (s); // This is the beginning of reptiles, s is returned html code throughout the site.
Two options can be done later, 1 is a single field take enough. 2 is take a list of each piece of data.
1.String map=doc.select("a[name=tj_trmap]").text();
select which parameters you need to take is to label field, as:
May correspond successively to [] brackets is the property of the label. So you take it to the site in the name attribute of a tag is to all fields of tj_trmap.
2. The pick list for each piece of data, themselves Baidu.
Incurable diseases:
Climb out of the site's html code and the code actually see on the page is not the same.
1. 有时候发现部分看的见，部分看不见，那么你需要看看网站是不是有iframe标签，有的话里面的内容可能真的看不到，还必须重新请求一下iframe里面的地址。
2.请求的地址也有问题，比如说https://stockpage.10jqka.com.cn/realHead_v2.html#hs_000625
网页上打开正常显示数据，而自己请求又是一回事了，因为#后面的东西是不带的，服务器是不认#后面的内容，除非用webview打开，听我师傅说必须拿到json数据才行，后面发现很多网站都这样，那只有自己想解决方法。
解决办法如下：
先地址http://stockpage.10jqka.com.cn/realHead_v2.html#hs_000625，然后用google浏览器打开，打开开发者工具选择Sources,发现last.js返回的就是json数据
然后就是把它拼装成一个链接https://d.10jqka.com.cn/v2/realhead/hs_002540/last.js。值得注意的是它是https，不然会报错。然后数据就拿到了。然后对其进行json数据解析，数据都拿到了，然后在分配到自己app里面。
