效果图
网站效果：
TIM截图20181113145717.png
手机展示：
aa.gif
概述
Fruit是一个解析html的框架。可以将html文件解析成本地实体文件。
Fruit地址：https://github.com/ghuiii/Fruit
解析的网址为：http://www.wyl.cc/tag/xinlingjitang/page/1
配合Rxjava、okhttp、retrofit使用
导包
compile 'io.reactivex.rxjava2:rxjava:2.1.3'
compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
compile 'com.squareup.okhttp3:okhttp:3.9.0'
compile 'com.squareup.okhttp3:logging-interceptor:3.9.0'
/*解析html*/
compile 'me.ghui:fruit-converter-retrofit:1.0.5'
compile 'me.ghui:global-retrofit-converter:1.0.1'
/*converter-gson 用于将请求结果转换为实体类型*/
compile 'com.squareup.retrofit2:converter-gson:2.3.0'
/*converter-scalars 用于将请求结果转换为基本类型，一般为String*/
compile 'com.squareup.retrofit2:converter-scalars:2.3.0'
注意
刚开始因为用了 converter:1.0.4导致一直报错：
Error:Execution failed for task ':app:transformClassesWithDexBuilderForDebug'.
应该是和后面导入的converter-gson或者是converter-scalars不兼容。当改成fruit-converter-retrofit:1.0.5后问题解决。
初始化 OkHttp Retrofit Fruit
基本配置
public class ApiStrategy {
//读超时长，单位：毫秒
public static final int READ_TIME_OUT = 7676;
//连接时长，单位：毫秒
public static final int CONNECT_TIME_OUT = 7676;
/**
* 设缓存有效期为两天
*/
private static final long CACHE_STALE_SEC = 60 * 60 * 24 * 2;
public static QuotaionsApis apiService;
private Fruit mFruit;
public static QuotaionsApis getApiService() {
if (apiService == null) {
synchronized (Api.class) {
if (apiService == null) {
new ApiStrategy();
}
}
}
return apiService;
}
private ApiStrategy() {
HttpLoggingInterceptor logInterceptor = new HttpLoggingInterceptor();
logInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
//缓存
File cacheFile = new File(MyApplication.getContextObject().getCacheDir(), "cache");
Cache cache = new Cache(cacheFile, 1024 * 1024 * 100); //100Mb
//增加头部信息
Interceptor headerInterceptor = new Interceptor() {
@Override
public Response intercept(Chain chain) throws IOException {
Request build = chain.request().newBuilder()
//.addHeader("Content-Type", "application/json")//设置允许请求json数据
.build();
return chain.proceed(build);
}
};
//创建一个OkHttpClient并设置超时时间
OkHttpClient client = new OkHttpClient.Builder()
.readTimeout(READ_TIME_OUT, TimeUnit.MILLISECONDS)
.connectTimeout(CONNECT_TIME_OUT, TimeUnit.MILLISECONDS)
.addInterceptor(mRewriteCacheControlInterceptor)
.addNetworkInterceptor(mRewriteCacheControlInterceptor)
.addInterceptor(headerInterceptor)
.addInterceptor(logInterceptor)
.cache(cache)
.build();
Retrofit retrofit = new Retrofit.Builder()
.client(client)
.baseUrl(Constant.BASE_URL)
// .addConverterFactory(GsonConverterFactory.create())//请求的结果转为实体类
//适配RxJava2.0,RxJava1.x则为RxJavaCallAdapterFactory.create()
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GlobalConverterFactory.create().add(FruitConverterFactory.create(getFruit()), Html.class))
.build();
apiService = retrofit.create(QuotaionsApis.class);
}
/**
* 云端响应头拦截器，用来配置缓存策略
* Dangerous interceptor that rewrites the server's cache-control header.
*/
private final Interceptor mRewriteCacheControlInterceptor = new Interceptor() {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
String url = request.url().toString();
Log.i("http", url);
String cacheControl = request.cacheControl().toString();
if (!NetworkUtil.isNetworkConnected(MyApplication.getContextObject())) {
request = request.newBuilder()
.cacheControl(TextUtils.isEmpty(cacheControl) ? CacheControl
.FORCE_NETWORK : CacheControl.FORCE_CACHE)
.build();
}
Response originalResponse = chain.proceed(request);
if (NetworkUtil.isNetworkConnected(MyApplication.getContextObject())) {
return originalResponse.newBuilder()
.header("Cache-Control", cacheControl)
.removeHeader("Pragma")
.build();
} else {
return originalResponse.newBuilder()
.header("Cache-Control", "public, only-if-cached, max-stale=" +
CACHE_STALE_SEC)
.removeHeader("Pragma")
.build();
}
}
};
private Fruit getFruit() {
if (mFruit == null) {
mFruit = new Fruit();
}
return mFruit;
}
}
配置请求参数
和基本的retrofit参数类似
public interface QuotaionsApis {
//使用动态 url 匹配
@GET
@Html
Observable<QuotationsBean> getQuotationsBean(@Url String url);
}
根据网页结构得到相应的字段
TIM截图20181113145228.png
对应的实体如下：
public class QuotationsBean {
@Pick(value = "article")
private List<QuotationsBeanItem> quotationsBeanItemList;
...
public static class QuotationsBeanItem {
//图片
@Pick(value = "img", attr = Attrs.SRC)
private String img;
@Pick(value = "h2.entry-title > a")
private String title;
@Pick(value = "div.archive-content")
private String content;
@Pick(value = "span.entry-meta > span")
private String time;
@Pick(value = "h2.entry-title > a", attr = Attrs.HREF)
private String link;
@Pick(value = "span.cat > a")
private String tag;
...
}
根据视图结构便可以得到对应的数据。
完成响应 进行请求
ApiMethods.getQuotations(new MyObserver<QuotationsBean>(MainActivity.this, new ObserverOnNextListener<QuotationsBean>() {
@Override
public void onNext(QuotationsBean quotationsBean) {
List<QuotationsBean.QuotationsBeanItem> listData = quotationsBean.getQuotationsBeanItemList();
if (page == 1) {
mList.clear();
mList.addAll(listData);
refreshLayout.finishRefresh(1000);
} else if (page > 0) {
mList.addAll(listData);
refreshLayout.finishLoadMore(1000/*,false*/);
}
mAdapter.notifyDataSetChanged();
}
}), Constant.QUOTATIONS_URL + String.valueOf(page));
