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interface SimpleGET{
@GET("/") //表明是GET方式. "/"会拼接在setEndpoint(url)中url(主机地址)的后面.
Response getResponse(); //可以简单的理解为网络访问完把Response转换为一个对象.这里没有转换,还是Response.
}
String url="http://tieba.baidu.com";
RestAdapter adapter=new RestAdapter.Builder().setEndpoint(url).build(); //setEndpoint(url)设置网络访问地址的主机地址
SimpleGET create = adapter.create(SimpleGET.class); //retrofit会生成上面的SimpleGET接口的一个的实例.
Response response = create.getResponse();
int status = response.getStatus(); //返回码
try {
InputStream in = response.getBody().in(); //response的输入流.看到网络访问的输入流都很熟悉吧.想转换成字符串还是json还是图片就看服务器给的是什么了.
} catch (IOException e) {
e.printStackTrace();
}
interface SimplePOST{
@POST("/android") //表明是使用Post方式进行访问. 并且会把后面的路径拼接到主机名的后面-->拼接到setEndpoint(url)中的url的后面.
Response getResponse();
}
String url="http://tieba.baidu.com";
RestAdapter adapter=new RestAdapter.Builder().setEndpoint(url).build(); //和上面post后面的路径拼接,想当于访问http://tieba.baidu.com/android
SimplePOST create = adapter.create(SimplePOST.class);
Response response = create.getResponse();
int status = response.getStatus();
try {
InputStream in = response.getBody().in();
} catch (IOException e) {
e.printStackTrace();
}
interface GitHub {
@GET("/repos/{owner}/{repo}/contributors")
List<Contributor> contributors(@Path("owner") String owner, @Path("repo") String repo);
private static final String API_URL = "https://api.github.com";
RestAdapter restAdapter = new RestAdapter.Builder().setEndpoint(API_URL).build();
GitHub github = restAdapter.create(GitHub.class);
List<Contributor> contributors = github.contributors("square", "retrofit"); //相当于对路径中{}部分进行动态替换. 相当于访问https://api.github.com/repos/square/retrofit/contributors
static class Contributor { //一个pojo类(Plain Ordinary Java Object）简单的Java对象-->相比javaBean更简单.
String login;
int contributions;
}
interface GitHub {
@GET("/repos/{owner}/{repo}/contributors")
List<Contributor> contributors(@Path("owner") String owner, @Path("repo") String repo);
}
RestAdapter restAdapter = new RestAdapter.Builder().setEndpoint(API_URL).build(); //默认设置了GsonConverter的转换器.把response直接解析为一个POJO对象.
GitHub github = restAdapter.create(GitHub.class);
//访问这个地址返回的是一个JsonArray,JsonArray的每一个元素都有login和contributions这2个key和其对应的value.提取出来封装进POJO对象中.
List<Contributor> contributors = github.contributors("square", "retrofit");
for (Contributor contributor : contributors) {
Log.v("retrofit", contributor.login + " (" + contributor.contributions + ")");
}
class StringConverter implements Converter{
@Override
public Object fromBody(TypedInput input, Type type) throws ConversionException { //response输入流到对象的转换,
try {
InputStream in = input.in(); //获取了输入流,就可以根据意愿随意转换了.
String str = convertStream2String(in);
return str;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private String convertStream2String(InputStream in) throws IOException { //inputStream转换为String
BufferedReader reader=new BufferedReader(new InputStreamReader(in));
StringBuilder sb=new StringBuilder();
String line=null;
while((line=reader.readLine())!=null){
sb.append(line);
sb.append("\n");
}
return sb.toString();
}
@Override
public TypedOutput toBody(Object obj) { //对象到输出流的转换
return null;
}
}
interface StringClient {
@GET("/")
String getString(); //方法的返回值是String,需要StringConverter转换器Converter把Response转换为String.
}
String url="http://tieba.baidu.com"; RestAdapter adapter=new RestAdapter.Builder().setEndpoint(url).setConverter(new StringConverter()).build(); StringClient create = adapter.create(StringClient.class); String str = create.getString();
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原文地址：http://www.cnblogs.com/laiqurufeng/p/4483658.html
