Retrofit2.0的get请求和post请求（入门级）

       近期，随着开发的需要，研究了一下网络请求Retrofit的功能，其实就是对okhttp的封装，使用起来很方便，主要是以注解的形式进行请求，下面是我看过一些博客大佬们写过的常用注解，

方法注解，包含@GET、@POST、@PUT、@DELETE、@PATH、@HEAD、@OPTIONS、@HTTP。标记注解，包含@FormUrlEncoded、@Multipart、@Streaming。参数注解，包含@Query,@QueryMap、@Body、@Field，@FieldMap、@Part，@PartMap。
其他注解，@Path、@Header,@Headers、@Url
这些注解都是以后慢慢深化时所需要的，不适合初步了解的开发者去全部吸收，接下来是入门级别的使用retrofit的简单get,post的使用首先要导依赖：     compile 'com.squareup.retrofit2:retrofit:2.0.2'    compile 'com.squareup.retrofit2:converter-gson:2.0.2'    compile 'com.squareup.retrofit2:adapter-rxjava:2.0.2'    compile 'com.squareup.okhttp3:logging-interceptor:3.2.0' 在Actvity的oncreate方法中初步配置，使用构建者模式，其中baseUrl是基本网址，addConverterFactory是解析json字符串并返回对应Bean类client是okhttp的延伸配置，简单使用不用调用。
   Retrofit retrofit=new Retrofit.Builder()                .baseUrl("https://www.zhaoapi.cn/")                .client(setCard())                .addConverterFactory(GsonConverterFactory.create())                .build();





retrofit使用时，请求方式主要是以接口的形式实现，如下面代码块，get请求需要使用注解@GET,参数是地址，此地址是baseUrl的追加，用于填写完整路径
下面是接收对象，所有的retrofit接收对象都是Call集合，泛型可以是解析后对应的Bean类或是集合，还可以用自带的ResponseBody类接收，最后自行解析，我认为，
对应的Bean比较方便，Post请求和get请求区别不大，需要使用注解@FormUrlEncoded对所传地址进行编码解析，在自定义方法pgetUser中加注解@Field  uid为请求参数
而后面的参数不但可以是String,还可以是Map集合的键值对形式，为了方便多个参数请求
这就是get,post请求的接口类内容；
重点是@GET,@Query,@FormUrlEncoded,@POST,@Field的使用


public interface UIData {    @GET("user/getUserInfo")    Call<User> getUser(@Query("uid") String uid);    @FormUrlEncoded    @POST("user/getUserInfo")    Call<User> pgetUser(@Field("uid") String uid);}
接口类创建完毕，就开始调用使用//调用retrofit的create方法，获得接口类 


final UIData uiData = retrofit.create(UIData.class);//调用get请求的getUser方法，并返回gson解析后的的bean类 retrofit2.Call<User> user = uiData.getUser("88");//使用call进行请求 user.enqueue(new retrofit2.Callback<User>() {    @Override    public void onResponse(retrofit2.Call<User> call, retrofit2.Response<User> response) {        String msg = response.body().getMsg();        System.out.println("数据=========="+msg);    }    @Override    public void onFailure(retrofit2.Call<User> call, Throwable t) {        System.out.println("数据=========="+t.toString());    }});post请求：//同样的办法获得接口类        final UIData uiData = retrofit.create(UIData.class);//post方法        Call<User> userCall = uiData.pgetUser("88");                userCall.enqueue(new retrofit2.Callback<User>() {            @Override            public void onResponse(retrofit2.Call<User> call, retrofit2.Response<User> response) {                String msg = response.body().getMsg();                System.out.println("数据=========="+msg);            }            @Override            public void onFailure(retrofit2.Call<User> call, Throwable t) {                System.out.println("数据=========="+t.toString());            }        });



User的Bean类：
public class User {    /**     * msg : 获取用户信息成功     * code : 0     * data : {"age":null,"appkey":null,"appsecret":null,"createtime":"2017-10-03T00:00:00","email":null,"gender":0,"icon":"http://120.27.23.105/images/88.jpg","mobile":"13716792264","money":0,"nickname":"张贺岗","password":"111111","token":null,"uid":88,"username":"13716792264"}     */    private String msg;    private String code;    private DataBean data;    public String getMsg() {        return msg;    }    public void setMsg(String msg) {        this.msg = msg;    }    public String getCode() {        return code;    }    public void setCode(String code) {        this.code = code;    }    public DataBean getData() {        return data;    }    public void setData(DataBean data) {        this.data = data;    }    public static class DataBean {        /**         * age : null         * appkey : null         * appsecret : null         * createtime : 2017-10-03T00:00:00         * email : null         * gender : 0         * icon : http://120.27.23.105/images/88.jpg         * mobile : [phone]         * money : 0         * nickname : 张贺岗         * password : 111111         * token : null         * uid : 88         * username : 13716792264         */        private Object age;        private Object appkey;        private Object appsecret;        private String createtime;        private Object email;        private int gender;        private String icon;        private String mobile;        private int money;        private String nickname;        private String password;        private Object token;        private int uid;        private String username;        public Object getAge() {            return age;        }        public void setAge(Object age) {            this.age = age;        }        public Object getAppkey() {            return appkey;        }        public void setAppkey(Object appkey) {            this.appkey = appkey;        }        public Object getAppsecret() {            return appsecret;        }        public void setAppsecret(Object appsecret) {            this.appsecret = appsecret;        }        public String getCreatetime() {            return createtime;        }        public void setCreatetime(String createtime) {            this.createtime = createtime;        }        public Object getEmail() {            return email;        }        public void setEmail(Object email) {            this.email = email;        }        public int getGender() {            return gender;        }        public void setGender(int gender) {            this.gender = gender;        }        public String getIcon() {            return icon;        }        public void setIcon(String icon) {            this.icon = icon;        }        public String getMobile() {            return mobile;        }        public void setMobile(String mobile) {            this.mobile = mobile;        }        public int getMoney() {            return money;        }        public void setMoney(int money) {            this.money = money;        }        public String getNickname() {            return nickname;        }        public void setNickname(String nickname) {            this.nickname = nickname;        }        public String getPassword() {            return password;        }        public void setPassword(String password) {            this.password = password;        }        public Object getToken() {            return token;        }        public void setToken(Object token) {            this.token = token;        }        public int getUid() {            return uid;        }        public void setUid(int uid) {            this.uid = uid;        }        public String getUsername() {            return username;        }        public void setUsername(String username) {            this.username = username;        }    }}

附上bean类，作为参考，最后完成


 compile 'com.squareup.retrofit2:retrofit:2.0.2'    compile 'com.squareup.retrofit2:converter-gson:2.0.2'    compile 'com.squareup.retrofit2:adapter-rxjava:2.0.2'    compile 'com.squareup.okhttp3:logging-interceptor:3.2.0'
 
compile 'com.squareup.retrofit2:retrofit:2.0.2' compile 'com.squareup.retrofit2:converter-gson:2.0.2' compile 'com.squareup.retrofit2:adapter-rxjava:2.0.2'compile 'com.squareup.okhttp3:logging-interceptor:3.2.0'