Retrofit 入门和提高

首先感谢这个哥们，把我从helloworld教会了。
http://blog.csdn.net/angcyo/article/details/50351247

retrofit 我花了两天的时间才学会，开始的时候，找资料，他们都讲得太深了，我从来没有成功过。知道上面的那个哥们的博客。 真的，我就喜欢一开始从最开始的做起。

retrofit
简单的：
1.首先
compile ‘com.squareup.retrofit:retrofit:2.0.0-beta2’

compile ‘com.squareup.okhttp:okhttp:2.5.0’
compile ‘com.squareup.okio:okio:1.6.0’
compile ‘com.google.code.gson:gson:2.4’
compile ‘com.squareup.retrofit:converter-gson:2.0.0-beta2’

2.声明接口

public interface GetBaidu{
@GET(“http://www.baidu.com/“)
Call get();
//Call get();//必须是这种形式,这是2.0之后的新形式
//我这里需要返回网页内容,不需要转换成Json数据,所以用了ResponseBody;
//你也可以使用Call get();这样的话,需要添加Gson转换器…后续介绍
}

3.调用接口

//经过测试: baseUrl必须设置,如果 声明接口时@GET使用了完整的url路径,那么baseUrl就会被忽略,否则就是拼接url
Retrofit retrofit = new Retrofit.Builder().baseUrl(“http://www.baidu.com/“).build();//在这里可以添加 Gson转换器等;
GetBaidu getBaidu = retrofit.create(GetBaidu.class);//使用上面声明的接口创建
Call call = getBaidu.get();//获取一个Call,才可以执行请求

//同步请求….
try {
Response bodyResponse = call.execute();
String body = bodyResponse.body().string();//获取返回体的字符串
Log.e(TAG, “”);
} catch (IOException e) {
e.printStackTrace();
}

//异步请求….
call.enqueue(new Callback() {//异步
@Override
public void onResponse(Response response, Retrofit retrofit) {
try {
String body = response.body().string();//获取返回体的字符串
} catch (IOException e) {
e.printStackTrace();
}
Log.e(TAG, “”);
}

  @Override
  public void onFailure(Throwable t) {
      Log.e(TAG, "");
  }

});

2.复杂点的 ，直接解析json的
1.首先
compile ‘com.squareup.retrofit:retrofit:2.0.0-beta2’

compile ‘com.squareup.okhttp:okhttp:2.5.0’
compile ‘com.squareup.okio:okio:1.6.0’
compile ‘com.google.code.gson:gson:2.4’
compile ‘com.squareup.retrofit:converter-gson:2.0.0-beta2’

2.声明接口

public interface GetBaidu{
    @GET("LifePayment/user/login.json?_mt=5849414f4d492c47554343492c342e342e34&_pla=6365625f616e64725f312e342e365f756e695f636562&_pro=30&_ss=3732307831323830&_uid=383637383232303236393838323934&_ver=1.4.6&mobile=3135383130323938363730&pwd=3936653739323138393635656237326339326135343964643561333330313132&version=1.4.6&macValue=55F5BA03AC37288BF122D1745832EE2D")
    Call<ResponseCode> get();
    //Call<T> get();//必须是这种形式,这是2.0之后的新形式
//我这里需要返回网页内容,不需要转换成Json数据,所以用了ResponseBody;
//你也可以使用Call<GsonBean> get();这样的话,需要添加Gson转换器...后续介绍
}

ResponseCode只是一个javabean

public class ResponseCode {
    public String respCode;
    public UserModel userModel;

    public UserModel getUserModel() {
        return userModel;
    }

    public void setUserModel(UserModel userModel) {
        this.userModel = userModel;
    }

    private String respMsg;

    public String getRespCode() {
        return respCode;
    }

    public void setRespCode(String respCode) {
        this.respCode = respCode;
    }



    public String getRespMsg() {
        return respMsg;
    }

    public void setRespMsg(String respMsg) {
        this.respMsg = respMsg;
    }
}

UserModel

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package cn.xinyu.com.myapplication;

import java.util.Date;

/**
 * 
 * @author zhengxiaoguang
 */
public class UserModel {

    private String uid;
    private String sessionId;
    private String nickName;
    private String mobile;
    private Date createdAt;
    private Date updatedAt;
    private Integer status;
    private String description;
    private Integer couponTotalAmount;
    private Integer cardsTotalAmount;
    private Integer newCouponAmount;
    private Integer couponObtainCount;
    private Integer billAmountWithCurMoth;
    private Integer flag;

    private String warmMessage;

    private Integer gradeCount;
    private Integer attenSinaCount;
    private Integer attenTencentCount;
    private Integer shareSinaCount;
    private Integer shareTencentCount;
    private Integer shareWeixinCount;

    private Integer cardAttenSinaCount;
    private Integer cardAttenTencentCount;
    private Integer cardShareSinaCount;
    private Integer cardShareTencentCount;
    private Integer cardShareWeixinCount;

    private Integer topPrize;

    private String qqAppKey;
    private String qqAppSecret;
    private String weiXinAppId;
    private String weiXinAppKey;
    private String sinaAppKey;
    private String sinaAppSecret;
    private long officialWeiboId;
    private String sharedSecret;
    private Integer isShareRecommender;

    private String orderId;
    private String rewId;

    // 缴费或者注册成功 获得的抽奖次数
    private Integer chanceOfShark;

    public Integer getChanceOfShark() {
        return chanceOfShark;
    }

    public void setChanceOfShark(Integer chanceOfShark) {
        this.chanceOfShark = chanceOfShark;
    }

    public String getOrderId() {
        return orderId;
    }

    public void setOrderId(String orderId) {
        this.orderId = orderId;
    }

    public String getRewId() {
        return rewId;
    }

    public void setRewId(String rewId) {
        this.rewId = rewId;
    }

    public UserModel() {
        super();
    }

    public UserModel(String uid, String sessionId, String mobile,
                     Integer status, Integer couponTotalAmount, Integer newCouponAmount,
                     Integer couponObtainCount) {
        this.uid = uid;
        this.sessionId = sessionId;
        this.mobile = mobile;
        this.status = status;
        this.couponTotalAmount = couponTotalAmount;
        this.newCouponAmount = newCouponAmount;
        this.couponObtainCount = couponObtainCount;
    }

    public UserModel(String uid, String sessionId, String mobile,
                     Integer status, Integer couponTotalAmount, Integer newCouponAmount,
                     Integer couponObtainCount, Integer topPrize) {
        this.uid = uid;
        this.sessionId = sessionId;
        this.mobile = mobile;
        this.status = status;
        this.couponTotalAmount = couponTotalAmount;
        this.newCouponAmount = newCouponAmount;
        this.couponObtainCount = couponObtainCount;
        this.topPrize = topPrize;
    }

    public Integer getCouponTotalAmount() {
        return couponTotalAmount;
    }

    public void setCouponTotalAmount(Integer couponTotalAmount) {
        this.couponTotalAmount = couponTotalAmount;
    }

    public Date getCreatedAt() {
        return createdAt;
    }

    public void setCreatedAt(Date createdAt) {
        this.createdAt = createdAt;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getMobile() {
        return mobile;
    }

    public void setMobile(String mobile) {
        this.mobile = mobile;
    }

    public String getNickName() {
        return nickName;
    }

    public void setNickName(String nickName) {
        this.nickName = nickName;
    }

    public String getSessionId() {
        return sessionId;
    }

    public void setSessionId(String sessionId) {
        this.sessionId = sessionId;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }

    public String getUid() {
        return uid;
    }

    public void setUid(String uid) {
        this.uid = uid;
    }

    public Date getUpdatedAt() {
        return updatedAt;
    }

    public void setUpdatedAt(Date updatedAt) {
        this.updatedAt = updatedAt;
    }

    public Integer getNewCouponAmount() {
        return newCouponAmount;
    }

    public void setNewCouponAmount(Integer newCouponAmount) {
        this.newCouponAmount = newCouponAmount;
    }

    public Integer getCouponObtainCount() {
        return couponObtainCount;
    }

    public void setCouponObtainCount(Integer couponObtainCount) {
        this.couponObtainCount = couponObtainCount;
    }

    public Integer getBillAmountWithCurMoth() {
        return billAmountWithCurMoth;
    }

    public void setBillAmountWithCurMoth(Integer billAmountWithCurMoth) {
        this.billAmountWithCurMoth = billAmountWithCurMoth;
    }

    public String getWarmMessage() {
        return warmMessage;
    }

    public void setWarmMessage(String warmMessage) {
        this.warmMessage = warmMessage;
    }

    public Integer getAttenSinaCount() {
        return attenSinaCount;
    }

    public void setAttenSinaCount(Integer attenSinaCount) {
        this.attenSinaCount = attenSinaCount;
    }

    public Integer getAttenTencentCount() {
        return attenTencentCount;
    }

    public void setAttenTencentCount(Integer attenTencentCount) {
        this.attenTencentCount = attenTencentCount;
    }

    public Integer getGradeCount() {
        return gradeCount;
    }

    public void setGradeCount(Integer gradeCount) {
        this.gradeCount = gradeCount;
    }

    public Integer getShareSinaCount() {
        return shareSinaCount;
    }

    public void setShareSinaCount(Integer shareSinaCount) {
        this.shareSinaCount = shareSinaCount;
    }

    public Integer getShareTencentCount() {
        return shareTencentCount;
    }

    public void setShareTencentCount(Integer shareTencentCount) {
        this.shareTencentCount = shareTencentCount;
    }

    public Integer getShareWeixinCount() {
        return shareWeixinCount;
    }

    public void setShareWeixinCount(Integer shareWeixinCount) {
        this.shareWeixinCount = shareWeixinCount;
    }

    public Integer getTopPrize() {
        return topPrize;
    }

    public void setTopPrize(Integer topPrize) {
        this.topPrize = topPrize;
    }

    public Integer getCardsTotalAmount() {
        return cardsTotalAmount;
    }

    public void setCardsTotalAmount(Integer cardsTotalAmount) {
        this.cardsTotalAmount = cardsTotalAmount;
    }

    public Integer getCardAttenSinaCount() {
        return cardAttenSinaCount;
    }

    public void setCardAttenSinaCount(Integer cardAttenSinaCount) {
        this.cardAttenSinaCount = cardAttenSinaCount;
    }

    public Integer getCardAttenTencentCount() {
        return cardAttenTencentCount;
    }

    public void setCardAttenTencentCount(Integer cardAttenTencentCount) {
        this.cardAttenTencentCount = cardAttenTencentCount;
    }

    public Integer getCardShareSinaCount() {
        return cardShareSinaCount;
    }

    public void setCardShareSinaCount(Integer cardShareSinaCount) {
        this.cardShareSinaCount = cardShareSinaCount;
    }

    public Integer getCardShareTencentCount() {
        return cardShareTencentCount;
    }

    public void setCardShareTencentCount(Integer cardShareTencentCount) {
        this.cardShareTencentCount = cardShareTencentCount;
    }

    public Integer getCardShareWeixinCount() {
        return cardShareWeixinCount;
    }

    public void setCardShareWeixinCount(Integer cardShareWeixinCount) {
        this.cardShareWeixinCount = cardShareWeixinCount;
    }

    public String getQqAppKey() {
        return qqAppKey;
    }

    public void setQqAppKey(String qqAppKey) {
        this.qqAppKey = qqAppKey;
    }

    public String getQqAppSecret() {
        return qqAppSecret;
    }

    public void setQqAppSecret(String qqAppSecret) {
        this.qqAppSecret = qqAppSecret;
    }

    public String getWeiXinAppId() {
        return weiXinAppId;
    }

    public void setWeiXinAppId(String weiXinAppId) {
        this.weiXinAppId = weiXinAppId;
    }

    public String getWeiXinAppKey() {
        return weiXinAppKey;
    }

    public void setWeiXinAppKey(String weiXinAppKey) {
        this.weiXinAppKey = weiXinAppKey;
    }

    public String getSinaAppKey() {
        return sinaAppKey;
    }

    public void setSinaAppKey(String sinaAppKey) {
        this.sinaAppKey = sinaAppKey;
    }

    public String getSinaAppSecret() {
        return sinaAppSecret;
    }

    public void setSinaAppSecret(String sinaAppSecret) {
        this.sinaAppSecret = sinaAppSecret;
    }

    public long getOfficialWeiboId() {
        return officialWeiboId;
    }

    public void setOfficialWeiboId(long officialWeiboId) {
        this.officialWeiboId = officialWeiboId;
    }

    public String getSharedSecret() {
        return sharedSecret;
    }

    public void setSharedSecret(String sharedSecret) {
        this.sharedSecret = sharedSecret;
    }

    public Integer getIsShareRecommender() {
        return isShareRecommender;
    }

    public void setIsShareRecommender(Integer isShareRecommender) {
        this.isShareRecommender = isShareRecommender;
    }

    public Integer getFlag() {
        return flag;
    }

    public void setFlag(Integer flag) {
        this.flag = flag;
    }

}

1. 使用

package cn.xinyu.com.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.widget.TextView;
import android.widget.Toast;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.squareup.okhttp.ResponseBody;

import java.io.IOException;

import butterknife.BindView;
import butterknife.ButterKnife;
import retrofit.Call;
import retrofit.Callback;
import retrofit.GsonConverterFactory;
import retrofit.Response;
import retrofit.Retrofit;

public class MainActivity extends AppCompatActivity {
    @BindView(R.id.tv)
    TextView textView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);

        //经过测试: baseUrl必须设置,如果 声明接口时@GET使用了完整的url路径,那么baseUrl就会被忽略,否则就是拼接url
        Gson gson = new GsonBuilder()
//        2013-09-14 16:45:29
                .setDateFormat("yyyy-MM-dd HH:mm:ss")
//                .setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")

                .create();
        Retrofit retrofit = new Retrofit.Builder().baseUrl("http://testopen.cebbank.com/")
                .addConverterFactory(GsonConverterFactory.create(gson))

                .build();//在这里可以添加 Gson转换器等;
        GetBaidu getBaidu = retrofit.create(GetBaidu.class);//使用上面声明的接口创建
        Call<ResponseCode> call = getBaidu.get();//获取一个Call,才可以执行请求

//

//异步请求....
        call.enqueue(new Callback<ResponseCode>() {//异步
//            @Override
//            public void onResponse(Response<ResponseBody> response, Retrofit retrofit) {
//                try {
//                    String body = response.body().string();//获取返回体的字符串
//                    Toast.makeText(MainActivity.this,body,Toast.LENGTH_LONG).show();
//                    textView.setText(body);
//
//                } catch (IOException e) {
//                    e.printStackTrace();
//                }
//            }

            @Override
            public void onResponse(Response<ResponseCode> response, Retrofit retrofit) {
                ResponseCode responseCode=response.body();
                textView.setText(responseCode.getUserModel().getQqAppKey());
            }

            @Override
            public void onFailure(Throwable t) {
                 Toast.makeText(MainActivity.this,"failed",Toast.LENGTH_LONG).show();
                textView.setText(t.toString());

            }
        });
    }
}

如果你的json里面有日期，那么要用个日期转换，不然就会
com.google.gson.JsonSyntaxException: 2013-09-14 16:45:29