【移動應用開發(fā)技術】Android中Retrofit 2.0如何使用JSON進行數(shù)據(jù)交互

【移動應用開發(fā)技術】Android中Retrofit2.0如何使用JSON進行數(shù)據(jù)交互

package

work.http;

import

java.util.Map;

import

okhttp3.RequestBody;

import

okhttp3.ResponseBody;

import

retrofit2.Call;

import

retrofit2.http.Body;

import

retrofit2.http.GET;

import

retrofit2.http.POST;

import

retrofit2.http.QueryMap;

import

retrofit2.http.Url;

/**

*

Created

by

wangyuhang@

on

2017/8/23

0023.

*/

public

interface

RetrofitServiceApi

{

@POST

Call<ResponseBody>

reqPost(@Url

String

url,

@Body

RequestBody

requestBody);

@GET

Call<ResponseBody>

reqGet(@Url

String

url,

@QueryMap

Map<String,

String>

options);

@GET

Call<ResponseBody>

reqGet(@Url

String

url);

}package

work.http;

import

android.util.Log;

import

java.io.IOException;

import

java.util.Map;

import

okhttp3.MediaType;

import

okhttp3.RequestBody;

import

okhttp3.ResponseBody;

import

retrofit2.Call;

import

retrofit2.Callback;

import

retrofit2.Response;

import

retrofit2.Retrofit;

import

retrofit2.converter.gson.GsonConverterFactory;

/**

*

Created

by

wangyuhang@

on

2017/7/12

0012.

*/

public

class

HttpClient

{

private

static

final

String

TAG

=

"HttpClient";

private

static

volatile

HttpClient

instance;

private

HttpClient()

{

}

public

static

HttpClient

getInstance()

{

if

(instance

==

null)

{

synchronized

(HttpClient.class)

{

if

(instance

==

null)

{

instance

=

new

HttpClient();

}

}

}

return

instance;

}

/**

*

Http

Post請求

*

*

@param

req_id

請求編號

*

@param

method

請求業(yè)務方法

*

@param

url

請求的URL

*

@param

jsonData

POST需要所帶參數(shù)(JSON串格式)

*

@param

callback

回調(diào)接口

*/

public

void

reqPostHttp(final

int

req_id,

final

String

method,

String

url,

String

jsonData,

final

HttpCallback

callback)

{

Retrofit

retrofit

=

new

Retrofit.Builder()

.baseUrl("/")

.addConverterFactory(GsonConverterFactory.create())

.build();

RetrofitServiceApi

retrofitServiceApi

=

retrofit.create(RetrofitServiceApi.class);

RequestBody

body

=

RequestBody.create(MediaType.parse("application/json;

charset=utf-8"),

jsonData);

Call<ResponseBody>

call

=

retrofitServiceApi.reqPost(url,

body);

call.enqueue(new

Callback<ResponseBody>()

{

@Override

public

void

onResponse(Call<ResponseBody>

call,

Response<ResponseBody>

response)

{

try

{

String

result

=

response.body().string();

Log.i(TAG,

"reqPostHttp

onResponse:

"

+

result);

if

(callback

!=

null)

{

callback.onSuccess(new

HttpResMsg(req_id,

method,

result));

}

}

catch

(IOException

e)

{

e.printStackTrace();

Log.e(TAG,

"reqPostHttp

onResponse

exception:

"

+

e.toString());

if

(callback

!=

null)

{

callback.onError(e.toString());

}

}

}

@Override

public

void

onFailure(Call<ResponseBody>

call,

Throwable

t)

{

Log.e(TAG,

"reqPostHttp

onFailure:

"

+

t.toString());

if

(callback

!=

null)

{

callback.onError(t.toString());

}

}

});

}

/**

*

Http

Get請求

*

*

@param

req_id

請求編號

*

@param

method

請求業(yè)務方法

*

@param

url

請求的URL

*

@param

options

GET需要所帶參數(shù)鍵值(如果URL里帶有則不需要在此添加)

*

@param

callback

回調(diào)接口

*/

public

void

reqGetHttp(final

int

req_id,

final

String

method,

String

url,

Map<String,

String>

options,

final

HttpCallback

callback)

{

Retrofit

retrofit

=

new

Retrofit.Builder()

.baseUrl("/")

.addConverterFactory(GsonConverterFactory.create())

.build();

RetrofitServiceApi

retrofitServiceApi

=

retrofit.create(RetrofitServiceApi.class);

Call<ResponseBody>

call

=

null;

if

(options

==

null)

{

call

=

retrofitServiceApi.reqGet(url);

}

else

{

call

=

retrofitServiceApi.reqGet(url,

options);

}

call.enqueue(new

Callback<ResponseBody>()

{

@Override

public

void

onResponse(Call<ResponseBody>

call,

Response<ResponseBody>

response)

{

try

{

String

result

=

response.body().string();

Log.i(TAG,

"reqPostHttp

onResponse:

"

+

result);

if

(callback

!=

null)

{

callback.onSuccess(new

HttpResMsg(req_id,

method,

result));

}

}

catch

(IOException

e)

{

e.printStackTrace();

Log.e(TAG,

"reqPostHttp

onResponse

exception:

"

+

e.toString());

if

(callback

!=

null)

{

callback.onError(e.toString());

}

}

}

@Override

public

void

onFailure(Call<ResponseBody>

call,

Throwable

t)

{

Log.e(TAG,

"reqPostHttp

onFailure:

"

+

t.toString());

if

(callback

!=

null)

{

callback.onError(t.toString());

}

}

});

}

}baseUrl(/)Retrofit

retrofit

=

new

Retrofit.Builder()

.baseUrl("38:8081/course_api/wares/hot?pageSize=1&curPage=1")

.addConverterFactory(GsonConverterFactory.create())

.build();Retrofit

retrofit

=

new

Retrofit.Builder()

.baseUrl("38:8081/course_api/wares/hot?pageSize=1&curPage=1/")

.addConverterFactory(GsonConverterFactory.create())

.build();/upload/information/20200623/125/126713.png/upload/information/20200623/125/126714.pngpackage

work.http;

/**

*

Created

by

wangyuhang@

on

2017/8/23

0023.

*/

public

interface

HttpCallback

{

void

onSuccess(HttpResMsg

httpResMsg);

void

onError(String

errorMsg);

}package

work.http;

/**

*

Created

by

wangyuhang@

on

2017/8/23

0023.

*/

public

class

HttpResMsg

{

privat