android java 使用OKHttp3 get请求 , post请求 , 多文件上传 , 包看包会

1 首先需要创建一个OKHttpClient 

可以直接new一个  

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1. OkHttpClient client = new OkHttpClient()  

更多的是用builder构造一个 (那个addInterceptor方法是添加拦截器 , 可以不写,具体的baidu, bing, sogou)

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1. private void buildHttpClient(){  
2.         this.client = new OkHttpClient.Builder()  
3.                 .addInterceptor(new Interceptor() {  
4.                     public Response intercept(Chain chain) throws IOException {  
5.                         Request request = chain.request();  
6.                         Response response = chain.proceed(request);  
7.                         return response;  
8.                     }  
9.                 })  
10.                 .connectTimeout(4000, TimeUnit.MILLISECONDS)  
11.                 .readTimeout(4000,TimeUnit.MILLISECONDS)  
12.                 .writeTimeout(4000, TimeUnit.MILLISECONDS)  
13.                 .build();  
14. }  

2 GET 请求

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1. <strong>    </strong>private void get(){  
2.         /* 如果需要参数 , 在url后边拼接 :  ?a=aaa&b=bbb..... */  
3.         Request request = new Request.Builder().url("http://192.168.10.117:8080/test").build();  
4.         client.newCall(request).enqueue(new Callback() {  
5.             public void onResponse(Call call, final Response response) throws IOException {  
6.                 final String result = response.body().string();  
7.                 final boolean ok = response.isSuccessful();  
8.                 runOnUiThread(new Runnable() {  
9.                     public void run(){  
10.                         Toast.makeText(OKHttpActivity.this, result, Toast.LENGTH_SHORT).show();  
11.                     }  
12.                 });  
13.             }  
14.             public void onFailure(Call call, IOException e) {  
15.                 runOnUiThread(new Runnable() {  
16.                     public void run() {  
17.                         Toast.makeText(OKHttpActivity.this, "error", Toast.LENGTH_SHORT).show();  
18.                     }  
19.                 });  
20.             }  
21.         });  
22.     }  

3 POST 请求

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1. private void post(){  
2.     FormBody.Builder builder = new FormBody.Builder();  
3.     /* 添加两个参数 */  
4.     builder.add("p","我勒个去").add("a","hello");  
5.     FormBody body = builder.build();  
6.     Request request = new Request.Builder().url("http://192.168.10.117:8080/test").post(body).build();  
7.   
8.     /* 下边和get一样了 */  
9.     client.newCall(request).enqueue(new Callback() {  
10.         public void onResponse(Call call, Response response) throws IOException {  
11.             final  String bodyStr = response.body().string();  
12.             final boolean ok = response.isSuccessful();  
13.             runOnUiThread(new Runnable() {  
14.                 public void run() {  
15.                     if(ok){  
16.                         Toast.makeText(OKHttpActivity.this, bodyStr, Toast.LENGTH_SHORT).show();  
17.                     }else{  
18.                         Toast.makeText(OKHttpActivity.this, "server error : " + bodyStr, Toast.LENGTH_SHORT).show();  
19.                     }  
20.                 }  
21.             });  
22.         }  
23.         public void onFailure(Call call,final IOException e) {  
24.             runOnUiThread(new Runnable() {  
25.                 public void run() {  
26.                     Toast.makeText(OKHttpActivity.this, "error : "+e.toString(), Toast.LENGTH_SHORT).show();  
27.                 }  
28.             });  
29.         }  
30.     });  
31. }  

4 多文件上传

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private void upFile(){  
    /* 第一个要上传的file */  
    File file1 = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/a.jpg");  
    RequestBody fileBody1 = RequestBody.create(MediaType.parse("application/octet-stream") , file1);  
    String file1Name = "testFile1.txt";  
  
    /* 第二个要上传的文件,这里偷懒了,和file1用的一个图片 */  
    File file2 = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/a.jpg");  
    RequestBody fileBody2 = RequestBody.create(MediaType.parse("application/octet-stream") , file2);  
    String file2Name = "testFile2.txt";  
  
  
    /* form的分割线,自己定义 */  
    String boundary = "xx--------------------------------------------------------------xx";  
  
    MultipartBody mBody = new MultipartBody.Builder(boundary).setType(MultipartBody.FORM)  
            /* 上传一个普通的String参数 , key 叫 "p" */  
            .addFormDataPart("p" , "你大爷666")  
            /* 底下是上传了两个文件 */  
            .addFormDataPart("file" , file1Name , fileBody1)  
            .addFormDataPart("file" , file2Name , fileBody2)  
            .build();  
  
    /* 下边的就和post一样了 */  
    Request request = new Request.Builder().url("http://192.168.10.117:8080/test").post(mBody).build();  
    client.newCall(request).enqueue(new Callback() {  
        public void onResponse(Call call, Response response) throws IOException {  
            final  String bodyStr = response.body().string();  
            final boolean ok = response.isSuccessful();  
            runOnUiThread(new Runnable() {  
                public void run() {  
                    if(ok){  
                        Toast.makeText(OKHttpActivity.this, bodyStr, Toast.LENGTH_SHORT).show();  
                    }else{  
                        Toast.makeText(OKHttpActivity.this, "server error : " + bodyStr, Toast.LENGTH_SHORT).show();  
                    }  
                }  
            });  
        }  
        public void onFailure(Call call, final IOException e) {  
            runOnUiThread(new Runnable() {  
                public void run() {  
                    Toast.makeText(OKHttpActivity.this, e.toString(), Toast.LENGTH_SHORT).show();  
                }  
            });  
        }  
    });  
}