OkHttp之post请求

最新推荐文章于 2025-11-03 13:52:00 发布

原创最新推荐文章于 2025-11-03 13:52:00 发布 · 7.7k 阅读

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本文详细介绍了如何使用OkHttp库在Android中发送POST请求，包括JSON、表单数据（文本、图文混传）和x-www-form-urlencoded格式的数据。通过示例代码展示了各种请求方式的实现，适用于不同的数据传输需求。

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post传json

String url = "";
OkHttpClient client = new OkHttpClient();
        
JSONObject jsonObject = new JSONObject();
try {
    jsonObject.put("username","admin");
    jsonObject.put("password","123456");
} catch (JSONException e) {
    e.printStackTrace();
}
        
RequestBody body = RequestBody.create(jsonObject.toString(),MediaType.parse("application/json;charset=utf-8"));
Request requst = new Request.Builder()
        .url(url)
        .post(body)
        .build();
client.newCall(requst).enqueue(new Callback() {
    @Override
    public void onFailure(@NotNull Call call, @NotNull IOException e) {
        Log.e(TAG, "onFailure: " + e );
    }

    @Override
    public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
        Log.e(TAG, "onResponse: " + response.body().string() );
    }
});

post传formdata（只传文本）

String url = "";
OkHttpClient client = new OkHttpClient();
RequestBody body = new MultipartBody.Builder()
        .addFormDataPart("username","admin")
        .addFormDataPart("password","123456")
        .build();

Request requst = new Request.Builder()
        .url(url)
        .post(formBody)
        .build();
client.newCall(requst).enqueue(new Callback() {
    @Override
    public void onFailure(@NotNull Call call, @NotNull IOException e) {
        Log.e(TAG, "onFailure: " + e );
    }

    @Override
    public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
        Log.e(TAG, "onResponse: " + response.body().string() );
    }
});

post传formdata（图文混传）

String url = "";
OkHttpClient client = new OkHttpClient();
        
File file = new File(getFilesDir() + "/your_file_name");
RequestBody filebody = RequestBody.create(MediaType.parse("image/png"),file);
RequestBody body = new MultipartBody.Builder()
        .addFormDataPart("username","admin")
        .addFormDataPart("password","123456")
        .addFormDataPart("file","filename",filebody)
        .build();

Request requst = new Request.Builder()
        .url(url)
        .post(body)
        .build();
client.newCall(requst).enqueue(new Callback() {
    @Override
    public void onFailure(@NotNull Call call, @NotNull IOException e) {
        Log.e(TAG, "onFailure: " + e );
    }

    @Override
    public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
        Log.e(TAG, "onResponse: " + response.body().string() );
    }
});

post传x-www-form-urlencoded

String url = "";
OkHttpClient client = new OkHttpClient();

FormBody formBody = new FormBody.Builder().build();
Request requst = new Request.Builder()
        .url(url)
        .post(formBody)
        .build();
client.newCall(requst).enqueue(new Callback() {
    @Override
    public void onFailure(@NotNull Call call, @NotNull IOException e) {
        Log.e(TAG, "onFailure: " + e );
    }

    @Override
    public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
        Log.e(TAG, "onResponse: " + response.body().string() );
    }
});

post啥也不传，以类似get的@Query方式请求

String url = "";
OkHttpClient client = new OkHttpClient();

Request requst = new Request.Builder()
         .url(url)
         .post(RequestBody.create("",null))
         .build();
         
client.newCall(requst).enqueue(new Callback() {
     @Override
     public void onFailure(@NotNull Call call, @NotNull IOException e) {
         Log.e(TAG, "onFailure: " + e );
     }

     @Override
     public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
         Log.e(TAG, "onResponse: " + response.body().string() );
     }
 });