如何从Retrofit2获取字符串响应？ [英] How to get string response from Retrofit2?

问题描述

我正在做android，正在寻找一种方法来做一个超级基本的http GET / POST请求。我一直收到错误：

I am doing android, looking for a way to do a super basic http GET/POST request. I keep getting an error:

java.lang.IllegalArgumentException: Unable to create converter for class java.lang.String

网络服务：

public interface WebService {
    @GET("/projects")
    Call<String> jquery();
}

然后在我的java中：

then in my java:

    Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("https://jquery.org")
       // .addConverterFactory(GsonConverterFactory.create())
        .build();

    WebService service = retrofit.create(WebService.class);
    Call<String> signin = service.jquery();

    Toast.makeText(this, signin.toString(), Toast.LENGTH_LONG).show();

我真的只是试图用GET请求查询jquery.org/projects并返回String它回应。有什么问题？

I'm literally just trying to query jquery.org/projects with a GET request and return the String that it responds with. What is wrong?

如果我尝试实现一个自定义转换器（我在网上找到了一些例子）它抱怨我没有实现抽象方法转换（ F），其中没有一个例子。

If I try to implement a custom Converter (I've found a few examples online) it complains that I didn't implement the abstract method convert(F), which none of the examples do.

谢谢。

推荐答案

使用Retrofit2将ScalarsConverterFactory添加到您的Retrofit.Builder。

With Retrofit2 add ScalarsConverterFactory to your Retrofit.Builder.

adapterBuilder = new Retrofit.Builder()
               .addConverterFactory(ScalarsConverterFactory.create())
               .addConverterFactory(GsonConverterFactory.create());

使用ScalarsCoverter将以下依赖项添加到构建级别

To use ScalarsCoverter add following dependency to your build graddle

compile 'com.squareup.retrofit2:converter-scalars:2.1.0'
compile 'com.squareup.retrofit2:retrofit:2.1.0' //Adding Retrofit2

对于API使用：``

Call <String> *****

Android代码：

Android Code :

.enqueue(new Callback<String>() {
    @Override
    public void onResponse(Call<String> call, Response<String> response) {
        Log.i("Response", response.body().toString());
        //Toast.makeText()
        if (response.isSuccessful()){
            if (response.body() != null){
                Log.i("onSuccess", response.body().toString());
            }else{
                Log.i("onEmptyResponse", "Returned empty response");//Toast.makeText(getContext(),"Nothing returned",Toast.LENGTH_LONG).show();
            }
        }

这篇关于如何从Retrofit2获取字符串响应？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！