如何从包含其他参数的响应中获取 JSON 对象列表答案

【问题标题】：How to get list of JSON objects from response including other parameter如何从包含其他参数的响应中获取 JSON 对象列表
【发布时间】：2019-10-05 18:43:49
【问题描述】：

我正在继续学习改造并希望处理来自服务器的响应。

Postman 的响应结构

{
    "succeeded": false,
    "errors": [
        {
            "code":"DuplicateUserName",
            "description":"User name 'XXX' is already taken."
        },
        {
            "code": "PasswordTooShort",
            "description": "Passwords must be at least 6 characters."
        },
        {
            "code": "PasswordRequiresLower",
            "description": "Passwords must have at least one lowercase ('a'-'z')."
        },
        {
            "code": "PasswordRequiresUpper",
            "description": "Passwords must have at least one uppercase ('A'-'Z')."
        }
    ]
}

POST 代码

Call<RegisterResponseModel> register(@Body UserJSONModel user);

注册响应模型

    private String succeeded;
    private ArrayList<String> errors;

我尝试使用 List、ArrayList 以及 String 和 evenn 序列化：

@SerializedName("errors")
@Expose

但无论尝试如何，我都会收到一些应该是 success=false 和错误列表的内容

‹      í˝`I–%&/mĘ{JőJ×ŕtˇ€`$Ř�@ěÁ�Íć’ěiG#)«*�ĘeVe]f@ĚíťĽ÷Ţ{ď˝÷Ţ{ď˝÷ş;ťN'÷ß˙?\fdlöÎJÚÉž!€ŞČ?~|?"~ńGÍz:ÍóY>űčŃyV6ůčŁĽ®«şůčŃ÷~ńGÓj–ôčŁ§ëUYLł6˙ŞÉëŮ"˙hôŃ,o¦u±j‹jI-đEş¤oŇŹ_eçă´hŇ¬¬ólvť¶ŮŰ|9ţč—|˙—

【问题讨论】：

标签： android json rest retrofit2

【解决方案1】：

您可以使用 ArrayList 错误解析该 json；

import java.util.List;

公共类 RegisterResponseModel {

private boolean succeded;
private List<Error> errors;

public boolean isSucceded() {
    return succeded;
}

public void setSucceded(boolean succeded) {
    this.succeded = succeded;
}

public List<Error> getErrors() {
    return errors;
}

public void setErrors(List<Error> errors) {
    this.errors = errors;
}

@Override
public String toString() {
    return "TestDTO [succeded=" + succeded + ", errors=" + errors + "]";
}

}

public class Error {

private String code;
private String description;

public String getCode() {
    return code;
}

public void setCode(String code) {
    this.code = code;
}

public String getDescription() {
    return description;
}

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

@Override
public String toString() {
    return "Error [code=" + code + ", description=" + description + "]";
}

}

【讨论】：

【解决方案2】：

不要像处理成功案例一样处理此案例。如果后端返回错误，您需要像错误一样处理它。我像这样为 okHttp 使用自定义拦截器

class ErrorInterceptor : Interceptor {

@Throws(IOException::class)
override fun intercept(chain: Interceptor.Chain): Response {
    val request = chain.request()
    val response = chain.proceed(request)
    if (<Check is repsonce fail>) {
        val body = response.body()
        body?.let(::parseBackendError) ?: throw IOException("Body is null")
    }
    return response
}

private fun parseBackendError(responseBody: ResponseBody) {
    <Parce your error list and throw exeption>
  }
}

【讨论】：

【解决方案3】：

将此添加到您的发布方法@FormUrlEncoded

【讨论】：