“多部分主体必须具有至少一部分". [英] "Multipart body must have at least one part"

问题描述

在上一个问题中(在Android上反应本地上传图片)用参数"FormData"描述了请求，但是我请求了不带数据的GET请求，并得到了相同的消息！

In previous asked question (react-native upload pictures on android) described request with param "FormData", but I requested GET request without data and got same message!

启用了ProGuard的本地本机应用程序= true

react-native app with ProGuard enabled = true

应用程序在首次请求时崩溃.

App crashed on first request.

06-16 14:00:30.971: E/AndroidRuntime(14321): java.lang.IllegalStateException: Multipart body must have at least one part.
06-16 14:00:30.971: E/AndroidRuntime(14321):    at okhttp3.MultipartBody$Builder.build(SourceFile:327)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at com.facebook.react.modules.network.NetworkingModule.sendRequest(SourceFile:309)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at java.lang.reflect.Method.invoke(Native Method)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at java.lang.reflect.Method.invoke(Method.java:372)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at com.facebook.react.bridge.BaseJavaModule$b.a(SourceFile:345)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at com.facebook.react.cxxbridge.JavaModuleWrapper.invoke(SourceFile:136)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at android.os.Handler.handleCallback(Handler.java:739)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at android.os.Handler.dispatchMessage(Handler.java:95)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at com.facebook.react.bridge.queue.a.dispatchMessage(SourceFile:31)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at android.os.Looper.loop(Looper.java:135)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(SourceFile:196)
06-16 14:00:30.971: E/AndroidRuntime(14321):    at java.lang.Thread.run(Thread.java:818)

更新:这是错误的部分，其中this._query是空对象:

Update: Here is wrong part, where this._query was empty object:

let fd = new FormData;
forEach(this._query, (value, key) => {
    fd.append(key, value)
});

params.body = fd;

推荐答案

多部分主体必须至少具有一部分. 此消息是关于fetch函数从JavaScript代码传递给Java中的替代函数的错误参数的信息.

Multipart body must have at least one part. This message is about wrong arguments for fetch function passed from JavaScript code to alternative function in Java.

我试图将正文传递为空的 FormData ，所以有关身体的信息不包含任何内容.

I tried to pass body as empty FormData, so message about body without any part of it.

这篇关于“多部分主体必须具有至少一部分".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！