0

希望在这里提出这样的问题是有意义的：

我有一个 python3 api，它使用 Flask 提供服务。我还有一个 clojure 应用程序，它发出针对 python3 api 的发布请求。为此，我将clj-http与以下内容一起使用：

(client/post url-link
             {:basic-auth ["username"
                           "password"]
              :form-params json
              :content-type :json})

现在，当我在本地为 python3 api 服务的机器上进行测试时，即

(def url-link "localhost:port/api-name")

它工作顺利。问题来了，因为我将从亚马逊服务器提供 python3 api。所以我的想法是使用亚马逊服务器的链接。但是当我这样做时，clojure 会抱怨

HTTP ERROR 500 clojure.lang.ExceptionInfo: Malformed application/json in :muuntaja/encode {:type :muuntaja/encode, :format "application/json"}
URI:    /api/sell-call
STATUS: 500
MESSAGE:    clojure.lang.ExceptionInfo: Malformed application/json in :muuntaja/encode {:type :muuntaja/encode, :format "application/json"}
SERVLET:    -
CAUSED BY:  clojure.lang.ExceptionInfo: Malformed application/json in :muuntaja/encode {:type :muuntaja/encode, :format "application/json"}
CAUSED BY:  com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.UnsupportedOperationException) (through reference chain: clojure.lang.PersistentArrayMap[":full_message"]->clojure.lang.ExceptionInfo["data"]->clojure.lang.PersistentHashMap[":http-client"]->org.apache.http.impl.client.InternalHttpClient["params"])
CAUSED BY:  java.lang.UnsupportedOperationException
clojure.lang.ExceptionInfo: Malformed application/json in :muuntaja/encode {:type :muuntaja/encode, :format "application/json"}
    at muuntaja.core$on_exception.invokeStatic(core.clj:284)
    at muuntaja.core$on_exception.invoke(core.clj:267)
    at clojure.core$partial$fn__5824.invoke(core.clj:2626)
    at muuntaja.core$create_coder$encode__10562.invoke(core.clj:346)
    at clojure.core$update.invokeStatic(core.clj:6198)
    at clojure.core$update.invoke(core.clj:6188)
    at muuntaja.core$create$_handle_response__10629.invoke(core.clj:443)
    at muuntaja.core$create$reify__10631.format_response(core.clj:486)
    at muuntaja.middleware$wrap_format_response$fn__10702.invoke(middleware.clj:132)
    at muuntaja.middleware$wrap_format_negotiate$fn__10695.invoke(middleware.clj:96)
    at ring.middleware.keyword_params$wrap_keyword_params$fn__9403.invoke(keyword_params.clj:53)
    at ring.middleware.nested_params$wrap_nested_params$fn__9461.invoke(nested_params.clj:89)
    at ring.middleware.params$wrap_params$fn__9535.invoke(params.clj:67)
    at compojure.api.middleware$wrap_inject_data$fn__11689.invoke(middleware.clj:96)
    at compojure.api.routes.Route.invoke(routes.clj:89)
    at ring.middleware.basic_authentication$wrap_basic_authentication$fn__16405.invoke(basic_authentication.clj:157)
    at clojure.lang.Var.invoke(Var.java:384)
    at ring.middleware.reload$wrap_reload$fn__1065.invoke(reload.clj:39)
    at ring.adapter.jetty$proxy_handler$fn__480.invoke(jetty.clj:27)
    at ring.adapter.jetty.proxy$org.eclipse.jetty.server.handler.AbstractHandler$ff19274a.handle(Unknown Source)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
    at org.eclipse.jetty.server.Server.handle(Server.java:500)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:386)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:562)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:378)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:270)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.UnsupportedOperationException) (through reference chain: clojure.lang.PersistentArrayMap[":full_message"]->clojure.lang.ExceptionInfo["data"]->clojure.lang.PersistentHashMap[":http-client"]->org.apache.http.impl.client.InternalHttpClient["params"])
    at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:394)
    at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:353)
    at com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:316)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:727)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeFields(MapSerializer.java:722)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:643)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:33)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:727)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeFields(MapSerializer.java:722)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:643)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:33)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
    at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3905)
    at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsBytes(ObjectMapper.java:3243)
    at jsonista.core$write_value_as_bytes.invokeStatic(core.clj:229)
    at jsonista.core$write_value_as_bytes.invoke(core.clj:221)
    at muuntaja.format.json$encoder$reify__10016.encode_to_bytes(json.clj:43)
    at muuntaja.core$create_coder$encode__10562.invoke(core.clj:344)
    ... 28 more
Caused by: java.lang.UnsupportedOperationException
    at org.apache.http.impl.client.InternalHttpClient.getParams(InternalHttpClient.java:211)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:688)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719)
    ... 46 more
com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.UnsupportedOperationException) (through reference chain: clojure.lang.PersistentArrayMap[":full_message"]->clojure.lang.ExceptionInfo["data"]->clojure.lang.PersistentHashMap[":http-client"]->org.apache.http.impl.client.InternalHttpClient["params"])
    at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:394)
    at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:353)
    at com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:316)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:727)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeFields(MapSerializer.java:722)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:643)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:33)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:727)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeFields(MapSerializer.java:722)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:643)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:33)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
    at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3905)
    at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsBytes(ObjectMapper.java:3243)
    at jsonista.core$write_value_as_bytes.invokeStatic(core.clj:229)
    at jsonista.core$write_value_as_bytes.invoke(core.clj:221)
    at muuntaja.format.json$encoder$reify__10016.encode_to_bytes(json.clj:43)
    at muuntaja.core$create_coder$encode__10562.invoke(core.clj:344)
    at clojure.core$update.invokeStatic(core.clj:6198)
    at clojure.core$update.invoke(core.clj:6188)
    at muuntaja.core$create$_handle_response__10629.invoke(core.clj:443)
    at muuntaja.core$create$reify__10631.format_response(core.clj:486)
    at muuntaja.middleware$wrap_format_response$fn__10702.invoke(middleware.clj:132)
    at muuntaja.middleware$wrap_format_negotiate$fn__10695.invoke(middleware.clj:96)
    at ring.middleware.keyword_params$wrap_keyword_params$fn__9403.invoke(keyword_params.clj:53)
    at ring.middleware.nested_params$wrap_nested_params$fn__9461.invoke(nested_params.clj:89)
    at ring.middleware.params$wrap_params$fn__9535.invoke(params.clj:67)
    at compojure.api.middleware$wrap_inject_data$fn__11689.invoke(middleware.clj:96)
    at compojure.api.routes.Route.invoke(routes.clj:89)
    at ring.middleware.basic_authentication$wrap_basic_authentication$fn__16405.invoke(basic_authentication.clj:157)
    at clojure.lang.Var.invoke(Var.java:384)
    at ring.middleware.reload$wrap_reload$fn__1065.invoke(reload.clj:39)
    at ring.adapter.jetty$proxy_handler$fn__480.invoke(jetty.clj:27)
    at ring.adapter.jetty.proxy$org.eclipse.jetty.server.handler.AbstractHandler$ff19274a.handle(Unknown Source)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
    at org.eclipse.jetty.server.Server.handle(Server.java:500)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:386)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:562)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:378)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:270)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.UnsupportedOperationException
    at org.apache.http.impl.client.InternalHttpClient.getParams(InternalHttpClient.java:211)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:688)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719)
    ... 46 more
java.lang.UnsupportedOperationException
    at org.apache.http.impl.client.InternalHttpClient.getParams(InternalHttpClient.java:211)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:688)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeFields(MapSerializer.java:722)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:643)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:33)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:727)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:155)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeFields(MapSerializer.java:722)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:643)
    at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:33)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
    at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3905)
    at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsBytes(ObjectMapper.java:3243)
    at jsonista.core$write_value_as_bytes.invokeStatic(core.clj:229)
    at jsonista.core$write_value_as_bytes.invoke(core.clj:221)
    at muuntaja.format.json$encoder$reify__10016.encode_to_bytes(json.clj:43)
    at muuntaja.core$create_coder$encode__10562.invoke(core.clj:344)
    at clojure.core$update.invokeStatic(core.clj:6198)
    at clojure.core$update.invoke(core.clj:6188)
    at muuntaja.core$create$_handle_response__10629.invoke(core.clj:443)
    at muuntaja.core$create$reify__10631.format_response(core.clj:486)
    at muuntaja.middleware$wrap_format_response$fn__10702.invoke(middleware.clj:132)
    at muuntaja.middleware$wrap_format_negotiate$fn__10695.invoke(middleware.clj:96)
    at ring.middleware.keyword_params$wrap_keyword_params$fn__9403.invoke(keyword_params.clj:53)
    at ring.middleware.nested_params$wrap_nested_params$fn__9461.invoke(nested_params.clj:89)
    at ring.middleware.params$wrap_params$fn__9535.invoke(params.clj:67)
    at compojure.api.middleware$wrap_inject_data$fn__11689.invoke(middleware.clj:96)
    at compojure.api.routes.Route.invoke(routes.clj:89)
    at ring.middleware.basic_authentication$wrap_basic_authentication$fn__16405.invoke(basic_authentication.clj:157)
    at clojure.lang.Var.invoke(Var.java:384)
    at ring.middleware.reload$wrap_reload$fn__1065.invoke(reload.clj:39)
    at ring.adapter.jetty$proxy_handler$fn__480.invoke(jetty.clj:27)
    at ring.adapter.jetty.proxy$org.eclipse.jetty.server.handler.AbstractHandler$ff19274a.handle(Unknown Source)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
    at org.eclipse.jetty.server.Server.handle(Server.java:500)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:386)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:562)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:378)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:270)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
    at java.base/java.lang.Thread.run(Thread.java:834)
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那么，是否可以说我做错了什么？有没有办法从客户端解决它？

注意：问题是这是我工作中的代码，我不想分享其中的很多细节。我问是因为也许我错过了一个简单的解决方案。如果这个问题在这里没有意义，请告诉我，我将删除它。

我很感激任何帮助！

4

1 回答 1

0

我已经弄清楚发生了什么。亚马逊服务器中的 python 应用程序出现内部错误，所以当它返回到 clojure 应用程序时，它不知道如何将错误转换为 JSON（这是预期的）。因此解决方案是处理 python 应用程序中的错误以返回有关该问题的 JSON。

在我的本地机器上工作，因为我有所有非 python 依赖项来使应用程序工作。谢谢您的帮助！

于 2020-03-20T12:03:35.670 回答