杰克逊JsonParseException：无效的UTF-8的高字节

问题描述

在杰克逊引擎试图解析来自服务器的JSON响应此错误发生。我使用Spring的Andr​​oid以连载/ deserialise对象和JSON。这个问题似乎是相关的默认编码UTF-8。

是否有人知道如何告诉它应该期待的东西从UTF-8回，如UTF-16不同的引擎吗？

  HttpHeaders requestHeaders = createSomeHeader（）;
RestTemplate restTemplate =新RestTemplate（）;
HttpEntity＆LT;＆GT; requestEntity =新HttpEntity＆LT;对象＆gt;（requestHeaders）;
字符串URL =someurl
ResponseEntity＆LT;为MyObject []＆GT; arrayResponseEntity = restTemplate.exchange（URL，HttpMethod.GET，requestEntity，为MyObject []类。）;
 

错误日志：

 产生的原因：org.springframework.http.converter.HttpMessageNotReadableException：无法读取JSON：无效的UTF-8的高字节为0x20
在[来源：org.apache.http.conn.EofSensorInputStream@44d397b0;行：92，列：42]。嵌套例外是组织codehaus.jackson.JsonParseException：无效的UTF-8的高字节为0x20
在[来源：org.apache.http.conn.EofSensorInputStream@44d397b0;行：92，列：42]
在org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.readInternal(MappingJacksonHttpMessageConverter.java:138)
在org.springframework.http.converter.AbstractHttpMessageConverter.read(AbstractHttpMessageConverter.java:154)
在org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:74)
在org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:622)
在org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:608)
在org.springframework.web.client.RestTemplate.doExecute（RestTemplate.java:449）
在org.springframework.web.client.RestTemplate.execute（RestTemplate.java:404）
在org.springframework.web.client.RestTemplate.exchange（RestTemplate.java:380）
... 4个
产生的原因：组织codehaus.jackson.JsonParseException：无效的UTF-8的高字节为0x20
在[来源：org.apache.http.conn.EofSensorInputStream@44d397b0;行：92，列：42]
在有机codehaus.jackson.JsonParser._constructError（JsonParser.java:1213）
在有机codehaus.jackson.impl.JsonParserMinimalBase._reportError（JsonParserMinimalBase.java:375）
在有机codehaus.jackson.impl.Utf8StreamParser._reportInvalidOther（Utf8StreamParser.java:2132）
在有机codehaus.jackson.impl.Utf8StreamParser._reportInvalidOther（Utf8StreamParser.java:2139）
在有机codehaus.jackson.impl.Utf8StreamParser._de codeUtf8_3fast（Utf8StreamParser.java:1962）
 

解决方案

JSON数据必须是EN codeD为UTF-8，UTF-16或UTF-32。该JSON德codeR可以通过确定编码检查前四个字节流的：

  00 00 00 XX UTF-32BE
       00 XX XX 00 UTF-16BE
       XX 00 00 00 UTF-32LE
       XX XX 00 00 UTF-16LE
       xx月xx月xx UTF-8
 

这听起来像服务器是在一些非法编码编码数据（ISO-8859-1，窗口1252，等等。）

This error happens when the jackson engine tries to parse the json response from the server.I am using Spring Android to serialise/deserialise objects to and from json.This problem seems to be related to the default encoding UTF-8.

Does someone know how to tell the engine that it should expect something different from UTF-8 back such as UTF-16?

HttpHeaders requestHeaders = createSomeHeader();
RestTemplate restTemplate = new RestTemplate();
HttpEntity<?> requestEntity = new HttpEntity<Object>(requestHeaders);
String url = "someurl"
ResponseEntity<MyObject[]> arrayResponseEntity = restTemplate.exchange(url, HttpMethod.GET, requestEntity, MyObject[].class);

error log:

Caused by: org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: Invalid UTF-8 middle byte 0x20
at [Source: org.apache.http.conn.EofSensorInputStream@44d397b0; line: 92, column: 42]; nested exception is org.codehaus.jackson.JsonParseException: Invalid UTF-8 middle byte 0x20
at [Source: org.apache.http.conn.EofSensorInputStream@44d397b0; line: 92, column: 42]
at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.readInternal(MappingJacksonHttpMessageConverter.java:138)
at org.springframework.http.converter.AbstractHttpMessageConverter.read(AbstractHttpMessageConverter.java:154)
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:74)
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:622)
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:608)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:449)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:404)
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:380)
... 4 more
Caused by: org.codehaus.jackson.JsonParseException: Invalid UTF-8 middle byte 0x20
at [Source: org.apache.http.conn.EofSensorInputStream@44d397b0; line: 92, column: 42]
at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1213)
at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:375)
at org.codehaus.jackson.impl.Utf8StreamParser._reportInvalidOther(Utf8StreamParser.java:2132)
at org.codehaus.jackson.impl.Utf8StreamParser._reportInvalidOther(Utf8StreamParser.java:2139)
at org.codehaus.jackson.impl.Utf8StreamParser._decodeUtf8_3fast(Utf8StreamParser.java:1962)

解决方案

JSON data must be encoded as UTF-8, UTF-16 or UTF-32. The JSON decoder can determine the encoding by examining the first four octets of the byte stream:

       00 00 00 xx  UTF-32BE
       00 xx 00 xx  UTF-16BE
       xx 00 00 00  UTF-32LE
       xx 00 xx 00  UTF-16LE
       xx xx xx xx  UTF-8

It sounds like the server is encoding data in some illegal encoding (ISO-8859-1, windows-1252, etc.)

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