xml：Invalid byte 2 of 2-byte UTF-8 sequence

xml解析错误：Invalid byte 2 of 2-byte UTF-8 sequence

在做接口解析时候出现的错误：Invalid byte 2 of 2-byte UTF-8 sequence. Nested exception: Invalid byte 2 of 2-byte UTF-8 sequence.



非常明显是在读取XML文件时候出现的编码问题。

在測试过程中发现。主要原因是xml文件里声明的编码与xml文件本身保存时的编码不一致。



如今解决的办法就有几个，主要说我測试过的两个方。

假设你是直接以文件的形式读取 能够更改XML文件里的 UTF-8编码 改为 GBK或GB2312 .

另一种可能是 你直接以URL 通过网络地址获取InputStream流形式读取 在转换成Document对象。这样的方法的解决的方法是先down 下来保存在本地。实现比較简单 用个OutputStream流写到你想保存的文件夹就可以。再解析down下来的文件 当中在 SAXReader saxReader = new SAXReader();

正常写法：

private ImpowerDeviceVo getResponseXml(String requestUrl, String requestXml) throws Exception

{

  if (StringUtils.isEmpty(requestUrl))

  {

   String message = "config-WebPortal.xml配置文件未配置,获取接口连接为空!";

   logger.debug(message);

   logger.error(message);

  }

 

  URL httpurl = new URL(requestUrl);

  HttpURLConnection httpConn = (HttpURLConnection) httpurl.openConnection();

  httpConn.setConnectTimeout(ImpowerXmlNodeName.connectTimeout);

  httpConn.setReadTimeout(ImpowerXmlNodeName.readTimeout);

  httpConn.setRequestMethod(ImpowerXmlNodeName.requestMethod);

  httpConn.setDoInput(true);

  // 将doOutput标志设置为true，指示应用程序要将数据写入URL连接。

httpConn.setDoOutput(true);

  OutputStream out = httpConn.getOutputStream();

  logger.debug("requestXml:" + requestXml);

  // 将參数写入URL接口连接

  out.write(requestXml.getBytes("utf-8"));

 

  SAXBuilder sax = new SAXBuilder();

  Document doc = sax.build(httpConn.getInputStream());

 

  // 获取到信息

  ImpowerDeviceVo impowerDeviceVo = this.getImpowerDeviceVoByDocument(doc);

 

  httpConn.disconnect();

  out.close();

return impowerDeviceVo;

}

改动方法例如以下：

造一个暂时文件保存所定的编码报文，然后读取，读取解析后关闭流，再删除文件，否则会报文件读取多误 read error

private ImpowerDeviceVo getResponseXml(String requestUrl, String requestXml) throws Exception

{

  if (StringUtils.isEmpty(requestUrl))

  {

   String message = "config-WebPortal.xml配置文件未配置,获取接口连接为空!";

   logger.debug(message);

   logger.error(message);

  }

 

  URL httpurl = new URL(requestUrl);

  HttpURLConnection httpConn = (HttpURLConnection) httpurl.openConnection();

  httpConn.setConnectTimeout(ImpowerXmlNodeName.connectTimeout);

  httpConn.setReadTimeout(ImpowerXmlNodeName.readTimeout);

  httpConn.setRequestMethod(ImpowerXmlNodeName.requestMethod);

  httpConn.setDoInput(true);

  // 将doOutput标志设置为true。指示应用程序要将数据写入URL连接。

httpConn.setDoOutput(true);

  OutputStream out = httpConn.getOutputStream();

  logger.debug("requestXml:" + requestXml);

  // 将參数写入URL接口连接

  out.write(requestXml.getBytes("utf-8"));

InputStream inputStream = httpConn.getInputStream();

  String fileName = "tempxml.xml";

 

  // 保存文件

  File f = new File(fileName);

  if (!f.exists())

  {

   f.createNewFile();

  }

  String xmlContent = readXmlStream(inputStream);

  System.out.println("进入-----------"+xmlContent);

  FileOutputStream fileOutputStream = new FileOutputStream(f);

  fileOutputStream.write(xmlContent.getBytes("utf-8"));

  fileOutputStream.close();

  // 打开文件

  f = new File(fileName);

  FileInputStream fileInputStream = new FileInputStream(f);

 

  SAXBuilder sax = new SAXBuilder();

//  Document doc = sax.build(httpConn.getInputStream());

  Document doc = sax.build(fileInputStream);

 

  // 获取到信息

  ImpowerDeviceVo impowerDeviceVo = this.getImpowerDeviceVoByDocument(doc);

 

  httpConn.disconnect();

  out.close();

  fileInputStream.close();

  f.delete();

return impowerDeviceVo;

}