编码问题之:java.io.UTFDataFormatException: Invalid byte 2 of 2-byte UTF-8 sequence.

今天在编码的时候遇到如下问题

java.io.UTFDataFormatException: Invalid byte 2 of 2-byte UTF-8 sequence.

函数源码：

 static InputStream String2InputStream(String str) throws Exception{
     ByteArrayInputStream stream = new ByteArrayInputStream()
     return stream;
 }

实现的功能将一个xml字符串转换为Stream类型。

调用时的源码

  String ExpXmlText ="<?xml version=\"1.0\" encoding=\"utf-8\"?><AppSubscResult>" +
    "  <appId>elbert_app_dsc005</appId>" +
    "  <longId>wangwang101112347</longId>" +
    "  <time>1236235618357</time>" +
    "  <sign>a2e82a649b38ad10790160ec40e282af</sign>" +
    "  <result>Yes</result>" +
    "  <subscUserId>elb_aui_005</subscUserId>" +
    "  <appInstanceId>USER8B38B4C13EFE7276F75889E3123C4428</appInstanceId>" +
    "  <gmtStart>"+util.TimeHelp.getTimestamp_BeforeNDay(65)+" 00:00:00</gmtStart>" +
    "  <gmtEnd>"+util.TimeHelp.getTimestamp_BeforeNDay(7)+" 23:59:59</gmtEnd>" +
    "  <subscUrl>http://mall.alisoft.com/apps/subsc/subscDisplay!execute.jspa?appId=elbert_app_dsc005</subscUrl>" +
    "  <errorMessage>" +
    "</errorMessage>" +
    "</AppSubscResult>";

调用

String2InputStream(ExpXmlText )；

结果报：

java.io.UTFDataFormatException: Invalid byte 2 of 2-byte UTF-8 sequence.

经查时由于声明的ExpXmlText 是UTF-8编码的，而转换的时候使用默认的编码是gbk的

查明原因后，将原函数修订如下

 static InputStream String2InputStream(String str) throws Exception{
     ByteArrayInputStream stream = new ByteArrayInputStream(str.getBytes("utf-8"));
     return stream;
 }

问题解决