Java + unicode + HttpServletResponse =失败

我试图确保我的数据路径 - 一个Tomcat servlet通过JDBC将数据导入/导出MySQL数据库 - 直接处理Unicode。Java + unicode + HttpServletResponse =失败

我已经能够验证我可以从数据库读取/写入Unicode。（当我在Eclipse中调试Tomcat时，我看到了从数据库中正确检索到的结果。）但是当我将浏览器指向Tomcat servlet时，类似“Garc＆iacute; a”（= Garci {U + 0301} a）的字符串变成“Garci？a”在浏览器中。

我使用这段代码初始化XML输出（request和response是，它使用XMLStreamWriter，我宣布结果为UTF-8：

final protected HttpServletRequest request; 
final protected HttpServletResponse response; 
    ... 

boolean handleRefreshMetadata() 
{ 
    String s = request.getParameter("ids"); 
    Integer id = Integer.parseInt(s); 
    boolean b = refreshMetadata(id); 
    response.setContentType("text/xml"); 
    try { 
     PrintWriter writer = response.getWriter(); 
     XMLOutputFactory factory = XMLOutputFactory.newInstance(); 
     XMLStreamWriter xmlwriter = factory.createXMLStreamWriter(writer);  

     xmlwriter.writeStartDocument("UTF-8", "1.0"); 
     xmlwriter.writeStartElement("response"); 
     xmlwriter.writeAttribute("success", b ? "true" : "false"); 
     if (b && (id != null)) 
     { 
      loadArticleFromID(getConnection(), xmlwriter, id); 
     } 
     xmlwriter.writeEndDocument(); 
     xmlwriter.flush(); 
     xmlwriter.close(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } catch (XMLStreamException e) { 
     e.printStackTrace(); 
    } 
    catch (SQLException e) { 
     e.printStackTrace(); 
    } 
    return b; 
}

我缺少的东西

来源

2012-02-28 Jason S

Darnit，我想通了：

，而不是

response.setContentType("text/xml");

我需要做的：

response.setContentType("text/xml; charset=utf-8");

来源

2012-02-28 22:46:05

您的内容不是Unicode编码。对响应内容进行编码，如下所示：

final javax.servlet.http.HttpServletResponse resp = (HttpServletResponse)ctx.getExternalContext().getResponse(); 

byte[] k =xml.getBytes(UTF8_CHARSET); // xml is the string with unicode content 

resp.setContentType("text/xml"); 
resp.setContentLength(k.length); 
resp.getOutputStream().write(k); 
resp.getOutputStream().flush(); 
resp.getOutputStream().close();

来源

2015-03-04 13:33:13

Java + unicode + HttpServletResponse =失败

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