[英]Java encoding from UTF-8 to ISO-8859-1 into a XML file
我一直在尝试将UTF-8字符串转换为其ISO-8859-1中的相对字符串,以便将其输出到XML文档中,无论我如何尝试,输出总是错误地显示。
为了简化问题,我创建了包含所有测试的代码段,然后在生成的文档之后进行复制/粘贴。
您还可以确保通过切换UTF和ISO,有时还通过设置相同的值,尝试了新String(xxx.getBytes("UTF-8"), "ISO-8859-1")
之间的所有可能组合。 没用!
这是代码段:
// @see http://stackoverflow.com/questions/229015/encoding-conversion-in-java
private static String changeEncoding(String input) throws Exception {
// Create the encoder and decoder for ISO-8859-1
Charset charset = Charset.forName("ISO-8859-1");
CharsetDecoder decoder = charset.newDecoder();
CharsetEncoder encoder = charset.newEncoder();
// Convert a string to ISO-LATIN-1 bytes in a ByteBuffer
// The new ByteBuffer is ready to be read.
ByteBuffer bbuf = encoder.encode(CharBuffer.wrap(input));
// Convert ISO-LATIN-1 bytes in a ByteBuffer to a character ByteBuffer and then to a string.
// The new ByteBuffer is ready to be read.
CharBuffer cbuf = decoder.decode(bbuf);
return cbuf.toString();
}
// @see http://stackoverflow.com/questions/655891/converting-utf-8-to-iso-8859-1-in-java-how-to-keep-it-as-single-byte
private static String byteEncoding(String input) throws Exception {
Charset utf8charset = Charset.forName("UTF-8");
Charset iso88591charset = Charset.forName("ISO-8859-1");
ByteBuffer inputBuffer = ByteBuffer.wrap(input.getBytes());
// decode UTF-8
CharBuffer data = utf8charset.decode(inputBuffer);
// encode ISO-8559-1
ByteBuffer outputBuffer = iso88591charset.encode(data);
byte[] outputData = outputBuffer.array();
return new String(outputData, "ISO-8859-1");
}
public static Result home() throws Exception {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
//root elements
Document doc = docBuilder.newDocument();
doc.setXmlVersion("1.0");
doc.setXmlStandalone(true);
Element rootElement = doc.createElement("test");
doc.appendChild(rootElement);
rootElement.setAttribute("original", "héllo");
rootElement.setAttribute("stringToString", new String("héllo".getBytes("UTF-8"), "ISO-8859-1"));
rootElement.setAttribute("stringToBytes", changeEncoding("héllo"));
rootElement.setAttribute("stringToBytes2", byteEncoding("héllo"));
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.ENCODING, "ISO-8859-1");
StringWriter writer = new StringWriter();
transformer.transform(new DOMSource(doc), new StreamResult(writer));
String output = writer.getBuffer().toString().replaceAll("\n|\r", "");
// The following is Play!Framework specifics for rendering an url, but I believe this is not the problem (I checked in the developer console, the document is correctly in "ISO-8859-1"
response().setHeader("Content-Type", "text/xml; charset=ISO-8859-1");
return ok(output).as("text/xml");
}
结果:
<?xml version="1.0" encoding="ISO-8859-1"?>
<test original="héllo" stringToBytes="héllo" stringToBytes2="héllo" stringToString="héllo"/>
我该如何进行?
由于某种原因,我无法解释,通过写入文件并将此文件返回到输出解决了编码问题。
我决定保留此问题,以防其他人遇到类似问题。
这是代码段:
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.ENCODING, "ISO-8859-1");
File file = new File("Path/to/file.xml");
transformer.transform(new DOMSource(doc), new StreamResult(file));
response().setHeader("Content-Disposition", "attachment;filename=" + file.getName());
response().setHeader("Content-Type", "text/xml; charset=ISO-8859-1");
return ok(file).as("text/xml");
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