问题描述
我正在尝试将XML字符串输出到.xml文件中,以进行调试.我的字符串看起来像这样:
I am trying to output an XML String into a .xml file for debugging purpose. My String looks like this:
System.out.println("xmlString = \n" + xmlString);
===========================================================
INFO: xmlString =
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">2</int>
<lst name="params">
<str name="indent">true</str>
<str name="q">source_t:ST</str>
<str name="wt">xml</str>
</lst>
</lst>
...
现在,以下代码将String输出到XML文件中.
Now, the following code is to output the String into XML file.
try {
System.out.println("Writing xmlString to xml file");
File file = new File("xmlString.xml");
// if file doesnt exists, then create it
if (!file.exists()) {
file.createNewFile();
}
FileWriter fw = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
bw.write(xmlString);
bw.close();
System.out.println("Done writing file");
} catch (IOException e) {
e.printStackTrace();
}
但这是我从输出日志中得到的错误:
But this is the error I got from output log:
INFO: Writing xmlString to xml file
INFO: Done writing file
SEVERE: java.net.MalformedURLException: no protocol: <?xml version="1.0" encoding="UTF-8"?>
未创建文件.有人可以告诉我这是什么意思吗?以及如何解决呢?预先感谢
No file is created.Can someone tell me what does this mean? And how to solve this?Thanks in advance
======================================================================================编辑(我最初虽然是由于错误发生在FileWritter上,所以才没有发布整个代码):我已经编辑了帖子以显示我的整个代码.该代码实际上是由JSP文件调用的.哪个通过xmlString
======================================================================================Edit (I initially though that the error lies at the FileWritter, which is why I didn't post the whole code): I have edited my post to display my whole code. This code is actually called by a JSP file. Which passes the xmlString
public class SAXParserClass {
//Declare as public since it needs to be redefined for appending into ArrayList
public static String row[] = new String[5]; //id, full_message_t, source_t, news_t, link_t
public ArrayList<String[]> XMLReader(String xmlString)
{
//Output: GlassFish Server. Test if String is passed in correctly
System.out.println("xmlString = \n" + xmlString);
try {
System.out.println("Writing xmlString to xml file");
File file = new File("xmlString.xml");
// if file doesnt exists, then create it
if (!file.exists()) {
file.createNewFile();
}
FileWriter fw = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
bw.write(xmlString);
bw.close();
System.out.println("Done writing file");
} catch (IOException e) {
e.printStackTrace();
}
//Declaration
final ArrayList<String[]> tableResult = new ArrayList<String[]>(); //Store ArrayList of row[]
try {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser saxParser = factory.newSAXParser();
DefaultHandler handler = new DefaultHandler()
{
//When these are TRUE, extract the content
boolean b_id = false;
boolean b_full_message_t = false;
boolean b_source_t = false;
boolean b_news_t = false;
boolean b_link_t = false;
//############################################################################################
//Look for <start> tags
public void startElement(String uri, String localName,String qName,
Attributes attributes) throws SAXException {
System.out.println("Start Element :" + qName);
//Only interested in <str>
if (qName.equalsIgnoreCase("str")) {
String name = attributes.getValue("name");
//Check for name="id"
if(name.equalsIgnoreCase("id")){
b_id = true;
}
//Check for name="full_message_t"
else if(name.equalsIgnoreCase("full_message_t")){
b_full_message_t = true;
}
else if(name.equalsIgnoreCase("source_t")){
b_source_t = true;
}
else if(name.equalsIgnoreCase("news_t")){
b_news_t= true;
}
else if(name.equalsIgnoreCase("link_t")){
b_link_t = true;
}
}//end if
}//end startElement
//############################################################################################
//Look for <end> tags
public void endElement(String uri, String localName,
String qName) throws SAXException {
System.out.println("End Element :" + qName);
//When reach </doc>, row Array is complete. Add into ArrayList
if (qName.equalsIgnoreCase("doc")) {
System.out.println("Push row into Arraylist : " + row[0]);
tableResult.add(row);
row = new String[5]; //reinitialize String[]
}
}//end endElement
//############################################################################################
//Get the content
public void characters(char ch[], int start, int length) throws SAXException {
if (b_id) {
//System.out.println("id : " + new String(ch, start, length));
row[0] = new String(ch, start, length);
System.out.println("The id is " + row[0]);
b_id = false;
}
else if (b_full_message_t) {
//System.out.println("fullmsg : " + new String(ch, start, length));
row[1] = new String(ch, start, length);
System.out.println("The fullmsg is " + row[1]);
b_full_message_t = false;
}
else if (b_source_t) {
//System.out.println("fullmsg : " + new String(ch, start, length));
row[2] = new String(ch, start, length);
System.out.println("The source is " + row[2]);
b_source_t = false;
}
else if (b_news_t) {
//System.out.println("fullmsg : " + new String(ch, start, length));
row[3] = new String(ch, start, length);
System.out.println("The news is " + row[3]);
b_news_t = false;
}
else if (b_link_t) {
//System.out.println("fullmsg : " + new String(ch, start, length));
row[4] = new String(ch, start, length);
System.out.println("The link is " + row[4]);
b_link_t = false;
}
}//end characters
};//end DefaultHandler
//############################################################################################
//Read the String
//saxParser.parse("solrTest.xml", handler);
//File file = new File("solrTest.xml");
//InputStream inputStream= new FileInputStream(file);
// Reader reader = new InputStreamReader(xmlString,"UTF-8");
//
// InputSource is = new InputSource(reader);
// is.setEncoding("UTF-8");
saxParser.parse(xmlString, handler);
} catch (Exception e) {
e.printStackTrace();
}
//Test output Arraylist
System.out.println("Test Result!!!");
for(String[] columns : tableResult){
for(int i=0; i<columns.length; i++){
System.out.println("Number = " + columns[i]);
}
}
//Return the ArrayList of String[]
return tableResult;
}//end XMLReader
}//end class
推荐答案
问题在这里.您正在传递XML字符串,就好像它是一个URL.不是.您需要阅读SAXParser.parse()的Javadoc.
The problem is here. You are passing the XML string as though it was a URL. It isn't. You need to read the Javadoc for SAXParser.parse().
注意:
- 您输入了错误的代码.堆栈跟踪告诉您从何处引发了异常.您显然根本没有看过它.
- 当您被问到时,您没有回答问题.
- 您问了不相关的问题.
- 您拒绝做引起问题的事情,之后建议您这样做.所以你甚至都没有检查.
- You posted the wrong code. The stack trace told you where the exception was thrown from. You evidently didn't even look at it.
- You failed to answer questions when they were asked.
- You asked irrelevant questions.
- You denied doing the very thing that caused the problem, after it was suggested that's what you must be doing. So you didn't even check.
这不是解决问题的合理策略.
This is not a rational strategy for solving problems.
这篇关于java.net.MalformedURLException:无协议:XML的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!