XML文件在节点的属性值中包含"&&"时无法解析。
XML文件：
<?xml version="1.0" encoding="UTF-8" ?>
<test version="0.0.3" >
<SFTP ipaddress="12.12.12.12" port="22" uname="abc" pwd="abc&&" path="/testdev" />
</test>
当使用 pwd =“abc＆amp;＆amp;”时，它会给我这样的错误，如果我不会使用特殊字符而不是它的工作正常。
错误：
At line 3, column 62: not well-formed (invalid token)
org.apache.harmony.xml.ExpatParser$ParseException: At line 3, column 62: not well-formed (invalid token)
at org.apache.harmony.xml.ExpatParser.parseFragment(ExpatParser.java:515)
at org.apache.harmony.xml.ExpatParser.parseDocument(ExpatParser.java:474)
at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:321)
at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:279)
at com.test.bl.ConfigurationParser.parseFile(ConfigurationParser.java:61)
at com.test.ui.LoginActivity$ConfigurationXMLParseOperation.doInBackground(LoginActivity.java:209)
at com.test.ui.LoginActivity$ConfigurationXMLParseOperation.doInBackground(LoginActivity.java:1)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856)
代码：
public void parseFile(final InputStream inputStream) throws ParserConfigurationException,
SAXException, IOException {
try {
final SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
final SAXParser saxParser = saxParserFactory.newSAXParser();
final XMLReader xmlReader = saxParser.getXMLReader();
xmlReader.setContentHandler(this);
xmlReader.parse(new InputSource(inputStream));
} catch (ParserConfigurationException e) {
Logger.e(TAG, e.getMessage(), e);
} catch (SAXException e) {
Logger.e(TAG, e.getMessage(), e);
} catch (IOException e) {
Logger.e(TAG, e.getMessage(), e);
}
}
@Override
public void startElement(final String uri, final String localName, final String qName,
final Attributes attributes) throws SAXException {
mElementStart = true;
if (localName.equals(null)) {
Logger.i(TAG, "Devices xml file is empty");
}
tempValue = "";
if (localName.equalsIgnoreCase(mSFTPParseNodeString)) {
sftpConfiguration = new SFTPConfiguration();
sftpConfiguration.mSftpIp = attributes.getValue(mSFTPIpParseNodeString);
sftpConfiguration.mRemotePath = attributes.getValue(mSFTPPathParseNodeString);
sftpConfiguration.mSftpPort = Integer.parseInt(attributes
.getValue(mSFTPPortParseNodeString));
sftpConfiguration.mUserName = attributes.getValue(mSFTPUserNameParseNodeString);
sftpConfiguration.mUserPassword = attributes.getValue(mSFTPPasswordParseNodeString);
}
}
请帮助我并给我解决方案如何解析此值并在我的代码中使用。
由于
答案 0 :(得分：5)
在XML中，所有&个字符必须编码为&。
因此，无论文件来自何处，您都必须在尝试解析XML之前更改这些字符。
同样的：
<为< >为> 答案 1 :(得分：4)
XML有五个特殊字符，由XML解析器进行特殊处理：
;结尾）。因此，您必须将“＆amp; ”字符替换为“＆amp; amp; ”，否则您可以将其替换为将其附加到Unicode十进制等效值'解析之前＆amp;＃38; '。请查看以下示例以便更好地理解：
首先，我们可以创建一个Model来表示XML文件中的数据：
package com.stackoverflow.xml.parser.service;
/**
* @author sarath_sivan
*/
public class SFTPConfiguration {
private String ipAddress;
private int port;
private String userName;
private String password;
private String path;
public SFTPConfiguration() {}
public SFTPConfiguration(String ipAddress, int port,
String userName, String password, String path) {
this.ipAddress = ipAddress;
this.port = port;
this.userName = userName;
this.password = password;
this.path = path;
}
public String getIpAddress() {
return ipAddress;
}
public void setIpAddress(String ipAddress) {
this.ipAddress = ipAddress;
}
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPath() {
return path;
}
public void setPath(String path) {
this.path = path;
}
public String toString() {
StringBuffer sftpConfigBuilder = new StringBuffer();
sftpConfigBuilder.append("SFTP Configuration Details > ");
sftpConfigBuilder.append("IP Address: ").append(getIpAddress()).append(", ");
sftpConfigBuilder.append("Port: ").append(getPort()).append(", ");
sftpConfigBuilder.append("UserName: ").append(getUserName()).append(", ");
sftpConfigBuilder.append("Password: ").append(getPassword()).append(", ");
sftpConfigBuilder.append("Path: ").append(getPath());
return sftpConfigBuilder.toString();
}
}
现在，您可以实现SAX Parser，如下所示：
package com.stackoverflow.xml.parser.service;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.apache.commons.io.FileUtils;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* @author sarath_sivan
*/
public class SFTPConfigHandler extends DefaultHandler {
private SFTPConfiguration sftpConfiguration;
private String configData;
public void characters(char[] buffer, int start, int length) {
configData = new String(buffer, start, length);
}
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
configData = "";
if (qName.equalsIgnoreCase("SFTP")) {
sftpConfiguration = new SFTPConfiguration();
sftpConfiguration.setIpAddress(attributes.getValue("ipaddress"));
sftpConfiguration.setPort(Integer.parseInt(attributes.getValue("port")));
sftpConfiguration.setUserName(attributes.getValue("uname"));
sftpConfiguration.setPassword(attributes.getValue("pwd"));
sftpConfiguration.setPath(attributes.getValue("path"));
}
}
public void endElement(String uri, String localName, String qName)
throws SAXException {
//do something if required.
}
public SFTPConfiguration getSFTPConfiguration() {
return sftpConfiguration;
}
public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {
SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
SAXParser saxParser = saxParserFactory.newSAXParser();
SFTPConfigHandler sftpConfigHandler = new SFTPConfigHandler();
String strXml = FileUtils.readFileToString(new File("C:/Users/sarath_sivan/Desktop/sftp-config.xml"));
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(strXml.replaceAll("&", "&").getBytes("UTF-8"));
saxParser.parse(byteArrayInputStream, sftpConfigHandler);
System.out.println(sftpConfigHandler.getSFTPConfiguration().toString());
}
}
<强>输出：
SFTP Configuration Details > IP Address: 12.12.12.12, Port: 22, UserName: abc, Password: abc&&, Path: /quipmentdev
希望这会有所帮助...... 谢谢！
答案 2 :(得分：0)
您需要将其作为＆amp; amp
转义