/**
* helper方法，查找一个指定的元素
*
* @param name 元素名称，格式为 X.Y.Z
* @return Element 如果找到就返回这个元素，否则返回null
*/
public Element findOnly(String name)
{
//分解元素的名称
String[] propName = parsePropertyName(name);
Element element = this.doc.getRootElement();
//遍历搜索匹配的元素
for (int i = 0; i < propName.length; i++)
{
element = element.getChild(propName[i]);
if(element == null) return null;
}
//找到啦！
return element;
}
/**
* Saves the properties to disk as an XML document. A temporary file is
* used during the writing process for maximum safety.
*/
public synchronized void saveProperties() {
OutputStream out = null;
boolean error = false;
// Write data out to a temporary file first.
File tempFile = null;
try {
tempFile = new File(file.getParentFile(), file.getName() + ".tmp");
// Use JDOM's XMLOutputter to do the writing and formatting. The
// file should always come out pretty-printed.
//增加此行使得支持中文 wyl 20021015
XMLOutputter outputter = new XMLOutputter("", true,"GB2312");
out = new BufferedOutputStream(new FileOutputStream(tempFile));
//增加此行，使得xml文件没有空行。 wyl 20021030
outputter.setTextNormalize(true);
outputter.output(doc, out);
}
catch (Exception e) {
e.printStackTrace();
// There were errors so abort replacing the old property file.
error = true;
}
finally {
try { out.close(); }
catch (Exception e) {
e.printStackTrace();
error = true;
}
}
// No errors occured, so we should be safe in replacing the old
if (!error) {
// Delete the old file so we can replace it.
if (!file.delete()) {
System.err.println("Error deleting property file: " +
file.getAbsolutePath());
return;
}
// Rename the temp file. The delete and rename won't be an
// automic operation, but we should be pretty safe in general.
// At the very least, the temp file should remain in some form.
if (!tempFile.renameTo(file)) {
System.err.println("Error renaming temp file from " +
tempFile.getAbsolutePath() + " to " + file.getAbsolutePath());
}
}
}
/**
* Returns an array representation of the given crm property. crm
* properties are always in the format "prop.name.is.this" which would be
* represented as an array of four Strings.
*
* @param name the name of the crm property.
* @return an array representation of the given crm property.
*/
public String[] parsePropertyName(String name) {
// Figure out the number of parts of the name (this becomes the size
// of the resulting array).
int size = 1;
for (int i=0; i if (name.charAt(i) == '.') { size++; } } String[] propName = new String[size]; // Use a StringTokenizer to tokenize the property name. StringTokenizer tokenizer = new StringTokenizer(name, "."); int i = 0; while (tokenizer.hasMoreTokens()) { propName[i] = tokenizer.nextToken(); i++; } return propName; } private String[] parseAttributeName(String name) { // Figure out the number of parts of the name (this becomes the size // of the resulting array). if(name==null) return null; int size = 1; for (int i=0; i { if (name.charAt(i) == '=') { size++; } } if(size!=2) return null; String[] attrName = new String[size]; // Use a StringTokenizer to tokenize the property name. StringTokenizer tokenizer = new StringTokenizer(name, "="); for(int i=0;tokenizer.hasMoreTokens();i++) attrName[i] = tokenizer.nextToken(); return attrName; } /** * @param element element==null start from root * @param attName attribute name * @return attribute value of this element * @author qiuss * @date 2001.11.08 */ public String getAttribute(Element element,String attName) { if(attName==null) return null; // Search for this property by traversing down the XML heirarchy. if(element==null) element = doc.getRootElement(); Attribute att; String value; if((att=element.getAttribute(attName))!=null) value = att.getValue(); else return null; if ("".equals(value)) { return null; } else { return value.trim(); } } // qiuss 2001.11.08 public String getAttribute(String eleName,String attName) { String[] propName = parsePropertyName(eleName); // Search for this property by traversing down the XML heirarchy. Element element = doc.getRootElement(); for (int i = 0; i < propName.length; i++) { element = element.getChild(propName[i]); if (element == null) { // This node doesn't match this part of the property name which // indicates this property doesn't exist so return null. return null; } } // At this point, we found a matching property, so return its value. // Empty strings are returned as null. String value =""; try{ value= element.getAttribute(attName).getValue(); } catch(Exception e) { value =""; } if ("".equals(value)) { return ""; } else { return value.trim(); } } public static void main(String[] args) { XMLProperty xmltree = new XMLProperty("D:/project/bicp-ivr/crm_config.xml"); //存在则更改元素的属性值 xmltree.setProperty("system.connection.username2","type","中文测试"); //不存在则新建一个元素 xmltree.setProperty("system.connection.用户名称","ecom4"); xmltree.setProperty("system.connection.用户名称","type","中文测试2222"); //删除一个xml // xmltree.deleteProperty("system.connection.username2"); String db_url= xmltree.getProperty("system.connection.db_url"); String db_url_id=""; db_url_id=xmltree.getAttribute("system.information.db_url","remark"); Debug.println("db_url="+db_url); Debug.println("db_url_id="+db_url_id); // String names[] = xmltree.parsePropertyName("style.body"); // for(int i=0;i // { // Debug.println("i="+i+" "+names[i]); // } String child[] = xmltree.getChildrenProperties("style.body"); for(int j=0;j { Debug.println("j="+j+" "+child[j]); String child2[]= xmltree.getChildrenProperties("system.tracelog."+child[j]); for(int k=0;k { Debug.println("k="+k+" "+child2[k]); } } //System.out.println("Hello World!"); } }