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/**
* 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 jdoms 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 wont 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<name.length(); 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<name.length(); 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 doesnt match this part of the property name which
// indicates this property doesnt 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<names.length;i++)
// {
// debug.println("i="+i+" "+names[i]);
// }
string child[] = xmltree.getchildrenproperties("style.body");
for(int j=0;j<child.length;j++)
{
debug.println("j="+j+" "+child[j]);
string child2[]= xmltree.getchildrenproperties("system.tracelog."+child[j]);
for(int k=0;k<child2.length;k++)
{
debug.println("k="+k+" "+child2[k]);
}
}
//system.out.println("hello world!");
}
}
