Hi all,
I want to implement search on file contents for keywords using struts.
Presently, I am reading the file contents line by line and checking for
the occurrence of the keywords. Below is the code I use for searching a
file.
br = new BufferedReader(new FileReader(file));
while ((line = br.readLine()
)!=null){
line =
line.toLowerCase();
for (int i=0;
i<keyword.length; i++){
if
(line.indexOf(keyword[i]) != -1 ){
containsKeyword = true;
System.out.println("\t"+file.getName() + " - selected." );
System.out.println("\t\t"+line );
return containsKeyword;
}
}
}
This is the easiest idea that stuck me first but I'm worried about its
efficiency as this function will be called once for every file and there
are many files in the search location.
And to locate the files I traverse the directories recursively till I
find all the files. Even this works pretty slowly for huge directory
structures. I'm pasting the code below:
public ArrayList getFileList(String dir, String keywords){
System.out.println(dir);
try {
File file = null;
if(dir !=null){
file= new File(dir);
}
FilenameFilter filter = new
FileFilter();
File[] list =
file.listFiles(filter);
if(list != null) {
for(int loopCount =
0;loopCount < list.length;loopCount++) {
String
fileName = list[loopCount].getName();
if(list[loopCount].isFile()) {
/*Search*/
if (isPresent(keywords, list[loopCount])){
LabelValueBean bean = new
LabelValueBean(fileName/*.substring(0,fileName.indexOf("."))*/,list[loop
Count].getAbsolutePath());
fileList.add(bean);
}
} else {
this.getFileList(list[loopCount].getAbsolutePath(), keywords);
}
}
}
}
catch(Exception ioe) {
d_log.error("SearchImpl.java : IO
Exception while getting list of directories or files." , ioe);
}
return fileList;
}
Please let me know if there's a better way to implement this function.
Thanks,
Saranya
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