Logging
ILogger interface is used to receive the information about errors, warnings and events which occur while data extraction. ILogger interface has the following members:
| Member | Description |
|---|---|
| error(String, java.lang.Exception) | Logs an error that occurred during data extraction. |
| warning(String) | Logs a warning that occurred during data extraction. |
| trace(String) | Logs an event occurred during data extraction. |
Here are the steps to receive the information via ILogger interface:
- Implement the class with ILogger interface implementation;
- Instantiate Parser object with ParserSettings object.
The following example shows how to receive the information via ILogger interface.
try {
// Create an instance of Logger class
Logger logger = new Logger();
// Create an instance of Parser class with the parser settings
try (Parser parser = new Parser(Constants.SamplePassword, null, new ParserSettings(logger))) {
// Check if text extraction is supported
if (!parser.getFeatures().isText()) {
System.out.println("Text extraction isn't supported.");
return;
}
// Print the document text
try (TextReader reader = parser.getText()) {
System.out.println(reader.readToEnd());
}
}
} catch (InvalidPasswordException | IOException ex) {
; // Ignore the exception
}
class Logger implements ILogger {
public void error(String message, Exception exception) {
// Print error message
System.out.println("Error: " + message);
}
public void trace(String message) {
// Print event message
System.out.println("Event: " + message);
}
public void warning(String message) {
// Print warning message
System.out.println("Warning: " + message);
}
}
More resources
GitHub examples
You may easily run the code above and see the feature in action in our GitHub examples:
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