replaceAll Java method to remove “\\n” from String [duplicate]

问题

I have a simple treatement but I'm stuck

I have something like

"\"iVBORw0KGgoAAAANSUhEUgAAAwoAAADwCAYAAACg2ZPDAAAABHNCSVQICAgIfAhkiAAAIABJREFU\\neJzt3XecXVW99";

public static void main(String[] args) {
        String value = "\"iVBORw0KGgoAAAANSUhEUgAAAwoAAADwCAYAAACg2ZPDAAAABHNCSVQICAgIfAhkiAAAIABJREFU\\neJzt3XecXVW99";
        String filtre1 = value.replaceAll("\"", "");
        String filtre2 = filtre1.replaceAll("\\n", "");
        System.out.println(filtre2);

    }

the result is .. I have always "\n" I want to remove it

iVBORw0KGgoAAAANSUhEUgAAAwoAAADwCAYAAACg2ZPDAAAABHNCSVQICAgIfAhkiAAAIABJREFU\neJzt3XecXVW99

回答1:

Maybe:

String filtre2 = filtre1.replaceAll("\\n", "");

need to be :

String filtre2 = filtre1.replaceAll("\\\\n", "");

(sorry i cannot just add comment)

回答2:

You could try this:

public static void main(String[] args) {
    String value = "\"iVBORw0KGgoAAAANSUhEUgAAAwoAAADwCAYAAACg2ZPDAAAABHNCSVQICAgIfAhkiAAAIABJREFU\\neJzt3XecXVW99";
    String filtre1 = value.replaceAll("\"", "");
    String filtre2 = filtre1.replaceAll("\\\\n", "");
    System.out.println(filtre2);

}

回答3:

You basically have two choices, both of which are in the below code:

public static void main(String[] args) {
    String value = "\"iVBORw0KGgoAAAANSUhEUgAAAwoAAADwCAYAAACg2ZPDAAAABHNCSVQICAgIfAhkiAAAIABJREFU\\neJzt3XecXVW99";
    System.out.println(value.replace("\"", "").replace("\\n", ""));
    System.out.println(value.replaceAll("\"|\\\\n", ""));
}

来源：https://stackoverflow.com/questions/49565658/replaceall-java-method-to-remove-n-from-string

标签

java

regex

string