StringPrintWriter.java

package com.xiaozhi.blog.exception;

import java.io.PrintWriter;
import java.io.StringWriter;

public class StringPrintWriter extends PrintWriter{

    public StringPrintWriter(){
        super(new StringWriter());
    }

    public StringPrintWriter(int initialSize) {
          super(new StringWriter(initialSize));
    }

    public String getString() {
          flush();
          return ((StringWriter) this.out).toString();
    }

    @Override
    public String toString() {
        return getString();
    }
}