Java URL Load readFile(URL url)

Description

read File

License

Open Source License

Declaration

public static String readFile(URL url) 

Method Source Code

//package com.java2s;
/*/*from   w w w.j  a va2  s. c  om*/
 * JBoss, Home of Professional Open Source.
 * Copyright 2012 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.BufferedInputStream;

import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;

import java.io.IOException;
import java.io.InputStream;

import java.net.URL;

public class Main {
    public static String readFile(Class<?> testClass, String fileName) {
        final URL res = testClass.getResource(fileName);
        return readFile(res);
    }

    public static String readFile(URL url) {
        try {
            return readFile(url.openStream());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public static String readFile(final File file) {
        try {
            return readFile(new FileInputStream(file));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public static String readFile(InputStream file) {
        BufferedInputStream stream = null;
        try {
            stream = new BufferedInputStream(file);
            byte[] buff = new byte[1024];
            StringBuilder builder = new StringBuilder();
            int read = -1;
            while ((read = stream.read(buff)) != -1) {
                builder.append(new String(buff, 0, read));
            }
            return builder.toString();
        } catch (IOException e) {
            throw new RuntimeException(e);
        } finally {
            if (stream != null) {
                try {
                    stream.close();
                } catch (IOException e) {
                    //ignore
                }
            }
        }
    }

    public static void close(Closeable closeable) {
        try {
            closeable.close();
        } catch (IOException ignore) {
        }
    }
}

Related

1. readContentsToArray(URL url)
2. readContentsToList(URL url)
3. readContentsToString(URL url)
4. readData(String url)
5. readFile(URL file)
6. readFile(URL url)
7. readFileContent(URL file)
8. readFileFromURL(URL url)
9. readFileIntoMap(URL url)