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Java example source code file (TestMultipartForm.java)

This example source code file (TestMultipartForm.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

bytearrayoutputstream, content-disposition, content-transfer-encoding, content-type, exception, fileinputstream, formbodypart, header, httpmultipart, inputstreambody, io, message, string, stringbody, us-ascii

The TestMultipartForm.java example source code

/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.entity.mime;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.Writer;
import java.nio.charset.Charset;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.apache.http.entity.mime.FormBodyPart;
import org.apache.http.entity.mime.HttpMultipart;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.InputStreamBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.james.mime4j.field.Fields;
import org.apache.james.mime4j.message.BodyPart;
import org.apache.james.mime4j.message.Header;
import org.apache.james.mime4j.message.Message;

public class TestMultipartForm extends TestCase {

    // ------------------------------------------------------------ Constructor
    public TestMultipartForm(final String testName) {
        super(testName);
    }

    // ------------------------------------------------------------------- Main
    public static void main(String args[]) {
        String[] testCaseName = { TestMultipartForm.class.getName() };
        junit.textui.TestRunner.main(testCaseName);
    }

    // ------------------------------------------------------- TestCase Methods

    public static Test suite() {
        return new TestSuite(TestMultipartForm.class);
    }

    public void testMultipartFormLowLevel() throws Exception {
        Message message = new Message();
        Header header = new Header();
        header.addField(Fields.contentType("multipart/form-data; boundary=foo"));
        message.setHeader(header);
        
        HttpMultipart multipart = new HttpMultipart("form-data");
        multipart.setParent(message);
        BodyPart p1 = new BodyPart();
        Header h1 = new Header();
        h1.addField(Fields.contentType("text/plain"));
        p1.setHeader(h1);
        p1.setBody(new StringBody("this stuff"));
        BodyPart p2 = new BodyPart();
        Header h2 = new Header();
        h2.addField(Fields.contentType("text/plain"));
        p2.setHeader(h2);
        p2.setBody(new StringBody("that stuff"));
        BodyPart p3 = new BodyPart();
        Header h3 = new Header();
        h3.addField(Fields.contentType("text/plain"));
        p3.setHeader(h3);
        p3.setBody(new StringBody("all kind of stuff"));

        multipart.addBodyPart(p1);
        multipart.addBodyPart(p2);
        multipart.addBodyPart(p3);
        
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        multipart.writeTo(out);
        out.close();
        
        String expected = 
            "--foo\r\n" +
            "Content-Type: text/plain\r\n" +
            "\r\n" +
            "this stuff\r\n" +
            "--foo\r\n" +
            "Content-Type: text/plain\r\n" +
            "\r\n" +
            "that stuff\r\n" +
            "--foo\r\n" +
            "Content-Type: text/plain\r\n" +
            "\r\n" +
            "all kind of stuff\r\n" +
            "--foo--\r\n";
        String s = out.toString("US-ASCII");
        assertEquals(expected, s);
        assertEquals(s.length(), multipart.getTotalLength());
    }
    
    public void testMultipartFormStringParts() throws Exception {
        Message message = new Message();
        Header header = new Header();
        header.addField(Fields.contentType("multipart/form-data; boundary=foo"));
        message.setHeader(header);
        
        HttpMultipart multipart = new HttpMultipart("form-data");
        multipart.setParent(message);
        FormBodyPart p1 = new FormBodyPart(
                "field1",
                new StringBody("this stuff"));
        FormBodyPart p2 = new FormBodyPart(
                "field2",
                new StringBody("that stuff", Charset.forName("US-ASCII")));
        FormBodyPart p3 = new FormBodyPart(
                "field3",
                new StringBody("all kind of stuff"));
        
        multipart.addBodyPart(p1);
        multipart.addBodyPart(p2);
        multipart.addBodyPart(p3);
        
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        multipart.writeTo(out);
        out.close();
        
        String expected = 
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field1\"\r\n" +
            "Content-Type: text/plain; charset=" + 
                Charset.defaultCharset() + "\r\n" +
            "Content-Transfer-Encoding: 8bit\r\n" +
            "\r\n" +
            "this stuff\r\n" +
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field2\"\r\n" +
            "Content-Type: text/plain; charset=US-ASCII\r\n" +
            "Content-Transfer-Encoding: 8bit\r\n" +
            "\r\n" +
            "that stuff\r\n" +
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field3\"\r\n" +
            "Content-Type: text/plain; charset=" + 
                Charset.defaultCharset() + "\r\n" +
            "Content-Transfer-Encoding: 8bit\r\n" +
            "\r\n" +
            "all kind of stuff\r\n" +
            "--foo--\r\n";
        String s = out.toString("US-ASCII");
        assertEquals(expected, s);
        assertEquals(s.length(), multipart.getTotalLength());
    }

    public void testMultipartFormBinaryParts() throws Exception {
        Message message = new Message();
        Header header = new Header();
        header.addField(Fields.contentType("multipart/form-data; boundary=foo"));
        message.setHeader(header);

        File tmpfile = File.createTempFile("tmp", ".bin");
        tmpfile.deleteOnExit();
        Writer writer = new FileWriter(tmpfile);
        try {
            writer.append("some random whatever");
        } finally {
            writer.close();
        }
        
        HttpMultipart multipart = new HttpMultipart("form-data");
        multipart.setParent(message);
        FormBodyPart p1 = new FormBodyPart(
                "field1",
                new FileBody(tmpfile));
        FormBodyPart p2 = new FormBodyPart(
                "field2",
                new InputStreamBody(new FileInputStream(tmpfile), "file.tmp"));
        
        multipart.addBodyPart(p1);
        multipart.addBodyPart(p2);
        
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        multipart.writeTo(out);
        out.close();
        
        String expected =
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field1\"; " +
                "filename=\"" + tmpfile.getName() + "\"\r\n" +
            "Content-Type: application/octet-stream\r\n" +
            "Content-Transfer-Encoding: binary\r\n" +
            "\r\n" +
            "some random whatever\r\n" +
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field2\"; " +
                "filename=\"file.tmp\"\r\n" +
            "Content-Type: application/octet-stream\r\n" +
            "Content-Transfer-Encoding: binary\r\n" +
            "\r\n" +
            "some random whatever\r\n" +
            "--foo--\r\n";
        String s = out.toString("US-ASCII");
        assertEquals(expected, s);
        assertEquals(-1, multipart.getTotalLength());
        
        tmpfile.delete();
    }

    public void testMultipartFormBrowserCompatible() throws Exception {
        Message message = new Message();
        Header header = new Header();
        header.addField(Fields.contentType("multipart/form-data; boundary=foo"));
        message.setHeader(header);

        File tmpfile = File.createTempFile("tmp", ".bin");
        tmpfile.deleteOnExit();
        Writer writer = new FileWriter(tmpfile);
        try {
            writer.append("some random whatever");
        } finally {
            writer.close();
        }
        
        HttpMultipart multipart = new HttpMultipart("form-data");
        multipart.setParent(message);
        FormBodyPart p1 = new FormBodyPart(
                "field1",
                new FileBody(tmpfile));
        FormBodyPart p2 = new FormBodyPart(
                "field2",
                new InputStreamBody(new FileInputStream(tmpfile), "file.tmp"));
        
        multipart.addBodyPart(p1);
        multipart.addBodyPart(p2);
        
        multipart.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
        
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        multipart.writeTo(out);
        out.close();
        
        String expected = 
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field1\"; " +
                "filename=\"" + tmpfile.getName() + "\"\r\n" +
            "\r\n" +
            "some random whatever\r\n" +
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field2\"; " +
                "filename=\"file.tmp\"\r\n" +
            "\r\n" +
            "some random whatever\r\n" +
            "--foo--\r\n";
        String s = out.toString("US-ASCII");
        assertEquals(expected, s);
        assertEquals(-1, multipart.getTotalLength());
        
        tmpfile.delete();
    }

    static final int SWISS_GERMAN_HELLO [] = {
        0x47, 0x72, 0xFC, 0x65, 0x7A, 0x69, 0x5F, 0x7A, 0xE4, 0x6D, 0xE4
    };
        
    static final int RUSSIAN_HELLO [] = {
        0x412, 0x441, 0x435, 0x43C, 0x5F, 0x43F, 0x440, 0x438, 
        0x432, 0x435, 0x442 
    }; 
    
    private static String constructString(int [] unicodeChars) {
        StringBuffer buffer = new StringBuffer();
        if (unicodeChars != null) {
            for (int i = 0; i < unicodeChars.length; i++) {
                buffer.append((char)unicodeChars[i]); 
            }
        }
        return buffer.toString();
    }

    public void testMultipartFormBrowserCompatibleNonASCIIHeaders() throws Exception {
        String s1 = constructString(SWISS_GERMAN_HELLO);
        String s2 = constructString(RUSSIAN_HELLO);

        Message message = new Message();
        Header header = new Header();
        header.addField(Fields.contentType("multipart/form-data; charset=UTF-8; boundary=foo"));
        message.setHeader(header);

        File tmpfile = File.createTempFile("tmp", ".bin");
        tmpfile.deleteOnExit();
        Writer writer = new FileWriter(tmpfile);
        try {
            writer.append("some random whatever");
        } finally {
            writer.close();
        }
        
        HttpMultipart multipart = new HttpMultipart("form-data");
        multipart.setParent(message);
        FormBodyPart p1 = new FormBodyPart(
                "field1",
                new InputStreamBody(new FileInputStream(tmpfile), s1 + ".tmp"));
        FormBodyPart p2 = new FormBodyPart(
                "field2",
                new InputStreamBody(new FileInputStream(tmpfile), s2 + ".tmp"));
        
        multipart.addBodyPart(p1);
        multipart.addBodyPart(p2);
        
        multipart.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
        
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        multipart.writeTo(out);
        out.close();
        
        String expected = 
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field1\"; " +
                "filename=\"" + s1 + ".tmp\"\r\n" +
            "\r\n" +
            "some random whatever\r\n" +
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field2\"; " +
                "filename=\"" + s2 + ".tmp\"\r\n" +
            "\r\n" +
            "some random whatever\r\n" +
            "--foo--\r\n";
        String s = out.toString("UTF-8");
        assertEquals(expected, s);
        assertEquals(-1, multipart.getTotalLength());
        
        tmpfile.delete();
    }

    public void testMultipartFormStringPartsMultiCharsets() throws Exception {
        String s1 = constructString(SWISS_GERMAN_HELLO);
        String s2 = constructString(RUSSIAN_HELLO);
        
        Message message = new Message();
        Header header = new Header();
        header.addField(Fields.contentType("multipart/form-data; boundary=foo"));
        message.setHeader(header);
        
        HttpMultipart multipart = new HttpMultipart("form-data");
        multipart.setParent(message);
        FormBodyPart p1 = new FormBodyPart(
                "field1",
                new StringBody(s1, Charset.forName("ISO-8859-1")));
        FormBodyPart p2 = new FormBodyPart(
                "field2",
                new StringBody(s2, Charset.forName("KOI8-R")));
        
        multipart.addBodyPart(p1);
        multipart.addBodyPart(p2);
        
        ByteArrayOutputStream out1 = new ByteArrayOutputStream();
        multipart.writeTo(out1);
        out1.close();
        
        ByteArrayOutputStream out2 = new ByteArrayOutputStream();

        out2.write(( 
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field1\"\r\n" +
            "Content-Type: text/plain; charset=ISO-8859-1\r\n" +
            "Content-Transfer-Encoding: 8bit\r\n" +
            "\r\n").getBytes("US-ASCII"));
        out2.write(s1.getBytes("ISO-8859-1"));
        out2.write(("\r\n" +
            "--foo\r\n" +
            "Content-Disposition: form-data; name=\"field2\"\r\n" +
            "Content-Type: text/plain; charset=KOI8-R\r\n" +
            "Content-Transfer-Encoding: 8bit\r\n" +
            "\r\n").getBytes("US-ASCII"));
        out2.write(s2.getBytes("KOI8-R"));
        out2.write(("\r\n" +
            "--foo--\r\n").getBytes("US-ASCII"));
        out2.close();

        byte[] actual = out1.toByteArray();
        byte[] expected = out2.toByteArray();
        
        assertEquals(expected.length, actual.length);
        for (int i = 0; i < actual.length; i++) {
            assertEquals(expected[i], actual[i]);
        }
        assertEquals(expected.length, multipart.getTotalLength());
    }

}

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