Java tutorial
/** * Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * WSO2 Inc. 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. */ package org.apache.synapse.commons.json; import junit.framework.TestCase; import org.apache.axiom.om.OMElement; import org.apache.axis2.AxisFault; import org.apache.axis2.builder.Builder; import org.apache.axis2.context.MessageContext; import org.apache.axis2.transport.MessageFormatter; import org.apache.commons.io.IOUtils; import javax.xml.stream.XMLStreamException; import java.io.*; public class StreamBuilderFormatterTest extends TestCase { private Builder jsonBuilder = Util.newJsonStreamBuilder(); private MessageFormatter formatter = Util.newJsonStreamFormatter(); private static final String jsonIn2 = "{\"type\":\"Polygon\",\"coordinates\":[[[116.0865381,-8.608804],[116.127196,-8.608804],[116.127196,-8.554822],[116.0865381,-8.554822]]]}"; private static final String xml2 = "<jsonObject><type>Polygon</type><coordinates><jsonArray><jsonElement><jsonArray><jsonElement>116.0865381</jsonElement><jsonElement>-8.608804</jsonElement></jsonArray></jsonElement><jsonElement><jsonArray><jsonElement>116.127196</jsonElement><jsonElement>-8.608804</jsonElement></jsonArray></jsonElement><jsonElement><jsonArray><jsonElement>116.127196</jsonElement><jsonElement>-8.554822</jsonElement></jsonArray></jsonElement><jsonElement><jsonArray><jsonElement>116.0865381</jsonElement><jsonElement>-8.554822</jsonElement></jsonArray></jsonElement></jsonArray></coordinates></jsonObject>"; private static final String jsonIn3 = "[[[116.0865381,-8.608804],[116.127196,-8.608804],[116.127196,-8.554822],[116.0865381,-8.554822]]]"; private static final String xml3 = "<jsonArray><jsonElement><jsonArray><jsonElement><jsonArray><jsonElement>116.0865381</jsonElement><jsonElement>-8.608804</jsonElement></jsonArray></jsonElement><jsonElement><jsonArray><jsonElement>116.127196</jsonElement><jsonElement>-8.608804</jsonElement></jsonArray></jsonElement><jsonElement><jsonArray><jsonElement>116.127196</jsonElement><jsonElement>-8.554822</jsonElement></jsonArray></jsonElement><jsonElement><jsonArray><jsonElement>116.0865381</jsonElement><jsonElement>-8.554822</jsonElement></jsonArray></jsonElement></jsonArray></jsonElement></jsonArray>"; private static final String jsonIn4 = "[\n" + " {\"name\":\"Ishan\", \"phone\":\"+94 (11) 222 3333\"},\n" + " {\"name\":null, \"phone\":{}},\n" + " {\"name\":\"WSO2\", \"phone\":\"+94 (11) 222 3333\"}\n" + "]"; private static final String xml4 = "<jsonArray><jsonElement><name>Ishan</name><phone>+94 (11) 222 3333</phone></jsonElement><jsonElement><name /><phone /></jsonElement><jsonElement><name>WSO2</name><phone>+94 (11) 222 3333</phone></jsonElement></jsonArray>"; private static final String jsonIn5 = "{ \"id\":12345, \"id_str\":\"12345\", \"array\":[1, 2, [[],[{\"inner_id\":6789}]]], \"name\":null, \"object\":{}, \"$schema_location\":\"unknown\", \"12X12\":\"image12x12.png\"}"; private static final String xml5 = "<jsonObject><id>12345</id><id_str>12345</id_str><array>1</array><array>2</array><array><jsonArray><jsonElement><jsonArray /></jsonElement><jsonElement><jsonArray><jsonElement><inner_id>6789</inner_id></jsonElement></jsonArray></jsonElement></jsonArray></array><name /><object /><_JsonReader_PS_schema_location>unknown</_JsonReader_PS_schema_location><_JsonReader_PD_12X12>image12x12.png</_JsonReader_PD_12X12></jsonObject>"; private static final String xmlString = "<object xmlns:ns1=\"namespace_1\" xmlns:ns2=\"namespace_2\" xmlns:n3=\"namespace_3\"" + " attrb_1=\"Value1\" ns2:attrb_11=\"Value2\">\n" + " <child c_attrb=\"Child\">Child Text</child>\n" + " <inner xmlns:p=\"item:Namespace\" p:c_attrb=\"Inner\"><e>Text</e></inner>\n" + " <none>\n" + " <noneChild>\n" + " <key>IDString</key>\n" + " <value>00200je832oiuh91hnu8833</value>\n" + " </noneChild>\n" + " </none>\n" + "</object>"; private static final String jsonString = "{\"object\":{\"@attrb_1\":\"Value1\",\"@attrb_11\":\"Value2\",\"child\":{\"@c_attrb\":\"Child\",\"$\":\"Child Text\"},\"inner\":{\"@c_attrb\":\"Inner\",\"e\":\"Text\"},\"none\":{\"noneChild\":{\"key\":\"IDString\",\"value\":\"00200je832oiuh91hnu8833\"}}}}"; private static final String convertedXml = "<jsonObject><object attrb_1=\"Value1\" attrb_11=\"Value2\"><child c_attrb=\"Child\">Child Text</child><inner c_attrb=\"Inner\"><e>Text</e></inner><none><noneChild><key>IDString</key><value>00200je832oiuh91hnu8833</value></noneChild></none></object></jsonObject>"; public void test1() { runTest(jsonIn2, xml2); } public void test3() { runTest(jsonIn3, xml3); } public void test4() { runTest(jsonIn4, xml4); } public void test5() { runTest(jsonIn5, xml5); } public void test2() { try { InputStream is = Util.getJson(1); MessageContext message = Util.newMessageContext(); OMElement element = jsonBuilder.processDocument(is, "application/json", message); OutputStream out = Util.newOutputStream(); formatter.writeTo(message, null, out, false); InputStream outContent = new ByteArrayInputStream(((ByteArrayOutputStream) out).toByteArray()); InputStream compare = Util.getJson(1); assertTrue(IOUtils.contentEquals(outContent, compare)); } catch (FileNotFoundException e) { e.printStackTrace(); assertTrue(false); } catch (AxisFault axisFault) { axisFault.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public void test6() { runTest(jsonString, convertedXml); } public void test7() { // The Input XML must be such that 1) it does not have mixed content 2) no attributes have same name even they // belong to different namespaces. // mixed content is not supported. ie both Text nodes and Elements as child nodes of an element. // cannot have same attribute names even with different ns s. That's because, we remove all namespace declarations // before converting to JSON. try { MessageContext message = null; try { message = Util.newMessageContext(xmlString); } catch (XMLStreamException e) { e.printStackTrace(); } //System.out.println(message.getEnvelope().getBody().toString()); OutputStream out = Util.newOutputStream(); formatter.writeTo(message, null, out, false); String outStr = new String(((ByteArrayOutputStream) out).toByteArray()); //System.out.println(outStr); assertTrue(jsonString.equals(outStr)); } catch (AxisFault axisFault) { axisFault.printStackTrace(); assertTrue(false); } } public void runTest(String jsonIn, String xmlOut) { try { MessageContext message = Util.newMessageContext(); InputStream inputStream = Util.newInputStream(jsonIn.getBytes()); OMElement element = jsonBuilder.processDocument(inputStream, "application/json", message); message.getEnvelope().getBody().addChild(element); //System.out.println(element.toString()); assertTrue(xmlOut.equals(element.toString())); OutputStream out = Util.newOutputStream(); formatter.writeTo(message, null, out, false); String outStr = new String(((ByteArrayOutputStream) out).toByteArray()); //System.out.println(outStr); assertTrue(jsonIn.equals(outStr)); } catch (AxisFault axisFault) { axisFault.printStackTrace(); assertTrue(false); } } }