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Added incomplete REST client

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This commit is contained in:
Ziver Koc 2018-06-06 10:27:28 +02:00
parent ccecc067b2
commit 351d5478c7
5 changed files with 223 additions and 48 deletions
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63
src/zutil/net/http/HttpClient.java
View file

@ -39,53 +39,56 @@ import java.util.HashMap;
*
* @author Ziver
*/
public class HttpClient implements AutoCloseable{
public enum HttpRequestType{
public class HttpClient implements AutoCloseable {
public enum HttpRequestType {
GET, POST
}
// Request variables
private HttpURL url;
private HttpRequestType type;
private HashMap<String,String> headers;
private HashMap<String,String> cookies;
private HashMap<String, String> headers;
private HashMap<String, String> cookies;
private String data;
// Response variables
private HttpHeaderParser rspHeader;
private HttpHeaderParser rspHeader;
private InputStream rspStream;
public HttpClient(HttpRequestType type){
public HttpClient(HttpRequestType type) {
this.type = type;
headers = new HashMap<>();
cookies = new HashMap<>();
}
public void setURL( URL url){
this.url = new HttpURL( url );
public void setURL(URL url) {
setURL(new HttpURL(url));
}
public void setURL(HttpURL url) {
this.url = url;
}
/**
* Adds a parameter to the request
*/
public void setParameter( String key, String value ){
public void setParameter(String key, String value) {
url.setParameter(key, value);
}
/**
* Adds a cookie to the request
*/
public void setCookie( String key, String value ){
public void setCookie(String key, String value) {
cookies.put(key, value);
}
/**
* Adds a header value to the request
*/
public void setHeader( String key, String value ){
public void setHeader(String key, String value) {
headers.put(key, value);
}
@ -93,7 +96,7 @@ public class HttpClient implements AutoCloseable{
* Sets the content data that will be included in the request.
* NOTE: this will override the POST data parameter inclusion.
*/
public void setData( String data ){
public void setData(String data) {
this.data = data;
}
@ -101,32 +104,31 @@ public class HttpClient implements AutoCloseable{
* Will send a HTTP request to the target host.
* NOTE: any previous request connections will be closed
*/
public HttpHeaderParser send() throws IOException{
Socket conn = new Socket( url.getHost(), url.getPort());
public HttpHeaderParser send() throws IOException {
Socket conn = new Socket(url.getHost(), url.getPort());
// Request
HttpPrintStream request = new HttpPrintStream( conn.getOutputStream(), HttpMessageType.REQUEST );
request.setRequestType( type.toString() );
request.setRequestURL( url.getHttpURL() );
request.setHeaders( headers );
request.setCookies( cookies );
HttpPrintStream request = new HttpPrintStream(conn.getOutputStream(), HttpMessageType.REQUEST);
request.setRequestType(type.toString());
request.setRequestURL(url.getHttpURL());
request.setHeaders(headers);
request.setCookies(cookies);
if( type == HttpRequestType.POST ){
if (type == HttpRequestType.POST) {
String postData;
if(data != null)
if (data != null)
postData = data;
else
postData = url.getParameterString();
request.setHeader("Content-Length", ""+postData.length());
request.setHeader("Content-Length", "" + postData.length());
request.println();
request.print( postData );
}
else
request.print(postData);
} else
request.println();
request.close();
// Response
if(rspHeader != null || rspStream != null) // Close previous request
if (rspHeader != null || rspStream != null) // Close previous request
this.close();
rspStream = new BufferedInputStream(conn.getInputStream());
rspHeader = new HttpHeaderParser(rspStream);
@ -134,16 +136,17 @@ public class HttpClient implements AutoCloseable{
return rspHeader;
}
public HttpHeaderParser getResponseHeader(){
public HttpHeaderParser getResponseHeader() {
return rspHeader;
}
public InputStream getResponseInputStream(){
public InputStream getResponseInputStream() {
return rspStream;
}
@Override
public void close() throws IOException {
if(rspStream != null)
if (rspStream != null)
rspStream.close();
rspStream = null;
rspHeader = null;

59
src/zutil/net/ws/rest/RESTClientFactory.java Normal file
View file

@ -0,0 +1,59 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2018 Ziver Koc
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package zutil.net.ws.rest;
import zutil.log.LogUtil;
import zutil.net.ws.WSClientFactory;
import zutil.net.ws.WSInterface;
import zutil.net.ws.WebServiceDef;
import zutil.net.ws.soap.SOAPClientInvocationHandler;
import java.net.URL;
import java.util.logging.Logger;
/**
* This is an factory that generates clients for web services
*
* @author Ziver
*/
public class RESTClientFactory {
private static Logger logger = LogUtil.getLogger();
/**
* Generates a Client Object for the web service.
*
* @param <T> is the class of the web service definition
* @param url is the target service serviceUrl
* @param intf is the class of the web service definition
* @return a client Object
*/
public static <T extends WSInterface> T createClient(URL url, Class<T> intf){
T obj = WSClientFactory.createClient( intf,
new RESTClientInvocationHandler(url, new WebServiceDef(intf)));
return obj;
}
}

112
src/zutil/net/ws/rest/RESTClientInvocationHandler.java Normal file
View file

@ -0,0 +1,112 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2018 Ziver Koc
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package zutil.net.ws.rest;
import zutil.io.IOUtil;
import zutil.log.LogUtil;
import zutil.net.http.HttpClient;
import zutil.net.http.HttpHeaderParser;
import zutil.net.http.HttpURL;
import zutil.net.ws.WSInterface;
import zutil.net.ws.WSMethodDef;
import zutil.net.ws.WSParameterDef;
import zutil.net.ws.WebServiceDef;
import zutil.net.ws.soap.SOAPHttpPage;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This is an abstract client that will do generic requests to a
* REST Web service using JSON response.
*/
public class RESTClientInvocationHandler implements InvocationHandler {
private static Logger logger = LogUtil.getLogger();
private WebServiceDef wsDef;
/**
* Web address of the web service
*/
protected URL serviceUrl;
public RESTClientInvocationHandler(URL url, WebServiceDef webServiceDef) {
this.serviceUrl = url;
this.wsDef = webServiceDef;
}
/**
* Makes a request to the target web service
*/
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
// Generate XML
HttpURL url = generateRESTRequest(method.getName(), args);
// Send request
HttpClient request = new HttpClient(HttpClient.HttpRequestType.POST);
request.setURL(url);
HttpHeaderParser response = request.send();
String rspJson = IOUtil.readContentAsString(request.getResponseInputStream());
request.close();
// DEBUG
if (logger.isLoggable(Level.FINEST)) {
System.out.println("********** Request");
System.out.println(url);
System.out.println("********** Response");
System.out.println(rspJson);
}
return parseRESTResponse(rspJson);
}
private HttpURL generateRESTRequest(String targetMethod, Object[] args) {
logger.fine("Sending request for " + targetMethod);
HttpURL url = new HttpURL(serviceUrl);
WSMethodDef methodDef = wsDef.getMethod(targetMethod);
url.setPath(serviceUrl.getPath()
+ (serviceUrl.getPath().endsWith("/") ? "" : "/")
+ methodDef.getName());
for (int i = 0; i < methodDef.getOutputCount(); i++) {
WSParameterDef param = methodDef.getOutput(i);
url.setParameter(param.getName(), args[i].toString());
}
return url;
}
private Object parseRESTResponse(String json) {
return null;
}
}

2
src/zutil/net/ws/soap/SOAPClientFactory.java
View file

@ -45,7 +45,7 @@ public class SOAPClientFactory {
* Generates a Client Object for the web service.
*
* @param <T> is the class of the web service definition
* @param url is the target service url
* @param url is the target service serviceUrl
* @param intf is the class of the web service definition
* @return a client Object
*/

31
src/zutil/net/ws/soap/SOAPClientInvocationHandler.java
View file

@ -53,11 +53,13 @@ public class SOAPClientInvocationHandler implements InvocationHandler {
private static Logger logger = LogUtil.getLogger();
private WebServiceDef wsDef;
/** Web address of the web service */
/**
* Web address of the web service
*/
protected URL url;
public SOAPClientInvocationHandler(URL url, WebServiceDef wsDef){
public SOAPClientInvocationHandler(URL url, WebServiceDef wsDef) {
this.url = url;
this.wsDef = wsDef;
}
@ -69,10 +71,9 @@ public class SOAPClientInvocationHandler implements InvocationHandler {
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
// Generate XML
Document document = genSOAPRequest((WSInterface)proxy, method.getName(), args);
Document document = genSOAPRequest((WSInterface) proxy, method.getName(), args);
String reqXml = document.asXML();
// Send request
HttpClient request = new HttpClient(HttpClient.HttpRequestType.POST);
request.setURL(url);
@ -82,7 +83,7 @@ public class SOAPClientInvocationHandler implements InvocationHandler {
request.close();
// DEBUG
if( logger.isLoggable(Level.FINEST) ){
if (logger.isLoggable(Level.FINEST)) {
System.out.println("********** Request");
System.out.println(reqXml);
System.out.println("********** Response");
@ -93,23 +94,23 @@ public class SOAPClientInvocationHandler implements InvocationHandler {
}
private Document genSOAPRequest(WSInterface obj, String targetMethod, Object[] args){
logger.fine("Sending request for "+targetMethod);
private Document genSOAPRequest(WSInterface obj, String targetMethod, Object[] args) {
logger.fine("Sending request for " + targetMethod);
Document document = DocumentHelper.createDocument();
Element envelope = document.addElement("soap:Envelope");
WSMethodDef methodDef = wsDef.getMethod( targetMethod );
WSMethodDef methodDef = wsDef.getMethod(targetMethod);
try {
envelope.addNamespace("soap", "http://schemas.xmlsoap.org/soap/envelope/");
envelope.addNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
envelope.addNamespace("xsd", "http://www.w3.org/2001/XMLSchema");
Element body = envelope.addElement( "soap:Body" );
Element body = envelope.addElement("soap:Body");
Element method = body.addElement("");
method.addNamespace("m", methodDef.getNamespace() );
method.setName("m:"+methodDef.getName()+"Request");
for(int i=0; i<methodDef.getOutputCount() ;i++){
WSParameterDef param = methodDef.getOutput( i );
SOAPHttpPage.generateSOAPXMLForObj(method, args[i] , param.getName());
method.addNamespace("m", methodDef.getNamespace());
method.setName("m:" + methodDef.getName() + "Request");
for (int i = 0; i < methodDef.getOutputCount(); i++) {
WSParameterDef param = methodDef.getOutput(i);
SOAPHttpPage.generateSOAPXMLForObj(method, args[i], param.getName());
}
} catch (Exception e) {
@ -119,7 +120,7 @@ public class SOAPClientInvocationHandler implements InvocationHandler {
return document;
}
private Object parseSOAPResponse(String xml){
private Object parseSOAPResponse(String xml) {
try {
Element response = SOAPHttpPage.getXMLRoot(xml);
// TODO: