thrift rpc js使用
一、thrift js使用方式
使用thrift js时，PRotocol需要使用TJSONPRotocol/TBinaryProtocol协议，Thrift.Protocol对应的是TJSONPRotocol。Transport需要使用TXHRTransport/TWebSocketTransport通道，Thrift.Transport对应的是TXHRTransport。
thrift-0.10.0源代码中的js代码在thrift-0.10.0\lib\js目录中。test目录下的src目录是java程序，test.html是测试页面。
thrift js使用场景：
Node.js JavaScript 服务端（Node.js本身支持http协议），thrift js客户端
java或vertx等服务端（需要支持http协议），thrift js客户端
二、实例
1、书写test.thrift接口，使用thrift-0.10.0.exe生成java、js的数据结构和代理类。
2、java程序
2.1、java程序中，实现Iface接口方法。
2.2、java服务器程序
Httpd.java
package www.junchen.com;
import java.io.File;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URLDecoder;
import java.util.Collection;
import java.util.Iterator;
import java.util.Locale;
import org.apache.http.ConnectionClosedException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpServerConnection;
import org.apache.http.HttpStatus;
import org.apache.http.MethodNotSupportedException;
import org.apache.http.entity.ContentProducer;
import org.apache.http.entity.EntityTemplate;
import org.apache.http.entity.FileEntity;
import org.apache.http.impl.DefaultHttpResponseFactory;
import org.apache.http.impl.DefaultHttpServerConnection;
import org.apache.http.impl.NoConnectionReuseStrategy;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.BasicHttpProcessor;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.protocol.HttpRequestHandler;
import org.apache.http.protocol.HttpRequestHandlerRegistry;
import org.apache.http.protocol.HttpService;
import org.apache.http.util.EntityUtils;
import org.apache.thrift.TProcessor;
import org.apache.thrift.protocol.TJSONProtocol;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.transport.TMemoryBuffer;
import eu.medsea.mimeutil.MimeType;
import eu.medsea.mimeutil.MimeUtil2;
import eu.medsea.mimeutil.detector.ExtensionMimeDetector;
public class Httpd {
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
if (args.length < 1) {
System.err.println("Please specify document root directory");
System.exit(1);
}
Thread t = new RequestListenerThread(9090, args[0]);
t.setDaemon(false);
t.start();
}
static class HttpFileHandler implements HttpRequestHandler {
private final String docRoot;
public HttpFileHandler(final String docRoot) {
super();
this.docRoot = docRoot;
}
public void handle(final HttpRequest request, final HttpResponse response, final HttpContext context) throws HttpException, IOException {
String method = request.getRequestLine().getMethod().toUpperCase(Locale.ENGLISH);
if (!method.equals("GET") && !method.equals("HEAD") && !method.equals("POST")) {
throw new MethodNotSupportedException(method + " method not supported");
}
String target = request.getRequestLine().getUri();
if (request instanceof HttpEntityEnclosingRequest && target.equals("/service")) {
HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
byte[] entityContent = EntityUtils.toByteArray(entity);
System.out.println("Incoming content: " + new String(entityContent));
final String output = this.thriftRequest(entityContent);
System.out.println("Outgoing content: "+output);
ContentProducer producer = new ContentProducer() {
@Override
public void writeTo(OutputStream outstream) throws IOException {
// TODO Auto-generated method stub
OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
writer.write(output);
writer.flush();
}
};
EntityTemplate body = new EntityTemplate(producer);
body.setContentType("text/html; charset=UTF-8");
response.setEntity(body);
} else {
if(target.indexOf("?") != -1) {
target = target.substring(1, target.indexOf("?"));
}
final File file = new File(this.docRoot, URLDecoder.decode(target, "UTF-8"));
if (!file.exists()) {
response.setStatusCode(HttpStatus.SC_NOT_FOUND);
EntityTemplate body = new EntityTemplate(new ContentProducer() {
public void writeTo(final OutputStream outstream) throws IOException {
OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
writer.write("<html><body><h1>");
writer.write("File ");
writer.write(file.getPath());
writer.write(" not found");
writer.write("</h1></body></html>");
writer.flush();
}
});
body.setContentType("text/html; charset=UTF-8");
response.setEntity(body);
System.out.println("File " + file.getPath() + " not found");
} else if (!file.canRead() || file.isDirectory()) {
response.setStatusCode(HttpStatus.SC_FORBIDDEN);
EntityTemplate body = new EntityTemplate(new ContentProducer() {
public void writeTo(final OutputStream outstream) throws IOException {
OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
writer.write("<html><body><h1>");
writer.write("Access denied");
writer.write("</h1></body></html>");
writer.flush();
}
});
body.setContentType("text/html; charset=UTF-8");
response.setEntity(body);
System.out.println("Cannot read file " + file.getPath());
} else {
String mimeType = "application/octet-stream";
MimeUtil2 mimeUtil = new MimeUtil2();
synchronized (this) {
mimeUtil.registerMimeDetector(ExtensionMimeDetector.class.getName());
}
Collection<MimeType> collection = mimeUtil.getMimeTypes(file);
Iterator<MimeType> iterator = collection.iterator();
while(iterator.hasNext()) {
MimeType mt = iterator.next();
mimeType = mt.getMediaType() + "/" + mt.getSubType();
break;
}
response.setStatusCode(HttpStatus.SC_OK);
FileEntity body = new FileEntity(file, mimeType);
response.addHeader("Content-Type", mimeType);
response.setEntity(body);
System.out.println("Serving file " + file.getPath());
}
}
}
private String thriftRequest(byte[] input){
try{
//Input
TMemoryBuffer inbuffer = new TMemoryBuffer(input.length);
inbuffer.write(input);
TProtocol inprotocol = new TJSONProtocol(inbuffer);
//Output
TMemoryBuffer outbuffer = new TMemoryBuffer(100);
TProtocol outprotocol = new TJSONProtocol(outbuffer);
TProcessor processor = new Test.Processor(new TestImpl());
processor.process(inprotocol, outprotocol);
byte[] output = new byte[outbuffer.length()];
outbuffer.readAll(output, 0, output.length);
return new String(output,"UTF-8");
}catch(Throwable t){
return "Error:"+t.getMessage();
}
}
}
static class RequestListenerThread extends Thread {
private final ServerSocket serversocket;
private final HttpParams params;
private final HttpService httpService;
private final String docroot;
public RequestListenerThread(int port, final String docroot) throws IOException {
this.docroot = docroot;
this.serversocket = new ServerSocket(port);
this.params = new BasicHttpParams();
this.params.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 1000).setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
.setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false).setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true)
.setParameter(CoreProtocolPNames.ORIGIN_SERVER, "HttpComponents/1.1");
// Set up the HTTP protocol processor
HttpProcessor httpproc = new BasicHttpProcessor();
// Set up request handlers
HttpRequestHandlerRegistry reqistry = new HttpRequestHandlerRegistry();
reqistry.register("*", new HttpFileHandler(docroot));
// Set up the HTTP service
this.httpService = new HttpService(httpproc, new NoConnectionReuseStrategy(), new DefaultHttpResponseFactory());
this.httpService.setParams(this.params);
this.httpService.setHandlerResolver(reqistry);
}
public void run() {
System.out.println("Listening on port " + this.serversocket.getLocalPort());
System.out.println("Point your browser to http://localhost:9090/thrift-web-test/test.html");
while (!Thread.interrupted()) {
try {
// Set up HTTP connection
Socket socket = this.serversocket.accept();
DefaultHttpServerConnection conn = new DefaultHttpServerConnection();
System.out.println("Incoming connection from " + socket.getInetAddress());
conn.bind(socket, this.params);
// Start worker thread
Thread t = new WorkerThread(this.httpService, conn);
t.setDaemon(true);
t.start();
} catch (InterruptedIOException ex) {
break;
} catch (IOException e) {
System.err.println("I/O error initialising connection thread: " + e.getMessage());
break;
}
}
}
}
static class WorkerThread extends Thread {
private final HttpService httpservice;
private final HttpServerConnection conn;
public WorkerThread(final HttpService httpservice, final HttpServerConnection conn) {
super();
this.httpservice = httpservice;
this.conn = conn;
}
public void run() {
System.out.println("New connection thread");
HttpContext context = new BasicHttpContext(null);
try {
while (!Thread.interrupted() && this.conn.isOpen()) {
this.httpservice.handleRequest(this.conn, context);
}
} catch (ConnectionClosedException ex) {
System.err.println("Client closed connection");
} catch (IOException ex) {
System.err.println("I/O error: " + ex.getMessage());
} catch (HttpException ex) {
System.err.println("Unrecoverable HTTP protocol violation: " + ex.getMessage());
} finally {
try {
this.conn.shutdown();
} catch (IOException ignore) {
}
}
}
}
}上面程序依赖于thrift-0.10.0代码和一些jar包。如下图：
3、html页面
test.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Hello Thrift</title>
</head>
<body>
number1: <input type="text" id="number1">
number2: <input type="text" id="number2">
result: <input type="text" id="result">
<input type="button" id="add" value="add" >
<div id="output"></div>
<script src="thrift.js"></script>
<script src="gen-js/test_types.js"></script>
<script src="gen-js/Test.js"></script>
<script>
(function() {
//var transport = new Thrift.Transport("http://localhost:9090/service");
var transport = new Thrift.Transport("/service");
var protocol = new Thrift.TJSONProtocol(transport);
var client = new TestClient(protocol);
var number1 = document.getElementById("number1");
var number2 = document.getElementById("number2");
var resultElement = document.getElementById("result");
var outputElement = document.getElementById("output");
document.getElementById("add").addEventListener("click", function(){
client.add(number1.value,number2.value, function(result) {
outputElement.innerHTML = result;
resultElement.value = result;
});
});
})();
</script>
</body>
</html>注意：
1）、将web页面，包含thrift.js等资源文件拷贝到一个目录下。
2）、执行java程序时，需要指定对应的web页面的根目录，比如d:
3）、跨域问题，将web页面放到java程序配置的程序目录中。
完整代码下载