java 请求 google translate
Table of Contents
1 使用Java获取Google Translate结果
1.1 开发环境设置 Eclipse + Maven 插件
- 各种jar仓库 http://mvnrepository.com/
- 创建一个 maven 项目,在 pom.xml 里面添加依赖的包,
让 maven 顺便下载源码: Eclipse Preference->Maven->Download Artiface Sources 打勾
<dependencies>
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20160212</version>
</dependency>
</dependencies>
1.2 使用 commons-httpclient-3.1 进行 https 请求
- commons-httpclient-3.1 文档: http://hc.apache.org/httpclient-3.x/sslguide.html
- 根据上面的文档中的 Customizing SSL in HttpClient ,创建一个 MySSLSocketFactory.java
package com.zc.myhttps;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.SocketFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import org.apache.commons.httpclient.ConnectTimeoutException;
import org.apache.commons.httpclient.params.HttpConnectionParams;
import org.apache.commons.httpclient.protocol.ProtocolSocketFactory;
public class MySSLSocketFactory implements ProtocolSocketFactory {
private SSLContext sslcontext = null;
private SSLContext createSSLContext() {
SSLContext sslcontext = null;
try {
sslcontext = SSLContext.getInstance("SSL");
sslcontext.init(null,
new TrustManager[] { new TrustAnyTrustManager() },
new java.security.SecureRandom());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
}
return sslcontext;
}
private SSLContext getSSLContext() {
if (this.sslcontext == null) {
this.sslcontext = createSSLContext();
}
return this.sslcontext;
}
public Socket createSocket(Socket socket, String host, int port,
boolean autoClose) throws IOException, UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(socket, host,
port, autoClose);
}
public Socket createSocket(String host, int port) throws IOException,
UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(host, port);
}
public Socket createSocket(String host, int port, InetAddress clientHost,
int clientPort) throws IOException, UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(host, port,
clientHost, clientPort);
}
public Socket createSocket(String host, int port, InetAddress localAddress,
int localPort, HttpConnectionParams params) throws IOException,
UnknownHostException, ConnectTimeoutException {
if (params == null) {
throw new IllegalArgumentException("Parameters may not be null");
}
int timeout = params.getConnectionTimeout();
SocketFactory socketfactory = getSSLContext().getSocketFactory();
if (timeout == 0) {
return socketfactory.createSocket(host, port, localAddress,
localPort);
} else {
Socket socket = socketfactory.createSocket();
SocketAddress localaddr = new InetSocketAddress(localAddress,
localPort);
SocketAddress remoteaddr = new InetSocketAddress(host, port);
socket.bind(localaddr);
socket.connect(remoteaddr, timeout);
return socket;
}
}
// 自定义私有类
private static class TrustAnyTrustManager implements X509TrustManager {
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[] {};
}
}
}
- 再注册
Protocol myhttps = new Protocol("https", new MySSLSocketFactory(), 443);
Protocol.registerProtocol("https", myhttps);
- 最后就可以根据 httpclient 进行正常的 发送请求了:如 TestHttps.java
package com.zc.myhttps;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Iterator;
import java.util.Map;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.protocol.Protocol;
public class TestHttps {
public static String sendByGet(String url) {
HttpClient httpclient = null;
GetMethod method = null;
String result = "";
try {
httpclient = new HttpClient();
method = new GetMethod(url);
httpclient.executeMethod(method);
BufferedReader bs = new BufferedReader(new InputStreamReader(
method.getResponseBodyAsStream(), "utf-8"));
String line = "";
while ((line = bs.readLine()) != null) {
result += line;
}
System.out.println("==========================获取到的结果");
System.out.println(result);
// System.out.println();
// System.out.println("HttpsUtil-sendByGet-url=" + url + "-result="
// + result);
} catch (Exception ex) {
ex.printStackTrace();
result = "error crm error " + ex.toString();
System.out.println("HttpsUtil-sendByGet-url=" + url + "-result="
+ ex.toString());
} finally {
if (method != null) {
method.releaseConnection();
}
}
return result;
}
public static String sendByPost(String url, Map param) {
HttpClient httpclient = null;
PostMethod method = null;
String result = "";
try {
httpclient = new HttpClient();
method = new PostMethod(url);
if (param != null && !param.isEmpty()) {
int len = param.size();
method.setRequestHeader("Content-Type",
"application/x-www-form-urlencoded;charset=utf-8");
NameValuePair[] np = new NameValuePair[len];
Iterator iter = param.keySet().iterator();
int i = 0;
while (iter.hasNext()) {
String k = (String) iter.next();
String v = (String) param.get(k);
np[i].setName(k);
np[i].setValue(v);
}
method.setRequestBody(np);
}
httpclient.executeMethod(method);
// result = method.getResponseBodyAsString();
BufferedReader bs = new BufferedReader(new InputStreamReader(
method.getResponseBodyAsStream(), "utf-8"));
String line = "";
while ((line = bs.readLine()) != null) {
result += line;
}
System.out.println("HttpsUtil-sendByPost-url=" + url + "-result="
+ result);
} catch (Exception ex) {
ex.printStackTrace();
result = "error crm error " + ex.toString();
System.out.println("HttpsUtil-sendByPost-url=" + url + "-result="
+ ex.toString());
} finally {
if (method != null) {
method.releaseConnection();
}
}
return result;
}
public static void main(String[] args) {
Protocol myhttps = new Protocol("https", new MySSLSocketFactory(), 443);
Protocol.registerProtocol("https", myhttps);
sendByGet("https://translate.google.com/#en/zh-CN/word");
}
}
1.3 进行处理具体的翻译请求
- chrome 下通过调试工具找到具体的请求头,比如查询 "word",会发现如何请求 头:
https://translate.google.com/translate_a/single?client=t&sl=en&tl=zh-CN&hl=zh-CN&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&ie=UTF-8&oe=UTF-8&source=bh&ssel=0&tsel=0&kc=1&tk=253493.388741&q=word
并且可以查看到响应的Response.
- 分析Request,发现主要tk参数比如蛋疼,通过google搜索到一 个:https://github.com/cocoa520/Google_TK 感谢作者把这个tk参数搞出来.
- 有了这个 tk 参数 ,然后加上上面的 Request,就可以很快的构造需要的 url.最后按照上面的httpclient就可以随意处理了.
1.4 使用命令行执行 xxx.class
- 假如依赖 log4j json.jar
java -cp /Users/mac/work/eclipse_luna/com.zc.myhttps/target/classes:/Users/mac/.m2/repository/org/json/json/20160212/json-20160212.jar:/Users/mac/.m2/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar com.zc.myhttps.TestHttps
注意:
- -cp 相当于 -classpath
- /Users/mac/work/eclipseluna/com.zc.myhttps/target/classes 这个路径加上 com.zc.myhttps.TestHttps 就可以找到 main 函数所在的文件.
- -cp 后面依赖的jar包的分割符号是":"