（转）Java 兑现简单http服务端，客户端DEMO
其中用到一个加密解密工具类，如下：
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class DESHelper {
/**
* 加密解密接口
* @param data 数据
* @param password 加密解密密码 必须8位字节
* @param flag 加密解密标志 0：加密 ，1：解密
* @return
*/
public static String doWork(String data, String password,int flag) {
try {
SecureRandom random = new SecureRandom();
DESKeySpec desKey = new DESKeySpec(password.getBytes());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey securekey = keyFactory.generateSecret(desKey);
Cipher cipher = Cipher.getInstance("DES");
//
if(flag == 0){
BASE64Encoder base64encoder = new BASE64Encoder();
cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
return base64encoder.encode(cipher.doFinal(data.getBytes("UTF-8")));
}else{
BASE64Decoder base64decoder = new BASE64Decoder();
byte[] encodeByte = base64decoder.decodeBuffer(data);
cipher.init(Cipher.DECRYPT_MODE, securekey, random);
byte[] decoder = cipher.doFinal(encodeByte);
return new String(decoder,"UTF-8");
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* test
* @param args
*/
public static void main(String[] args) {
try {
// 明文
String str = "mobile:15810557051|type:0|content:你好";
// 密码
String password = "01010101";
String desc = DESHelper.doWork(str, password,0);
System.out.println("密文：" + desc);
// 解密
str = DESHelper.doWork(desc, password,1);
System.out.println("明文：" +str);
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
服务端需要一个jsp及一个java类，jsp直接调java类，或者直接写在servlet中也可以，服务端如下：
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.MalformedURLException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.sohu.lq.pub.util.DESHelper;
public class Server {
public static void post(HttpServletRequest request,HttpServletResponse response){
String result = "";
try {
request.setCharacterEncoding("UTF-8");
BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream()));
String line = "";
StringBuffer buf = new StringBuffer();
while ( (line = br.readLine()) != null ) {
buf.append(line);
}
result = buf.toString();
System.out.println(DESHelper.doWork(result, "01010101", 1));
response.setHeader("cache-control", "no-cache");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
OutputStreamWriter out = new OutputStreamWriter(response.getOutputStream());
String xmlInfo = "mobile:用户号码|type:运营商标志|content:你好";
out.write(DESHelper.doWork(xmlInfo, "01010101", 0));
out.flush();
out.close();
//System.out.println("返回："+xmlInfo);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
//return "toff : "+result;
}
}
server.jsp页面如下：
加入该jsp部署在本地，地址为：http://localhost:8080/sms/media/bus/server.jsp 客户端实现如下： 直接执行Client.java结果如下： 回复：mobile:用户号码|type:运营商标志|content:你好 该实例只是简单实现服务客户端模式，代码还需要优化，目前发送内容可以有多种方式，比如直接socket实现，或http实现，或者通过发布webservice实现，传输数据可以多种多样，标准的一般通过传输xml格式数据或json格式数据；目前json开源框架很多，可以进行json序列化反序列化，我用到一个XStream开源框架，来进行java对象与xml序列化反序列化，同时直接java对象与json序列化反序列化。 如果要做为多平台接口，建议通过发送标准的xml格式或json格式数据，这样扩展性更好。 <%@ page contentType="text/html; charset=gbk"%>
<%
com.sohu.sms.bus.Server.post(request,response);
%>
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import com.sohu.lq.pub.util.DESHelper;
public class Client {
public static void post(){
String result = "";
try {
String urlStr = "http://localhost:8080/sms/media/bus/server.jsp";
URL url = new URL(urlStr);
URLConnection con = url.openConnection();
con.setDoOutput(true);
con.setRequestProperty("Pragma:", "no-cache");
con.setRequestProperty("Cache-Control", "no-cache");
con.setRequestProperty("Content-Type", "text/html");
OutputStreamWriter out = new OutputStreamWriter(con.getOutputStream());
String xmlInfo = "mobile:用户号码|type:运营商标志|content:我来了";
out.write(DESHelper.doWork(xmlInfo, "01010101", 0));
out.flush();
out.close();
BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line = "";
StringBuffer buf = new StringBuffer();
while ( (line = br.readLine()) != null ) {
buf.append(line);
}
result = buf.toString();
result = DESHelper.doWork(result, "01010101", 1);
System.out.println("回复："+result);
//result = new String(DESHelper.doWork(result, "sopu01hz", 1));
//System.out.println(result);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args){
Client.post();
}
}