一个httpclient 实例

工作中的httpclient 实例，使你较快熟悉httpclient使用流程。

1 httpclient测试类

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

import net.sf.json.JSONObject;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.impl.client. DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

import org.junit.Test;

import com.xx.AESAPPUtils;

import com.xx.GzipAESUtil;

public class HttpClientTest {

     @Test

     public void http() {

           String pre = "appUser/appCheckVersion";  //请求的Controller和对应的方法

           String url = "http://localhost:8080/ass/" + pre; // 请求url地址

           JSONObject jo = new JSONObject();

           jo.put( "sjId", "" + new Date().getTime());

           jo.put( "jkId", "mtms001");

           jo.put( "mkId", "1002");

           jo.put( "userId", "0004019153");

           jo.put( "baiduId", "4dasxc");

           jo.put( "appType", "ios");

           jo.put( "appVersion", "1.0.1");

           System. out.println(jo.toString()); // 将请求参数封装成json格式

            try {

                HttpPost httppost = new HttpPost(url);

                List<NameValuePair> params = new ArrayList<NameValuePair>();

                params.add( new BasicNameValuePair( "ass", AESAPPUtils.encryptAES(jo

                           .toString()))); // 传递给后台的参数只有一个，名为ass，参数值由AESAPPUtils.encryptAES方法加密生成。提高安全性。

                httppost.setEntity( new UrlEncodedFormEntity(params, "UTF-8" )); 

                HttpResponse httpResponse = new DefaultHttpClient()

                           .execute(httppost); // 发起请求

                HttpEntity entity2 = httpResponse.getEntity();  // 得到回复

                String result = EntityUtils. toString(entity2);

                System. out.println(GzipAESUtil. decryptAESThenUnCompress(result));

           } catch (Exception e) {

                e.printStackTrace();

           }

     }

}

2 后台的controller

import java.util.Map;

import javax.annotation.Resource;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONObject;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

import com.xx.APPErrorInfo;

import com.xx.AppUserService;

import com.xx.GzipAESUtil;

import com.xx.ReciveMessageConvert;

@Controller

@RequestMapping("/appUser" )

public class AppUserController {

     

     @Resource

     private AppUserService appUserService;

     

     private static final Logger log = LoggerFactory.getLogger(AppUserController. class);

     

     @RequestMapping(value= "/appCheckVersion ", produces="text/plain;charset=UTF-8" )

     public @ResponseBody String appCheckVersion (HttpServletRequest request, HttpServletResponse response){

           Map<String, Object> appParam = null;

           JSONObject result =  new JSONObject();

            try {

                appParam = ReciveMessageConvert.requestToMap(request);

                result = appUserService.appCheckVersion(appParam);  

           } catch (Exception e) {

                 log.error(e.getMessage(),e);

                result.put(APPErrorInfo. ERRORCODE, APPErrorInfo.E10000);

                result.put(APPErrorInfo. ERRORMSG, APPErrorInfo.M10000);

           }

            log.info( "reply message :\t"+result.toString());

            return GzipAESUtil.compressThenEncryptAES(result.toString());

     }

}

3  ReciveMessageConvert 类

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class ReciveMessageConvert {

   

    private static Logger log = LoggerFactory.getLogger(ReciveMessageConvert. class);

    private static final String APP_MESSAGE_KEY = "ass";

   

    @SuppressWarnings("unchecked")

     public static Map<String, Object> requestToMap(HttpServletRequest request) throws Exception{

        String parameter = request.getParameter(APP_MESSAGE_KEY );

        String recive = AESAPPUtils. decryptAES(parameter);

        Map<String, Object> map = JsonUtil.jsonStringToMap(recive);

        log.info("recive message:\t"+recive);

        return map;

    }

}

4 加密解密工具类

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;



public class AESAPPUtils {

    public static byte[] key = new byte[] { 0x08, 0x08, 0x04, 0x0b, 0x02, 0x0f, 0x0b, 0x0c,0x01, 0x03, 0x09, 0x07, 0x0c, 0x03, 0x07, 0x0a };

    /*
     * 转为十六进制
     */
    private static String asHex(byte buf[]) {
        StringBuffer strbuf = new StringBuffer(buf.length * 2);
        int i;
        for (i = 0; i < buf.length; i++) {
            if (((int) buf[i] & 0xff) < 0x10)
                strbuf.append("0");
            strbuf.append(Long.toString((int) buf[i] & 0xff, 16));
        }
        return strbuf.toString();
    }

    /*
     * 转为二进制
     */
    private static byte[] asBin(String src) {
        if (src.length() < 1)
            return null;
        byte[] encrypted = new byte[src.length() / 2];
        for (int i = 0; i < src.length() / 2; i++) {
            int high = Integer.parseInt(src.substring(i * 2, i * 2 + 1), 16);
            int low = Integer.parseInt(src.substring(i * 2 + 1, i * 2 + 2), 16);
            encrypted[i] = (byte) (high * 16 + low);
        }
        return encrypted;
    }

    /*
     * 加密
     */

    public static String encryptAES(String data) {
        SecretKeySpec sKey = new SecretKeySpec(key, "AES");
        try {
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.ENCRYPT_MODE, sKey);
            byte[] encrypted = cipher.doFinal(data.getBytes());
            return asHex(encrypted);
        } catch (Exception e) {
            return null;
        }
    }
   
   
    /*
     * 解密
     */
    public static String decryptAES(String encData) {
        byte[] tmp = asBin(encData);
        SecretKeySpec sKey = new SecretKeySpec(key, "AES");
        try {
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.DECRYPT_MODE, sKey);
            byte[] decrypted = cipher.doFinal(tmp);
            return new String(decrypted);
        } catch (Exception e) {
            return null;
        }
    }
   
}

5 JsonUtil 类

import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Type;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONObject;
import net.sf.json.util.JSONBuilder;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.springframework.core.io.ClassPathResource;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;


@SuppressWarnings("all")
public final class JsonUtil {

    private static Logger log = Logger.getLogger(JsonUtil.class);
   
    /**
     * 获取到Map值；
     *
     * @param jsonString
     * @return
     * @throws IOException
     * @throws JsonMappingException
     * @throws JsonParseException
     */
    public static Map jsonStringToMap(String jsonString) throws Exception {
        Map hashMap = new HashMap();
        if (null == jsonString) {
            return null;
        }
        try {
            hashMap = (Map) getJsonStringToObject(jsonString, HashMap.class);
        } catch (Exception e) {
             e.printStackTrace();
        }
        return hashMap;
    }
   
    /**
     * JsonString 转换成对应Object
     *
     * @return
     * @throws IOException
     * @throws JsonMappingException
     * @throws JsonParseException
     */
    public static Object getJsonStringToObject(String jsonString, Class cls) throws Exception {
        JsonFactory factory = new JsonFactory();
        ObjectMapper mapper = new ObjectMapper(factory);
        return mapper.readValue(jsonString, cls);
    }
}

6 压缩加密解密压缩工具类

/**

 * 压缩加密  解密压缩

 */

public class GzipAESUtil {

     

     /**

      * 先压缩后加密

      * @param str 要处理的字符串

      * @return

      */

     public static String compressThenEncryptAES(String str){

            try {

                 return AESAPPUtils.encryptAES(GZipStrUtil.compress(str));

           } catch (Exception e) {

                e.printStackTrace();

                 return null;

           }

     }

     

     /**

      * 先解密后解压缩

      * @param str 要处理的字符串

      * @return

      */

     public static String decryptAESThenUnCompress(String str){

            try {

                 return GZipStrUtil.unCompress(AESAPPUtils.decryptAES(str));

           } catch (Exception e) {

                e.printStackTrace();

                 return null;

           }

     }

}