详解android与服务端交互的两种方式

package com.mfc.ctrl;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.mfc.dao.TblUserDao;
import com.mfc.entity.TblUser;

/**
 * 2017年7月6日06:26:40
 * 对用户操作的控制器类 
 * */
@Controller
@RequestMapping("tblUserCtrl")
public class TblUserCtrl {

  @Resource(name="tblUserDao")
  TblUserDao tblUserDao;

  //添加用户
  @RequestMapping("addUser")
  @ResponseBody
  public Object addUser(HttpServletRequest request){
    String uname=request.getParameter("uname");
    String upass=request.getParameter("upass");
    float money=Float.parseFloat(request.getParameter("money"));
    System.out.println(uname+"==="+upass+"==="+money);
    TblUser tblUser=new TblUser();
    tblUser.setMoney(money);
    tblUser.setUname(uname);
    tblUser.setUpass(upass);

    tblUserDao.addUser(tblUser);

    Map<String, Object> map=new HashMap<String, Object>();
    map.put("success", "success");
    return map;
  }

  //查看所有用户
  @RequestMapping("getAllUser")
  @ResponseBody
  public Object getAllUser(){
    List<TblUser> list = tblUserDao.selectAllUser();
    Map<String, Object> map=new HashMap<String, Object>();
    map.put("list", list);
    return map;
  }

  //删除用户
  @RequestMapping("delUser")
  @ResponseBody
  public Object delUser(HttpServletRequest request){
    int uid=Integer.parseInt(request.getParameter("uid"));
    TblUser tblUser=tblUserDao.getUserById(uid);
    tblUserDao.delUser(tblUser);
    Map<String, Object> map=new HashMap<String, Object>();
    map.put("success", "success");
    return map;
  }

  //修改用户
  @RequestMapping("updateUser")
  @ResponseBody
  public Object updateUser(HttpServletRequest request){
    int uid=Integer.parseInt(request.getParameter("uid"));
    String uname=request.getParameter("uname");
    String upass=request.getParameter("upass");
    float money=Float.parseFloat(request.getParameter("money"));
    TblUser tblUser=new TblUser();
    tblUser.setMoney(money);
    tblUser.setUid(uid);
    tblUser.setUname(uname);
    tblUser.setUpass(upass);
    tblUserDao.updateUser(tblUser);

    Map<String, Object> map=new HashMap<String, Object>();
    map.put("success", "success");
    return map;
  }
}

package com.mfc.urlutils;

import java.util.Map;

/**
 * 2017年7月6日06:42:10
 * 一些URL需要使用的公用数据及方法
 * */
public class SomePublicData {
  //公用path
  public static final String path="http://192.168.0.111:8080/MyeclipseService/tblUserCtrl/";

  //拼接path
  public static String fullPath(String pathlast, Map<String, String> map) {
    StringBuilder builder = new StringBuilder();
    String realPath = null;
    if(map!=null && !map.isEmpty()){
      //拼接url的参数部分
      for (Map.Entry<String, String> entrty : map.entrySet()) {
        builder.append(entrty.getKey()).append("=");
        builder.append(entrty.getValue()).append("&");
      }
      builder.deleteCharAt(builder.length()-1);
      //拼接最后完整的url
      realPath = SomePublicData.path+pathlast+"?"+builder;
      return realPath;
    }

    return SomePublicData.path+pathlast;
  }
}

package com.mfc.urlutils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;


/**
 * 2017年7月6日06:55:26
 * 将客户端数据传送到服务器，并接受服务器返回的数据
 * */
public class SendDateToServer {

  public static String sendToServer(String path){
    StringBuilder builder=new StringBuilder();
    try {
      HttpClient client=new DefaultHttpClient();
      if(path != null && path.length() > 0){
        if(client != null){
          HttpParams httpParams=client.getParams();
          if(httpParams != null){
            HttpConnectionParams.setConnectionTimeout(httpParams, 60000);
            HttpConnectionParams.setSoTimeout(httpParams, 60000);
            HttpGet get=new HttpGet(path);
            if(get != null){
               HttpResponse httpResponse=client.execute(get);
               if(httpResponse != null){
                 HttpEntity entity=httpResponse.getEntity();
                 if(entity != null){
                   BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(entity.getContent()));
                   String line = null;
                   while((line = bufferedReader.readLine()) != null){
                     builder.append(String.format("%s\n", line));
                   }
                   bufferedReader.close();
                 }
               }
            }
          }
        }
      }
    } catch (ClientProtocolException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return builder.toString();
  } 
}

package com.mfc.jsonutils;

import java.util.ArrayList;
import java.util.List;

import org.json.JSONObject;

import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonParser;
import com.mfc.entity.TblUser;

/**
 * 2017年7月6日07:15:32
 * 解析json数据的类
 * */
public class GetJsonToEntity {

  //解析单个数据
  public static TblUser getTblUser(String jsonString){
    Gson gson = new Gson();
    TblUser tblUser = gson.fromJson(jsonString, TblUser.class);
    return tblUser;
  }

  //解析list集合
  public static List<TblUser> getTblUserList(String gsonString) {
    List<TblUser> listusers=GsonUtil.parseJsonArrayWithGson(gsonString, TblUser.class);

    return listusers;
  }

}
/**
 * 2017年7月6日15:45:43
 * 封装的json解析工具类，提供泛型参数
 * */
class GsonUtil{
  //将json数据解析成相应的映射对象
  public static <T> T parseJsonWithGson(String jsonData,Class<T> type){
    Gson gson=new Gson();
    T result = gson.fromJson(jsonData, type);
    return result;
  }

  //将json数组解析成相应的映射对象列表
  public static <T> List<T> parseJsonArrayWithGson(String jsonData,Class<T> type){
    List<T> result = new ArrayList<T>(); 
    try { 
      Gson gson = new Gson(); 
      JSONObject jsonObject=new JSONObject(jsonData);
      String string=jsonObject.getString("list");
      JsonArray arry = new JsonParser().parse(string).getAsJsonArray(); 
      for (JsonElement jsonElement : arry) { 
        result.add(gson.fromJson(jsonElement, type)); 
      } 
    } catch (Exception e) { 
      e.printStackTrace(); 
    } 
    return result;
  }
}

 package com.mfc.jsonutils;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import com.mfc.entity.Task;


/**
 * 2017年6月25日21:34:44
 * 解析json的工具类
 * 这里面所有方法的key，都是json一层数据的键，注意传数据时调用本类方法的时候给的key值
 * */
public class ParseJson {

  //解析单条数据
  public static Task getTask(String key,String json){
    Task task=new Task();
    try {
      JSONObject jsonObject=new JSONObject(json);
      JSONObject taskObject=jsonObject.getJSONObject(key);
      task.setTid(taskObject.getInt("uid"));
      task.setContent(taskObject.getString("content"));
      task.setIssuccess(taskObject.getInt("issuccess"));
      task.setTasktime(taskObject.getString("tasktime"));
      task.setTitle(taskObject.getString("title"));
      task.setUid(taskObject.getInt("uid"));
    } catch (JSONException e) {
      e.printStackTrace();
    }
    return task;
  }

  //解析list集合
  public static List<Task> getListTask(String key,String jsonString){
    List<Task> list=new ArrayList<Task>();
    try {
      JSONObject jsonObject=new JSONObject(jsonString);
      //解析json数组
      JSONArray array=jsonObject.getJSONArray(key);
      for (int i = 0; i < array.length(); i++) {
        JSONObject jsonObject2=array.getJSONObject(i);
        Task task=new Task();
        task.setTid(jsonObject2.getInt("uid"));
        task.setContent(jsonObject2.getString("content"));
        task.setIssuccess(jsonObject2.getInt("issuccess"));
        task.setTasktime(jsonObject2.getString("tasktime"));
        task.setTitle(jsonObject2.getString("title"));
        task.setUid(jsonObject2.getInt("uid"));
        list.add(task);
      }
    } catch (JSONException e) {
      e.printStackTrace();
    }
    return list;
  }

  /** 
   * 获取String数组数据 
   * @param key 
   * @param jsonString 
   * @return 
   */ 
  public static List<String> getList(String key,String jsonString){ 
    List<String> list = new ArrayList<String>(); 
    try { 
      JSONObject jsonObject = new JSONObject(jsonString); 
      JSONArray jsonArray = jsonObject.getJSONArray(key); 
      for(int i=0;i<jsonArray.length();i++){ 
        String msg = jsonArray.getString(i); 
        list.add(msg); 
      } 
    } catch (JSONException e) { 
      e.printStackTrace(); 
    } 
    return list; 
  } 
  /** 
   * 获取对象的Map集合数据 
   * @param key 
   * @param jsonString 
   * @return 
   */ 
  public static List<Map<String,Object>> getListMap(String key,String jsonString){ 
    List<Map<String,Object>> list = new ArrayList<Map<String,Object>>(); 
    try { 
      JSONObject jsonObject = new JSONObject(jsonString); 
      JSONArray jsonArray = jsonObject.getJSONArray(key); 
      for(int i=0;i<jsonArray.length();i++){ 
        JSONObject jsonObject2 = jsonArray.getJSONObject(i); 
        Map<String,Object> map = new HashMap<String, Object>(); 
        Iterator<String> iterator = jsonObject2.keys(); 
        while(iterator.hasNext()){ 
          String json_key = iterator.next(); 
          Object json_value = jsonObject2.get(json_key); 
          if(json_value==null){ 
            json_value = ""; 
          } 
          map.put(json_key, json_value); 
        } 
        list.add(map); 
      } 
    } catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
    } 

    return list; 
  } 

}

package com.mfc.urlutils;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.http.entity.StringEntity;

import android.util.Log;

public class HttpUtils {
  static String TAG="HttpUtils";

  /**
   * 从服务器获取json数据
   * */
  public static String getJsonContent(String path){
    String jsonString="";
    try {
      URL url=new URL(path);
      HttpURLConnection connection=(HttpURLConnection) url.openConnection();
      connection.setConnectTimeout(3000);
      connection.setRequestMethod("GET");
      connection.setDoInput(true);
      int code=connection.getResponseCode();
      if(code==200){
        InputStream inputStream=connection.getInputStream();
        ByteArrayOutputStream outputStream=new ByteArrayOutputStream();
        int len=0;
        byte[] data=new byte[1024];
        while ((len=inputStream.read(data))!=-1) {
          outputStream.write(data, 0, len);
        }
        jsonString=new String(outputStream.toByteArray());
        Log.i(TAG, jsonString);
      }
    } catch (MalformedURLException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return jsonString;
  }
}

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