JAVA_JSON_example

package cn.kjxy.JSON;

import java.util.List;

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

/**
* 解析网络数据
*     path："http://interfacev5.vivame.cn/x1-interface-v5/json/newdatalist.json?platform=android&installversion=5.2.0&channelno=OPPOA2320480100&mid=0a0fec95ea3364f43798a33fc3616780&uid=3348521&sid=a27ef935-f451-46ad-962b-0a48c47d47ae&type=-1&id=-1&category=-1&ot=0&nt=0"
*    步骤：1.获取路径
*        2.通过HttpClient从该网络路径获取json数据
*        3.通过bejson工具进行json校验
*        4.创建相关对象或数组进行json解析
* @author Administrator
*   注意： 需导入HttpClient的三个jar包及JSON的jar包
*/

class Item{
private int stypeid;//": 3,
private  String stypename;//: "图集",
private String title;//": "暴雨致赣南5.3万人受灾",
private String img;//": "http://stcv5.vivame.cn/pmsV5/upload/file/20160323/f116d696-c777-43a0-a709-d044dec48900.jpg",
public int getStypeid() {
return stypeid;
}
public void setStypeid(int stypeid) {
this.stypeid = stypeid;
}
public String getStypename() {
return stypename;
}
public void setStypename(String stypename) {
this.stypename = stypename;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getImg() {
return img;
}
public void setImg(String img) {
this.img = img;
}
@Override
public String toString() {
return "Items [stypeid=" + stypeid + ", stypename=" + stypename
+ ", title=" + title + ", img=" + img + "]";
}

}
public class Demo2 {
public static void main(String[] args) {
String path = "http://interfacev5.vivame.cn/x1-interface-v5/json/newdatalist.json?platform=android&installversion=5.2.0&channelno=OPPOA2320480100&mid=0a0fec95ea3364f43798a33fc3616780&uid=3348521&sid=a27ef935-f451-46ad-962b-0a48c47d47ae&type=-1&id=-1&category=-1&ot=0&nt=0";
//应用自制工具类解析JSON数据
String json = HttpHelpers.getResourceByInternet(path);
parserJSON(json);
}

private static void parserJSON(String json) {
// TODO Auto-generated method stub
try {
//创建JSON对象
JSONObject jsonObject = new JSONObject(json);
JSONObject data = jsonObject.getJSONObject("data");
JSONArray feedList = data.getJSONArray("feedlist");
for (int i = 0; i < feedList.length(); i++) {
JSONObject jsonObject2 = feedList.getJSONObject(i);
JSONArray items = jsonObject2.getJSONArray("items");
for (int j = 0; j < items.length(); j++) {
JSONObject jsonObject3 = items.getJSONObject(j);
Item item =  new Item();
item.setStypeid(jsonObject3.getInt("stypeid"));
item.setStypename(jsonObject3.getString("stypename"));
item.setTitle(jsonObject3.getString("title"));
item.setImg(jsonObject3.getString("img"));
System.out.println(item);
}

}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

package cn.kjxy.JSON;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
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;

/**
* 请求网络的工具类
*
* @author Administrator
*
*/
public class HttpHelpers {

/**
* 下载图片 保存到byte类型的数组中
*
* @param path
*            地址
* @return byte[]
*/
public static byte[] downLoadImg(String path) {
BufferedInputStream bis = null;
try {
// 1,创建HttpClient对象 Android6.0之前可以使用
HttpClient httpClient = new DefaultHttpClient();
// 2,创建请求对象+指定地址
HttpGet httpGet = new HttpGet(path);
// 3,执行请求 获得HttpResponse对象
HttpResponse response = httpClient.execute(httpGet);
// 4,获得响应码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
// 5,得到响应的HttpEntity对象
HttpEntity responseEntity = response.getEntity();
// 方法一
// bis = new BufferedInputStream(responseEntity.getContent());
// byte b[] = toByteArray(bis);
// return b;

// 方法二
return EntityUtils.toByteArray(responseEntity);

}

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (bis != null) {
try {
bis.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

return null;

}

/**
* 把图片下载到本地磁盘
*
* @param path
*/
public static void downLoadImgToLocal(String path) {
BufferedInputStream bis = null;
BufferedOutputStream boStream = null;
try {
// 1,创建HttpClient对象 Android6.0之前可以使用
HttpClient httpClient = new DefaultHttpClient();
// 2,创建请求对象+指定地址
HttpGet httpGet = new HttpGet(path);
// 3,执行请求 获得HttpResponse对象
HttpResponse response = httpClient.execute(httpGet);
// 4,获得响应码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
// 5,得到响应的HttpEntity对象
HttpEntity responseEntity = response.getEntity();
// 方法一
// bis = new BufferedInputStream(responseEntity.getContent());
// byte b[] = toByteArray(bis);

// 方法二
byte b[] = EntityUtils.toByteArray(responseEntity);
String endsWith = path.substring(path.lastIndexOf("."));
boStream = new BufferedOutputStream(new FileOutputStream((int) (Math.random() * 100) + endsWith));
boStream.write(b);

}

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (bis != null) {
try {
bis.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (boStream != null) {
try {
boStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

}

/**
* 从互联网获取文本 json xml
*
* @param path
*            地址
* @return 获取到的文本数据
*/

public static String getResourceByInternet(String path) {
BufferedReader bReader = null;
try {
// 1,创建HttpClient对象 Android6.0之前可以使用
HttpClient httpClient = new DefaultHttpClient();
// 2,创建请求对象+指定地址
HttpGet httpGet = new HttpGet(path);
// 3,执行请求 获得HttpResponse对象
HttpResponse response = httpClient.execute(httpGet);
// 4,获得响应码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
// 得到HttpEntity对象
HttpEntity responseEntity = response.getEntity();
// 方法一
// bReader = new BufferedReader(new
// InputStreamReader(responseEntity.getContent()));
// StringBuilder sbBuilder = new StringBuilder();
// String line = null;
// while ((line = bReader.readLine()) != null) {
// sbBuilder.append(line);
// }
//
// return sbBuilder.toString();

// 方法二
return EntityUtils.toString(responseEntity);

}

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (bReader != null) {
try {
bReader.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

return null;

}

public static byte[] toByteArray(BufferedInputStream bufferedInputStream) {
byte b[] = new byte[1024 * 1024];
int len = 0;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
while ((len = bufferedInputStream.read(b)) != -1) {
baos.write(b, 0, len);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return baos.toByteArray();

}

public static String upLoadData(String path, Map<String, String> map) {
BufferedReader bReader = null;
try {
// 1,创建HttpClient对象 Android6.0之前可以使用
HttpClient httpClient = new DefaultHttpClient();
// 2,创建请求对象+指定地址
HttpPost httpPost = new HttpPost(path);
// 设置用于发送到服务端的参数
List<NameValuePair> list = new ArrayList<NameValuePair>();

for (String string : map.keySet()) {
list.add(new BasicNameValuePair(string, map.get(string)));
}
HttpEntity requestEntity = new UrlEncodedFormEntity(list, "gbk");
httpPost.setEntity(requestEntity);

// 3,执行请求 获得HttpResponse对象
HttpResponse response = httpClient.execute(httpPost);
// 4,获得响应码
int code = response.getStatusLine().getStatusCode();
if (code == 200) {
// 得到HttpEntity对象
HttpEntity responseEntity = response.getEntity();
// 方法一
// bReader = new BufferedReader(new
// InputStreamReader(responseEntity.getContent()));
// StringBuilder sbBuilder = new StringBuilder();
// String line = null;
// while ((line = bReader.readLine()) != null) {
// sbBuilder.append(line);
// }
//
// return sbBuilder.toString();

// 方法二
return EntityUtils.toString(responseEntity, "gbk");

}

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (bReader != null) {
try {
bReader.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

return null;

}

public static void main(String[] args) {
byte b[] = downLoadImg("http://images.china.cn/attachement/jpg/site1000/20140313/844bf52c7d7c148b8abc05.jpg");
BufferedOutputStream bufferedOutputStream;
try {
bufferedOutputStream = new BufferedOutputStream(new FileOutputStream("ceo.jpg"));
// bufferedOutputStream.write(b);

} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

// downLoadImgToLocal("http://images.china.cn/attachement/jpg/site1000/20140313/844bf52c7d7c148b8abc05.jpg");

// System.out.println(getResourceByInternet("http://www.doukantv.com/api/hot/?type=movie&cli=ipad&sys_ver=7.1.1&ver=2.1"));
Map<String, String> map = new HashMap<String, String>();
map.put("uname", "张三");
map.put("pwd", "admin");
System.out.println(upLoadData("http://172.20.136.5:8080/2016_05_27_server/login", map));

}

}