前項目使用這種HTTP的方式進行數據交互，目前已更換數據交互方式，但是作為接口提供調用來說還是比較簡潔高效的：

總體流程就是：

1、發送HTTP請求

2、獲取返回的JSON對象

3、JSON轉換

package com.xx;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

import java.util.List;

import java.util.Map;

public class SendGetPost {

/**

* 發送get請求

* 參數設置：？param=val?m2=val2

* @author TF

*

*/

public static String sendGet(String url){

String result = "";

BufferedReader in = null;

try {

//創建URL對象、

URL urlGet =new URL(url);

//打開URL連接

URLConnection connection = urlGet.openConnection();

//設置請求頭信息

connection.setRequestProperty("accept", "*/*");

connection.setRequestProperty("connection", "Keep-Alive");

connection.setRequestProperty("user-agent","Mozilla/5.0 (Windows NT 6.1; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0");

connection.setRequestProperty("contentType", "UTF-8");

//建立連接

connection.connect();

// 獲取所有響應頭字段

Map> map = connection.getHeaderFields();

// 定義 BufferedReader輸入流來讀取URL的響應

in = new BufferedReader(new InputStreamReader(connection.getInputStream(),"UTF-8"));

String line;

while ((line = in.readLine()) != null) {

result += line;

}

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return result;

}

/**

* 發送post請求

* 參數設置param1=val1&m2=val2

*

* */

public static String sendPost(String url,String param){

String result = "";

BufferedReader in = null;

OutputStreamWriter out = null;

try {

//創建URL對象、

URL urlPost = new URL(url);

//打開URL連接

URLConnection connection = urlPost.openConnection();

HttpURLConnection conn = (HttpURLConnection) connection;

// 設置通用的請求屬性

conn.setRequestProperty("accept", "*/*");

conn.setRequestProperty("connection", "Keep-Alive");

conn.setRequestProperty("user-agent","Mozilla/5.0 (Windows NT 6.1; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0");

conn.setRequestMethod("POST");

// 發送POST請求必須設置如下兩行

conn.setDoOutput(true);

conn.setDoInput(true);

// 獲取URLConnection對象對應的輸出流

out = new OutputStreamWriter(conn.getOutputStream(),"UTF-8");

// 發送請求參數

out.write(param);

// flush輸出流的緩沖

out.flush();

// 定義BufferedReader輸入流來讀取URL的響應

in = new BufferedReader(

new InputStreamReader(conn.getInputStream(),"UTF-8"));

String line;

while ((line = in.readLine()) != null) {

result += line;

}

} catch (MalformedURLException e) {

System.out.println("error");

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return result;

}

}

總結

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