使用HttpClient实现对第三方服务器的请求并接受返回数据

/*
* 创建日期 2017-4-7
*
* TODO 要更改此生成的文件的模板，请转至
* 窗口 － 首选项 － Java － 代码样式 － 代码模板
*/
package com.enfo.intrust.command;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.*;
import net.sf.json.JSONObject;
import java.util.Properties;
import java.io.IOException;/**
* @author tapt
*
* TODO 要更改此生成的类型注释的模板，请转至
* 窗口 － 首选项 － Java － 代码样式 － 代码模板
*/public class BankCommandService {
private static String rootURL="";//银企直联平台服务器地址
private static Properties commandProperties=new Properties();
//读取银企直联平台配置文件的属性
static{
try {
commandProperties.load(BankCommandService.class.getResourceAsStream("BankCommand.properties"));
rootURL=commandProperties.getProperty("rootURL");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} /**
* @TODO 通用方法，传入一个json，连接银企直联平台，返回平台响应的json
* */
public String sendCommand(String commandURL,String sendJson){
String resultJson="银企直连平台返回异常";
try {
// 新建HttpClient对象，用于访问银企直联平台；
HttpClient httpClient = new HttpClient();
PostMethod postMethod = new PostMethod(commandURL);
// 让post请求携带json数据
RequestEntity requestEntity = new StringRequestEntity(sendJson,"application/json", "UTF-8");
postMethod.setRequestEntity(requestEntity);
// 发送post请求
httpClient.executeMethod(postMethod);
// 得到从银企直联响应的json数据
resultJson = new String(postMethod.getResponseBody());
} catch (Exception e) {
e.printStackTrace();
}
return resultJson;
} /**
* @TODO 直接划款
* */
public String directPay(String sendJson){
String commandURL=rootURL+commandProperties.getProperty("directPayCommand");
return sendCommand(commandURL,sendJson);
} /**
* @TODO 批量查询余额
* */
public String getBalanceBatch(String sendJson){
String commandURL=rootURL+commandProperties.getProperty("getBalanceBatchCommand");
return sendCommand(commandURL,sendJson);
} /**
* @TODO 查询账户列表
* */
public String getAccountList(String sendJson){
String commandURL=rootURL+commandProperties.getProperty("getAccountListCommand");
return sendCommand(commandURL,sendJson);
} /**
* @TODO 用于测试银企直联返回数据的方法-查询所有账户列表
* */
public static void main(String[] args) {
JSONObject jsonObject = new JSONObject();
JSONObject headvalue=new JSONObject();
JSONObject bodyvalue=new JSONObject();
JSONObject infovalue=new JSONObject();
headvalue.put("request_no", "");
headvalue.put("device_type", "");
headvalue.put("cust_id", "");
headvalue.put("router", "");
headvalue.put("channel", "");
headvalue.put("app_id", "");
headvalue.put("charset", "UTF-8");
headvalue.put("version", "1.0.0.1");
headvalue.put("sign", "MScRd7GM52W41VpRGxn7BtNWsSLM/RZPzbIGjxQFiChQcN8CXTjFU9MVtDP7NXxgZZddVc+NOc+P91anV9fQ1TjtdYZJr5hg1xPP/CAokB5LlxANnc+UfBcGQWGRGjXa/wijRPvdu7hiHEKW4dNt6giQgQMlcH/1eobXY5Z4pmU=");
headvalue.put("language", "CN"); jsonObject.put("head", headvalue); infovalue.put("buscod", "n03010");
infovalue.put("busmod", ""); bodyvalue.put("info", infovalue); jsonObject.put("body", bodyvalue);
//创建查询账户列表的发送json
System.out.println("要传入到银企直联的json数据是:\n"+jsonObject.toString());
System.out.println("从银企直联平台查询账号列表，接收到的响应是:");
//调用业务逻辑方法，取得返回的json并打印
String resultString=new BankCommandService().getAccountList(jsonObject.toString());
System.out.println(resultString);
}
}