HttpClient--BasicNameValuePair

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.xml.rpc.ServiceException;

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.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import net.sf.json.JSONObject;

public class Test3 {
public static void main(String[] args) throws ServiceException, ClientProtocolException, IOException {
	HttpClient hc=HttpClients.createDefault();
	HttpPost post=new HttpPost("http://62.xx.xx.122:9xx0/TaxHttpService/tax_getInfo");
	Map map=new HashMap();
	map.put("infoKind",2);
	String params=JSONObject.fromObject(map).toString();
	
	List<BasicNameValuePair> param=new ArrayList<BasicNameValuePair>();
	param.add(new BasicNameValuePair("inputJson", params));
	//HttpEntity hh=new StringEntity(params,"UTF-8");
	UrlEncodedFormEntity he=new UrlEncodedFormEntity(param,"UTF-8");
	post.setEntity(he);
	HttpResponse res=hc.execute(post);
	HttpEntity entity=res.getEntity();
	String msg=EntityUtils.toString(entity,"UTF-8");
	System.out.println(msg);
}
}

传递简单{'a':{'c':'d'}}形式的json数据，只能用上面的转换来转换去才成功调通，

这里要记一下EntityUtils和UrlEncodedFormEntity类，一个转换HttpEntity为字符串，一个是对HttpEntity先转换成UTF-8，然后再用URLEncoder转码

下面构造的数据不能用Map存储键值再转换成JSON，暂时并不知道为什么，可能是对方接口解析接收参数的问题，所以弄得很古灵精怪的，用下面的方法才接通。

构造的数据是:

[inputJson={"infoKind":2,"cName":"fsdfs","taxRate":17,"invoicer":"zzzzz","sAddress":"ddddddddddd","sBank":"ddddddddddd","details":[{"amount":88.12,"goodsName":"asdaas","priceKind":0,"taxRate":17}]}]

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

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.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class Test4 {

	public static void main(String[] args) throws ClientProtocolException, IOException {
		// TODO Auto-generated method stub
new Test4().test();
	}
public String invoice(){
	JSONObject obj=new JSONObject();
	obj.put("infoKind", 2);
	obj.put("cName", "fsdfs");
	obj.put("taxRate", 17);
	obj.put("invoicer", "zzzzz");
	obj.put("sAddress", "ddddddddddd");
	obj.put("sBank", "ddddddddddd");
	
	JSONArray arr=new JSONArray();
	JSONObject d=new JSONObject();
	d.put("amount", 88.12);
	d.put("goodsName", "asdaas");
	d.put("priceKind", 0);
	d.put("taxRate", 17);
 d.put("goodsTaxNo", "10101013301");
    d.put("taxPre", 0);
    d.put("taxPreCon", "免税");
    d.put("goodsNoVer", "1.0");
 
	//String jsonstr=d.toString();
	arr.add(d);
	obj.put("details", arr);
	System.out.println(obj.toString());
	return obj.toString();
}
public void test() throws ClientProtocolException, IOException{
	HttpClient hc=HttpClients.createDefault();
	HttpPost post=new HttpPost("http://11.11.11.11xxxx");
	List<BasicNameValuePair> nv=new ArrayList<BasicNameValuePair>();
	nv.add(new BasicNameValuePair("inputJson", invoice()));
	UrlEncodedFormEntity he=new UrlEncodedFormEntity(nv,"utf-8");
	post.setEntity(he);
	HttpResponse res=hc.execute(post);
	HttpEntity entity=res.getEntity();
	String msg=EntityUtils.toString(entity,"UTF-8");
	System.out.println(">>>>>>>>>>>>>>>>>"+msg);
}
}