java实现Post JSON请求

java实现Post JSON请求具体代码如下：
package com.sunkey.httpTest;
import java.io.DataOutputStream;
import java.io.InputStream;
import .URL;
import .URLConnection;
import mons.io.IOUtils;
public class HttpPostJson {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String URL = "http://localhost:18090";
String Json = findXmlInfo();
Json = "{\"姓名\" : \"大憨\",\"年龄\" : 24}";
String postResult = doHttpPost(Json,URL);
System.out.println("postResult:"+postResult);
}
private static String findXmlInfo() {
// TODO Auto-generated method stub
return null;
}
public static String doHttpPost(String xmlInfo,String URL){ System.out.println("发起的数据:"+xmlInfo);
byte[] xmlData = xmlInfo.getBytes(); InputStream instr = null;
java.io.ByteArrayOutputStream out = null;
try{
URL url = new URL(URL);
URLConnection urlCon = url.openConnection();
urlCon.setDoOutput(true);
urlCon.setDoInput(true);
urlCon.setUseCaches(false);
urlCon.setRequestProperty("Content-Type", "text/xml");
urlCon.setRequestProperty("Content-length",String.valueOf(xmlData.length));
System.out.println(String.valueOf(xmlData.length));
DataOutputStream printout = new DataOutputStream(urlCon.getOutputStream());
printout.write(xmlData);
printout.flush();
printout.close();
instr = urlCon.getInputStream();
byte[] bis = IOUtils.toByteArray(instr);
String ResponseString = new String(bis, "UTF-8");
if ((ResponseString == null) || ("".equals(ResponseString.trim()))) {
System.out.println("返回空");
}
System.out.println("返回数据为:" + ResponseString);
return ResponseString;
}catch(Exception e){
e.printStackTrace();
return "0";
}
finally {
try {
out.close();
instr.close();
}catch (Exception ex) {
return "0";
}
}
}
}。