java 远程访问接口

package com.test;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.StringBufferInputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;

public class TestStateQuery {

public String connectServlet(String url,String businessnoXml){
String strReturnXML="";
HttpURLConnection httpConnection;
try {
// 1、打开连接
httpConnection = (HttpURLConnection) new URL(url).openConnection();
httpConnection.setRequestMethod("POST");
httpConnection.setDoOutput(true);
httpConnection.setDoInput(true);
httpConnection.setAllowUserInteraction(true);
httpConnection.connect();
// 2、发送数据
OutputStream outputStream = httpConnection.getOutputStream();

byte[] buffer = new byte[1024];
// InputStream stringBufferInputStream = new StringBufferInputStream(businessnoXml);

InputStream stringBufferInputStream =  new ByteArrayInputStream(businessnoXml.getBytes());

while (true) {
int bytesRead = stringBufferInputStream.read(buffer);
if (bytesRead == -1)
break;
outputStream.write(buffer, 0, bytesRead);
//outputStream.write(buffer);
}

outputStream.flush();
stringBufferInputStream.close();
outputStream.close();
// 3、返回数据
InputStreamReader inputStreamReader = new InputStreamReader(httpConnection.getInputStream());
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String inputLine = "";
StringBuffer inputLines = new StringBuffer();
while ((inputLine = bufferedReader.readLine()) != null) {
inputLines.append(inputLine);
}
inputStreamReader.close();
bufferedReader.close();
// 4、关闭连接
httpConnection.disconnect();
strReturnXML = inputLines.toString();

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

return strReturnXML.toString();
}

public static void main(String[] args) {
String resultXML = "";
TestStateQuery test = new TestStateQuery();
String url = "http://localhost:7001/undwrt/ServletName";
String  filePath ="E:/sendXML/zhongxin.xml";
resultXML = test.connectServletUserXmlFile(url, filePath);
//resultXML = test.connectServlet( url, businessno);
System.out.println("resultXML:"+resultXML);
}

public String connectServletUserXmlFile(String url,String filePath){
String strReturnXML="";
HttpURLConnection httpConnection;
try {
// 1、打开连接
httpConnection = (HttpURLConnection) new URL(url).openConnection();
httpConnection.setRequestMethod("POST");
httpConnection.setDoOutput(true);
httpConnection.setDoInput(true);
httpConnection.setAllowUserInteraction(true);
httpConnection.connect();
// 2、发送数据
OutputStream outputStream = httpConnection.getOutputStream();
byte[] buffer = new byte[1024];
// InputStream stringBufferInputStream = new StringBufferInputStream(businessnoXml);

//InputStream stringBufferInputStream =  new ByteArrayInputStream(businessnoXml.getBytes());
File file = new File(filePath);

InputStream in = new FileInputStream(file);

while (true) {
int bytesRead = in.read(buffer);
if (bytesRead == -1)
break;
outputStream.write(buffer, 0, bytesRead);
//outputStream.write(buffer);
}

outputStream.flush();
in.close();
outputStream.close();
// 3、返回数据
InputStreamReader inputStreamReader = new InputStreamReader(httpConnection.getInputStream());
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String inputLine = "";
StringBuffer inputLines = new StringBuffer();
while ((inputLine = bufferedReader.readLine()) != null) {
inputLines.append(inputLine);
}
inputStreamReader.close();
bufferedReader.close();
// 4、关闭连接
httpConnection.disconnect();
strReturnXML = inputLines.toString();

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

return strReturnXML.toString();
}

}