httpPost提交数据

import java.io.ByteArrayOutputStream;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.SocketTimeoutException;

import java.net.URL;

import java.net.URLDecoder;

import java.net.URLEncoder;

import java.util.Arrays;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.Set;

import javax.imageio.ImageIO;

import javax.imageio.ImageReader;

import javax.imageio.stream.ImageInputStream;

 

public class HttpPostUtil { 

    URL url; 

    HttpURLConnection conn; 

    String boundary = "--------httppost123"; 

    Map<String, String> textParams = new HashMap<String, String>(); 

    Map<String, File> fileparams = new HashMap<String, File>(); 

    DataOutputStream ds; 

 

    public HttpPostUtil(String url) throws Exception { 

        this.url = new URL(url); 

    } 

    //重新设置要请求的服务器地址，即上传文件的地址。 

    public void setUrl(String url) throws Exception { 

        this.url = new URL(url); 

    } 

    //增加一个普通字符串数据到form表单数据中 

    public void addTextParameter(String name, String value) { 

        textParams.put(name, value); 

    } 

    //增加一个文件到form表单数据中 

    public void addFileParameter(String name, File value) { 

        fileparams.put(name, value); 

    } 

    // 清空所有已添加的form表单数据 

    public void clearAllParameters() { 

        textParams.clear(); 

        fileparams.clear(); 

    } 

    // 发送数据到服务器，返回一个字节包含服务器的返回结果的数组 

    public byte[] send() throws Exception { 

        initConnection(); 

        try { 

            conn.connect(); 

        } catch (SocketTimeoutException e) { 

            // something 

            throw new RuntimeException(); 

        } 

        ds = new DataOutputStream(conn.getOutputStream()); 

        writeFileParams(); 

        writeStringParams(); 

        paramsEnd(); 

        InputStream in = conn.getInputStream(); 

        ByteArrayOutputStream out = new ByteArrayOutputStream(); 

        int b; 

        while ((b = in.read()) != -1) { 

            out.write(b); 

        } 

        out.flush(); 

     

        byte[] re  = null;

  try {

   re = out.toByteArray();

  } catch (Exception e) {

   e.printStackTrace();

      out=null;

      conn= null;

  }finally{

       out.close();

             out=null;

             conn.disconnect(); 

             conn= null;

  }

     

        return re; 

    } 

    //文件上传的connection的一些必须设置 

    private void initConnection() throws Exception { 

        conn = (HttpURLConnection) this.url.openConnection(); 

        conn.setDoOutput(true); 

        conn.setUseCaches(false); 

        conn.setConnectTimeout(10000); //连接超时为10秒 

        conn.setRequestMethod("POST"); 

        conn.setRequestProperty("Content-Type", 

                "multipart/form-data; boundary=" + boundary); 

        conn.setChunkedStreamingMode(1024 * 50); 

    } 

    //普通字符串数据 

    private void writeStringParams() throws Exception { 

        Set<String> keySet = textParams.keySet(); 

        for (Iterator<String> it = keySet.iterator(); it.hasNext();) { 

            String name = it.next(); 

            String value = textParams.get(name); 

            ds.writeBytes("--" + boundary + "\r\n"); 

            ds.writeBytes("Content-Disposition: form-data; name=\"" + name 

                    + "\"\r\n"); 

            ds.writeBytes("\r\n"); 

            ds.writeBytes(encode(value) + "\r\n"); 

        } 

    } 

    //文件数据 

    private void writeFileParams() throws Exception { 

        Set<String> keySet = fileparams.keySet(); 

        for (Iterator<String> it = keySet.iterator(); it.hasNext();) { 

            String name = it.next(); 

            File value = fileparams.get(name); 

            ds.writeBytes("--" + boundary + "\r\n"); 

            ds.writeBytes("Content-Disposition: form-data; name=\"" + name 

                    + "\"; filename=\"" + encode(value.getName()) + "\"\r\n"); 

            ds.writeBytes("Content-Type: " + getContentType(value) + "\r\n"); 

            ds.writeBytes("\r\n"); 

            ds.write(getBytes(value)); 

            ds.writeBytes("\r\n"); 

        } 

    } 

    //获取文件的上传类型，图片格式为image/png,image/jpg等。非图片为application/octet-stream 

    private String getContentType(File f) throws Exception { 

         

//      return "application/octet-stream";  // 此行不再细分是否为图片，全部作为application/octet-stream 类型 

        ImageInputStream imagein = ImageIO.createImageInputStream(f); 

        if (imagein == null) { 

            return "application/octet-stream"; 

        } 

        Iterator<ImageReader> it = ImageIO.getImageReaders(imagein); 

        if (!it.hasNext()) { 

            imagein.close(); 

            return "application/octet-stream"; 

        } 

        imagein.close(); 

        return "image/" + it.next().getFormatName().toLowerCase();//将FormatName返回的值转换成小写，默认为大写 

 

    } 

    //把文件转换成字节数组 

    private byte[] getBytes(File f) throws Exception { 

        FileInputStream in = new FileInputStream(f); 

        ByteArrayOutputStream out = new ByteArrayOutputStream(); 

        byte[] b = new byte[1024]; 

        int n; 

        while ((n = in.read(b)) != -1) { 

            out.write(b, 0, n); 

        } 

        in.close(); 

        return out.toByteArray(); 

    } 

    //添加结尾数据 

    private void paramsEnd() throws Exception { 

        ds.writeBytes("--" + boundary + "--" + "\r\n"); 

        ds.writeBytes("\r\n"); 

    } 

    // 对包含中文的字符串进行转码，此为UTF-8。服务器那边要进行一次解码 

    private String encode(String value) throws Exception{ 

        return URLEncoder.encode(value, "UTF-8"); 

    } 

    public static void main(String[] args) throws Exception { 

        HttpPostUtil u = new HttpPostUtil("http://localhost:8080/Test/synDataAction.do?method=test");

        u.addFileParameter("file", new File("F:/327.jpg")); 

        u.addTextParameter("ext_type", "picture"); 

        u.addTextParameter("remark", "sfw单位的微风dd哈哈哈哈");

        u.addTextParameter("user_id", "aa");

        u.addTextParameter("chn_id", "17818");

        byte[] b = u.send(); 

        String ss = new String(b);

        System.out.println(ss);

        

        

       /* HttpPostUtil u = new HttpPostUtil("http://localhost:8080/Test/synDataAction.do?method=test");

        u.addTextParameter("path", "/weblogic/upload/facadeImages/20141202112845_2.jpg"); 

        u.addTextParameter("user_id", "aa");

        byte[] b = u.send();

        //System.out.println(Arrays.toString(b));

       

        File f = new File("F:/a");

        if(!f.mkdir())

         f.mkdir();

        FileOutputStream out = new FileOutputStream(new File("F:/a/a.jpg"));

        try{

         out.write(b, 0, b.length);

         out.close();

        }catch (Exception e) {

         e.printStackTrace();

  }*/

     

     String str = "sfw%E5%8D%95%E4%BD%8D%E7%9A%84%E5%BE%AE%E9%A3%8Edd%E5%93%88%E5%93%88%E5%93%88%E5%93%88";

     

     System.out.println(URLDecoder.decode(str,
bfe8
"utf-8"));

    } 

 

}