android和struts2实现android文件上传

1.开发准备如下2个工具类

package org.lxh.util;    import java.io.BufferedReader;  import java.io.InputStreamReader;  import java.io.OutputStream;  import java.net.InetAddress;  import java.net.Socket;  import java.net.URL;  import java.util.Map;    /**   * 上传文件到服务器   *    * @author Administrator   *   */  public class SocketHttpRequester {      /**       * 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能:       *   <FORM METHOD=POST ACTION="http://192.168.1.101:8083/upload/servlet/UploadServlet" enctype="multipart/form-data">              <INPUT TYPE="text" NAME="name">              <INPUT TYPE="text" NAME="id">              <input type="file" name="imagefile"/>              <input type="file" name="zip"/>           </FORM>       * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.iteye.cn或http://192.168.1.101:8083这样的路径测试)       * @param params 请求参数 key为参数名,value为参数值       * @param file 上传文件       */      public static boolean post(String path, Map<String, String> params, FormFile[] files) throws Exception{               final String BOUNDARY = "---------------------------7da2137580612"; //数据分隔线          final String endline = "--" + BOUNDARY + "--\r\n";//数据结束标志                    int fileDataLength = 0;          for(FormFile uploadFile : files){//得到文件类型数据的总长度              StringBuilder fileExplain = new StringBuilder();               fileExplain.append("--");               fileExplain.append(BOUNDARY);               fileExplain.append("\r\n");               fileExplain.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");               fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");               fileExplain.append("\r\n");               fileDataLength += fileExplain.length();              if(uploadFile.getInStream()!=null){                  fileDataLength += uploadFile.getFile().length();               }else{                   fileDataLength += uploadFile.getData().length;               }          }          StringBuilder textEntity = new StringBuilder();          for (Map.Entry<String, String> entry : params.entrySet()) {//构造文本类型参数的实体数据              textEntity.append("--");              textEntity.append(BOUNDARY);              textEntity.append("\r\n");              textEntity.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n");              textEntity.append(entry.getValue());              textEntity.append("\r\n");          }          //计算传输给服务器的实体数据总长度          int dataLength = textEntity.toString().getBytes().length + fileDataLength +  endline.getBytes().length;                    URL url = new URL(path);          int port = url.getPort()==-1 ? 80 : url.getPort();          Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);              //socket.getSendBufferSize()          OutputStream outStream = socket.getOutputStream();                   //下面完成HTTP请求头的发送          String requestmethod = "POST "+ url.getPath()+" HTTP/1.1\r\n";          outStream.write(requestmethod.getBytes());          String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*\r\n";          outStream.write(accept.getBytes());          String language = "Accept-Language: zh-CN\r\n";          outStream.write(language.getBytes());          String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "\r\n";          outStream.write(contenttype.getBytes());          String contentlength = "Content-Length: "+ dataLength + "\r\n";          outStream.write(contentlength.getBytes());          String alive = "Connection: Keep-Alive\r\n";          outStream.write(alive.getBytes());          String host = "Host: "+ url.getHost() +":"+ port +"\r\n";          outStream.write(host.getBytes());          //写完HTTP请求头后根据HTTP协议再写一个回车换行          outStream.write("\r\n".getBytes());          //把所有文本类型的实体数据发送出来          outStream.write(textEntity.toString().getBytes());                     //把所有文件类型的实体数据发送出来          for(FormFile uploadFile : files){              StringBuilder fileEntity = new StringBuilder();               fileEntity.append("--");               fileEntity.append(BOUNDARY);               fileEntity.append("\r\n");               fileEntity.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");               fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");               outStream.write(fileEntity.toString().getBytes());               if(uploadFile.getInStream()!=null){                   byte[] buffer = new byte[1024];                   int len = 0;                   while((len = uploadFile.getInStream().read(buffer, 0, 1024))!=-1){                       outStream.write(buffer, 0, len);                   }                   uploadFile.getInStream().close();               }else{                   outStream.write(uploadFile.getData(), 0, uploadFile.getData().length);               }               outStream.write("\r\n".getBytes());          }          //下面发送数据结束标志，表示数据已经结束          outStream.write(endline.getBytes());                    BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));                    if(reader.readLine().indexOf("200")==-1){//读取web服务器返回的数据，判断请求码是否为200，如果不是200，代表请求失败              return false;          }          outStream.flush();          outStream.close();          reader.close();          socket.close();          return true;      }            /**       * 提交数据到服务器       * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://192.168.1.10:8080这样的路径测试)       * @param params 请求参数 key为参数名,value为参数值       * @param file 上传文件       */      public static boolean post(String path, Map<String, String> params, FormFile file) throws Exception{         return post(path, params, new FormFile[]{file});      }  }

package org.lxh.util;    import java.io.File;  import java.io.FileInputStream;  import java.io.FileNotFoundException;  import java.io.InputStream;    /**   * 上传文件   */  public class FormFile {      /* 上传文件的数据 */      private byte[] data;      private InputStream inStream;      private File file;      /* 文件名称 */      private String filname;      /* 请求参数名称*/      private String parameterName;      /* 内容类型 */      private String contentType = "application/octet-stream";            public FormFile(String filname, byte[] data, String parameterName, String contentType) {          this.data = data;          this.filname = filname;          this.parameterName = parameterName;          if(contentType!=null) this.contentType = contentType;      }            public FormFile(String filname, File file, String parameterName, String contentType) {          this.filname = filname;          this.parameterName = parameterName;          this.file = file;          try {              this.inStream = new FileInputStream(file);          } catch (FileNotFoundException e) {              e.printStackTrace();          }          if(contentType!=null) this.contentType = contentType;      }            public File getFile() {          return file;      }        public InputStream getInStream() {          return inStream;      }        public byte[] getData() {          return data;      }        public String getFilname() {          return filname;      }        public void setFilname(String filname) {          this.filname = filname;      }        public String getParameterName() {          return parameterName;      }        public void setParameterName(String parameterName) {          this.parameterName = parameterName;      }        public String getContentType() {          return contentType;      }        public void setContentType(String contentType) {          this.contentType = contentType;      }        }

这2个方法是用的比较广泛的，大家直接复制了拿去用就好了。

2.为了方便测试，建议复制一个文件到sd卡里面，我就直接上activity了

package org.lxh.upload;    import java.io.File;  import java.util.*;    import org.lxh.util.FormFile;  import org.lxh.util.SocketHttpRequester;    import android.app.Activity;  import android.app.Dialog;  import android.app.ProgressDialog;  import android.os.Bundle;  import android.os.Environment;    import android.util.Log;  import android.view.View;  import android.widget.Button;  import android.widget.EditText;  import android.widget.Toast;    public class UploadActivity extends Activity {        private File file;     private static final String TAG = "UploadActivity";     @Override   public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    //EditText filename = (EditText) this.findViewById(R.id.filename);    Button b = (Button) this.findViewById(R.id.button);      b.setOnClickListener(new View.OnClickListener() {       @Override     public void onClick(View v) {            // 创建file对象      file = new File(Environment.getExternalStorageDirectory(),        "gj.mp3");      if (!file.exists()) {       Toast.makeText(UploadActivity.this, "文件不存在",         Toast.LENGTH_LONG).show();      } else {       // Toast.makeText(UploadActivity.this,"文件存在",Toast.LENGTH_LONG).show();       uploadFile(file);       Toast.makeText(UploadActivity.this, "文件上传成功", 1).show();      }       }    });   }     public String uploadFile(File imageFile) {              try {     String requestUrl = "http://192.168.0.104:8080/LoginService/upload/upload/execute.do";     // 请求普通信息     Map params = new HashMap();     // params.put("filename", "张三");     params.put("name", "张三");     params.put("fileName", imageFile.getName());     // 上传文件     FormFile formfile = new FormFile(imageFile.getName(), imageFile,       "image", "application/octet-stream");          SocketHttpRequester.post(requestUrl, params, formfile);                } catch (Exception e) {     Log.i(TAG, "upload error");     e.printStackTrace();    }      Log.i(TAG, "upload end");    return "OK";   }     }

下面就是服务器端的代码了，我这里用struts2实现，struts1也是很方便的

package org.lxh;  import java.io.File;  import java.io.FileInputStream;  import java.io.FileOutputStream;  import java.io.IOException;    import javax.servlet.http.HttpServletRequest;    import org.apache.struts2.ServletActionContext;    import com.opensymphony.xwork2.ActionSupport;    /**   * 获取Android端上传过来的信息   *    * @author Administrator   *   */  @SuppressWarnings("serial")  public class UploadAction extends ActionSupport {      // 上传文件域      private File image;      // 上传文件类型      private String imageContentType;      // 封装上传文件名      private String imageFileName;      // 接受依赖注入的属性      private String savePath;        @Override      public String execute() {          HttpServletRequest request=ServletActionContext.getRequest();          FileOutputStream fos = null;          FileInputStream fis = null;          try {              System.out.println("获取Android端传过来的普通信息：");              //System.out.println("用户名："+request.getParameter("username"));              //System.out.println("密码："+request.getParameter("pwd"));              //System.out.println("年龄："+request.getParameter("age"));              System.out.println("文件名："+request.getParameter("fileName"));              System.out.println("获取Android端传过来的文件信息：");              System.out.println("文件存放目录: "+getSavePath());              System.out.println("文件名称: "+imageFileName);              System.out.println("文件大小: "+image.length());              System.out.println("文件类型: "+imageContentType);                            fos = new FileOutputStream(getSavePath() + "/" + getImageFileName());              fis = new FileInputStream(getImage());              byte[] buffer = new byte[1024];              int len = 0;              while ((len = fis.read(buffer)) != -1) {                  fos.write(buffer, 0, len);              }              System.out.println("文件上传成功");          } catch (Exception e) {              System.out.println("文件上传失败");              e.printStackTrace();          } finally {              close(fos, fis);          }          return SUCCESS;      }        /**       * 文件存放目录       *        * @return       */      public String getSavePath() throws Exception{          return ServletActionContext.getServletContext().getRealPath(savePath);       }        public void setSavePath(String savePath) {          this.savePath = savePath;      }        public File getImage() {          return image;      }        public void setImage(File image) {          this.image = image;      }        public String getImageContentType() {          return imageContentType;      }        public void setImageContentType(String imageContentType) {          this.imageContentType = imageContentType;      }        public String getImageFileName() {          return imageFileName;      }        public void setImageFileName(String imageFileName) {          this.imageFileName = imageFileName;      }        private void close(FileOutputStream fos, FileInputStream fis) {          if (fis != null) {              try {                  fis.close();                  fis=null;              } catch (IOException e) {                  System.out.println("FileInputStream关闭失败");                  e.printStackTrace();              }          }          if (fos != null) {              try {                  fos.close();                  fis=null;              } catch (IOException e) {                  System.out.println("FileOutputStream关闭失败");                  e.printStackTrace();              }          }      }    }

下面来看下运行效果

android和struts2实现android文件上传