Android拍照上传功能示例代码
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2024-03-07 10:55:26
本文实例讲述了android实现拍照上传功能的方法。分享给大家供大家参考,具体如下:
1、loginwindow.java --登录窗口
package com...
本文实例讲述了android实现拍照上传功能的方法。分享给大家供大家参考,具体如下:
1、loginwindow.java --登录窗口
package com.hemi.rhet; import com.hemi.rhet.r; import android.app.activity; import android.content.intent; import android.os.bundle; import android.view.keyevent; import android.view.view; import android.view.view.onclicklistener; import android.widget.button; import android.widget.checkbox; import android.widget.edittext; public class loginwindow extends activity { @override public void oncreate(bundle savedinstancestate) { system.out.println("enter loginwindow.oncreate()!"); super.oncreate(savedinstancestate); setcontentview(r.layout.login_window); musername = (edittext)findviewbyid(r.id.username); muserpasswd = (edittext)findviewbyid(r.id.userpasswd); cbx_cmwap = (checkbox) findviewbyid(r.id.cbx_cmwap); loginbutton = (button) findviewbyid(r.id.login_button); exitbutton = (button) findviewbyid(r.id.exit_button); loginbtnlistener = new view.onclicklistener() { public void onclick(view view) { loginwindow.iscmwap = cbx_cmwap.ischecked(); if (view == loginbutton) { launchfetion(); } else if(view == exitbutton) { finish(); } } }; loginbutton.setonclicklistener(loginbtnlistener); exitbutton.setonclicklistener(loginbtnlistener); } private void launchfetion() { intent i = new intent(this, funcselector.class); i.putextra(key_login_name, musername.gettext().tostring()); i.putextra(key_login_passwd, muserpasswd.gettext().tostring()); i.putextra(key_login_type, cbx_cmwap.ischecked()); startactivity(i); } @override public boolean onkeydown(int keycode, keyevent msg) { // system.out.println("enter onkeydown() in loginwindow!"); // // if (null != loginbtnlistener) { // view aview = getcurrentfocus(); // loginbtnlistener.onclick(aview); // } return false; } private button loginbutton, exitbutton; private edittext musername; private edittext muserpasswd; private checkbox cbx_cmwap; private onclicklistener loginbtnlistener; public static final string key_login_name = "login_name"; public static final string key_login_passwd = "login_passwd"; public static final string key_login_type = "login_type"; public static boolean iscmwap = false; }
2. funcselector.java -- 功能模块选择窗口
package com.hemi.rhet; import java.util.arraylist; import java.util.hashmap; import com.hemi.rhet.r; import android.app.activity; import android.content.intent; import android.os.bundle; import android.util.log; import android.view.menu; import android.view.menuitem; import android.view.view; import android.widget.adapterview; import android.widget.gridview; import android.widget.simpleadapter; import android.widget.adapterview.onitemclicklistener; public class funcselector extends activity { @override public void oncreate(bundle savedinstancestate) { log.i("info", "enter loginwindow.oncreate()!"); super.oncreate(savedinstancestate); setcontentview(r.layout.func_selector); initfuncgrids(); } private void initfuncgrids() { gridview funcseleview = (gridview) findviewbyid(r.id.func_selector); // 生成动态数组,并且转入数据 arraylist<hashmap<string, object>> lstimageitem = new arraylist<hashmap<string, object>>(); hashmap<string, object> map = new hashmap<string, object>(); map.put("itemimage", r.drawable.photo_upload); // 添加图像资源的id map.put("itemtext", getstring(r.string.photo_upload)); // 按序号做itemtext lstimageitem.add(map); map = new hashmap<string, object>(); map.put("itemimage", r.drawable.icon); map.put("itemtext", getstring(r.string.sys_config)); lstimageitem.add(map); for (int i = 1; i <= 10; i++) { map = new hashmap<string, object>(); map.put("itemimage", r.drawable.icon); // 添加图像资源的id map.put("itemtext", "no." + string.valueof(i)); // 按序号做itemtext lstimageitem.add(map); } // 生成适配器的imageitem <====> 动态数组的元素,两者一一对应 simpleadapter saimageitems = new simpleadapter(this, // 没什么解释 lstimageitem,// 数据来源 r.layout.night_item,// night_item的xml实现 // 动态数组与imageitem对应的子项 new string[] { "itemimage", "itemtext" }, // imageitem的xml文件里面的一个imageview,两个textview id new int[] {r.id.itemimage,r.id.itemtext}); //null); // 添加并且显示 funcseleview.setadapter(saimageitems); //saimageitems.notifydatasetchanged(); // 添加消息处理 funcseleview.setonitemclicklistener(new itemclicklistener()); } public boolean oncreateoptionsmenu(menu menu) { super.oncreateoptionsmenu(menu); menu.add(0, exit_id,0, r.string.back_button); return true; } //@override public boolean onmenuitemselected(int featureid, menuitem item) { boolean result = true; switch(item.getitemid()) { case exit_id: this.finish(); break; default: result = super.onmenuitemselected(featureid, item); break; } return result; } // 当adapterview被单击(触摸屏或者键盘),则返回的item单击事件 class itemclicklistener implements onitemclicklistener { public void onitemclick(adapterview<?> arg0,// the adapterview where the // click happened view arg1,// the view within the adapterview that was clicked int arg2,// the position of the view in the adapter long arg3// the row id of the item that was clicked ) { // 在本例中arg2=arg3 hashmap<string, object> item = (hashmap<string, object>) arg0 .getitematposition(arg2); string tmpstr = (string) item.get("itemtext"); //item.put("itemtext", tmpstr + tmpstr.substring(tmpstr.length() - 1)); // 显示所选item的itemtext // settitle((string)item.get("itemtext")); log.i("info", (string) item.get("itemtext")); ((simpleadapter) arg0.getadapter()).notifydatasetchanged(); intent i; switch (arg2) { case 0: i = new intent(); i.setclass(funcselector.this, photoupload.class); startactivity(i); break; case 1: i = new intent(); i.setclass(funcselector.this, configwindow.class); startactivity(i); break; default: break; } } } private static final int take_photo_id = menu.first; private static final int upload_photo_id = menu.first + 1; private static final int exit_id = menu.first + 3; }//funcselector
3. photoupload.java -- 照片上传模块
package com.hemi.rhet; import java.io.bufferedreader; import java.io.bytearrayoutputstream; import java.io.dataoutputstream; import java.io.file; import java.io.fileinputstream; import java.io.filenotfoundexception; import java.io.fileoutputstream; import java.io.ioexception; import java.io.inputstreamreader; import java.io.outputstream; import java.io.unsupportedencodingexception; import java.net.httpurlconnection; import java.net.malformedurlexception; import java.net.url; import java.text.simpledateformat; import java.util.arraylist; import java.util.date; import java.util.hashmap; import java.util.list; import org.apache.http.header; import org.apache.http.httpresponse; import org.apache.http.namevaluepair; 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.fileentity; import org.apache.http.impl.client.defaulthttpclient; import org.apache.http.message.basicnamevaluepair; import com.hemi.rhet.r; import android.app.activity; import android.content.intent; import android.graphics.bitmap; import android.net.uri; import android.os.bundle; import android.os.environment; import android.util.log; import android.view.menu; import android.view.menuitem; import android.view.view; import android.widget.adapterview; import android.widget.gridview; import android.widget.imageview; import android.widget.simpleadapter; import android.widget.toast; import android.widget.adapterview.onitemclicklistener; public class photoupload extends activity { @override public void oncreate(bundle savedinstancestate) { log.i("info", "enter loginwindow.oncreate()!"); super.oncreate(savedinstancestate); setcontentview(r.layout.func_selector); } @override protected void onactivityresult(int requestcode, int resultcode, intent data) { super.onactivityresult(requestcode, resultcode, data); if (take_photo_id == requestcode) { if (resultcode != result_ok) return; bundle extras = data.getextras(); try { bitmap photocaptured = (bitmap) extras.get("data"); imageview img = new imageview(this); img.setimagebitmap(photocaptured); setcontentview(img); //store to sd card bytearrayoutputstream baos = new bytearrayoutputstream(); photocaptured.compress(bitmap.compressformat.jpeg, 100, baos); byte[] photobytes = baos.tobytearray(); file afile = new file(getdatedfname(sd_card_temp_dir)); photopath = afile.getabsolutepath(); boolean b; if (afile.exists()) b = afile.delete(); //f.mkdirs(); afile.createnewfile(); //need add permission to manifest fileoutputstream fos = new fileoutputstream(afile); fos.write(photobytes); fos.close(); log.d("info", "onpicturetaken - wrote bytes: " + photobytes.length); uri capturedimage = uri .parse(android.provider.mediastore.images.media .insertimage(getcontentresolver(), afile .getabsolutepath(), null, null)); log.i("camera", "selected image: " + capturedimage.tostring()); } catch (filenotfoundexception e) { e.printstacktrace(); } catch (ioexception e) { e.printstacktrace(); } } else if (upload_photo_id == requestcode) { } } public boolean oncreateoptionsmenu(menu menu) { super.oncreateoptionsmenu(menu); menu.add(0, take_photo_id,0, r.string.take_photo); menu.add(0, upload_photo_id,0, r.string.upload_photo); menu.add(0, back_id,0, r.string.back_button); return true; } //@override public boolean onmenuitemselected(int featureid, menuitem item) { boolean result = true; switch(item.getitemid()) { case take_photo_id: log.i("info", "ready to take photos!"); intent i = new intent("android.media.action.image_capture"); startactivityforresult(i, take_photo_id); result = true; break; case upload_photo_id: uploadfile2svr(); break; case back_id: this.finish(); break; default: result = super.onmenuitemselected(featureid, item); break; } return result; } public void uploadfile2svr() { httpclient httpclient = new defaulthttpclient(); string urlstr = new stringbuffer().append(http_protocol) .append(/*server_ip*/configwindow.getserverip()) .append(':') .append(/*server_port*/configwindow.getserverport()) .append(file_uploader_url) .tostring(); httppost httppost = new httppost(urlstr); string uploadmsg = "上传 照片失败!"; try { list<namevaluepair> namevaluepairs = new arraylist<namevaluepair>(); // your data namevaluepairs.add(new basicnamevaluepair("filename", ("image.jpg")) ); // namevaluepairs.add(new basicnamevaluepair("orderno", "1")); // namevaluepairs.add(new basicnamevaluepair("userid", "123")); // namevaluepairs.add(new basicnamevaluepair("attach_type", "1")); // httppost.setentity(new urlencodedformentity(namevaluepairs)); file afile = new file(photopath); log.i("info -- photopath: ", photopath); fileentity fileety = new fileentity(afile, "binary/octet-stream"); httppost.setentity(fileety); httppost.addheader("filename", /*("image.jpg")*/afile.getname()); httpresponse response; response = httpclient.execute(httppost); //log.i("info -- response: ", response.getstatusline().getreasonphrase()); header[] headers = response.getallheaders(); headers = response.getheaders("resultcode"); if (headers[0].getvalue().equals("0")) { uploadmsg = "上传照片成功!"; } } catch (unsupportedencodingexception e) { //e.printstacktrace(); uploadmsg += e.tostring(); log.e("exception", e.tostring()); } catch (clientprotocolexception e) { //e.printstacktrace(); uploadmsg += e.tostring(); log.e("exception", e.tostring()); } catch (ioexception e) { //e.printstacktrace(); uploadmsg += e.tostring(); log.e("exception", e.tostring()); } finally { toast.maketext(photoupload.this, uploadmsg, toast.length_long).show(); httpclient.getconnectionmanager().shutdown(); } } public void uploadfile2svr2() { bufferedreader in = null; httpclient httpclient = new defaulthttpclient(); string urlstr = new stringbuffer().append(http_protocol) .append(configwindow.getserverip()) .append(configwindow.getserverport()) .append(file_uploader_url) .tostring(); url url = null; try { url = new url(urlstr); } catch (malformedurlexception e1) { e1.printstacktrace(); } httpurlconnection conn = null; dataoutputstream dos = null; string lineend = "/r/n"; string twohyphens = "--"; string boundary = "*****"; int maxbuffersize = 16 * 1024; try { // list<namevaluepair> namevaluepairs = new arraylist<namevaluepair>(); // // your data // namevaluepairs.add(new basicnamevaluepair("filename", getdatedfname("image.jpg")) ); // namevaluepairs.add(new basicnamevaluepair("orderno", "1")); // namevaluepairs.add(new basicnamevaluepair("userid", "123")); // namevaluepairs.add(new basicnamevaluepair("attach_type", "1")); //httppost.setentity(new urlencodedformentity(namevaluepairs)); // open a http connection to the url conn = (httpurlconnection) url.openconnection(); conn.setconnecttimeout(120000); // allow inputs conn.setdoinput(true); // allow outputs conn.setdooutput(true); // don't use a cached copy. conn.setusecaches(false); // use a post method. conn.setrequestmethod("post"); conn.setrequestproperty("connection", "keep-alive"); conn.setrequestproperty("content-type", //"multipart/form-data;boundary=" + boundary); "application/x-www-form-urlencoded"); conn.setrequestproperty("user-agent", "mozilla/5.0 (windows; u; windows nt 5.2; zh-cn; rv:1.9.1.6) gecko/20091201 firefox/3.5.6 gtb6"); //conn.setrequestproperty("accept-language", "zh-cn,zh;q=0.5"); //conn.setrequestproperty("content-type", "multipart/form-data;boundary="+ boundary); conn.connect(); //outputstream connos = conn.getoutputstream(); dos = new dataoutputstream(conn.getoutputstream()); dos.writebytes(twohyphens + boundary + lineend); dos.writebytes("content-disposition: form-data; name=/"uploadedfile/";filename=/"" + "exsistingfilename" + "/"" + lineend); //dos.writebytes(lineend); log.i("info", "headers are written"); // upload file to webserver via http fileinputstream fileinputstream = new fileinputstream(photopath); // create a buffer of maximum size int bytesavailable = fileinputstream.available(); int buffersize = math.min(bytesavailable, maxbuffersize); byte[] buffer = new byte[buffersize]; // read file and write it into form... int bytesread = fileinputstream.read(buffer, 0, buffersize); while (bytesread > 0) { dos.write(buffer, 0, buffersize); bytesavailable = fileinputstream.available(); buffersize = math.min(bytesavailable, maxbuffersize); bytesread = fileinputstream.read(buffer, 0, buffersize); } // send multipart form data necesssary after file data... dos.writebytes(lineend); dos.writebytes(twohyphens + boundary + twohyphens + lineend); // close streams log.e("info", "file is written"); fileinputstream.close(); dos.flush(); dos.close(); dos = null; // response // httpresponse response; // response = httpclient.execute(httppost); // response = httpclient.execute(conn.get); in = new bufferedreader( new inputstreamreader(conn.getinputstream())); stringbuffer sb = new stringbuffer(""); string line = ""; string nl = system.getproperty("line.separator"); while ((line = in.readline()) != null) { sb.append(line + nl); } in.close(); string result = sb.tostring(); log.i("info", result); } catch (clientprotocolexception e) { e.printstacktrace(); } catch (ioexception e) { e.printstacktrace(); } finally{ if(in != null){ try{ in.close(); }catch(ioexception ioe){ log.e("error", ioe.tostring()); } } } } public static string getdatedfname(string fname) { stringbuffer result = new stringbuffer(); simpledateformat df = new simpledateformat("yymmddhhmmss"); string datesfx = "_" + df.format(new date()); int idx = fname.lastindexof('.'); if (idx != -1) { result.append(fname.substring(0, idx)); result.append(datesfx); result.append(fname.substring(idx)); } else { result.append(fname); result.append(datesfx); } return result.tostring(); } //============================================= //private bitmap photocaptured; private string photopath = "/sdcard/image_100225083437.jpg"; //"/sdcard/1.txt"; private static final int take_photo_id = menu.first; private static final int upload_photo_id = menu.first + 1; private static final int back_id = menu.first + 3; private static final string http_protocol = "http://"; private static final string file_uploader_url = "/fileuploader/system/fileupload"; private string sd_card_temp_dir = environment.getexternalstoragedirectory() + file.separator + "img.jpg"; }
4. configwindow.java--系统配置窗口
package com.hemi.rhet; import com.hemi.rhet.r; import android.app.activity; import android.content.intent; import android.os.bundle; import android.util.log; import android.view.keyevent; import android.view.view; import android.view.view.onclicklistener; import android.widget.button; import android.widget.checkbox; import android.widget.edittext; public class configwindow extends activity { @override public void oncreate(bundle savedinstancestate) { system.out.println("enter configwindow.oncreate()!"); super.oncreate(savedinstancestate); setcontentview(r.layout.config_window); mserverip = (edittext)findviewbyid(r.id.serverip); mserverport = (edittext)findviewbyid(r.id.serverport); //hemerr mserverip.settext(serverip); mserverport.settext(serverport); okbutton = (button) findviewbyid(r.id.ok_button); backbutton = (button) findviewbyid(r.id.back_button); loginbtnlistener = new view.onclicklistener() { public void onclick(view view) { if (view == okbutton) { serverip = mserverip.gettext().tostring(); serverport = mserverport.gettext().tostring(); log.i("info", "ip is: "+serverip+"/tport is: "+serverport); finish(); } else if(view == backbutton) { finish(); } } }; okbutton.setonclicklistener(loginbtnlistener); backbutton.setonclicklistener(loginbtnlistener); } private void launchfetion() { intent i = new intent(this, funcselector.class); i.putextra(key_login_name, mserverip.gettext().tostring()); i.putextra(key_login_passwd, mserverport.gettext().tostring()); startactivity(i); } @override public boolean onkeydown(int keycode, keyevent msg) { // system.out.println("enter onkeydown() in loginwindow!"); // // if (null != loginbtnlistener) { // view aview = getcurrentfocus(); // loginbtnlistener.onclick(aview); // } return false; } public static string getserverip() { return serverip; } public static string getserverport() { return serverport; } private button okbutton, backbutton; private edittext mserverip; private edittext mserverport; private onclicklistener loginbtnlistener; public static final string key_login_name = "login_name"; public static final string key_login_passwd = "login_passwd"; public static final string key_login_type = "login_type"; public static string serverip = "192.168.0.98"; //; public static string serverport = "8081"; }
还需要增加bg_logo.jpg、icon.png、photo_upload.png等几个图片。
android拍照上传程序的xml配置文件
1. login_window.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/bg_logo" > <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:text="@string/user_name" /> <edittext android:id="@+id/username" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:scrollhorizontally="true" android:autotext="false" android:text="user" android:capitalize="none" android:gravity="fill_horizontal" android:textappearance="?android:attr/textappearancemedium" /> <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:text="@string/user_passwd" /> <edittext android:id="@+id/userpasswd" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:scrollhorizontally="true" android:autotext="false" android:text="user" android:capitalize="none" android:gravity="fill_horizontal" android:password="true" android:textappearance="?android:attr/textappearancemedium" /> <checkbox android:id="@+id/cbx_cmwap" android:text="cmwap" android:checked="false" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <relativelayout android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content"> <button android:id="@+id/login_button" android:text="login" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:layout_alignparentright="true" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <button android:id="@+id/exit_button" android:text="exit" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:layout_toleftof="@id/login_button" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </relativelayout> </linearlayout>
2. func_selector.xml
<?xml version="1.0" encoding="utf-8"?> <gridview xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/func_selector" android:layout_width="fill_parent" android:layout_height="fill_parent" android:numcolumns="auto_fit" android:verticalspacing="10dp" android:horizontalspacing="10dp" android:columnwidth="90dp" android:stretchmode="columnwidth" android:gravity="center" android:background="@drawable/bg_logo" />
3. night_item.xml
<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="wrap_content" android:paddingbottom="4dip" android:layout_width="fill_parent"> <imageview android:layout_height="wrap_content" android:id="@+id/itemimage" android:layout_width="wrap_content" android:layout_centerhorizontal="true"> </imageview> <textview android:layout_width="wrap_content" android:layout_below="@+id/itemimage" android:layout_height="wrap_content" android:text="textview01" android:layout_centerhorizontal="true" android:id="@+id/itemtext"> </textview> </relativelayout>
4. config_window.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:text="@string/server_ip" /> <edittext android:id="@+id/serverip" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:scrollhorizontally="true" android:autotext="false" android:capitalize="none" android:gravity="fill_horizontal" android:textappearance="?android:attr/textappearancemedium" /> <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:text="@string/server_port" /> <edittext android:id="@+id/serverport" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:scrollhorizontally="true" android:autotext="false" android:capitalize="none" android:gravity="fill_horizontal" android:textappearance="?android:attr/textappearancemedium" /> <relativelayout android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content"> <button android:id="@+id/ok_button" android:text="@string/ok_button" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:layout_alignparentright="true" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <button android:id="@+id/back_button" android:text="@string/back_button" android:layout_marginleft="20dip" android:layout_marginright="20dip" android:layout_toleftof="@id/ok_button" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </relativelayout> </linearlayout>
5. androidmanifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.hemi.rhet" android:versioncode="1" android:versionname="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:label="@string/app_name" android:name="loginwindow"> <intent-filter> <action android:name="android.intent.action.main" /> <category android:name="android.intent.category.launcher" /> </intent-filter> </activity> <activity android:name="funcselector"></activity> <activity android:name="photoupload"></activity> <activity android:name="configwindow"></activity> </application> <uses-sdk android:minsdkversion="5"/> <uses-permission android:name="android.permission.internet" /> <uses-permission android:name="android.permission.write_external_storage"></uses-permission> </manifest>
android拍照上传程序的servlet程序样例
uploadfileservlet.java:
package com.hemi.rhet.servlet; import java.io.*; import java.net.inetaddress; import java.net.unknownhostexception; import java.sql.sqlexception; import java.text.simpledateformat; import java.util.*; import javax.servlet.*; import javax.servlet.http.*; //import org.apache.commons.fileupload.*; //import org.apache.commons.fileupload.disk.diskfileitemfactory; //import org.apache.commons.fileupload.servlet.servletfileupload; //import org.apache.commons.lang.time.dateutils; import org.apache.log4j.logger; //import org.apache.struts2.servletactioncontext; public class uploadfileservlet extends httpservlet { private static logger log = logger.getlogger(uploadfileservlet.class); private static final string oblique_line = "/"; private static final string opposite_oblique_line = "////"; private static final string webposition = "webapps"; private static final string sbpath = "uploadedfiles/"; file outdir = null; file outfile = null; fileoutputstream fos = null; bufferedinputstream bis = null; byte[] bs = new byte[1024]; string uploadfname = null; string orderno = null; string userid = null; string attachtype = "2"; public void init() throws servletexception { // if (log.isdebugenabled()) // { // log.debug("进入init()方法!!"); // } } public void doget(httpservletrequest request , httpservletresponse response) throws ioexception, servletexception { dopost(request, response); } public void dopost(httpservletrequest request , httpservletresponse response) throws ioexception, servletexception { string root = this.getservletcontext().getrealpath("/"); root = root.replaceall("////", "/"); try { stringbuffer destfname = new stringbuffer(); destfname.append(getrealdir(root)).append(sbpath); outdir = new file(destfname.tostring()); request.setcharacterencoding("utf-8"); uploadfname = request.getparameter("filename"); //name of uploaded file uploadfname = request.getheader("filename"); if (isempty(uploadfname)) uploadfname = "filename.jpg"; //orderno = request.getparameter("orderno"); //id of the order or work sheet //userid = request.getparameter("userid"); //id of the user who upload the file //attachtype = request.getparameter("attach_type"); //type of attachment, refer to file.filebean's definition string desc = request.getparameter("desc"); //description of uploaded file if (desc==null) desc = ""; if (true) { destfname.append(getdatedfname(uploadfname)); outfile = new file(destfname.tostring()); bis = new bufferedinputstream(request.getinputstream()); uploadfile(); //response.getwriter().write("0"); //success response.setheader("resultcode", "0"); } else if (desc.length() > 400/2) { //response.getwriter().write("3"); //illegal description response.setheader("resultcode", "3"); } else { if (log.isdebugenabled()) { log.debug("调用格式错误!"); } response.senderror(100, "参数错误!"); //response.getwriter().write("1"); response.setheader("resultcode", "1"); //parameter error //return; } } catch (sqlexception e) { if (log.isdebugenabled()) { log.debug(e); } //response.getwriter().write("6"); //failure of insert to database response.setheader("resultcode", "6"); } catch (exception e) { if (log.isdebugenabled()) { log.debug(e); } //response.getwriter().write("7"); //failure response.setheader("resultcode", "7"); } finally { if (null != bis) bis.close(); if (null != fos) fos.close(); } } private void uploadfile() throws ioexception { if (log.isdebugenabled()) { log.debug("outdir:" + outdir.getpath()); log.debug("outfile:" + outfile.getpath()); } if (!outdir.exists()) outdir.mkdir(); if (!outfile.exists()) outfile.createnewfile(); fos = new fileoutputstream(outfile); int i; while ((i = bis.read(bs)) != -1) { fos.write(bs, 0, i); } } public static string getdatedfname(string fname) { stringbuffer result = new stringbuffer(); simpledateformat df = new simpledateformat("yymmddhhmmss"); string datesfx = "_" + df.format(new date()); int idx = fname.lastindexof('.'); if (idx != -1) { result.append(fname.substring(0, idx)); result.append(datesfx); result.append(fname.substring(idx)); } else { result.append(fname); result.append(datesfx); } return result.tostring(); } public static string geturlfname(string fname, httpservletrequest request) { string result = ""; if (isempty(fname)) return result; try { if (fname.startswith("http://")) { result = fname; } else { //httpservletrequest request = servletactioncontext.getservletcontext().getrgetrequest(); //userandorganandrole user = (userandorganandrole)request.getsession().getattribute("user"); string ip = request.getservername(); int port = request.getserverport(); result = fname.substring(fname.indexof(uploadfileservlet.sbpath)); stringbuffer tmpbuff = new stringbuffer(); tmpbuff.append("http://").append(ip).append(":").append(port).append(oblique_line).append(result); //sample: http://localhost:8083/uploadedfiles/image_067_100222102521.jpg result = tmpbuff.tostring(); } } catch (exception ex) { ex.printstacktrace(); } system.out.println("result is: "+result); return result; } public static boolean isempty(string str) { return ((str == null) || (str.length() == 0)); } /** * method getrealdir search webapps position * * @param despath * * @return * */ private string getrealdir(string newfilenameroot) throws exception { if (newfilenameroot == null) throw new exception("get real dir failed !"); int dp = newfilenameroot .lastindexof(oblique_line); if (dp == -1) throw new exception("invalid path !"); int dpbefore = newfilenameroot.lastindexof( oblique_line, dp - 1); if (dpbefore == -1) throw new exception("invalid path !"); string needsubstr = newfilenameroot.substring(dpbefore + 1, dp); string nextstr = newfilenameroot.substring(0, dpbefore + 1); if (!needsubstr.trim().equals(webposition)) { return getrealdir(nextstr); } else return newfilenameroot; } public static void main(string[] args) { } }
web.xml:
<?xml version="1.0" encoding="utf-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>upload</servlet-name> <servlet-class>com.hemi.rhet.servlet.uploadfileservlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>upload</servlet-name> <url-pattern>/system/fileupload</url-pattern> </servlet-mapping> </web-app>
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