Android平台向web应用提交信息

GET方式

实验：提交视频名称、时长信息

url：

http://192.168.1.102:8080/videoweb/video/manage.do?method=save&name=xxx&timelength=90

资源

<string name="app_name">VideoClient</string> <string name="name">视频名称</string> <string name="timeLength">时长</string> <string name="save">保存</string> <string name="success">数据保存成功</string> <string name="fail">数据保存失败</string> <string name="error">网络连接失败</string> <string name="videoFile">视频文件</string>

布局

<TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/name" /> <EditText android:id="@+id/nameEt" android:layout_width="match_parent" android:layout_height="wrap_content" > <requestFocus /> </EditText> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/timeLength" /> <EditText android:id="@+id/timeLengthEt" android:layout_width="match_parent" android:layout_height="wrap_content" > </EditText> <Button android:id="@+id/saveBtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="save" />

VideoService

public static boolean save(String name, String timeLength) throws Exception { String path = "http://192.168.1.102:8080/videoweb/video/manage.do"; Map<String, String> params = new HashMap<String, String>(); params.put("name", name); params.put("timelength", timeLength); params.put("method", "save"); return sendPostRequestHttpClient(path, params, "UTF-8"); } private static boolean sendPostRequestHttpClient(String path, Map<String, String> params, String string) throws Exception { // http://192.168.1.102:8080/videoweb/video/manage.do?method=save&name=xxx&timelength=90 StringBuilder pathBuilder = new StringBuilder(path); pathBuilder.append("?"); for (Map.Entry<String, String> entry : params.entrySet()) { pathBuilder.append(entry.getKey()).append("=") .append(entry.getValue()).append("&"); } pathBuilder.deleteCharAt(pathBuilder.length() - 1); URL url = new URL(pathBuilder.toString()); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setConnectTimeout(5000); if (conn.getResponseCode() == 200) { return true; } return false; }

测试方法代码

VideoServiceTest

public void testSave() throws Throwable{ VideoService.save("Sucan", "80"); }

中文字符解决方案：

服务器端代码：

VideoForm formbean = (VideoForm)form; if("GET".equals(request.getMethod())){ String name = new String(request.getParameter("name") .getBytes("ISO8859-1"),"UTF-8"); System.out.println("视频名称: "+ name); System.out.println("时长: "+formbean.getTimelength()); }else{ System.out.println("视频名称: "+formbean.getName()); System.out.println("时长: "+formbean.getTimelength()); }

客户端的VideoService中

for (Map.Entry<String, String> entry : params.entrySet()) { pathBuilder.append(entry.getKey()).append("=") // .append(entry.getValue()).append("&"); //url编码，解决中文乱码 .append(URLEncoder.encode(entry.getValue())); }

POST方式

修改服务器端代码

Index.jsp

<form action="http://192.168.1.102:8080/videoweb/video/manage.do" method="post" > <input type="hidden" name="method" value="save"><br/> 视频名称：<input type="text" name="name" value=""><br/> 时长：<input type="text" name="timelength" value=""><br/> <input type="submit" value="提交"> </form>

编写业务类方法（VideoService）

private static boolean sendPostRequestHttpClient(String path, Map<String, String> params, String encoding) throws Exception { /* * Content-Type: application/x-www-form-urlencoded * Content-Length: 34 * method=save&name=xxxx&timelength=2 */ StringBuffer sb = new StringBuffer(""); if (params != null && !params.isEmpty()) { for (Map.Entry<String, String> entry : params.entrySet()) { sb.append(entry.getKey()).append("=") // .append(entry.getValue()).append("&"); .append(URLEncoder.encode(entry.getValue(), encoding)).append('&'); // url编码，解决中文乱码 } sb.deleteCharAt(sb.length() - 1); } byte[] data = sb.toString().getBytes(); //得到实体数据 eg. method=save&name=xxxx&timelength=2 URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setConnectTimeout(5000); conn.setDoOutput(true); //允许通过POST方式提交数据，必须允许输出 conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); conn.setRequestProperty("Content-Length", String.valueOf(data.length)); OutputStream outStream = conn.getOutputStream(); outStream.write(data); outStream.flush(); outStream.close(); if (conn.getResponseCode() == 200) { return true; } return false; }

修改save方法

// return sendGetRequestHttpClient(path, params, "UTF-8"); return sendPostRequest(path, params, "UTF-8");