09 - get请求、post请求、httpclient、文件上传

来源：互联网发布：凌游网络编辑：程序博客网时间：2024/05/29 03:27

activity类

public class NewsmanagerActivity extends Activity {private EditText titleText;private EditText timelengthText;private EditText filenameText;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);titleText = (EditText) this.findViewById(R.id.title);timelengthText = (EditText) this.findViewById(R.id.timelength);filenameText = (EditText) this.findViewById(R.id.filename);}public void save(View v) {StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().build());StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder().detectLeakedSqlLiteObjects().detectLeakedClosableObjects().penaltyLog().penaltyDeath().build());String title = titleText.getText().toString();String timelength = timelengthText.getText().toString();String filename = filenameText.getText().toString();// 判断是否有内存卡if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)|| Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED_READ_ONLY)) {File uploadFile = new File(Environment.getExternalStorageDirectory(),filename);if(uploadFile.exists()){boolean result = NewsService.save(title, timelength,uploadFile);if(result){Toast.makeText(getApplicationContext(), "上传成功!", 1).show();}else{Toast.makeText(getApplicationContext(), "上传失败!", 1).show();}}else{Toast.makeText(getApplicationContext(), "文件不存在!", 1).show();}}else{boolean result = NewsService.save(title, timelength);if (result) {Toast.makeText(getApplicationContext(), "保存成功!", 1).show();} else {Toast.makeText(getApplicationContext(), "保存失败!", 1).show();}}}}

service类

public class NewsService {public static boolean save(String title, String timelength) {// 数据大于2k用post//String path = "http://192.168.0.103:8080/hotelpro/outLoginExteriorGet.do";String path = "http://192.168.0.103:8080/hotelpro/outLoginExterior.do";Map<String, String> map = new HashMap<String, String>();map.put("userName", title);map.put("password", timelength);try {//return sendGetRequest(path, map, "UTF-8"); //get请求//return sendPostRequest(path, map, "UTF-8");//post请求return sendHttpClientPostRequest(path, map, "UTF-8");//post请求} catch (Exception e) {e.printStackTrace();return false;}}//通过httpclient发出请求private static boolean sendHttpClientPostRequest(String path,Map<String, String> map, String encoding) throws Exception {List<NameValuePair> pairs = new ArrayList<NameValuePair>();if (map != null && !map.isEmpty()) {for (Map.Entry<String, String> entry : map.entrySet()) {pairs.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));} }UrlEncodedFormEntity entity = new UrlEncodedFormEntity(pairs,encoding);HttpPost httpPost = new HttpPost(path);httpPost.setEntity(entity);DefaultHttpClient client = new DefaultHttpClient();HttpResponse response = client.execute(httpPost); return response.getStatusLine().getStatusCode()==200;}// Get请求private static boolean sendGetRequest(String path, Map<String, String> map,String encoding) throws Exception {StringBuilder url = new StringBuilder(path);url.append("?");for (Map.Entry<String, String> entry : map.entrySet()) {url.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), encoding)).append("&");}url.deleteCharAt(url.length() - 1);HttpURLConnection conn = (HttpURLConnection) new URL(url.toString()).openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(5000);if (conn.getResponseCode() == 200) {return true;}return false;}// POST请求private static boolean sendPostRequest(String path,Map<String, String> map, String encoding) throws Exception { StringBuilder data = new StringBuilder("");if (map != null && !map.isEmpty()) {for (Map.Entry<String, String> entry : map.entrySet()) {data.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), encoding)).append("&");}data.deleteCharAt(data.length() - 1);}byte[] params = data.toString().getBytes();URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setConnectTimeout(3000);// 这是请求方式为POSTconn.setRequestMethod("POST");// 设置post请求必要的请求头conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");// 请求头, 必须设置conn.setRequestProperty("Content-Length", params.length + "");// 注意是字节长度,// 不是字符长度 conn.setDoOutput(true);// 准备写出conn.getOutputStream().write(params);// 写出数据return conn.getResponseCode() == 200;}public static boolean save(String title, String timelength, File uploadFile) {String path = "http://192.168.0.103:8080/hotelpro/upload.do";Map<String, String> map = new HashMap<String, String>();map.put("title", title);map.put("timelength", timelength);FormFile file = new FormFile(title, uploadFile, "myfiles", "image/jpeg");//类型可以在tomcat下conf下的web.xml最后找到对应try {return SocketHttpRequester.post(path, map, file);} catch (Exception e) {e.printStackTrace();return false;} }}

工具类

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 filename;    /* 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.filename = filname;        this.parameterName = parameterName;        if(contentType!=null) this.contentType = contentType;    }        public FormFile(String filname, File file, String parameterName, String contentType) {        this.filename = 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 getFilename() {        return filename;    }    public void setFilename(String filname) {        this.filename = 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;    }    }

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.getFilename() + "\"\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);                   OutputStream outStream = socket.getOutputStream();//httpclient有缓存容易死机        //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.getFilename() + "\"\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://www.itcast.cn或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});    }}

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