新浪微博（十）SyncHttp类

学习Html的朋友应该知道Get和Post两种方式提交数据，在这里我们同样也需要编写Post和Get两个方法模拟Post和Get请求。在发送微博时我们还可以上传照片，所以我们还应编写一个方法用于上传图片，但是在这里暂时还不编写上传数据的方法。另外在模拟Http请求时我们需要传递参数，因此我们需创建一个Parameter类，表示参数对象。

package tianyi.helper;import java.io.ByteArrayOutputStream;import java.io.DataOutputStream;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import java.util.List;public class SyncHttp{/** * 这是进行第一次授权验证的第一步，这一步真正的连接网络访问服务器验证RequestToken的URL * 通过GET方式发送请求 * 请求后将会返回串oauth_token=字符串&oauth_token_secret=字符串&oauth_callback_confirmed=trued * @param url URL地址 * @param params 参数 * @return  * @throws Exception */private static final int TIME_OUT = 1000 * 6; // 超时private static final String METHOD_POST = "POST";private static final String METHOD_GET = "GET";private static final int HTTP_OK = 200;private final String CHARTSET = "UTF-8"; //字符编码private final int BUFFER = 1024 * 8;//缓冲区public String httpGet(String urlStr, String paramsStr) throws Exception{//构造请求的URLStringBuilder urlBuilder = new StringBuilder();urlBuilder.append(urlStr);if (!TextUtil.isEmpty(paramsStr)){urlBuilder.append("?");urlBuilder.append(paramsStr);}//Log.i(Constants.TAG, urlBuilder.toString());URL url = null;HttpURLConnection conn = null;InputStream inStream = null;String response = null;try{url = new URL(urlBuilder.toString());System.out.println("");//根据URL打开远程连接conn = (HttpURLConnection) url.openConnection();//设置参数conn.setDoInput(true);conn.setConnectTimeout(TIME_OUT);conn.setRequestMethod(METHOD_GET);conn.setRequestProperty("accept", "*/*");//建立连接conn.connect();//接受返回码int responseCode = conn.getResponseCode();if (responseCode == HTTP_OK){//获取输入流inStream = conn.getInputStream();//从输入流中获取信息response = getResponse(inStream);}else{//请求失败response = "返回码："+responseCode;}} catch (Exception e){throw e;}finally{//关闭连接conn.disconnect();}return response;}/** * 通过POST方式发送请求 * @param url URL地址 * @param params 参数 * @return * @throws Exception */public String httpPost(String urlStr, String paramsStr) throws Exception{//把参数转换成字符数组byte[] data = paramsStr.getBytes();URL url = null;HttpURLConnection conn = null;InputStream inStream = null;String response = null;try{url = new URL(urlStr);//根据URL打开远程连接conn = (HttpURLConnection) url.openConnection();//设置参数conn.setConnectTimeout(TIME_OUT);conn.setDoOutput(true);conn.setDoInput(true);conn.setUseCaches(false);conn.setRequestMethod(METHOD_POST);conn.setRequestProperty("Connection", "Keep-Alive");conn.setRequestProperty("Charset", CHARTSET);conn.setRequestProperty("Content-Length", String.valueOf(data.length));conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");//建立连接conn.connect();DataOutputStream outputStream = new DataOutputStream(conn.getOutputStream());//把字节数组写到流中outputStream.write(data);//发送数据outputStream.flush();outputStream.close();//获取返回码int responseCode = conn.getResponseCode();if (responseCode == HTTP_OK){//获取输入流inStream = conn.getInputStream();//从输入流中获取信息response = getResponse(inStream);}else{//请求失败response = responseCode+"";}} catch (Exception e){throw e;}finally{//关闭连接conn.disconnect();}return response;}/** * 获取输入流中信息 * @param inStream 输入流 * @return * @throws IOException */private String getResponse(InputStream inStream) throws IOException{ByteArrayOutputStream outputStream = new ByteArrayOutputStream();int len = -1;byte[] buffer = new byte[BUFFER];//缓冲区while((len=inStream.read(buffer))!=-1){outputStream.write(buffer, 0, len);}byte[] data = outputStream.toByteArray();return new String(data);}/** * 模拟可发送文件的POST方式请求 * @param httpUrl请求URL地址 * @param queryString请求参数 * @param files传送文件集合 * @return * @throws Exception */public String postWithFile(String httpUrl, String queryString, List<Parameter> files) throws Exception{//数据分隔线final String BOUNDARY = "---------------------------7da2137580612"; //回车final String RETURN = "\r\n"; //前缀final String PREFIX = "--";HttpURLConnection conn = null;InputStream inStream = null;String response = null;try{URL url = new URL(httpUrl);//根据URL打开远程连接conn = (HttpURLConnection) url.openConnection();//设置参数conn.setRequestMethod(METHOD_POST);conn.setRequestProperty("Connection", "Keep-Alive");conn.setRequestProperty("Charset", CHARTSET);conn.setDoOutput(true);conn.setDoInput(true);conn.setUseCaches(false);conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + BOUNDARY);DataOutputStream out = new DataOutputStream(conn.getOutputStream());//传送文本类型参数if (queryString != null && !queryString.equals("")){//分割文本类型参数字符串String[] params = queryString.split("&");for (String str : params){if (str != null && !str.equals("")){if (str.indexOf("=") > -1){String[] param = str.split("=");//获取参数值String value = (param.length == 2 ? TextUtil.decode(param[1]) : "");//添加数据分隔线out.writeBytes(PREFIX + BOUNDARY + RETURN);//添加参数名out.writeBytes("Content-Disposition: form-data; name=\"" + param[0] + "\"" + RETURN);//添加\r\nout.writeBytes(RETURN);//添加参数的值out.write(value.getBytes(CHARTSET));//添加\r\nout.writeBytes(RETURN);}}}}//遍历文件列表for (Parameter file : files){//获取文件名String fileName = file.getValue().substring(file.getValue().lastIndexOf("/") + 1);//添加数据分隔线out.writeBytes(PREFIX + BOUNDARY + RETURN);//添加文件信息out.writeBytes("Content-Disposition: form-data; name=\"" + file.getName() + "\"; filename=\"" + fileName + "\"" + RETURN);//添加\r\nout.writeBytes(RETURN);//创建文件输入流FileInputStream fis = new FileInputStream(file.getValue());//设置缓冲区byte[] buffer = new byte[BUFFER]; int count = 0;while ((count = fis.read(buffer)) != -1){out.write(buffer, 0, count);}fis.close();out.writeBytes(RETURN);}//添加数据分隔线out.writeBytes(PREFIX + BOUNDARY + PREFIX + RETURN);out.flush();out.close();//获取返回码int responseCode = conn.getResponseCode();System.out.println("返回码="+responseCode);if (responseCode == HTTP_OK){//获取输入流inStream = conn.getInputStream();//从输入流中获取信息response = getResponse(inStream);}else{//请求失败response = "返回码："+responseCode;}} catch (Exception e){throw e;}finally{//关闭连接conn.disconnect();}return response;}}