1.Post请求失败的代码

try {             HttpResponse response = httpClient.execute(httpPost);              HttpEntity entity = response.getEntity();              result = EntityUtils.toString(entity, "UTF-8");             Util.log("API，POST回来的数据是：");             Util.log(result);          } catch (ConnectionPoolTimeoutException e) {             log.e("http get throw ConnectionPoolTimeoutException(wait time out)");          } catch (ConnectTimeoutException e) {             log.e("http get throw ConnectTimeoutException");          } catch (SocketTimeoutException e) {             log.e("http get throw SocketTimeoutException");          }  catch (Exception e) {             log.e("http get throw Exception");          } finally {             httpPost.abort();         }

之前每次代码执行到上述代码的第二行的时候，会等一段时间然后会捕获到Exception异常。

2.分析问题

当然捕获的Exception这个异常太大了我们不便于分析，我们查看一下httpClient.execute(HttpUriRequest uri)的方法；

发下这个方法会抛出IOException, ClientProtocolException这两个异常，但是在调用方法的时候并没有明确捕获他们两个。

3.得出结论

所以很有可能在执行post请求的过程中，遇到了这两个问题，果然我们把代码完善之后

try {            httpClient = new SSLClient();            HttpResponse response = httpClient.execute(httpPost);            HttpEntity entity = response.getEntity();            result = EntityUtils.toString(entity, "UTF-8");            Util.log("API，POST回来的数据是：");            Util.log(result);        } catch (ConnectionPoolTimeoutException e) {            log.e("http get throw ConnectionPoolTimeoutException(wait time out)");        } catch (ConnectTimeoutException e) {            log.e("http get throw ConnectTimeoutException");        } catch (SocketTimeoutException e) {            log.e("http get throw SocketTimeoutException");        } catch (ClientProtocolException e) {            log.e("http get throw ClientProtocolException");        } catch (IOException e) {            e.printStackTrace();        } catch (Exception e) {            log.e("http get throw Exception");        } finally {            httpPost.abort();        }

上述，完善完毕代码后捕捉到了IOException异常，我们把异常打印出来看到了如下信息。

4.解决问题

通过在网上查询可知，这是缺少安全证书时出现的异常，解决方案如下：

等待Oracle/Google/Mozilla等等组织信任CNNIC，算了，洗洗睡吧使用Java的TrustManager忽略所有的SSL请求的证书，仅仅用于开发测试，限于篇幅不做介绍了导入目标网站的证书，然后在开始调用之前，指定keystore就ok了，本文介绍下该方法

目前我们采用第二种方案：由于请求的URL是HTTPS的，为了避免需要证书，所以用一个类继承DefaultHttpClient类，忽略校验过程。

编写一个SSLClient类

package com.phicomm.smarthome.sharedwifi.util;import java.security.cert.CertificateException;import java.security.cert.X509Certificate;import javax.net.ssl.SSLContext;import javax.net.ssl.TrustManager;import javax.net.ssl.X509TrustManager;import org.apache.http.conn.ClientConnectionManager;import org.apache.http.conn.scheme.Scheme;import org.apache.http.conn.scheme.SchemeRegistry;import org.apache.http.conn.ssl.SSLSocketFactory;import org.apache.http.impl.client.DefaultHttpClient;public class SSLClient extends DefaultHttpClient {    public SSLClient() throws Exception {        super();        SSLContext ctx = SSLContext.getInstance("TLS");        X509TrustManager tm = new X509TrustManager() {            @Override            public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {                // TODO Auto-generated method stub            }            @Override            public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {                // TODO Auto-generated method stub            }            @Override            public X509Certificate[] getAcceptedIssuers() {                // TODO Auto-generated method stub                return null;            }        };        ctx.init(null, new TrustManager[] { tm }, null);        SSLSocketFactory ssf = new SSLSocketFactory(ctx, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);        ClientConnectionManager ccm = this.getConnectionManager();        SchemeRegistry sr = ccm.getSchemeRegistry();        sr.register(new Scheme("https", 443, ssf));    }}

对应的实现类：

public HttpResponse sendPostToService(String url, Object pushData) throws IOException, KeyStoreException,            UnrecoverableKeyException, NoSuchAlgorithmException, KeyManagementException {        if (!hasInit) {            init();        }        String result = null;        HttpPost httpPost = new HttpPost(url);        StringEntity postEntity = new StringEntity(pushData.toString(),                ContentType.create("application/x-www-form-urlencoded", "UTF-8"));        // 设置一些Http头信息        httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded");        httpPost.addHeader("connection", "Keep-Alive");        httpPost.addHeader("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");        // 将发送内容填装        httpPost.setEntity(postEntity);        // 设置请求器的配置        httpPost.setConfig(requestConfig);        // 打印待发送的数据        Util.log("=====API，POST过去的数据是：");        Util.log("executing request" + httpPost.getRequestLine());        Util.log("请求头信息===" + httpPost.getAllHeaders().toString());        Util.log("请求状态行===" + httpPost.getRequestLine());        Util.log("请求配置===" + httpPost.getConfig());        Util.log("请求实体===" + httpPost.getEntity().getContentEncoding() + httpPost.getEntity().getContentType()                + httpPost.getEntity().getContent());        HttpResponse response = null;        try {            // 忽略所有的SSL请求的证书            httpClient = new SSLClient();            response = httpClient.execute(httpPost);            HttpEntity entity = response.getEntity();            result = EntityUtils.toString(entity, "UTF-8");            // 打印得到的响应信息            Util.log("API，POST回来的数据是：");            Util.log("=====Entity:" + result);            Util.log("=====Headers:" + response.getAllHeaders());            Util.log("=====StatusLine:" + response.getStatusLine());            Util.log("=====Locale:" + response.getLocale());        } catch (ConnectionPoolTimeoutException e) {            log.e("http get throw ConnectionPoolTimeoutException(wait time out)");        } catch (ConnectTimeoutException e) {            log.e("http get throw ConnectTimeoutException");        } catch (SocketTimeoutException e) {            log.e("http get throw SocketTimeoutException");        } catch (ClientProtocolException e) {            log.e("http get throw ClientProtocolException");        } catch (IOException e) {            e.printStackTrace();        } catch (Exception e) {            log.e("http get throw Exception");        } finally {            httpPost.abort();        }        return response;    }

在第36行使用自定义的SSLClient来忽略掉验证要求

另外注意在postMan中模拟调用的时候我们是用的x-www-form-urlencoded格式的数据请求，就是application/x-www-from-urlencoded,会将表单内的数据转换为键值对。

当action为get时候，浏览器用x-www-form-urlencoded的编码方式把form数据转换成一个字串(name1=value1&name2=value2...)，然后把这个字串append到url后面，用?分割，加载这个新的url。 当action为post时候，浏览器把form数据封装到http body中，然后发送到server。

所以我们需要对传进来的数据做一下处理：

// 拼接x-www-form-urlencoded格式的请求参数        String www_url = "coverimg=" + pushMsgModel.getCoverimg() + "&mode=" + pushMsgModel.getMode() + "&msgcontent="                + pushMsgModel.getMsgContent() + "&msgtype=" + pushMsgModel.getMsgtype() + "&outline="                + pushMsgModel.getOutline() + "&saveRecord=" + pushMsgModel.getSaveRecord() + "&source="                + pushMsgModel.getSource() + "&ticker=" + pushMsgModel.getTicker() + "×tamp="                + pushMsgModel.getTimestamp() + "&title=" + pushMsgModel.getTitle() + "&uid=" + pushMsgModel.getUid()                + "&url=" + pushMsgModel.getUrl();        logger.info("x-www-form-urlencoded格式的请求参数为：" + www_url);

最后效果如下：

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