Android与SSH框架服务器通信方式

1、Android获取SSH框架服务器JSP文件内容

可以通过HttpClient，然后用HtmlParser去解析想要的内容。其中getCommentData(String url)，url为想要抓取的页面地址。

注意：往往获取网页内容时，格式为UTF-8，直接拿数据时，往往会是“<”格式，这时候需要通过StringEscapeUtils.unescapeHtml()处理。

package support;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import logic.MainService;import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;import org.apache.commons.httpclient.HttpException;import org.apache.commons.httpclient.HttpStatus;import org.apache.commons.httpclient.methods.PostMethod;import org.apache.commons.httpclient.params.HttpMethodParams;import org.apache.commons.lang.StringEscapeUtils;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.methods.HttpGet;import org.htmlparser.Node;import org.htmlparser.NodeFilter;import org.htmlparser.Parser;import org.htmlparser.filters.AndFilter;import org.htmlparser.filters.HasAttributeFilter;import org.htmlparser.filters.TagNameFilter;import org.htmlparser.util.NodeList;import org.htmlparser.util.ParserException;import org.htmlparser.util.SimpleNodeIterator;public class CommentData {private List<Map<String, String>> placedatalist ;public List<Map<String, String>> getPlacedatalist() {return placedatalist;}public void setPlacedatalist(List<Map<String, String>> placedatalist) {this.placedatalist = placedatalist;}private String getNoAHref(String source){return source.substring(source.indexOf("\"", source.indexOf("href"))+1, source.lastIndexOf("\""));}private String getAImageSrc(String source){return source.substring(source.indexOf("\"", source.indexOf("src"))+1, source.lastIndexOf("\""));}public List<Map<String, String>> getCommentData(String url) throws ParserException{placedatalist= new ArrayList<Map<String, String>>();HttpGet get=new HttpGet(url);try{ HttpResponse httpReponse=MainService.guiji.getHttpClient().execute(get);  HttpEntity entity=httpReponse.getEntity();        BufferedReader br = new BufferedReader(new InputStreamReader(entity.getContent(),"utf-8"));      String line = null;      String webcontent="";      while ((line = br.readLine()) != null)      {      webcontent+=line;      }      br.close();            Parser parser=new Parser(webcontent);      NodeFilter filter1 = new TagNameFilter("table");        NodeFilter filter2 = new HasAttributeFilter("id","idcomment");        NodeFilter filter = new AndFilter(filter1,filter2);       NodeList nodes = parser.extractAllNodesThatMatch(filter);      SimpleNodeIterator iterator = nodes.elements();      while (iterator.hasMoreNodes()) {      Map<String, String> datamap = new HashMap<String, String>();      datamap.put("userlogo", null);      datamap.put("userlink", null);      datamap.put("idmsgcontent", null);      datamap.put("idmsgpic", null);      datamap.put("idtime", null);      datamap.put("idplace", null);      datamap.put("iddeleteReply", null);      datamap.put("idreply", null);                 Node node = iterator.nextNode();     Parser parser01=new Parser(node.toHtml());           NodeList chilenodes2 = parser01.extractAllNodesThatMatch(new TagNameFilter("a"));     Node tempnode=null;             for(int i=0;i<chilenodes2.size();i++){        tempnode=chilenodes2.elementAt(i);                if(tempnode.getText().contains("iduserlogo")){        datamap.put("userlogo", getAImageSrc(tempnode.toHtml()));        datamap.put("userlink", getNoAHref(tempnode.getText()));        continue;        }        if(tempnode.getText().contains("idmsgcontent")){        datamap.put("idmsgcontent", StringEscapeUtils.unescapeHtml(tempnode.toPlainTextString()));        continue;        }        if(tempnode.getText().contains("idmsgpic")){        datamap.put("idmsgpic", getAImageSrc(tempnode.toHtml()));        continue;        }        if(tempnode.getText().contains("idtime")){        datamap.put("idtime", StringEscapeUtils.unescapeHtml(tempnode.toPlainTextString()));        continue;        }        if(tempnode.getText().contains("idplace")){        datamap.put("idplace", StringEscapeUtils.unescapeHtml(tempnode.toPlainTextString()));        continue;        }        if(tempnode.getText().contains("iddeleteReply")){        datamap.put("iddeleteReply", getNoAHref(tempnode.getText()));        continue;        }        if(tempnode.getText().contains("iddeleteReply")){        datamap.put("iddeleteReply", getNoAHref(tempnode.getText()));        continue;        }        if(tempnode.getText().contains("idreply")){        datamap.put("idreply", getNoAHref(tempnode.getText()));        continue;        }                }                placedatalist.add(datamap);     }            }catch (HttpException e) {e.printStackTrace(); } catch (IOException e)  { } finally {     } return placedatalist;}}

2、Android客户端数据提交给SSH框架服务器

通过使用将数据存入MultipartEntity中，这种方式可以上传文件、字符串；在提交包含中文的字符串时，需要在addPart后面加入Charset.forName(HTTP.UTF_8)，这样不会导致服务器接收乱码。

HttpPost post=new HttpPost(SystemConstant.baseURL+"actionname");其中SystemConstant.baseURL为网站的域名，类似http://172.22.192.37:8888/XXX/，actionname为提交数据到指定的Action名称。

为了保持持久的Session会话，需要进行下面的处理：

CookieStore mCookieStore = ((AbstractHttpClient) httpClient).getCookieStore();
List<Cookie> cookies = mCookieStore.getCookies();
for (int i = 0; i < cookies.size();i++)
{
if ("JSESSIONID".equals(cookies.get(i).getName())) {
JSESSIONID = cookies.get(i).getValue();
break;
}

}

当然JSESSIONID为SSH框架服务器cookie名称，根据不同框架修改这个名称。

public boolean publishMood(Map<String,String> data){HttpClient httpClient=new DefaultHttpClient();HttpPost post=new HttpPost(SystemConstant.baseURL+"publishMood");//如果有数据的话就直接发过去，没有的就不用发了，服务器那边自动会生成数据try{MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE,null,Charset.forName(HTTP.UTF_8));if(data.get("avator")!=null){compressImage((String) data.get("avator"));File file=new File((String) data.get("avator"));multipartEntity.addPart("moodPic",new FileBody(file));}multipartEntity.addPart("messageInfo.msg_content",new StringBody(data.get("msgcontent"),Charset.forName(HTTP.UTF_8)));if(data.get("moodvalue")!=null)multipartEntity.addPart("mood",new StringBody( data.get("moodvalue")));multipartEntity.addPart("messageInfo.coordinate",new StringBody(MainService.guiji.getCoordinate()));post.getParams().setParameter("http.protocol.cookie-policy",CookiePolicy.BROWSER_COMPATIBILITY);post.setEntity(multipartEntity);if(JSESSIONID!=null){post.setHeader("Cookie","JSESSIONID=" + JSESSIONID);}HttpResponse response=httpClient.execute(post);if(response.getStatusLine().getStatusCode()==HttpStatus.SC_OK){CookieStore mCookieStore = ((AbstractHttpClient) httpClient).getCookieStore();                List<Cookie> cookies = mCookieStore.getCookies();                for (int i = 0; i < cookies.size();i++)                 {                     if ("JSESSIONID".equals(cookies.get(i).getName())) {                     JSESSIONID = cookies.get(i).getValue();                        break;                    }                }                return true;}}catch (Exception e) {}return false;  }

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