java.lang.StringBuilder的使用以及如何post方式post xml

举例：

java.lang.StringBuilder sbReq = new java.lang.StringBuilder();

sbReq.append("<?xml version=\"1.0\" encoding=\"gb2312\"?>");

sbReq.append("<RequestData>");

sbReq.append("<clickSysId>%s</clickSysId>");

sbReq.append("<userAccount>%s</userAccount>");

sbReq.append("<retCode>%s</retCode>");

sbReq.append("<mKey>%s</mKey>");

sbReq.append("<timestamp>%s</timestamp>");

sbReq.append("</RequestData>");

String sReqXml = sbReq.toString();

sReqXml = String.format(sReqXml, clickSysId, userAccount, retCode ,smKey, stimestamp);

StringBuilder就是拼String，拼好了还可以用format格式化里面的参数。

post方式post xml，并获取返回状态：

HttpClient client = new HttpClient();

PostMethod method = new PostMethod("http://*****/***.aspx");

try{

method.setRequestHeader("Content-Type","text/xml; charset=GB2312");

method.setRequestBody(sReqXml);

client.executeMethod(method);

InputStream resStream = method.getResponseBodyAsStream();

BufferedReader br = new BufferedReader(new InputStreamReader(resStream));

StringBuffer resBuffer = new StringBuffer();

String resTemp = "";

while((resTemp = br.readLine()) != null){

resBuffer.append(resTemp);

}

sResult = resBuffer.toString();

System.out.println("sResult:" + sResult);

//截取字串。。。。

//

}catch(Exception e){

e.printStackTrace();

}finally{

method.releaseConnection();

}