java实现接受，并且通过dom4j解析xml

System.out.println("==================进入testApiXml()==================");
		//localhost:8080/scms_sin/login/Login/testApi.jspx
		String method = ServletActionContext.getRequest().getMethod();
		System.out.println(method);
		String ret = "";
		String xtbh = request.getParameter("xtbh");
		String jkxlh = request.getParameter("jkxlh");
		String jkid = request.getParameter("jkid");
		try {
			StringBuffer info = new java.lang.StringBuffer();
			InputStream in = request.getInputStream();
			BufferedInputStream buf = new BufferedInputStream(in);

			byte[] buffer = new byte[1024];
			int iRead;
			while ((iRead = buf.read(buffer)) != -1) {
				info.append(new String(buffer, 0, iRead, "UTF-8"));
			}
			 // 创建saxReader对象  
	        SAXReader reader = new SAXReader();  
	        // 通过read方法读取一个文件 转换成Document对象  
	        Document document = DocumentHelper.parseText(info.toString()); 
	        //获取根节点元素对象  
	        Element node = document.getRootElement();  
	        System.out.println("根节点：" + node.getName()); // 拿到根节点的名称
	        //遍历所有的元素节点  
	        Iterator iter = node.elementIterator("cxtj"); // 获取根节点下的子节点cxtj
	        String yhm = "";
	        String dlmm = "";
	        while (iter.hasNext()) {
	        	Element cxtj = (Element) iter.next();
	        	yhm = cxtj.elementTextTrim("yhm"); // 拿到cxtj节点下的子节点yhm值
	        	dlmm = cxtj.elementTextTrim("dlmm"); // 拿到cxtj节点下的子节点yhm值
	        	System.out.println("yhm:"+yhm+";dlmm:"+ dlmm);
			}
	        
	        
	        
	        if(StringUtils.isBlank(yhm)){
	        	ret=this.createErrorMsgs("0", "非法的查询条件【用户名为空】");
	        	return null;
	        }
	        if(StringUtils.isBlank(dlmm)){
	        	ret=this.createErrorMsgs("0", "非法的查询条件【登录密码为空】");
	        	return null;
	        }
	        
	        //查询用户是否存在
	        Map<String, Object> map = new HashMap<String, Object>();
	        map.put("loginName", yhm);
	        baseUser=baseLoginManager.checkUser(map);
	        if(baseUser == null){
        		baseUser = new BaseUser();
        	}
	        if(StringUtils.isNotBlank(baseUser.getLoginName())){
	        	//查询数据是否存在
	        	baseUser=baseLoginManager.login(yhm, MD5.getMd5(dlmm));
	        	if(baseUser == null){
	        		baseUser = new BaseUser();
	        	}
	        	if(StringUtils.isNotBlank(baseUser.getLoginName())){
	        		ret=this.createErrorMsgs("1", "用户存在");
	        	}else{
	        		ret=this.createErrorMsgs("0", "【密码有误】");
	        	}
	        }else{
	        	ret=this.createErrorMsgs("0", "【用户不存在】");
	        }
	        
	        
	        
	        
	        
	        
	        /*//创建xml
	        Document doc = DocumentHelper.createDocument();
	        Element root = doc.addElement("root");
	        //生成root的一个接点  
	        Element category = root.addElement("user");  
	        //生产user的一个接点  
	        Element id = category.addElement("id"); */
			
			response.setContentType("text/xml;charset=utf-8");
			PrintWriter out = null;
			out = response.getWriter();
			out.print(ret);
		} catch (Exception e) {
			e.printStackTrace();
			ret=this.createErrorMsgs("0", "调用接口异常："+e.getMessage());
		}
		//System.out.println(get);