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java请求url,java httpclient请求能连wsdl吗

2020-05-08 15:53:42  来源:http://www.capsicumpm.com  编辑:admin

java springMVC中前端一个发出http请求,请求中有A、B两个操作,B操作比较耗时。

如果A操作和B操作之间没有必然的关系的话,可以对B操作另起一个线程去执行,但是如果两个操作之间存在因果关系的话只能等待

怎么用java模拟http请求

/** 得到返回的内容*/public static String getResult(String urlStr, String content) {URL url = null;HttpURLConnection connection = null;try {url = new URL(urlStr);connection = (HttpURLConnection) url.openConnection();connection.setDoOutput(true);connection.setDoInput(true);connection.setRequestMethod("POST");connection.setUseCaches(false);connection.connect();DataOutputStream out = new DataOutputStream(connection.getOutputStream());out.writeBytes(content);out.flush();out.close();BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));StringBuffer buffer = new StringBuffer();String line = "";while ((line = reader.readLine()) != null) {buffer.append(line);}reader.close();return buffer.toString();} catch (IOException e) {e.printStackTrace();} finally {if (connection != null) {connection.disconnect();}}return null;}追问:没注释吗?追答:/** 得到返回的内容*/public static String getResult(String urlStr, String content) {URL url = null;HttpURLConnection connection = null;try {url = new URL(urlStr);connection = (HttpURLConnection) url.openConnection();//新建连接实例connection.setDoOutput(true);//是否打开输出流 true|falseconnection.setDoInput(true);//是否打开输入流true|falseconnection.setRequestMethod("POST");//提交方法POST|GETconnection.setUseCaches(false);//是否缓存true|falseconnection.connect();//打开连接端口DataOutputStream out = new DataOutputStream(connection.getOutputStream());//打开输出流往对端服务器写数据out.writeBytes(content);//写数据,也就是提交你的表单 name=xxx&pwd=xxxout.flush();//刷新out.close();//关闭输出流BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));//往对端写完数据 对端服务器返回数据 ,以BufferedReader流来读取StringBuffer buffer = new StringBuffer();String line = "";while ((line = reader.readLine()) != null) {buffer.append(line);}reader.close();return buffer.toString();} catch (IOException e) {e.printStackTrace();} finally {if (connection != null) {connection.disconnect();//关闭连接}}return null;}

java post请求参数怎么写

//serverURL url地址HttpPost httpPost = new HttpPost(serverURL);//param 为参数StringEntity entity = new StringEntity(param);entity.setContentType("application/x-www-form-urlencoded");httpPost.setEntity(entity);HttpResponse httpResponse = httpClient.execute(httpPost);还可以用map作为参数List<NameValuePair> formparams = new ArrayList<NameValuePair>();if(param!=null){Set set = param.keySet();Iterator iterator = set.iterator();while (iterator.hasNext()) {Object key = iterator.next();Object value = param.get(key);formparams.add(new BasicNameValuePair(key.toString(), value.toString()));}}

java中的每一个filter过滤器是不是对每一次的请求和响应都会执行过滤?

/*的话肯定是每次都进,不过具体看你对过滤器配置的范围,你可以在过滤器中打个断点,然后访问,看它进不进这个断点就知道了!本回答被网友采纳

java服务器端怎么设置ajax 的跨域请求头

在服务端设置response.setHeader("Access-Control-Allow-Origin", "*");即可。Access-Control-Allow-Origin:* 表示允许任何域名跨域访问如果需要指定某域名才允许跨域访问,只需把Access-Control-Allow-Origin:*改为Access-Control-Allow-Origin:允许的域名例如:response.setHeader("Access-Control-Allow-Origin", "http://www.client.com");