模拟表单提交

httpclient模拟表单提交

1. 创建httpclient对象，相当于创建浏览器。

   CloseableHttpClient client = HttpClients.createDefault();

   
   

2. 创建请求方法，这里以post方法为例。
   HttpPost httpPost = new HttpPost("http://localhost:8080/csdn/admin/login")
   
   

3. 设置表单提交的相关参数。
   List<NameValuePair> list = new ArrayList<NameValuePair>();    list.add(new BasicNameValuePair("username", "json"));    list.add(new BasicNameValuePair("password", "123"));
   
   

4. 创建表单实体，设置字符编码等。
   UrlEncodedFormEntity uyrlEntity = new UrlEncodedFormEntity(list, "utf-8");
   
   

5. 设置请求实体（是这样讲吗），执行请求并处理response对象。
   httpPost.setEntity(uyrlEntity);     CloseableHttpResponse response =   client.execute(httpPost);     HttpEntity entity1 = response.getEntity();      InputStream io1 =entity1.getContent();     InputStreamReader isReader1 = new InputStreamReader(io1, "utf-8");     BufferedReader bfReader1 = new BufferedReader(isReader1);     String string1 = "",str1;     while((str1=bfReader1.readLine())!=null){     string1+=str1;     }     System.out.println(string1);