哪位大神能告诉我怎么用java封装get和post请求
哪位大神能告诉我怎么用java封装get和post请求
这里举例说一下post请求的封装,get请求类似
@Test
public void f1(){
try {
String url = "http://XXXXX:XXXX/futureloan/mvc/api/member/login";
HttpPost post = new HttpPost(url);
List<NameValuePair> parameters = new ArrayList<NameValuePair>();
parameters.add(new BasicNameValuePair("mobilephone", 13455555555));
parameters.add(new BasicNameValuePair("pwd", e10adc3949ba59abbe56e057f20f883e));
parameters.add(new BasicNameValuePair("type", 1));
// entity为原生form表单格式,可以从请求中Content-Type:
// application/x-www-form-urlencoded中获得
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters);
post.setEntity(entity);
// 创建一个客户端
CloseableHttpClient httpClient = HttpClients.createDefault();
//发送请求包
CloseableHttpResponse response = httpClient.execute(post);
//获得响应体
HttpEntity respEntity = response.getEntity();
String respResult = EntityUtils.toString(respEntity);
System.out.println(respResult);
} catch (Exception e) {
e.printStackTrace();
}
}
封装的思路,抽取出不变的部分,提取出参数(需要变化的:比如url地址,请求参数)--此处补充说明:从上面可看出请求参数存放在List parameters 中,该依赖于httpClient,所以此处可换成HashMap,更具有通用性
private static String post(String url, Map<String, String> paramsMap) {
String respResult = "";
try {
// 生成post请求
HttpPost post = new HttpPost(url);
if (paramsMap != null) {
// 设置post请求参数--请求体中间
// 创建一个容器,将保存在HashMap中的参数保存到这个容器中
List<NameValuePair> paramsList = new ArrayList<>();
Set<String> keySet = paramsMap.keySet();
for (String key : keySet) {
String value = paramsMap.get(key);
paramsList.add(new BasicNameValuePair(key, value));
}
// 创建一个原生form表单的请求体
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramsList);
// 设置post请求体
post.setEntity(entity);
}
// 创建一个HTTP发送客户端
CloseableHttpClient httpClient = HttpClients.createDefault();
// 发数据包
CloseableHttpResponse response = httpClient.execute(post);
// 获取响应体中的内容
HttpEntity respEntity = response.getEntity();
respResult = EntityUtils.toString(respEntity);
return respResult;
} catch (Exception e) {
e.printStackTrace();
}
return respResult;
}
调用方法
@Test
public void post() {
// 1.请求地址
String url = "http://XXXXX:XXXX/lmcanon_web_auto/mvc/member/api/member/login";
// 3.设置post请求参数--请求体中间
// 创建一个容器,保存每个参数
HashMap<String,String> paramsMap=new HashMap<>();
paramsMap.put("mobilephone", 13555555555);
paramsMap.put("pwd", e10adc3949ba59abbe56e057f20f883e);
paramsMap.put("type", 1);
//返回响应体
String respResult=HttpUtils.post(url, paramsMap);
System.out.println(respResult);
}
/**以get的方法处理接口请求调用
* @param url
* @param params
* @return
*/
public static String doGet(String url,Map<String, String> params) {
List<BasicNameValuePair> parameters = new ArrayList<BasicNameValuePair>();
// 取出所有参数
Set<String> keys = params.keySet();
// 通过循环将参数保存到lst集合
for(String name:keys) {
String value = params.get(name);
parameters.add(new BasicNameValuePair(name, value));
}
String parameter = URLEncodedUtils.format(parameters, "UTF-8");
url+="?"+ parameter;
HttpGet httpGet = new HttpGet(url);
HttpClient httpClient = HttpClients.createDefault();
String result ="";
try {
HttpResponse httpResponse = httpClient.execute(httpGet);
result =EntityUtils.toString(httpResponse.getEntity());
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
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