HTTP POST GET

(1) 将数据封装为json格式，然后再发送
/**
*
*/
package com.inspur;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;

import net.sf.json.JSONObject;

/**

ClassName: contect_flask
Function: TODO ADD FUNCTION
@author: xuzheng
date: 2019-7-1 下午2:03:00
*/
public class contect_flask {

/**
- @param args
  */
  public static void main(String[] args) {
  // TODO Auto-generated method stub
  JSONObject jsonObject1 = new JSONObject();
  JSONObject jsonObject2 = new JSONObject();
  jsonObject2.put(“deviceID”, “110”);
  jsonObject2.put(“state”, “0”);
  jsonObject2.put(“channel”, “channel”);
  jsonObject1.put(“item”, jsonObject2);
  jsonObject1.put(“requestCommand”, “control”);
  String result = contect_flask.post(jsonObject1, “http://172.30.12.188:5003/test/hello”);
  
  System.out.println(result);
}

public static String post(JSONObject json, String url){
String result = “”;
HttpPost post = new HttpPost(url);
try{
CloseableHttpClient httpClient = HttpClients.createDefault();
```
  post.setHeader("Content-Type","application/json;charset=utf-8");post.addHeader("Authorization", "Basic YWRtaW46");StringEntity postingString = new StringEntity(json.toString(),"utf-8");post.setEntity(postingString);HttpResponse response = httpClient.execute(post);InputStream in = response.getEntity().getContent();BufferedReader br = new BufferedReader(new InputStreamReader(in, "utf-8"));StringBuilder strber= new StringBuilder();String line = null;while((line = br.readLine())!=null){strber.append(line+'\n');}br.close();in.close();result = strber.toString();if(response.getStatusLine().getStatusCode()!=HttpStatus.SC_OK){result = "服务器异常";}} catch (Exception e){System.out.println("请求异常");throw new RuntimeException(e);} finally{post.abort();}return result;
```
}
}
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三、Get请求方式
(1) 无参数的Get请求方式
/**

*/
package com.inspur;

import net.sf.json.JSONObject;

/**

ClassName: contect_flask
Function: TODO ADD FUNCTION
@author: xuzheng
date: 2019-7-1 下午2:03:00
*/
public class contect_flask {

/**
- @param args
  */
  public static void main(String[] args) {
  // TODO Auto-generated method stub
  String result = contect_flask.get(“http://172.30.12.188:5003/test/hello”);
  
  System.out.println(result);
  }
public static String get(String url){
String result = “”;
HttpGet get = new HttpGet(url);
try{
CloseableHttpClient httpClient = HttpClients.createDefault();
```
  HttpResponse response = httpClient.execute(get);result = getHttpEntityContent(response);if(response.getStatusLine().getStatusCode()!=HttpStatus.SC_OK){result = "服务器异常";}} catch (Exception e){System.out.println("请求异常");throw new RuntimeException(e);} finally{get.abort();}return result;
```
}

public static String getHttpEntityContent(HttpResponse response) throws UnsupportedOperationException, IOException{
String result = “”;
HttpEntity entity = response.getEntity();
if(entity != null){
InputStream in = entity.getContent();
BufferedReader br = new BufferedReader(new InputStreamReader(in, “utf-8”));
StringBuilder strber= new StringBuilder();
String line = null;
while((line = br.readLine())!=null){
strber.append(line+’\n’);
}
br.close();
in.close();
result = strber.toString();
}
```
 return result;
```
}

}
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(2) 有参数的Get请求方式
/**
*
*/
package com.inspur;

import net.sf.json.JSONObject;

/**

ClassName: contect_flask
Function: TODO ADD FUNCTION
@author: xuzheng
date: 2019-7-1 下午2:03:00
*/
public class contect_flask {

/**
- @param args
  */
  public static void main(String[] args) {
  // TODO Auto-generated method stub
  Map<String, String> map = new HashMap<String, String>();
  map.put(“name”, “root”);
  map.put(“password”, “123456”);
  String result = contect_flask.get(map, “http://172.30.12.188:5003/test/hello”);
  
  System.out.println(result);
}

public static String get(Map<String, String> paramMap, String url){
String result = “”;
HttpGet get = new HttpGet(url);
try{
CloseableHttpClient httpClient = HttpClients.createDefault();
List params = setHttpParams(paramMap);
String param = URLEncodedUtils.format(params, “UTF-8”);
get.setURI(URI.create(url + “?” + param));
HttpResponse response = httpClient.execute(get);
result = getHttpEntityContent(response);
```
    if(response.getStatusLine().getStatusCode()!=HttpStatus.SC_OK){result = "服务器异常";}} catch (Exception e){System.out.println("请求异常");throw new RuntimeException(e);} finally{get.abort();}return result;
```
}

public static List setHttpParams(Map<String, String> paramMap){
List params = new ArrayList();
Set<Map.Entry<String, String>> set = paramMap.entrySet();
for(Map.Entry<String, String> entry : set){
params.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
return params;
}

public static String getHttpEntityContent(HttpResponse response) throws UnsupportedOperationException, IOException{
String result = “”;
HttpEntity entity = response.getEntity();
if(entity != null){
InputStream in = entity.getContent();
BufferedReader br = new BufferedReader(new InputStreamReader(in, “utf-8”));
StringBuilder strber= new StringBuilder();
String line = null;
while((line = br.readLine())!=null){
strber.append(line+’\n’);
}
br.close();
in.close();
result = strber.toString();
}
```
 return result;
```
}
}

HTTP POST GET

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