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Java HttpURLConnection使用方法详解

2019年07月19日  | 移动技术网IT编程  | 我要评论
本文实例为大家分享了java httpurlconnection使用，供大家参考，具体内容如下 包括使用httpurlconnection执行get/post请求

本文实例为大家分享了java httpurlconnection使用，供大家参考，具体内容如下

包括使用httpurlconnection执行get/post请求

package com.cn.testproject;

import java.io.bytearrayoutputstream;
import java.io.ioexception;
import java.io.inputstream;
import java.io.outputstream;
import java.net.httpurlconnection;
import java.net.url;
public class httpconnectionurldemo {
  public static void main(string[] args) throws exception {
    //get();
    post();
  }

 

  public static void get() throws exception {
    string path = "http://www.baidu.com";
    url url = new url(path);
    httpurlconnection conn = (httpurlconnection) url.openconnection();
    conn.setconnecttimeout(5 * 1000);
    conn.setrequestmethod("get");
    inputstream instream = conn.getinputstream();
    byte[] data = tobytearray(instream);
    string result = new string(data, "utf-8");
    system.out.println(result);
  }

 

  public static void post() throws exception {
    string encoding = "utf-8";
    //post的form参数(json兼职对)
    string params = "[{\"addtime\":\"2011-09-19 14:23:02\"[],\"iccid\":\"1111\",\"id\":0,\"imei\":\"2222\",\"imsi\":\"3333\",\"phonetype\":\"4444\",\"remark\":\"aaaa\",\"tel\":\"5555\"}]";
    string path = "http://www.baidu.com";
    byte[] data = params.getbytes(encoding);
    url url = new url(path);
    httpurlconnection conn = (httpurlconnection) url.openconnection();
    conn.setrequestmethod("post");
    conn.setdooutput(true);
   
    conn.setrequestproperty("content-type", "application/x-javascript; charset=" + encoding);
    conn.setrequestproperty("content-length", string.valueof(data.length));
    conn.setconnecttimeout(5 * 1000);
    outputstream outstream = conn.getoutputstream();
    outstream.write(data);
    outstream.flush();
    outstream.close();
    system.out.println(conn.getresponsecode()); // 响应代码 200表示成功
    if (conn.getresponsecode() == 200) {
      inputstream instream = conn.getinputstream();
      string result = new string(tobytearray(instream), "utf-8");
      system.out.println(result); // 响应代码 200表示成功
    }
  }
  private static byte[] tobytearray(inputstream input) throws ioexception {
    bytearrayoutputstream output = new bytearrayoutputstream();
    byte[] buffer = new byte[4096];
    int n = 0;
    while (-1 != (n = input.read(buffer))) {
      output.write(buffer, 0, n);
    }
    return output.tobytearray();
  }
}

github：

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