Java 应用程序需要直接通过 HTTP 协议来访问网络资源

package com.gpcsoft.srplatform.sms;

import https://www.360docs.net/doc/e44050907.html,.URLEncoder;

import java.util.Random;

import https://www.360docs.net/doc/e44050907.html,mons.httpclient.HttpClient;

import https://www.360docs.net/doc/e44050907.html,ValuePair;

import https://www.360docs.net/doc/e44050907.html,mons.httpclient.methods.PostMethod;

public class SendSMSUtil {

/**

*Description:在java程序里面使用HttpClient来访问http链接

*@param address请求地址

*@param account请求连接的账号

*@param password请求连接账号的密码

*@param mobile用户移动电话

*@param content发送的内容

*@param type请求方式

*@return

*@throws Exception

*

*@author liaody at2012-6-28下午09:13:28

*@company zhzc

*/

private String sendSMSMessage(String address,String account,String password,String mobile,String content,String type) throws Exception

{

HttpClient httpclient=new HttpClient();//使用HttpClient访问http链接

//以post方式提交

PostMethod postmethod = new PostMethod(address);//给链接添加参数

NameValuePair[] postData=new NameValuePair[5];

//HttpClient添加参数，并加密参数值

postData[0]=new NameValuePair("zh",URLEncoder.encode(account, "UTF-8"));

postData[1]=new NameValuePair("mm",URLEncoder.encode(password, "UTF-8"));

postData[2]=new NameValuePair("hm",URLEncoder.encode(mobile, "UTF-8"));

postData[3]=new NameValuePair("nr",URLEncoder.encode(content, "UTF-8"));

postData[4]=new NameValuePair("sms_type",URLEncoder.encode(type, "UTF-8"));

postmethod.addParameters(postData);//附参数

int sendStatus=0;

sendStatus = httpclient.executeMethod(postmethod);//请求返回的状态，200表示成功

String resultMessage = "";

//postmethod.getResponseBodyAsString()求http链接后返回来的值

if("200".equals(sendStatus)&&"0".equals(postmethod.getResponseBodyAsString())) {

resultMessage = "请求成功";

}else{

resultMessage = "请求失败";

}

return resultMessage;

}

public static void main(String[] args) throws Exception

{

SendSMSUtil sc = new SendSMSUtil();

Random random = new Random();

int a = random.nextInt(10);

int b = random.nextInt(10);

int c = random.nextInt(10);

int d = random.nextInt(10);

int e = random.nextInt(10);

int f = random.nextInt(10);

String phonecode = a + "" + b + "" + c + "" + d + "" + e + "" + f;//生成随机码

String address = "https://www.360docs.net/doc/e44050907.html,";//Http访问地址

String account = "nbcqjy";

String password = "588888";

String mobile = "1383838438";

String content = phonecode + "[Http的Java访问]";

String type = "74";

sc.sendSMSMessage(address, account, password, mobile, content, type);

}

}

//以get方式提交

package http.demo;

import java.io.IOException;

import https://www.360docs.net/doc/e44050907.html,mons.httpclient.*;

import https://www.360docs.net/doc/e44050907.html,mons.httpclient.methods.*;

/**

*最简单的HTTP客户端,用来演示通过GET或者POST方式访问某个页面

*/

public class SimpleClient{

public static void main(String[]args)throws IOException

{

HttpClient client=new HttpClient();

//设置代理服务器地址和端口

//client.getHostConfiguration().setProxy("proxy_host_addr",proxy_port);

//使用GET方法，如果服务器需要通过HTTPS连接，那只需要将下面URL中的http换成https HttpMethodmethod=new GetMethod("https://www.360docs.net/doc/e44050907.html,");

//使用POST方法

//HttpMethod method = new PostMethod("https://www.360docs.net/doc/e44050907.html,");

client.executeMethod(method);

//打印服务器返回的状态

System.out.println(method.getStatusLine());

//打印返回的信息

System.out.println(method.getResponseBodyAsString());

//释放连接

method.releaseConnection();

}

}

在这个例子中首先创建一个HTTP客户端(HttpClient)的实例，然后选择提交的方法是GET或者POST，最后在HttpClient实例上执行提交的方法，最后从所选择的提交方法中读取服务器反馈回来的结果。这就是使用HttpClient的基本流程。其实用一行代码也就可以搞定整个请求的过程，非常的简单！