httpclient的几种请求URL的方式

　　<dependency>      <groupId>org.apache.httpcomponents</groupId>      <artifactId>httpclient</artifactId>      <version>4.5.2</version>    </dependency>

　　　　 //相对于commons-httpclient 3.1这里采用接口的方式来获取httpclient了        HttpClient httpClient = HttpClients.createDefault();        //声明请求方式        HttpGet httpGet = new HttpGet("http://www.baidu.com");        //获取相应数据，这里可以获取相应的数据        HttpResponse httpResponse = httpClient.execute(httpGet);        //拿到实体        HttpEntity httpEntity= httpResponse.getEntity();        //获取结果，这里可以正对相应的数据精细字符集的转码        String result = "";        if (httpEntity != null) {            result = EntityUtils.toString(httpEntity,"utf-8");        }        //关闭连接        httpGet.releaseConnection();

　　　　 //需要传输的数据        Map<String, > map = new HashMap<String,  >();        map.put("1", "1");        map.put("2", "2");        //谷歌的Gson        Gson gson = new Gson();        //相对于commons-httpclient 3.1这里采用接口的方式来获取httpclient了        HttpClient httpClient = HttpClients.createDefault();        //声明请求方式        HttpPost httpPost = new HttpPost("http://www.baidu.com");        //设置消息头        httpPost.setHeader("Content-Type","application/json;charset=utf-8");        httpPost.setHeader("Accept","application/json");        //设置发送数据(数据尽量为json),可以设置数据的发送时的字符集        httpPost.setEntity(new StringEntity(gson.toJson(map),"utf-8"));        //获取相应数据，这里可以获取相应的数据        HttpResponse httpResponse = httpClient.execute(httpPost);        //拿到实体        HttpEntity httpEntity= httpResponse.getEntity();        //获取结果，这里可以正对相应的数据精细字符集的转码        String result = "";        if (httpEntity != null) {            result = EntityUtils.toString(httpEntity,"utf-8");        }        //关闭连接        httpPost.releaseConnection();

　　　　 //需要传输的数据        Map<String, > map = new HashMap<String,  >();        map.put("1", "1");        map.put("2", "2");        //谷歌的Gson        Gson gson = new Gson();        //相对于commons-httpclient 3.1这里采用接口的方式来获取httpclient了        HttpClient httpClient = HttpClients.createDefault();        //声明请求方式        HttpPut httpPut = new HttpPut("http://www.baidu.com");        //设置消息头        httpPut.setHeader("Content-Type","application/json;charset=utf-8");        httpPut.setHeader("Accept","application/json");        //设置发送数据(数据尽量为json),可以设置数据的发送时的字符集        httpPut.setEntity(new StringEntity(gson.toJson(map),"utf-8"));        //获取相应数据，这里可以获取相应的数据        HttpResponse httpResponse = httpClient.execute(httpPut);        //拿到实体        HttpEntity httpEntity= httpResponse.getEntity();        //获取结果，这里可以正对相应的数据精细字符集的转码        String result = "";        if (httpEntity != null) {            result = EntityUtils.toString(httpEntity,"utf-8");        }        //关闭连接        httpPut.releaseConnection();

　　　　 //相对于commons-httpclient 3.1这里采用接口的方式来获取httpclient了        HttpClient httpClient = HttpClients.createDefault();        //声明请求方式        HttpDelete httpDelete = new HttpDelete("http://www.baidu.com");        //设置消息头(这里可以根据自己的接口来设定消息头)        httpDelete.setHeader("Content-Type","application/json;charset=utf-8");        httpDelete.setHeader("Accept","application/json");        //获取相应数据，这里可以获取相应的数据        HttpResponse httpResponse = httpClient.execute(httpDelete);        //拿到实体        HttpEntity httpEntity= httpResponse.getEntity();        //获取结果，这里可以正对相应的数据精细字符集的转码        String result = "";        if (httpEntity != null) {            result = EntityUtils.toString(httpEntity,"utf-8");        }        //关闭连接        httpDelete.releaseConnection();