httpclient 4.3.1 post get的工具类

梦里梦外; 2021-06-24 13:59 367阅读 0赞

`package`  `com.ryx.util;`

`import`  `java.util.ArrayList;`

`import`  `java.util.List;`

`import`  `java.util.Map;`

`import`  `org.apache.commons.lang.StringUtils;`

`import`  `org.apache.http.HttpEntity;`

`import`  `org.apache.http.NameValuePair;`

`import`  `org.apache.http.client.config.RequestConfig;`

`import`  `org.apache.http.client.entity.UrlEncodedFormEntity;`

`import`  `org.apache.http.client.methods.CloseableHttpResponse;`

`import`  `org.apache.http.client.methods.HttpGet;`

`import`  `org.apache.http.client.methods.HttpPost;`

`import`  `org.apache.http.impl.client.CloseableHttpClient;`

`import`  `org.apache.http.impl.client.HttpClientBuilder;`

`import`  `org.apache.http.message.BasicNameValuePair;`

`import`  `org.apache.http.util.EntityUtils;`

`/**`

` ` `* 基于 httpclient 4.3.1版本的 http工具类`

` ` `* @author mcSui`

` ` `*`

` ` `*/`

`public`  `class`  `HttpTookit {`

`    ` `private`  `static`  `final`  `CloseableHttpClient httpClient;`

`    ` `public`  `static`  `final`  `String CHARSET = ` `"UTF-8"` `;`

`    ` `static`  `{`

`        ` `RequestConfig config = RequestConfig.custom().setConnectTimeout(` `60000` `).setSocketTimeout(` `15000` `).build();`

`        ` `httpClient = HttpClientBuilder.create().setDefaultRequestConfig(config).build();`

`    ` `}`

`    ` `public`  `static`  `String doGet(String url, Map<String, String> params){`

`        ` `return`  `doGet(url, params,CHARSET);`

`    ` `}`

`    ` `public`  `static`  `String doPost(String url, Map<String, String> params){`

`        ` `return`  `doPost(url, params,CHARSET);`

`    ` `}`

`    ` `/**`

`     ` `* HTTP Get 获取内容`

`     ` `* @param url  请求的url地址 ?之前的地址`

`     ` `* @param params 请求的参数`

`     ` `* @param charset    编码格式`

`     ` `* @return    页面内容`

`     ` `*/`

`    ` `public`  `static`  `String doGet(String url,Map<String,String> params,String charset){`

`        ` `if` `(StringUtils.isBlank(url)){`

`            ` `return`  `null` `;`

`        ` `}`

`        ` `try`  `{`

`            ` `if` `(params != ` `null`  `&& !params.isEmpty()){`

`                ` `List<NameValuePair> pairs = ` `new`  `ArrayList<NameValuePair>(params.size());`

`                ` `for` `(Map.Entry<String,String> entry : params.entrySet()){`

`                    ` `String value = entry.getValue();`

`                    ` `if` `(value != ` `null` `){`

`                        ` `pairs.add(` `new`  `BasicNameValuePair(entry.getKey(),value));`

`                    ` `}`

`                ` `}`

`                ` `url += ` `"?"`  `+ EntityUtils.toString(` `new`  `UrlEncodedFormEntity(pairs, charset));`

`            ` `}`

`            ` `HttpGet httpGet = ` `new`  `HttpGet(url);`

`            ` `CloseableHttpResponse response = httpClient.execute(httpGet);`

`            ` `int`  `statusCode = response.getStatusLine().getStatusCode();`

`            ` `if`  `(statusCode != ` `200` `) {`

`                ` `httpGet.abort();`

`                ` `throw`  `new`  `RuntimeException(` `"HttpClient,error status code :"`  `+ statusCode);`

`            ` `}`

`            ` `HttpEntity entity = response.getEntity();`

`            ` `String result = ` `null` `;`

`            ` `if`  `(entity != ` `null` `){`

`                ` `result = EntityUtils.toString(entity, ` `"utf-8"` `);`

`            ` `}`

`            ` `EntityUtils.consume(entity);`

`            ` `response.close();`

`            ` `return`  `result;`

`        ` `} ` `catch`  `(Exception e) {`

`            ` `e.printStackTrace();`

`        ` `}`

`        ` `return`  `null` `;`

`    ` `}`

`    `

`    ` `/**`

`     ` `* HTTP Post 获取内容`

`     ` `* @param url  请求的url地址 ?之前的地址`

`     ` `* @param params 请求的参数`

`     ` `* @param charset    编码格式`

`     ` `* @return    页面内容`

`     ` `*/`

`    ` `public`  `static`  `String doPost(String url,Map<String,String> params,String charset){`

`        ` `if` `(StringUtils.isBlank(url)){`

`            ` `return`  `null` `;`

`        ` `}`

`        ` `try`  `{`

`            ` `List<NameValuePair> pairs = ` `null` `;`

`            ` `if` `(params != ` `null`  `&& !params.isEmpty()){`

`                ` `pairs = ` `new`  `ArrayList<NameValuePair>(params.size());`

`                ` `for` `(Map.Entry<String,String> entry : params.entrySet()){`

`                    ` `String value = entry.getValue();`

`                    ` `if` `(value != ` `null` `){`

`                        ` `pairs.add(` `new`  `BasicNameValuePair(entry.getKey(),value));`

`                    ` `}`

`                ` `}`

`            ` `}`

`            ` `HttpPost httpPost = ` `new`  `HttpPost(url);`

`            ` `if` `(pairs != ` `null`  `&& pairs.size() > ` `0` `){`

`                ` `httpPost.setEntity(` `new`  `UrlEncodedFormEntity(pairs,CHARSET));`

`            ` `}`

`            ` `CloseableHttpResponse response = httpClient.execute(httpPost);`

`            ` `int`  `statusCode = response.getStatusLine().getStatusCode();`

`            ` `if`  `(statusCode != ` `200` `) {`

`                ` `httpPost.abort();`

`                ` `throw`  `new`  `RuntimeException(` `"HttpClient,error status code :"`  `+ statusCode);`

`            ` `}`

`            ` `HttpEntity entity = response.getEntity();`

`            ` `String result = ` `null` `;`

`            ` `if`  `(entity != ` `null` `){`

`                ` `result = EntityUtils.toString(entity, ` `"utf-8"` `);`

`            ` `}`

`            ` `EntityUtils.consume(entity);`

`            ` `response.close();`

`            ` `return`  `result;`

`        ` `} ` `catch`  `(Exception e) {`

`            ` `e.printStackTrace();`

`        ` `}`

`        ` `return`  `null` `;`

`    ` `}`

`    ` `public`  `static`  `void`  `main(String []args){`

`        ` `String getData = doGet(` `"http://www.oschina.net/"` `,` `null` `);`

`        ` `System.out.println(getData);`

`        ` `System.out.println(` `"----------------------分割线-----------------------"` `);`

`        ` `String postData = doPost(` `"http://www.oschina.net/"` `,` `null` `);`

`        ` `System.out.println(postData);`

`    ` `}`

`    `

`}`

`ps：最新的httpclientjar包现在：http://hc.apache.org/downloads.cgi`

httpclient 4.3.1 post get的工具类

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