基于JDK8实现的发送HTTP请求工具类。包含 get, post, put, delete 协议的请求。即拿即用，没有引入其它 jar 依赖。
使用方便，传入参数、请求头的 key 和 value 都是 String 类型。
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请求地址
String URL = "https://www.baidu.com";
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请求参数：通过
HttpClient.Entry设置HttpClient.Entry params = new HttpClient.Entry() .setKeyValue("paramKey1", "paramValue1") .setKeyValue("paramKey2", "paramValue2") .setKeyValue("paramKey3", "paramValue3");
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请求头：通过
HttpClient.Entry设置HttpClient.Entry header = new HttpClient.Entry() .setKeyValue(HttpClient.Header.ACCEPT_CHARSET.name(), "utf-8") .setKeyValue(HttpClient.Header.CONTENT_TYPE.name(), "application/json; charset=utf-8");
请求头中的 Key 可以通过
HttpClient.Header获取。如：HttpClient.Header.ACCEPT_CHARSET.name()的值为Accept-Charset。 -
返回结果，回调接口
HttpClient.OnHttpResult onHttpResult = new HttpClient.OnHttpResult() { @Override public void onSuccess(String result) { System.out.format("请求成功：%s", result); } @Override public void onError(String message) { System.out.format("请求失败：%s", message); } };
GET
HttpClient.get(URL, params);
HttpClient.get(URL, params, header);
HttpClient.get(URL, params, onHttpResult);
HttpClient.get(URL, params, header, onHttpResult);POST
HttpClient.post(URL, params);
HttpClient.post(URL, params, header);
HttpClient.post(URL, params, onHttpResult);
HttpClient.post(URL, params, header, onHttpResult);PUT
HttpClient.put(URL, params);
HttpClient.put(URL, params, header);
HttpClient.put(URL, params, onHttpResult);
HttpClient.put(URL, params, header, onHttpResult);DELETE
HttpClient.delete(URL, params);
HttpClient.delete(URL, params, header);
HttpClient.delete(URL, params, onHttpResult);
HttpClient.delete(URL, params, header, onHttpResult);运行举例
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例如
HttpClient.get(URL, params, header, onHttpResult);请求结果：请求成功：<!DOCTYPE html> <!--STATUS OK--><html> <head><meta http-equiv=content-type content=text/html;charset=utf-8><meta http-equiv=X-UA-Compatible content=IE=Edge><meta content=always name=referrer><link rel=stylesheet type=text/css href=https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/bdorz/baidu.min.css><title>百度一下，你就知道</title></head> .............. -
例如
HttpClient.get(URL, params);：-
Input:
String result = HttpClient.get(URL, params); System.out.println(result);
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Output:
<!DOCTYPE html> <!--STATUS OK--><html> <head><meta http-equiv=content-type content=text/html;charset=utf-8><meta http-equiv=X-UA-Compatible content=IE=Edge><meta content=always name=referrer><link rel=stylesheet type=text/css href=https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/bdorz/baidu.min.css><title>百度一下，你就知道</title></head> ..............
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完整例子
public class HttpTest { public static void main(String[] args) { // 请求地址 String URL = "https://www.baidu.com"; // 请求参数 HttpClient.Entry params = new HttpClient.Entry() .setKeyValue("paramKey1", "paramValue1") .setKeyValue("paramKey2", "paramValue2") .setKeyValue("paramKey3", "paramValue3"); // 请求头 HttpClient.Entry header = new HttpClient.Entry() .setKeyValue(HttpClient.Header.ACCEPT_CHARSET.name(), "utf-8") .setKeyValue(HttpClient.Header.CONTENT_TYPE.name(), "application/json; charset=utf-8"); // 返回结果，回调接口 HttpClient.OnHttpResult onHttpResult = new HttpClient.OnHttpResult() { @Override public void onSuccess(String result) { System.out.format("请求成功：%s", result); } @Override public void onError(String message) { System.out.format("请求失败：%s", message); } }; // 发送请求 HttpClient.post(URL, params, header, onHttpResult); } }