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@@ -1,12 +1,11 @@
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package com.caimei.util;
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package com.caimei.util;
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import java.io.BufferedReader;
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import java.io.BufferedReader;
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-import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.io.PrintWriter;
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import java.net.URL;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.URLConnection;
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-import java.util.Iterator;
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+import java.nio.charset.StandardCharsets;
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import java.util.List;
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import java.util.List;
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import java.util.Map;
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import java.util.Map;
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@@ -17,61 +16,11 @@ public class HttpRequest {
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/**
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/**
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* 向指定URL发送GET方法的请求
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* 向指定URL发送GET方法的请求
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*
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*
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- * @param url 发送请求的URL
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- * @param param 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
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- * @return URL 所代表远程资源的响应结果
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- * @throws Exception
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+ * @param url 发送请求的URL,请求参数应该是 name1=value1&name2=value2 的形式。
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+ * @return 远程资源的响应结果
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*/
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*/
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- @SuppressWarnings("unused")
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- public static String sendGetWithParameter(String url, String param) throws Exception {
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- StringBuffer result = new StringBuffer();
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- BufferedReader in = null;
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- try {
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- String urlNameString = url + "?" + param;
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- URL realUrl = new URL(urlNameString);
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- // 打开和URL之间的连接
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- URLConnection connection = realUrl.openConnection();
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- // 设置通用的请求属性
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- connection.setRequestProperty("accept", "*/*");
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- connection.setRequestProperty("connection", "Keep-Alive");
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- connection.setRequestProperty("Accept-Charset", "utf-8");
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- connection.setRequestProperty("contentType", "utf-8");
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- connection.setConnectTimeout(5000);
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- // 建立实际的连接
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- connection.connect();
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- // 获取所有响应头字段
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- Map<String, List<String>> map = connection.getHeaderFields();
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- // 遍历所有的响应头字段
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- for (String key : map.keySet()) {
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- // System.out.println(key + "--->" + map.get(key)); //关闭响应头的输出
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- }
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- // 定义 BufferedReader输入流来读取URL的响应
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- in = new BufferedReader(new InputStreamReader(
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- connection.getInputStream()));
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- String line;
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- while ((line = in.readLine()) != null) {
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- result.append(line);
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- }
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- } catch (Exception e) {
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- throw e;
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- }
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- // 使用finally块来关闭输入流
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- finally {
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- try {
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- if (in != null) {
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- in.close();
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- }
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- } catch (Exception e2) {
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- throw e2;
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- }
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- }
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- return result.toString();
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- }
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-
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-
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- @SuppressWarnings("unused")
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public static String sendGet(String url) throws Exception {
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public static String sendGet(String url) throws Exception {
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- StringBuffer result = new StringBuffer();
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+ StringBuilder result = new StringBuilder();
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BufferedReader in = null;
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BufferedReader in = null;
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try {
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try {
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@@ -88,10 +37,6 @@ public class HttpRequest {
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connection.connect();
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connection.connect();
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// 获取所有响应头字段
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// 获取所有响应头字段
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Map<String, List<String>> map = connection.getHeaderFields();
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Map<String, List<String>> map = connection.getHeaderFields();
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- // 遍历所有的响应头字段
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- for (String key : map.keySet()) {
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- // System.out.println(key + "--->" + map.get(key));
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- }
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// 定义 BufferedReader输入流来读取URL的响应
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// 定义 BufferedReader输入流来读取URL的响应
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in = new BufferedReader(new InputStreamReader(
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in = new BufferedReader(new InputStreamReader(
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connection.getInputStream()));
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connection.getInputStream()));
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@@ -99,17 +44,11 @@ public class HttpRequest {
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while ((line = in.readLine()) != null) {
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while ((line = in.readLine()) != null) {
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result.append(line);
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result.append(line);
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}
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}
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- } catch (Exception e) {
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- throw e;
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}
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}
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// 使用finally块来关闭输入流
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// 使用finally块来关闭输入流
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finally {
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finally {
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- try {
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- if (in != null) {
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- in.close();
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- }
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- } catch (Exception e2) {
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- throw e2;
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+ if (in != null) {
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+ in.close();
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}
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}
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}
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}
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return result.toString();
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return result.toString();
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@@ -118,79 +57,19 @@ public class HttpRequest {
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/**
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/**
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* 向指定 URL 发送POST方法的请求
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* 向指定 URL 发送POST方法的请求
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*
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*
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- * @param url 发送请求的 URL
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- * @param param 请求参数,请求参数应该是 name1=value1&name2=value2 的形式。
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- * @return 所代表远程资源的响应结果
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- * @throws Exception
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- */
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- public static String sendPost(String url, String param) throws Exception {
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- PrintWriter out = null;
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- BufferedReader in = null;
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- StringBuffer result = new StringBuffer();
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- try {
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- URL realUrl = new URL(url);
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- // 打开和URL之间的连接
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- URLConnection conn = realUrl.openConnection();
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- // 设置通用的请求属性
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- conn.setRequestProperty("accept", "*/*");
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- conn.setRequestProperty("connection", "Keep-Alive");
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- conn.setRequestProperty("Accept-Charset", "utf-8");
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- conn.setRequestProperty("contentType", "utf-8");
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- conn.setConnectTimeout(5000);
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- // 发送POST请求必须设置如下两行
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- conn.setDoOutput(true);
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- conn.setDoInput(true);
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- // 获取URLConnection对象对应的输出流
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- out = new PrintWriter(conn.getOutputStream());
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- // 发送请求参数
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- out.print(param);
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- // flush输出流的缓冲
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- out.flush();
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- // 定义BufferedReader输入流来读取URL的响应
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- in = new BufferedReader(
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- new InputStreamReader(conn.getInputStream()));
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- String line;
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- while ((line = in.readLine()) != null) {
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- result.append(line);
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- }
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- } catch (Exception e) {
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- throw e;
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- }
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- //使用finally块来关闭输出流、输入流
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- finally {
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- try {
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- if (out != null) {
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- out.close();
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- }
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- if (in != null) {
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- in.close();
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- }
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- } catch (Exception ex) {
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- throw ex;
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- }
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- }
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- return result.toString();
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- }
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-
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-
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- /**
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- * 向指定 URL 发送POST方法的请求
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- *
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- * @param url 发送请求的 URL
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+ * @param url 发送请求的 URL
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* @param paramMap 请求参数
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* @param paramMap 请求参数
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* @return 所代表远程资源的响应结果
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* @return 所代表远程资源的响应结果
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*/
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*/
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- public static String sendPost(String url, Map<String, ?> paramMap) throws Exception {
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+ public static String sendPost(String url, Map<String, ?> paramMap) throws Exception{
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PrintWriter out = null;
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PrintWriter out = null;
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BufferedReader in = null;
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BufferedReader in = null;
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- String result = "";
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+ StringBuilder result = new StringBuilder();
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- String param = "";
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- Iterator<String> it = paramMap.keySet().iterator();
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+ StringBuilder param = new StringBuilder();
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- while (it.hasNext()) {
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- String key = it.next();
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- param += key + "=" + paramMap.get(key) + "&";
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+ for (String key : paramMap.keySet()) {
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+ param.append(key).append("=").append(paramMap.get(key)).append("&");
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}
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}
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try {
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try {
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@@ -212,28 +91,21 @@ public class HttpRequest {
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// flush输出流的缓冲
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// flush输出流的缓冲
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out.flush();
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out.flush();
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// 定义BufferedReader输入流来读取URL的响应
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// 定义BufferedReader输入流来读取URL的响应
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- in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
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+ in = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8));
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String line;
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String line;
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while ((line = in.readLine()) != null) {
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while ((line = in.readLine()) != null) {
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- result += line;
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+ result.append(line);
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}
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}
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- } catch (Exception e) {
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- throw e;
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}
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}
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//使用finally块来关闭输出流、输入流
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//使用finally块来关闭输出流、输入流
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- finally {
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- try {
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- if (out != null) {
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- out.close();
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- }
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- if (in != null) {
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- in.close();
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- }
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- } catch (IOException ex) {
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- throw ex;
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+ finally{
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+ if(out!=null){
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+ out.close();
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+ }
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+ if(in!=null){
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+ in.close();
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}
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}
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}
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}
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- return result;
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+ return result.toString();
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}
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}
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-
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-}
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+}
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