work_23_常用的工具类

1.发送get，post请求

常用与多个项目之间调用

public class HttpUtils {
    /**
     * 向指定URL发送GET方法的请求
     *
     * @param url   发送请求的URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url   发送请求的 URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性

            conn.setRequestProperty("Content-Type", "application/json");
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                    if (in != null) {
                        in.close();
                    }
                } catch (IOException ex) {
                    ex.printStackTrace();
            }
        }
        return result;
    }
}

2.邮件发送

pom

<!-- https://mvnrepository.com/artifact/javax.mail/mail -->
<dependency>
 <groupId>javax.mail</groupId>
 <artifactId>mail</artifactId>
 <version>1.4.7</version>
</dependency>

短信pojo

public class EmailInfo {
 
 private String smtpServer;// SMTP服务器地址
 private String port; // 端口
 private String fromUser;// 登录SMTP服务器的用户名,发送人邮箱地址
 private String fromUserPassword;// 登录SMTP服务器的密码
 private String toUser; // 收件人
 private String subject; // 邮件主题
 private String content; // 邮件正文
 
 public EmailInfo(String toUser, String subject, String content) {
 this.toUser = toUser;
 this.subject = subject;
 this.content = content;
 this.smtpServer = "smtp.tianxiapass.com";
 this.port = "25";
 this.fromUser = "support@tianxiapass.com";
 this.fromUserPassword = "*********";
 }
}

短信发送EmailUtils

public class EmailUtils {
 
 public static void sendMail(EmailInfo emailInfo) throws Exception {
 Properties prop = new Properties();
 prop.put("mail.host", "smtp.mxhichina.com");
 prop.put("mail.transport.protocol", "smtp");
 prop.put("mail.smtp.auth", "true");
 Session session = Session.getInstance(prop);
 session.setDebug(true);
 Transport ts = session.getTransport();
 ts.connect(emailInfo.getFromUser(), emailInfo.getFromUserPassword());
 Message message = new MimeMessage(session);
 message.setFrom(new InternetAddress(emailInfo.getFromUser()));
 message.setRecipient(Message.RecipientType.TO, new InternetAddress(emailInfo.getToUser()));
 message.setSubject(emailInfo.getSubject());
 message.setContent(emailInfo.getContent(), "text/html;charset=utf-8");
 ts.sendMessage(message, message.getAllRecipients());
 }
}