telnet、curl命令的使用
1.封装工具类
package com.redxun.system.util;
import org.apache.commons.net.telnet.TelnetClient;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
/**
* @author huangquanguang
* @date 2023/3/22 8:57
* @description telnet、curl工具类
*/
public class TelnetCurlUtil {
private static TelnetClient telnetClient = null;
private static InputStream is = null;
private static OutputStream os = null;
/**
* 连接远程计算机,连接完成后，获取读取流与发送流
*
* @param ip 远程计算机IP地址
* @param port 远程计算机端口
*/
public static void connection(String ip, int port) {
try {
telnetClient = new TelnetClient();
telnetClient.connect(ip, port);
is = telnetClient.getInputStream();
os = telnetClient.getOutputStream();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 获取远程计算机返回的信息
*/
public String readTelnetMsg() {
try {
int len = 0;
byte[] b = new byte[1024];
do {
len = is.read(b);
if (len >= 0)
return new String(b, 0, len);
}
while (len >= 0);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* 向远端计算机发送指令消息
*
* @param msg 需要传送的指令
**/
public void sendTelnetMsg(String msg) {
byte[] b = msg.getBytes();
try {
os.write(b, 0, b.length);
os.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 查找远端计算机返回的指令中是否包含想要指令
* 一直查找，直到包含，返回true
*/
public boolean findStr(String str) {
for (; ; ) {
String msg = readTelnetMsg();
if (msg == null) return false;
if (msg.indexOf(str) != -1)
return true;
}
}
/**
* 关闭连接，关闭IO
*/
public void close() {
try {
is.close();
os.close();
telnetClient.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* java 调用 Curl的方法
*
* @param cmds
* @return
*/
public static String execCurl(String[] cmds) {
ProcessBuilder process = new ProcessBuilder(cmds);
Process p;
try {
p = process.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
StringBuilder builder = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
builder.append(line);
builder.append(System.getProperty("line.separator"));
}
return builder.toString();
} catch (IOException e) {
System.out.print("获取线程异常" + e);
}
return null;
}
/**
* curl方法
* url:请求地址
* methodType:请求类型
* 只返回状态码
*/
public static String execCurl(String url,String methodType){
String[] cmds = {"curl", "-H", "Content-Type:application/json","-sL","-w", "%{http_code}","-o","/dev/null",
"-X",""+ methodType +"" ,"-k", ""+url+""};
StringBuffer sb = new StringBuffer();
for(int i=0;i<cmds.length;i++){
sb.append(cmds[i]+" ");
}
System.out.println(sb);//这个是测试中调试输出你的发送命令航
String responseMsg=execCurl(cmds);
System.out.println(responseMsg);
return responseMsg;
}
/**
* curl get示例
*/
// public static void getToken(){
// String url = "https://www.baidu.com/"; //这个为url连接，随便写了个连接，一般接口会先调用接口获取token，然后拼接token，post发送请求
// String[] cmds = {"curl","X","GET" ,"-k", "-i",""+url+""};
// StringBuffer sb = new StringBuffer();
// for(int i=0;i<cmds.length;i++){
// sb.append(cmds[i]+" ");
// }
// System.out.println(sb);
// String responseMsg=execCurl(cmds);
// System.out.println(responseMsg);
// }
/**
* curl post示例
*/
// public static void getMsg(){
// String jsonStr= "{'content':'testtest','creator':'creator''name':'lili'}"; //这里为发送的json串
// String url = "http://192.168.2.120:7200/restApi/form/getData"; //这里为连接发送的url
// String accessToken = "123456"; //这一步这个token为上面get获取到的，有些简单的接口不需要获取这个
// String[] cmds = {"curl","-H","access-token:{{"+accessToken+"}}" ,
// "-H", "Content-Type:application/json",
// "-X","POST" ,"-k", "-i",""+url+"",
// "-d",""+jsonStr+""}; //超级注意：这个拼接json串的时候不要拼接双引号或者单引号，这个是踩坑提示，因为这个改了好久
// StringBuffer sb = new StringBuffer();
// for(int i=0;i<cmds.length;i++){
// sb.append(cmds[i]+" ");
// }
// System.out.println(sb);//这个是测试中调试输出你的发送命令航
// System.out.println(execCurl(cmds));
// }
public static void main(String[] args) {
execCurl("http://192.168.2.120:7200/form/core/formCustomQuery/queryForJson_ywgxtz","POST");
execCurl("http://192.168.2.120:7200/restApi/form/getData","GET");
execCurl("http://192.168.2.120:7200/restApi/form/queryForJson_project_can_review","POST");
}
}2.curl参数解释
"-H", "Content-Type:application/json", 设置请求头类型
"-sL","-w", "%{http_code}","-o","/dev/null", 只返回状态码
"-X",""+ methodType +"" , 指定请求类型，POST、GET
"-k" 发送https请求加上这个参数，否则会有证书报错参考文档：https://blog.csdn.net/heihaozi/article/details/122609296
3.检测接口连通情况
1.获取所有开启服务发现的接口
2.telnet这些接口的项目路径
3.telnet通的话，curl接口地址，返回非空且不是500以上则修改连通状态为1，返回空且为500以上修改为0
4.telnet不通的直接修改连通状态为0，发送预警日志等