我的ExecuteScript.java类
package scriptOnJsp;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.swing.JOptionPane;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpATTRS;
import com.jcraft.jsch.SftpException;
//@WebServlet("/ExecuteScript")
public class ExecuteScript extends HttpServlet {
private static final long serialVersionUID = 1L;
Session session = null;
Channel channel = null;
ChannelSftp channelSftp = null;
HashMap<String, String> hashMap = new HashMap<String, String>();
HashMap<String, HashMap<String, String>> hashingMap = new HashMap<String,
HashMap<String, String>>();
MapValue keyValue = new MapValue();
String scriptResult;
String host;
String password;
String command = "ls";
String executeDirectory = "/t3/envs/wlppp4/";
public ExecuteScript() {
super();
}
/*
* protected void doGet(HttpServletRequest request, HttpServletResponse
* response) throws ServletException, IOException {
* response.setContentType("text/html"); PrintWriter printWriter =
* response.getWriter(); printWriter.println("<h1>ExecuteScript</h1>"); }
*/
protected void processRequest(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
// Get user_name and pass_word from the JSP page
host = request.getParameter("host_name");
String password = request.getParameter("pass_word"); // Print the
above
// got values in
// console
System.out.println("The username is" + host);
System.out.println("\nand the password is" + password);
request.setAttribute("dd", keyValue);
}
public void connect() {
try {
JSch jsch = new JSch();
session = jsch.getSession("sftp_t3", host, 22);
session.setPassword(password);
session.setConfig("StrictHostKeyChecking", "no");
java.util.Properties config = new java.util.Properties();
session.setConfig(config);
session.connect();
channel = session.openChannel("sftp");
channel.connect();
channelSftp = (ChannelSftp) channel;
channelSftp.cd(executeDirectory);
executeCommand(command);
System.out.println("Executed :)");
} catch (Exception e) {
e.printStackTrace();
}
}
public void executeCommand(String script) throws JSchException,
IOException, SftpException {
System.out.println("Execute sudo");
String sudo_pass = "test";
ChannelExec channel = (ChannelExec) session.openChannel("exec");
Channel channelTemp = (ChannelSftp) session.openChannel("sftp");
((ChannelExec) channel).setCommand(script);
InputStream in = channel.getInputStream();
OutputStream out = channel.getOutputStream();
((ChannelExec) channel).setErrStream(System.err);
channel.connect();
out.write((sudo_pass + "\n").getBytes());
out.flush();
byte[] tmp = new byte[1024];
while (true) {
while (in.available() > 0) {
int i = in.read(tmp, 0, 1024);
if (i < 0)
break;
scriptResult = new String(tmp, 0, i);
String[] strArray = scriptResult.split("\n");
for (String temp : strArray) {
int var = temp.indexOf(":");
String arr = temp.substring(0, var);
String arry = temp.substring(var,
temp.length());
hashMap.put(arr, arry);
}
for (Map.Entry<String, String> pairs :
hashMap.entrySet()) {
System.out.println("" + pairs.getKey() +
pairs.getValue());
}
keyValue.setMinDays(hashMap.get("Last password
change"));
keyValue.setPassExpires(hashMap.get("Password
expires"));
keyValue.setPassInactive(hashMap.get("Password
inactive"));
keyValue.setAccExpires(hashMap.get("Account
expires"));
keyValue.setMinDays(hashMap
.get("Minimum number of days between
password change"));
keyValue.setMaxDays(hashMap
.get("Maximum number of days between
password change"));
keyValue.setNoWarnings(hashMap
.get("Number of days of warning
before password expires"));
hashingMap.put(host, hashMap);
for (Map.Entry<String, HashMap<String, String>>
newPairs : hashingMap
.entrySet()) {
System.out.println("Set 1: \n" +
newPairs.getKey()
+ newPairs.getValue());
for (Map.Entry<String, String> newPairsTemp
: newPairs
.getValue().entrySet()) {
System.out.println("Set 2: \n" +
newPairsTemp.getKey()
+
newPairsTemp.getValue());
}
}
System.out.print("Data are: " + scriptResult);
}
if (channel.isClosed()) {
System.out.println("exit-status: " +
channel.getExitStatus());
break;
}
try {
Thread.sleep(1000);
} catch (Exception ee) {
System.out.println(ee);
}
}
channel.disconnect();
System.out.println("Sudo disconnect");
}
public void disconnect() {
session.disconnect();
}
public void Openpage(HttpServletResponse res) throws IOException {
// here type your JSP page that you want to open
res.sendRedirect("host.jsp");
}
/*
* public static void main(String... args) throws JSchException,
* IOException, SftpException {
*
* ExecuteScript escript = new ExecuteScript();
*
* //escript.processRequest(request, response); escript.connect();
* escript.disconnect(); }
*/
}
我的bean类 - MapValue.java
package scriptOnJsp;
public class MapValue {
private String minDays;
private String passInactive;
private String lastPassChange;
private String maxDays;
private String passExpires;
private String accExpires;
private String noWarnings;
public String getMinDays() {
return minDays;
}
public void setMinDays(String minDays) {
this.minDays = minDays;
}
public String getPassInactive() {
return passInactive;
}
public void setPassInactive(String passInactive) {
this.passInactive = passInactive;
}
public String getLastPassChange() {
return lastPassChange;
}
public void setLastPassChange(String lastPassChange) {
this.lastPassChange = lastPassChange;
}
public String getMaxDays() {
return maxDays;
}
public void setMaxDays(String maxDays) {
this.maxDays = maxDays;
}
public String getPassExpires() {
return passExpires;
}
public void setPassExpires(String passExpires) {
this.passExpires = passExpires;
}
public String getAccExpires() {
return accExpires;
}
public void setAccExpires(String accExpires) {
this.accExpires = accExpires;
}
public String getNoWarnings() {
return noWarnings;
}
public void setNoWarnings(String noWarnings) {
this.noWarnings = noWarnings;
}
}
我的jsp - host.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Host details</title>
</head>
<body>
<form name=host action="SaveUser" method="Post">
Host name: <input type="text" name="host_name"> <br />
Password: <input type="password" name="pass_word" /> <input
type="submit" value="Submit" />
</form>
</body>
</html>
> My web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>Scriptingpage</display-name>
<welcome-file-list>
<welcome-file>host.jsp</welcome-file>
</welcome-file-list>
</web-app>
我需要在主机名上获取用户entery并将其提取到java类中， 操纵它并将ezxecuted查询显示为键值对。 在这，我甚至无法显示我的jsp页面。 请帮助我解决这个问题。
答案 0 :(得分：0)
如果您收到404错误，则表示您在地址栏上放置的网址不存在。在检查您的代码之前，请确保您已将文件上传到服务器的正确位置，并且您已在浏览器中提供了正确的路径。
答案 1 :(得分：0)
您需要在web.xml中添加servlet条目，如下所示，
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>Scriptingpage</display-name>
<servlet>
<servlet-name>ExecuteScript</servlet-name>
<servlet-class>PackageName.ExecuteScript</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ExecuteScript</servlet-name>
<url-pattern>/ExecuteScript</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>host.jsp</welcome-file>
</welcome-file-list>
</web-app>
在你的jsp中，
<form name=host action="/ExecuteScript" method="Post">
Host name: <input type="text" name="host_name"> <br />
Password: <input type="password" name="pass_word" /> <input
type="submit" value="Submit" />
</form>
操作中的网址应与web.xml