Merge pull request #2 from hzuapps/master

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hzuapps · Nov 3, 2016 · 8293497 · 8293497
2 parents 5b09f18 + b4fec09
commit 8293497
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diff --git a/README.md b/README.md
@@ -5,6 +5,10 @@
 https://github.com/hzuapps/java-web/issues/2
 # 实验二：Tomcat基础
 https://github.com/hzuapps/java-web/issues/3
+# 实验三：Servlet基础
+https://github.com/hzuapps/java-web/issues/4
+# 实验四：Filter基础
+https://github.com/hzuapps/java-web/issues/5
 
 # 参考资料
 

diff --git a/jweb/src/edu/hzu/javaweb/labs/se1406070302213/Se1406070302213Servlet.java b/jweb/src/edu/hzu/javaweb/labs/se1406070302213/Se1406070302213Servlet.java
@@ -0,0 +1,91 @@
+package edu.hzu.javaweb.labs.se1406070302213;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class Se1406070302213Servlet extends HttpServlet {
+
+	/**
+		 * Constructor of the object.
+		 */
+	public Se1406070302213Servlet() {
+		super();
+	}
+
+	/**
+		 * Destruction of the servlet. <br>
+		 */
+	public void destroy() {
+		super.destroy(); // Just puts "destroy" string in log
+		// Put your code here
+	}
+
+	/**
+		 * The doGet method of the servlet. <br>
+		 *
+		 * This method is called when a form has its tag value method equals to get.
+		 * 
+		 * @param request the request send by the client to the server
+		 * @param response the response send by the server to the client
+		 * @throws ServletException if an error occurred
+		 * @throws IOException if an error occurred
+		 */
+	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+		response.setContentType("text/html");
+		PrintWriter out = response.getWriter();
+		out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
+		out.println("<HTML>");
+		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
+		out.println("  <BODY>");
+		out.println("  Hello!Mr Zeng!");
+		out.println("  <br>");
+		out.println("  My student number is 1406070302213.Thanks!");
+		out.println("  </BODY>");
+		out.println("</HTML>");
+		out.flush();
+		out.close();
+	}
+
+	/**
+		 * The doPost method of the servlet. <br>
+		 *
+		 * This method is called when a form has its tag value method equals to post.
+		 * 
+		 * @param request the request send by the client to the server
+		 * @param response the response send by the server to the client
+		 * @throws ServletException if an error occurred
+		 * @throws IOException if an error occurred
+		 */
+	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+		response.setContentType("text/html");
+		PrintWriter out = response.getWriter();
+		out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
+		out.println("<HTML>");
+		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
+		out.println("  <BODY>");
+		out.println("  Hello!Mr Zeng!");
+		out.println("  <br>");
+		out.println("  My student number is 1406070302213.Thanks!");
+		out.println("  </BODY>");
+		out.println("</HTML>");
+		out.flush();
+		out.close();
+	}
+
+	/**
+		 * Initialization of the servlet. <br>
+		 *
+		 * @throws ServletException if an error occurs
+		 */
+	public void init() throws ServletException {
+		// Put your code here
+	}
+
+}
diff --git a/jweb/src/edu/hzu/javaweb/labs/se1414080902108/Se1414080902108Servlet.java b/jweb/src/edu/hzu/javaweb/labs/se1414080902108/Se1414080902108Servlet.java
@@ -0,0 +1,61 @@
+package edu.hzu.javaweb.labs.se1414080902108;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * Servlet implementation class Se1414080902108Servlet
+ */
+@WebServlet("/1414080902108")
+public class Se1414080902108Servlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public Se1414080902108Servlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+		String subject = request.getParameter("subject");
+		String question = request.getParameter("question");
+		String answer1 = request.getParameter("answer1");
+		String answer2 = request.getParameter("answer2");
+		String answer3 = request.getParameter("answer3");
+		String answer4 = request.getParameter("answer4");
+		String answer = request.getParameter("answer");
+		String info = "保存成功";
+
+
+		request.setAttribute("Message", info);
+		request.setAttribute("subject", subject);
+		request.setAttribute("question", question);
+		request.setAttribute("answer1", answer1);
+		request.setAttribute("answer2", answer2);
+		request.setAttribute("answer3", answer3);
+		request.setAttribute("answer4", answer4);
+		request.setAttribute("answer", answer);
+		request.getRequestDispatcher("/show.jsp").forward(request, response);
+	}
+
+}
diff --git a/jweb/src/edu/hzu/javaweb/labs/se1414080902110/EncodingFilter.java b/jweb/src/edu/hzu/javaweb/labs/se1414080902110/EncodingFilter.java
@@ -0,0 +1,33 @@
+package edu.hzu.javaweb.labs.se1414080902110;
+
+import java.io.IOException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebFilter;
+
+@WebFilter(filterName = "EncodingFilter", urlPatterns = "/*")
+public class EncodingFilter implements Filter {
+
+	@Override
+	public void destroy() {
+		// TODO Auto-generated method stub
+	}
+
+	@Override
+	public void doFilter(ServletRequest request, ServletResponse response,
+			FilterChain chain) throws IOException, ServletException {
+		request.setCharacterEncoding("UTF-8");
+		response.setCharacterEncoding("UTF-8");
+		chain.doFilter(request, response);
+	}
+
+	@Override
+	public void init(FilterConfig filterConfig) throws ServletException {
+		// TODO Auto-generated method stub
+	}
+}
diff --git a/jweb/src/edu/hzu/javaweb/labs/se1414080902110/JDBCconnection.java b/jweb/src/edu/hzu/javaweb/labs/se1414080902110/JDBCconnection.java
@@ -0,0 +1,28 @@
+package edu.hzu.javaweb.labs.se1414080902110;
+
+import java.sql.*;
+
+public class JDBCconnection {
+	public Connection connection() {
+		String driverName = "com.mysql.jdbc.Driver";
+		String userName = "root";
+		String userpwd = "123456";
+		String dbName = "musicforum";
+		String url1 = "jdbc:mysql://localhost:3306/" + dbName;
+		String url2 = "?user=" + userName + "&password=" + userpwd;
+		String url3 = "&useUnicode=true&characterEncoding=UTF-8";
+		String url = url1 + url2 + url3;
+		try {
+			Class.forName(driverName);
+		} catch (ClassNotFoundException driver) {
+			driver.printStackTrace();
+		}
+		try {
+			Connection connection = DriverManager.getConnection(url);
+			return connection;
+		} catch (SQLException sql) {
+			sql.printStackTrace();
+		}
+		return null;
+	}
+}
diff --git a/jweb/src/edu/hzu/javaweb/labs/se1414080902110/LoginFilter.java b/jweb/src/edu/hzu/javaweb/labs/se1414080902110/LoginFilter.java
@@ -0,0 +1,45 @@
+package edu.hzu.javaweb.labs.se1414080902110;
+
+import java.io.IOException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+
+@WebFilter(filterName = "LoginFilter", urlPatterns = "/essay/*")
+public class LoginFilter implements Filter {
+
+	@Override
+	public void destroy() {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void doFilter(ServletRequest request, ServletResponse response,
+			FilterChain chain) throws IOException, ServletException {
+		HttpServletRequest req = (HttpServletRequest) request;
+		HttpServletResponse res = (HttpServletResponse) response;
+
+		HttpSession session = req.getSession();
+		if (session.getAttribute("loginUserAccount") != null) {
+			chain.doFilter(request, response);
+		} else {
+			res.sendRedirect("../error.jsp");
+		}
+	}
+
+	@Override
+	public void init(FilterConfig filterConfig) throws ServletException {
+		// TODO Auto-generated method stub
+
+	}
+
+}
diff --git a/jweb/src/edu/hzu/javaweb/labs/se1414080902110/Se1414080902110Sevlet.java b/jweb/src/edu/hzu/javaweb/labs/se1414080902110/Se1414080902110Sevlet.java
@@ -0,0 +1,60 @@
+package edu.hzu.javaweb.labs.se1414080902110;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.sql.*;
+import edu.hzu.javaweb.labs.se1414080902110.JDBCconnection;
+
+public class Se1414080902110Sevlet extends HttpServlet {
+	private Connection conn;
+	private PreparedStatement pstmt;
+	private ResultSet rs;
+
+	public Se1414080902110Sevlet() {
+		super();
+	}
+
+	public void destroy() {
+		super.destroy();
+	}
+
+	public void doGet(HttpServletRequest request, HttpServletResponse response)
+			throws ServletException, IOException {
+		doPost(request, response);
+	}
+
+	public void doPost(HttpServletRequest request, HttpServletResponse response)
+			throws ServletException, IOException {
+		String account = request.getParameter("account");
+		String password = request.getParameter("password");
+		try {
+			JDBCconnection connnection = new JDBCconnection();
+			conn = connnection.connection();
+			String sql = "select user_id from user where user_account =? and user_password =?";
+			pstmt = conn.prepareStatement(sql);
+			pstmt.setString(1, account);
+			pstmt.setString(2, password);
+			rs = pstmt.executeQuery();
+			if (rs.next()) {
+				request.getSession().setAttribute("loginUserAccount", account);
+				request.getRequestDispatcher("/essay.jsp").forward(request,
+						response);
+			} else {
+				request.getRequestDispatcher("/error.jsp").forward(request,
+						response);
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+	public void init() throws ServletException {
+		// Put your code here
+	}
+
+}
diff --git a/jweb/src/edu/hzu/javaweb/labs/se1414080902113/Se1414080902113Servlet.java b/jweb/src/edu/hzu/javaweb/labs/se1414080902113/Se1414080902113Servlet.java
@@ -0,0 +1,48 @@
+package edu.hzu.javaweb.labs.se1414080902113;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.ServletConfig;
+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.servlet.http.HttpSession;
+
+@WebServlet("/1414080902113")
+public class Se1414080902113Servlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+
+	public Se1414080902113Servlet() {
+		super();
+	}
+
+	public void init(ServletConfig config) throws ServletException {
+
+	}
+
+	public void destroy() {
+	}
+
+	protected void doGet(HttpServletRequest request, HttpServletResponse response)
+			throws ServletException, IOException {
+	       PrintWriter out=response.getWriter();
+	       response.setContentType("text/html;charset=utf-8");
+	       out.println("<HTML>");
+	       out.println("  <HEAD><TITLE>µÚ1¸öServletÊ¾Àý</TITLE></HEAD>");
+	       out.println("<BODY>");
+	       out.println("²âÊÔ³É¹¦!");
+	       out.println("</BODY>");
+	       out.println("</HTLM>");
+	       out.flush();
+	       out.close();
+	}
+
+	protected void doPost(HttpServletRequest request, HttpServletResponse response)
+			throws ServletException, IOException {
+		doGet(request, response);
+	}
+
+}